• Silica supported molybdenum catalysts are suitable for the transformation of methane to formaldehyde at ambient pressure and at elevated pressure in the temperature range 500 to 600 C, but improved performance in terms of conversion of methane and selectivity to formaldehyde can be achieved by doping the catalysts with small amounts of sodium, copper or iron. (europa.eu)
  • The performances of catalysts which show diminishing selectivity to methanol and/or formaldehyde for increasing methane consumption are compared at ambient pressure and at elevated pressure. (europa.eu)
  • The continuous flow epoxidation using FlowSyn reactor has shown considerable time savings, high reproducibility and selectivity along with remarkable improvements in catalyst stability compared to reactions carried out in a batch reactor. (lancs.ac.uk)
  • The catalysts and their activity and selectivity evaluated in liquid phase selective hydrogenation of citral in a semi-batch Parr reactor at 90°C and a hydrogen pressure of 10 MPa and solvent medium of a isopropanol during 6 hours. (journalcra.com)
  • Amongst the studied catalysts, 1.5%Pt/TiO2 reduced at 575°C had presented higher selectivity in terms of citral towards unsaturated alcohols (Geraniol and Nerol). (journalcra.com)
  • This is the influence of strong metal supported interaction (SMSI effect) of supported catalysts reduced at 575°C and selectivity to activate C=O hydrogenation increased. (journalcra.com)
  • These phenomena were hypothesized to contribute to the superior selectivity to 1, 3-PDO over 1, 2-PDO of the supported Pt-WO x catalysts when compared with the corresponding supported Pt catalysts. (pku.edu.cn)
  • The realized superior 1, 3-PDO selectivity was consistent with its higher stability on the Pt-WO x catalysts, as reflected by the lower reaction rate constant of 1, 3-PDO than those of 1, 2-PDO and glycerol obtained in their hydrogenolysis reactions. (pku.edu.cn)
  • Although precious metal-based mixed metal oxides (MMOs) have been used as CER catalysts for more than half a century, they intrinsically suffer from a selectivity problem between the CER and parasitic oxygen evolution reaction (OER). (jecst.org)
  • The proposed project focuses on the investigation of the nature of active sites in vanadia supported catalysts and their activity/selectivity in selective oxidation of ethanol to acetaldehyde. (orlenunicre.cz)
  • By combining the catalytic data with the detailed physico-chemical characterization of the catalysts, the role (activity/selectivity) of different vanadium species will be determined. (orlenunicre.cz)
  • These bimetallic catalysts displayed an improved selectivity for cinnamaldehyde hydrogenation towards the desired cinnamyl alcohol as compared to the monometallic platinum catalyst and a bimetallic catalyst prepared by impregnation in which such a close interaction was absent. (abo.fi)
  • It is also noteworthy that the materials give among the best catalytic performance (in terms of both conversion and product selectivity) under mild reaction conditions that has been reported for toluene oxidation with H 2 O 2 as oxidant for heterogeneous catalysts. (njit.edu)
  • It is also noteworthy that the materials give among the best catalytic performance (in terms of both conversion and product selectivity) under mild reaction conditions that has been reported for toluene oxidation with H2O2 as oxidant for heterogeneous catalysts. (njit.edu)
  • The results obtained using L1−3 as supporting ligands show that the catalysts derived from L3 and L1 have similar activity and selectivity for methyl propanoate (MeP). (shu.ac.uk)
  • From these studies, it is suggested that the reason for the Pd−L3 catalyst resembling the Pd−L1 catalyst in terms of selectivity is that the crucial acyl intermediates are similar. (shu.ac.uk)
  • The influence of sterically demanding dirhodium tetracarboxylate catalysts on the site selectivity of C-H functionalization by means of rhodium carbene-induced C-H insertion is described. (emory.edu)
  • Herein, we described a strategy of hydrogen spillover to break this scaling relationship to enable highly performed hydrogenation at low temperatures by constructing the dual-active site in supported-metal catalysts. (authorea.com)
  • The Ru/SiO2 SBA-15 materials prepared by reactive deposition with H2 in scCO2 were selective catalysts for the hydrogenation reactions of benzene and limonene, allowing the production of partly hydrogenated hydrocarbons that may serve as building blocks for more complex chemicals. (ucm.es)
  • We then show how the nature of the Co(Ni)MoS active sites impact the selective HDS of light sulfur compounds (alkylthiophene) versus olefin hydrogenation (alkylbutene). (hal.science)
  • The selective oxidation of methane to methanol and formaldehyde over a series of supported molybdenum catalysts and vanadium catalysts has been investigated for a wide range of experimental conditions. (europa.eu)
  • SCR catalysts are made from various porous ceramic materials used as a support, such as titanium oxide, and active catalytic components are usually either oxides of base metals (such as vanadium, molybdenum and tungsten), zeolites, or various precious metals. (wikipedia.org)
  • Base metal catalysts, such as vanadium and tungsten, lack high thermal durability, but are less expensive and operate very well at the temperature ranges most commonly applied in industrial and utility boiler applications. (wikipedia.org)
  • A range of catalyst synthesis methods, including the variation of the chemical nature of the support surface, will be used to modify the nature of vanadium species and to control their relative concentration. (orlenunicre.cz)
  • The activity of the catalysts having different distribution of the vanadium species will be determined for selective oxidation of ethanol to acetaldehyde. (orlenunicre.cz)
  • Often, this type of regeneration uses an oxidation catalyst, such as platinum, vanadium or similar compound, to reduce the temperature necessary to begin regeneration. (cdc.gov)
  • Among the above transformations, active sites on the carbon catalysts toward selective oxidation or catalytic reduction include -C-OH and -C=O. The oxidation or reduction reactions can be realized via the recycling of the -C-OH and -C=O groups. (nature.com)
  • MnO x catalysts have been proven to have superior activity at low temperatures (LT) for selective catalytic reduction (SCR) of NO x . (aaqr.org)
  • Alternative post-combustion NO x reduction techniques, including selective catalytic reduction and selective non-catalytic reduction (SNCR), have been used for NO x elimination. (aaqr.org)
  • What is Selective Catalytic Reduction (SCR) Catalyst? (environex.com)
  • Selective catalytic reduction is a catalytic reaction which uses ammonia to reduce oxides of nitrogen (NOx) into harmless nitrogen (N 2 ) and water. (environex.com)
  • Selective catalytic reduction (SCR) means of converting nitrogen oxides, also referred to as NO x with the aid of a catalyst into diatomic nitrogen (N 2), and water (H 2O). (wikipedia.org)
  • Selective catalytic reduction of NO x using ammonia as the reducing agent was patented in the United States by the Engelhard Corporation in 1957. (wikipedia.org)
  • The NO x reduction reaction takes place as the gases pass through the catalyst chamber. (wikipedia.org)
  • id":6992669835437,"title":"OEM CUMMINS SELECTIVE CATALYST REDUCTION \/ SCR (5505925)","handle":"oem-cummins-selective-catalyst-reduction-scr-5505925","description":"\u003cp data-mce-fragment=\"1\"\u003eThis\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003cstrong data-mce-fragment=\"1\"\u003eOEM Cummins SCR MODULE 5505925 \/ 2880256\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eis brand NEW and has never been installed. (dpfpartsdirect.com)
  • The Cummins Selective Catalytic Reduction Catalyst is a direct fit replacement that provides equal or greater performance to OEM parts without the added cost of core charges. (fleetpar.com)
  • The Cummins Selective Catalytic Reduction Catalyst is a new (not re-manufactured or re-conditioned) part. (fleetpar.com)
  • The other is to use selective catalytic reduction (SCR) for NO x removal. (sae.org)
  • HC-SCR Catalyst for NO x Reduction in a Non-Road Diesel Engine," SAE Technical Paper 2009-01-2880, 2009, https://doi.org/10.4271/2009-01-2880 . (sae.org)
  • Until recently diesel particulate filter (DPF) and selective catalyst reduction (SCR) systems were available to underground (UG) mining industry in North America primarily in the form of aftermarket retrofits for heavy- duty (HD) and light-duty (LD) applications. (cdc.gov)
  • Selective Catalyst Reduction (SCR) Systems: 1. (cdc.gov)
  • To examine the influence of phosphorus on the commercial V2O5(WO3)/TiO2 SCR catalyst, measurements were carried out by means of infrared and Raman spectroscopy, XPS, and NO reduction measurement as a function of phosphorus loading. (lu.se)
  • The involvement of metallic sites on Mo 2 C catalysts for this reaction was demonstrated by the nearly invariant benzene synthesis rate per CO chemisorption site. (umn.edu)
  • Herein, we report copper (I)-catalyzed boryl substitution of allylic carbonates and ethers, monoborylation of 1,3-dienes and enynes, boryl substitution of alkyl halides, and borylative cyclization of alkenes containing an appropriate leaving group for the selective synthesis of various organoboron compounds including allyl- and allenylboronales, and optically active carbocyclic boronates. (elsevierpure.com)
  • The catalytic selective hydrogenolysis of glycerol to 1, 3-propanediol (1, 3-PDO) provides a sustainable route for the synthesis of this important diol. (pku.edu.cn)
  • However, the current understanding of reaction pathways for these transformations over noble metal catalysts is rather limited. (confex.com)
  • It is interesting to bridge the gap between homogeneous and heterogeneous catalysis via controllable construction of a heterogeneous catalyst containing defined active sites. (nature.com)
  • Translated into catalysis, the team was able to perform C-I-selective cross-coupling reactions of aryl iodides with Grignard reagents in the presence of C-Br and C-Cl groups. (chemistryviews.org)
  • Their strategy - described in a paper published in Nature Catalysis on Mar. 23 - could be applied to design stable, active, and selective catalysts based on a wide range of metals supported on metal oxides to produce industrially useful chemicals and fuels from biomass-derived molecules. (rdworldonline.com)
  • For a molecule to generate a particular product, the reaction has to be directed along a certain pathway because many side reactions that are not selective for the desired product are possible," explained co-author Anibal Boscoboinik , a staff scientist in the Center for Functional Nanomaterials (CFN) Interface Science and Catalysis Group at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory. (rdworldonline.com)
  • This paper reports an overview of recent DFT studies on the atomic scale characterization of Co(Ni)MoS active phases used in selective hydrodesulfurization (HDS) catalysis. (hal.science)
  • First principles investigations of molecule-surface interactions, catalysts on solid surfaces, as well as multiscale simulations of heterogeneous catalysis involving mixed metal oxide surfaces. (lu.se)
  • Graphene can also be employed as a confining agent to study undercover reactions, a trending topic in the catalysis field due to the reported higher performance of catalysts when placed in confined environments. (lu.se)
  • An infrared spectroscopic investigation of supported molybdenum catalysts revealed the presence of methoxy species and oxymethylene species on the catalyst surface, following exposure to methane in typical reaction conditions. (europa.eu)
  • A notable industrial implementation of alkene epoxidation with TBHP was the Halcon process that employed soluble molybdenum(VI) as a catalyst for liquid phase epoxidation of propylene to propylene oxide. (lancs.ac.uk)
  • In this work, an efficient and selective polystyrene 2-(aminomethyl)pyridine supported molybdenum complex (Ps.AMP.Mo) and a polybenzimidazole supported molybdenum complex (PBI.Mo) have been used as catalysts for epoxidation of 4-vinyl-1-cyclohexene (i.e. 4-VCH) using TBHP as an oxidant in batch and continuous reactors. (lancs.ac.uk)
  • A detailed evaluation of molybdenum (Mo) leaching from the polymer supported catalyst has been investigated by isolating any residue from reaction supernatant solutions and then using these residues as potential catalyst in epoxidation reactions. (lancs.ac.uk)
  • Novel spherical mesoporous MnAl x catalysts were prepared by a simple precipitation method. (aaqr.org)
  • In this study, spherical mesoporous MnAl x catalysts with different molar ratios were prepared using a simple precipitation method. (aaqr.org)
  • Hexagonally ordered mesoporous AISBA-15 catalysts having n(Si)/(nA]) ratios from 7 to 215 have been synthesized hydrothermally using a cheap non-ionic block copolymer as the structure-directing agent. (ncl.res.in)
  • This presentation will highlight recent results on Au-catalyzed selective oxidation of glycerol and HMF to mono and diacids as well as Pt-catalyzed hydrogenolysis of glycerol to various C2 and C3 compounds. (aiche.org)
  • In this study, a series of platinum-tungsten oxide (Pt-WO x ) catalysts with different WO x surface densities dispersed on titanium(Ⅳ) oxide, zirconium(Ⅳ) oxide, and aluminum oxide supports were prepared and evaluated for the glycerol hydrogenolysis to 1, 3-PDO. (pku.edu.cn)
  • These results might promote the development of heterogeneous catalysts with molecularly defined single active sites exhibiting a comparable activity to homogeneous catalysts. (nature.com)
  • As single-active site catalysts, homogeneous catalysts have the advantage of being well defined on a molecular level and readily soluble in the reaction medium. (nature.com)
  • However, homogeneous catalysts, i.e., transition metal complexes or organic molecules, often consist of valuable noble metals and/or ligands and face the problem of separation. (nature.com)
  • Thus, despite their intrinsic advantages, homogeneous catalysts are used in less than 20% of the industrially relevant processes because they are not easily recycled. (nature.com)
  • Such stacked 2D materials are essential for the construction of future and very powerful electronic devices, while dense arrays of functional groups attached to a 2D material is a very interesting starting point for immobilization of homogeneous catalysts. (lu.se)
  • The combination of Cu and Ni in bimetallic catalysts on ZrO 2 , leads to a more efficient HDO of stearic acid. (osti.gov)
  • Bimetallic platinum-tin and platinum-gallium catalysts supported on carbon nanofibers (CNF) were prepared via reductive deposition precipitation and impregnation. (abo.fi)
  • In this work, fuel bioadditives production from glycerol esterification with acetic acid was performed over acidic ion exchange resin as acid catalyst in a batch reactor. (conicet.gov.ar)
  • The influence of several parameters such as temperature, molar ratio of acetic acid to glycerol and catalyst loading on glycerol conversion and product distribution were evaluated following an experimental design. (conicet.gov.ar)
  • catalyst concentration, 393 K reaction temperature and 9:1 molar ratio of acetic acid to glycerol. (conicet.gov.ar)
  • This thesis shows the development of a new heterogeneous catalyst "Pt-STA/B-zeolite" and a study on the conversion of glycerol to 1,3-propanediol using a newly developed catalyst. (monash.edu)
  • These results provide strong inspiration to design molecularly defined heterogeneous catalysts for selective oxidation reactions, and the key to realizing this idea is the development of a method to synthesize molecularly defined heterogeneous catalytic materials. (nature.com)
  • A general finding to emerge from the research was that most catalysts studied were sufficiently active in the experimental conditions employed to convert appreciable amounts of methane, but the best catalysts were those which did not lead to an excessive amount of formaldehyde decomposition in subsequent reactions. (europa.eu)
  • A manganese catalyst containing a tetradentate ligand derived from triazacyclononane exhibits high catalytic activity in epoxidation reactions using peracetic acid as oxidant. (organic-chemistry.org)
  • Typically, the metal catalyst that breaks this bond also activates ring-related reactions. (rdworldonline.com)
  • The reasons for the favorable catalytic properties of the Pd−L3 catalyst are probed by 13CO reactions with the model complexes 9a/9b and 14a/14b, and the structures of the resulting acyl complexes are assigned on the basis of 13C and 31P NMR and IR spectroscopy. (shu.ac.uk)
  • This chemoselective activation of C-I bonds is in stark contrast to the reactivity of common Pd(0) monomeric catalysts. (chemistryviews.org)
  • The high purity products were isolated and catalyst was easily separated in simple work-up and was recycled several times without loss of reactivity under the described reaction conditions. (figshare.com)
  • Next, we summarize the design strategies for new CER electrocatalysts that can enhance the reactivity of MMO-based catalysts and overcome their scaling relationship, which include the doping of MMO catalysts with foreign metals and the development of non-precious metal-based catalysts and atomically dispersed metal catalysts. (jecst.org)
  • abstract = "E-beam lithography based nanowire catalysts are defined by a two dimensional parameter space, spanned by metallization thickness and resist pinhole diameter. (iucc.ac.il)
  • The rates of formation and the gas phase pressures of formaldehyde or methanol produced compare with those produced in many conventional selective oxidation processes. (europa.eu)
  • contrary to native oxide free nanowire growth, where catalyst splitting is a limiting effect. (iucc.ac.il)
  • Supported metal nanoparticle heterogeneous catalysts such as copper on zinc oxide is used for the catalytic conversion of carbon dioxide to methanol. (lu.se)
  • After synthesizing the platinum-titania catalyst at UD, they performed various structural and chemical characterization studies using facilities at Brookhaven and Argonne National Labs. (rdworldonline.com)
  • We report a novel, facile, physical mixing synthetic method that leads to titanium silicate and copper titanium silicate materials or highly effective solid acid catalysts for toluene oxidation reaction. (njit.edu)
  • Alcohols were produced over a Pt/C catalyst at low reaction temperatures because of the favorable chemical equilibrium with corresponding ketones. (confex.com)
  • This will allow an improved design of selective oxidation catalysts for the oxidation of alcohols to aldehydes in future. (orlenunicre.cz)
  • Although heterogeneous catalysts have been extensively used in practical processes due to their easy recoverability and operation, they often possess different catalytically active sites, and testing them on a molecular level is difficult. (nature.com)
  • The materials we make are niche polymers with tailor-made sites that facilitate selective molecular interactions. (lu.se)
  • The scientists are part of a team that designed and characterized a catalyst to promote the selective breaking of a carbon-oxygen bond in a plant derivative (chemical structure with the OH side group shown in the image background) to produce a potential biofuel. (rdworldonline.com)
  • They demonstrated how this catalyst significantly enhances the rate of breaking a particular carbon-oxygen bond for the conversion of a plant derivative (furfuryl alcohol) into a potential biofuel (2-methylfuran). (rdworldonline.com)
  • This catalyst selectively breaks a bond between a carbon and oxygen in furfuryl alcohol, a five-member ring-shaped molecule with an attached side group (structure in black). (rdworldonline.com)
  • However, the catalyst designed in this study only breaks the side group carbon-oxygen bond. (rdworldonline.com)
  • Another catalyst based on activated carbon was also developed which is applicable for the removal of NOx at low temperatures. (wikipedia.org)
  • However, homogenous catalysed alkene epoxidation has several drawbacks including deposition of catalyst on the reactor walls and increased difficulties in separation of catalyst from the reaction mixture. (lancs.ac.uk)
  • An extensive assessment of the catalytic activity, stability and reusability of the catalysts has been conducted in a classical batch reactor. (lancs.ac.uk)
  • Experiments have been carried out to study the effect of reaction temperature, feed molar ratio of alkene to TBHP and catalyst loading on the yield of 1,2-epoxyhexane and 4-vinyl-1-cyclohexane 1,2-epoxide (4-VCH 1,2-epoxide) to optimise the reaction conditions in a batch reactor. (lancs.ac.uk)
  • Furthermore, the efficiency of the heterogeneous catalyst for continuous epoxidation studies have been assessed using a FlowSyn continuous flow reactor by studying the effect of reaction temperature, feed molar ratio of alkene to TBHP and feed flow rate on the conversion of the oxidant and the yield of corresponding epoxide. (lancs.ac.uk)
  • It was observed that the furan ring saturation with deuterium over a Pd /C catalyst occurred at low reaction temperatures leading to various deuterated THFs, followed by the deuterium exchange for hydrogen in the THF ring as the temperature increased. (confex.com)
  • MnO x catalysts exhibit excellent activity at low temperature owing to their excellent redox properties and variable valence states. (aaqr.org)
  • The minimum effective temperature depends on the various fuels, gas constituents, and catalyst geometry. (wikipedia.org)
  • The system exhibits broad substrate scope and is remarkably selective toward aliphatic cis -olefins. (organic-chemistry.org)
  • These show remarkably selective adsorption of cationic dyes methylene blue and propidium iodide via the electrostatic interaction of the polymers with the dyes. (iisc.ac.in)
  • scCO2 is shown to be a green solvent that allows the preparation of efficient heterogeneous catalysts to design sustainable processes. (ucm.es)
  • Ross, J.R.H. / The selective oxidative dehydrogenation of propane on catalysts derived from niobium pentoxide: preparation, characterisation and properties . (utwente.nl)
  • The ammonia adsorbs onto the SCR catalyst, where it reacts with NOx and oxygen to form nitrogen and water. (environex.com)
  • The C-O bond cleavage also occurred over a Pd /C catalyst at elevated temperatures resulting in deuterated ketones where all hydrogen atoms were eventually exchanged for deuterium. (confex.com)
  • Although the presence of a catalyst, in either form, will increase the feasibility of the filter by allowing regeneration at lower exhaust temperatures, it may also result in an increase in the concentration of NO 2 in the exhaust. (cdc.gov)
  • Other uses of cobalt include catalysts, batteries, dyes and pigments and related applications. (who.int)
  • A series of 1,8-dioxooctahydroxanthene derivatives and some crowded bis(1,8-dioxooctahdroxanthene) were selectively synthesized using tungstophosphoric acid nanoparticles supported on polyamic acid (TPA/PAA) as a new catalyst in solvent-free conditions. (figshare.com)
  • In a vehicle, onboard urea, known as Diesel Exhaust Fluid (DEF) or AdBlue, is sprayed into exhaust gas upstream of the catalyst brick and diffused using a mixer to optimize airflow and ensure thorough vaporization and even distribution in the exhaust prior to entering the catalyst. (environex.com)
  • In the present study, an Ag-alumina based prototype HC-SCR catalyst was studied for NO x removal in a turbocharged, intercooled direct-injection non-road diesel engine. (sae.org)
  • The catalyst in the form of a fuel additive is added to the diesel fuel prior to combustion, whereas, a catalyst in the form of a washcoating is used to coat the walls of a filter during the manufacturing process, creating a highly catalyzed filter system. (cdc.gov)
  • 250°C). Recently, a great deal of effort has been made to explore LT V-free SCR high efficient catalysts. (aaqr.org)
  • If there are areas of high and low ammonia flow entering the system, the catalyst will not be used effectively and higher NOx emissions and ammonia may result. (environex.com)
  • NIOSH research has not found an NO 2 emissions increase associated with the use of catalysts as fuel additives. (cdc.gov)
  • Consequently, mines should be aware of the chemical composition of any catalysts they choose to employ and the resulting impact on NO 2 emissions. (cdc.gov)
  • Profumo A, Sturini M, Maraschi F, Cucca L, Spini G. Selective sequential dissolution for the determination of inorganic indium compounds in the particulate matter of emissions and workplace air. (who.int)
  • Highly site-selective and enantioselective C-H functionalization of a variety of simple substrates containing primary benzylic, allylic, and methoxy C-H bonds was achieved with this catalyst. (emory.edu)
  • The catalyst AlSBA-15(45)showed superior performance in the acid-catalyzed tertiary butylation of phenol employing tert-butanol as the alkylation agent. (ncl.res.in)
  • We show that graphene acts as a catalyst for water formation by providing the required adsorption configuration that promotes the reaction. (lu.se)
  • Generally, a homogeneous catalyst exhibits good activity and defined active sites but it is difficult to recycle. (nature.com)
  • Meanwhile, a heterogeneous catalyst can easily be reused but its active site is difficult to reveal. (nature.com)
  • Here, we report that a molecularly defined, single-active site heterogeneous catalyst has been designed and prepared via the oxidative polymerization of maleimide derivatives. (nature.com)
  • These polymaleimide derivatives can be active catalysts for the selective oxidation of heterocyclic compounds to quinoline and indole via the recycling of -C=O and -C-OH groups, which was confirmed by tracing the reaction with GC-MS using maleimide as the catalyst and by FT-IR analysis with polymaleimide as the catalyst. (nature.com)
  • First, the catalyst should be composed of molecularly defined active sites, and second the catalyst should be insoluble in the solution during the reaction in order to build a heterogeneous catalyst system. (nature.com)
  • Catalytic performance exploration showed that these polymaleimide (PMI) derivatives can be active catalysts for the selective oxidation of heterocyclic compounds to quinoline and indole via the recycling of -C=O and -C-OH groups. (nature.com)
  • We present experimental and theoretical methods for assessing the active sites of MMO catalysts and the origin of the scaling relationship between the CER and the OER. (jecst.org)
  • Because the anodic CER requires a larger overpotential than the HER, the design of highly active, selective, and long-term durable CER electrocatalysts is of prime importance in the chlor-alkali process. (jecst.org)
  • Also, the catalyst was reusable in five catalytic cycles without regeneration and no leaching of the active species was detected. (conicet.gov.ar)
  • A reductant, typically anhydrous ammonia (NH 3), aqueous ammonia (NH 4OH), or a urea (CO(NH 2) 2) solution, is added to a stream of flue or exhaust gas and is reacted onto a catalyst. (wikipedia.org)
  • Researchers have now discovered that it is possible to avoid by-products and at the same time make the process more sustainable by adding a small amount of gold to the catalyst. (lu.se)
  • Education is a catalyst for social justice, equality, and sustainable development. (lu.se)
  • MMO catalysts exhibit decade-long stability and superior CER activity even under corrosive conditions [ 6 , 7 ]. (jecst.org)
  • If an Industrial SCR catalyst NOx removal efficiency declines or ammonia usage increases significantly, it could signal a serious problem with the catalyst and inspection and performance testing by a qualified company should be scheduled. (environex.com)
  • The efficiency of the catalyst was then investigated in a few sets of engine operating conditions. (sae.org)
  • These catalysts can be used as either a fuel additive or as a washcoating. (cdc.gov)
  • Hence, the design of selective CER electrocatalysts is critically important. (jecst.org)
  • In this review, we provide an overview of the fundamental issues related to the electrocatalysis of the CER and design strategies for selective CER electrocatalysts. (jecst.org)