Catalysts heterogeneous catalysis journal of catalysis. Medical search. Frequent questions

He has 37 publications, over 20 presentations in meetings and congresses, holds 3 patents, and co-edited 1 book and 4 special journal issues in Topics in Catalysis, Catalysts, and Catalysis Today. (ucsb.edu)

Very recently, there has been a lot of developments in gold catalysis for the synthesis of organic molecules including the C-C bond forming homocoupling or cross-coupling reactions and it has been speculated that some of these catalysts could find applications in various fields. (wikipedia.org)
Metal nanoparticles have proven to be the excellent catalysts for inorganic synthesis, pollution treatments and fuel cell, due to their quantum effect, high surface-tovolume ratio and surface energy [ 14 - 16 ]. (omicsonline.org)
His main interests are the development of catalysts for the conversion of abundant renewable and alternative feedstocks to chemicals and fuels by a combination of controlled synthesis of materials, kinetics, and spectroscopic tools. (ucsb.edu)
Dr. Fujdala received his Ph.D. from the University of California, Berkeley and has extensive experience in nanocomposite material synthesis and heterogeneous catalysis. (ai-online.com)
Advanced Synthesis & Catalysis (ASC) is the leading primary journal in organic, organometallic, and applied chemistry. (wiley-vch.de)
The high impact of ASC can be attributed to the unique focus of the journal, which publishes exciting new results from academic and industrial labs on efficient, practical, and environmentally friendly organic synthesis. (wiley-vch.de)
Therefore, as a starting point it is crucial to understand the processes involved in the synthesis of the catalyst and especially the sulfurization/activation step. (iucr.org)
In Situ Neutron Scattering Study of the Structure Dynamics of the Ru/Ca2N:e- Catalyst in Ammonia Synthesis. (ornl.gov)
Schüth, F. High-Throughput Screening under Demanding Conditions: Cu/ZnO Catalysts in High Pressure Methanol Synthesis as an Example. (mpg.de)
Fischer-Tropsch Synthesis on Multicomponent Catalysts: What Can We Learn from Computer Simulations? (ua.pt)
This Special Issue is targeted to collect quality papers about the synthesis and application of New Heterogeneous Catalysts for Biomass Conversion. (lidsen.com)
Fourier Transform Infrared (FTIR) and Nano Laser-Particle Size Analyzer (NL-PSA) were used to characterized the catalyst obtained, metal loading and leaching of the copper content was measured by Atomic Absorption Spectroscopy (AAS) and the formation of product from transesterification reaction was analyzed by Gas Chromatography-Mass Spectroscopy (GC-MS). FTIR spectra reveal a successful synthesis of modified silica and the immobilized Cu(II)-acetonitrile complex on it. (ugm.ac.id)
These OPNs also allow the in situ synthesis and stabilization of gold nanoparticles within the polymer networks which demonstrate effective heterogeneous, catalytic reduction of the aromatic nitro to amino group. (iisc.ac.in)

2019 - Partial-PGMs Summer School , Characterization of catalysts under transient conditions, Albarella, Italy. (psi.ch)

Cobalt- and nickel-promoted molybdenum sulfide catalysts supported on porous oxides, such as alumina, have been used since the early years of the previous century. (iucr.org)
The main technologies for methane conversion are based on solid and liquid catalysts such as metals, oxides and oxide-supported metals. (urfu.ru)
This paper focuses on the critical analysis of H/D isotope exchange studies of the methane activation mechanism over various metals, oxides, composites, and other catalysts, from the earlier studies to the recent advances in the field. (urfu.ru)
In order to illustrate the interaction between CeO2 and Fe2O3 in catalyst, we examine the oxides of different Ce/Fe ratio. (ncl.edu.tw)

However, the heterogeneous catalysts are considerably less reactive and selective compared to homogeneous catalysts. (teknoscienze.com)
The studies on heterogeneous catalysts applied in biomass conversion are in dynamic growth, although still efforts have to be done considering that several industrial plants are still based on the use of homogeneous catalysts. (lidsen.com)

The selectivity and activity of gold nanoparticles can be finely tuned by varying the choice of support material, with e.g. titania (TiO2), hematite (α-Fe2O3), cobalt(II/III) oxide (Co3O4) and nickel(II) oxide (NiO) serving as the most effective support materials for facilitating the catalysis of CO combustion. (wikipedia.org)
Heterogeneous catalysts based on supported metal nanoparticles are commonly used in many industrially relevant catalytic reactions. (eurekaselect.com)

In the past, heterogeneous gold catalysts have found commercial applications for the industrial production of polyvinyl chloride (PVC), methyl methacrylate, and catalytic converters. (wikipedia.org)
The turnover frequency (TOF) of CO oxidation on these cationic gold catalysts is in the order of magnitude of 0.01 s−1, exhibiting the very high activation energy of 138 kJ/mol. (wikipedia.org)

In the case of powder catalysts prepared by wet methods, the surface OH− groups on the support provide sufficient aid as co-catalysts, so that no additional moisture is necessary. (wikipedia.org)
The apparent activation energy of CO oxidation on supported gold powder catalysts prepared by wet methods is 2-3 kJ/mol above 333 K (60 °C) and 26-34 kJ/mol below 333 K. These energies are low, compared to the values displayed by other noble metal catalysts (80-120 kJ/mol). (wikipedia.org)

Focusing on the fields of quantum computational nanoscience, chemistry, materials science, and chemical engineering, Nanostellar utilizes Rational Catalyst Design, which combines computational approaches with targeted experiments, to accelerate the development of new materials. (ai-online.com)
Journal of Physical Chemistry B 2003 , 107 , 10552-10556. (mpg.de)
Open Journal of Inorganic Chemistry, 03 (01), 14-25. (uran.ua)
Porous Organic Polymers as Heterogeneous Catalysts for Visible Light-Induced Organic Transformations[J]. Chinese Journal of Organic Chemistry , 2020, 40(11): 3777-3793. (sioc-journal.cn)
Heterogeneous catalysis is an important field in chemistry that is applied widely in academia and in industry. (teknoscienze.com)
Journal of energy chemistry, 2017. (ncl.edu.tw)
Wax on, wax off: Bifunctional cobalt-based catalysts on zeolite supports are applied for the valorization of biosyngas through Fischer-Tropsch chemistry. (edu.sa)

In this presentation, we will discuss current advances in our group in the use of combined in situ/operando spectroscopy and reaction kinetics (aka spectrokinetics) to assist in the analysis of active sites, reaction intermediates, their kinetic relevance and how this knowledge contributes to better understanding of heterogeneous catalysts. (ucsb.edu)
2018 - SCS Seminar 2018/1 - Catalysis across scales, Spectroscopy of catalysts - which one shall I choose? (psi.ch)
By combining Polarization Modulated - InfraRed Reflection Absorption Spectroscopy (PM-IRRAS) with two dimensional-Surface Optical Reflectance (2D-SOR) and Planar Laser Induced Fluorescence (PLIF), we can simultaneously measure the adsorbed species on the catalyst surface, monitor the surface oxide formation across the catalyst surface and image the gas phase right above the catalyst surface, respectively. (lu.se)

They also play an essential part in developing sustainable technologies for biomass conversion to chemicals and fuels and for environmental mitigation such as in automobile exhaust catalysts, conversion of greenhouse gases such as methane and carbon dioxide, and in recycling of waste plastics. (ucsb.edu)
Methane is a highly stable molecule, and the analysis of the catalytic activity of materials with respect to the C-H bond cleavage in methane is of paramount importance for the development of novel methane conversion catalysts. (urfu.ru)
One of the most promising methods for studying methane activation over a catalyst is H/D isotope exchange between the gas and condensed phases. (urfu.ru)
The existing theoretical and experimental approaches to study the H/D exchange between methane and a catalyst are discussed in the paper. (urfu.ru)
A critical analysis of the structure-composition-catalytic activity relationships of the catalysts with respect to methane activation is provided. (urfu.ru)
Menon U, Rahman M, Khatib SJ, A critical literature review of the advances in methane dehydroaromatization over multifunctional metal-promoted zeolite catalysts, Appl. (urfu.ru)
In silico search for novel methane steam reforming catalysts. (stanford.edu)
Development of molecular and solid catalysts for the direct low-temperature oxidation of methane. (rwth-aachen.de)
What's particularly fascinating about these results is that methane addition yields an alkylidene complex,' says Duncan Wass, a homogeneous catalysis expert at the University of Bristol, UK. (chemistryworld.com)
Such species have previously been implicated in heterogeneous catalysis with methane and are well-known as powerful catalysts in C-C bond forming reactions, so it opens lots of possibilities. (chemistryworld.com)

In comparison to a-surface that is prevalently exposed in unoriented HAP-based catalysts, the c-surface (i.e., (002) crystalline plane) of HAP-based catalysts exhibited up to 47-fold enhancement in areal rate in both reactions. (osti.gov)
Catalysis-Hub.org, an open electronic structure database for surface reactions. (stanford.edu)
Catalysis Research is an international peer-reviewed Open Access journal published quarterly online by LIDSEN Publishing Inc. This periodical is devoted to publishing high-quality papers that describe the most significant and cutting-edge research in all areas of catalysts and catalyzed reactions. (lidsen.com)
In a single measurement, we are able to follow heterogeneous catalytic reactions temporally- and spatially resolved with all three optical techniques, which are additionally supported by Mass Spectrometry (MS). To validate the experimental setup, we perform two experiments studying CO oxidation on Pd(100) at 150 mbar and 910 mbar by ramping the sample temperature. (lu.se)

Schüth, F. How to Design Diverse Libraries of Solid Catalysts? (mpg.de)

Applications of transition metal sulfide catalysts for deoxygenation processes are highlighted, and compared to the performances of noble metal and metal carbide, nitride, and phosphide catalysts. (rsc.org)

In the last decade, there were different attempts and various approaches for developing new heterogeneous catalytic materials with improved reactivity and selectivity. (teknoscienze.com)
Advances in heterogeneous catalysis are driven by the structure-function relationships that define catalyst performance ( i.e. , activity, selectivity, lifetime). (rsc.org)
By using these catalysts, waxes can be hydrocracked to shorter-chain hydrocarbons, increasing the selectivity towards the C 5 -C 11 (gasoline) fraction. (edu.sa)
The zeolite topology and the amount and strength of acid sites are key parameters to maximize the performance of these bifunctional catalysts, steering Fischer-Tropsch product selectivity towards liquid hydrocarbons. (edu.sa)

Gold can be a very active catalyst in oxidation of carbon monoxide (CO), i.e. the reaction of CO with molecular oxygen to produce carbon dioxide (CO2). (wikipedia.org)
Au and Pt Remain Unoxidized on a CeO2-Based Catalyst during the Water Gas Shift Reaction. (us.es)
However, determining active sites and true reaction intermediate species in heterogeneous catalysis remains a challenge. (ucsb.edu)
This is especially a problem at the forefront of catalysis research at which novel catalysts are developed and novel reaction systems are described from scratch. (uni-bayreuth.de)
DFT based calculations were employed in the study of the dissociation of the water molecule onto copper and nickel (110) and (111) surface models, incorporating two additional metallic elements, because it was found previously that metal alloying leads to strong synergic effects in the catalysis of this reaction. (ua.pt)
Encouragingly, the calculations predict a facile dissociation of the water molecule onto the (AlZn) Cu(111) catalyst model which is in agreement with recent experimental studies where it was found that a Cu0.5Zn0.5Al2O4 spinel oxide catalyst holds improved activity for the water gas shift reaction. (ua.pt)
Focus is placed on studies that made use of model compounds for comparisons of catalysts and the reaction networks they promote. (rsc.org)
The results show that the deoxygenation reaction has an onset temperature at about 400 °C with all the catalysts, and with a maximum at around 600 °C under the test conditions. (ncl.edu.tw)
Catalysts have played an important role in many industries because they allow the reaction occurs faster. (ugm.ac.id)
The aim of this work were to synthesize and characterize a Cu(II)-acetonitrile complex immobilized on modified silica and to investigate its catalytic activity at optimal condition (catalyst concentration, stirring rate, and the duration of reaction) in transesterification of frying oil. (ugm.ac.id)

International Journal of Pharmaceutics, 2023, 123086. (mierapetritou.com)
Catalysis Today 2023, 418, 114124. (mierapetritou.com)
Muzzio, F.., Optimal quantification of residence time distribution profiles from a quality assurance perspective , International Journal of Pharmaceutics 634, 2023, 122653. (mierapetritou.com)
Ierapetritou, M., A mathematical modeling approach for supply chain management under disruption and operational uncertainty AIChE Journal, 2023, 69, e18037. (mierapetritou.com)

In general, it is found that bifunctional catalysts are required for deoxygenation in a single reactor, with bifunctionality achieved on the catalyst or in conjunction with the catalyst support. (rsc.org)

precursor of efficient NO reduction catalyst under three-way catalysis studied by operando high energy X-ray diffraction, PCCP , 22 (2020) 18798. (psi.ch)

We present a combination of optical operando techniques that allow us to bridge the pressure gap in heterogeneous catalysis. (lu.se)

H2-rich syngas production from biogas reforming: Overcoming coking and sintering using bimetallic Ni-based catalysts. (us.es)
A Bayesian framework for adsorption energy prediction on bimetallic alloy catalysts. (stanford.edu)

He is in the editorial board of the open access journal Catalysts and editor-in-chief of its Biomass Catalysis section. (ucsb.edu)
I am pleased to invite you to submit manuscripts for this Special Issue on Development of New Heterogeneous Catalysts for Biomass Conversion, in the form of research papers, communications, letters, and review articles. (lidsen.com)
In this review, we focus on recent advances in heterogeneous catalysts for hydrodeoxygenation of biomass pyrolysis products. (rsc.org)

The most cited articles from Catalysis Communications published since 2020, extracted from Scopus . (elsevier.com)

The oxidation of carbon monoxide by oxygen using two catalysts prepared by two different methods has been investigated. (ugm.ac.id)

These intrinsic optoelectronic properties make HOFs an attractive and unique class of photoactive and electroactive porous materials for catalysis, sensing, and biomedical applications. (eurekalert.org)
The recent applications of porous organic polymers (POPs) as heterogeneous catalysts for visible light-induced organic transformations are summarized. (sioc-journal.cn)

Hence, in this concept paper common pitfalls in carrying out and reporting catalytic experiments ranging from heterogeneous thermal catalysis to photo- and electrocatalysis are briefly summarized and solutions how to avoid these issues are presented. (uni-bayreuth.de)

Nahar G, Dupont V, Hydrogen production from simple alkanes and oxygenated hydrocarbons over ceria-zirconia supported catalysts: Review, Renew. (urfu.ru)
Effect of magnetic field on the hydrogen evolution activity using non-magnetic Weyl semimetal catalysts. (mpg.de)
Descriptor for Hydrogen Evolution Catalysts Based on the Bulk Band Structure Effect. (mpg.de)
Topological Engineering of Pt-Group-Metal-Based Chiral Crystals toward High-Efficiency Hydrogen Evolution Catalysts. (mpg.de)
An Ideal Platform for Understanding Surface Properties and Catalysis for Hydrogen Evolution. (mpg.de)
Catalysts that activate hydrogen well will be preferred for ex situ catalytic pyrolysis conditions (upgrading downstream of pyrolysis reactor prior to condensation of bio-oil, pressures near atmospheric, temperatures between 350-500 °C). Supports that limit chemisorption of large reactants (leading to blockage of catalyst sites) should be employed. (rsc.org)
Finally, the stability of the catalyst and support in high-steam and low hydrogen-to-carbon environments will be critical. (rsc.org)

Recent advances on gas-phase CO2 conversion: Catalysis design and chemical processes to close the carbon cycle. (us.es)
Here we highlight selected papers showing some advances in the preparation of new heterogeneous catalysts. (teknoscienze.com)
Designing of highly selective and high-temperature endurable RWGS heterogeneous catalysts: recent advances and the future directions. (ncl.edu.tw)

POP-based photocatalysis combines visible light utility and catalyst recycling and thus represents a green and sustainable technique. (sioc-journal.cn)

ChemCatChem: heterogeneous & homogeneous & bio-catalysis 4 (4), 495-503 (2012). (mpg.de)

Heterogeneous catalysts are present in over 70% of industrial chemical processes. (ucsb.edu)

Nanostellar, Inc. provides diesel automotive and stationary power industries with nano-engineered catalyst materials that reduce exhaust emissions and increase the effectiveness of precious metals in catalysts. (ai-online.com)
Nanostellar's NS Gold(TM), the first advanced catalyst to use gold in combination with other precious metals to promote emissions reduction, was named as one of the most innovative products by R&D Magazine and Micro/Nano Newsletter in July 2007. (ai-online.com)

Theoretical heterogeneous catalysis based on atomistic simulations provides a fast way to screen materials and predict their relative performance. (stanford.edu)

Genetic Algorithm Procreation Operators for Alloy Nanoparticle Catalysts. (stanford.edu)
This review examines the existing literature of several types of the supported-metal nanoparticle heterogeneous catalysts. (eurekaselect.com)

In Situ Induction of Strain in Iron Phosphide (FeP 2 ) Catalyst for Enhanced Hydroxide Adsorption and Water Oxidation. (mpg.de)

Dr. Fujdala will describe the use of a Rational Catalyst Design process that tightly integrates both experimental and computational components to promote the efficient development of improved oxidation catalysts for treating diesel emissions. (ai-online.com)
Machine Learning for Computational Heterogeneous Catalysis. (stanford.edu)

Conversion of CO2 to added value products via rWGS using Fe-promoted catalysts: Carbide, metallic Fe or a mixture? (us.es)
Adsorption is present in many natural, physical, biological and chemical systems and is widely used in industrial applications such as heterogeneous catalysts , [8] [9] activated charcoal , capturing and using waste heat to provide cold water for air conditioning and other process requirements ( adsorption chillers ), synthetic resins , increasing storage capacity of carbide-derived carbons and water purification . (wikipedia.org)

Which Controls the Depolymerization of Cellulose in Ionic Liquids: The Solid Acid Catalyst or Ce. (rwth-aachen.de)

POPs possess rigid conjugated frameworks, relatively large surface areas, tunable porosity and typically insoluble in water or organic solvents, and thus ideal platforms for the development of heterogeneous catalysts. (sioc-journal.cn)

Besides enabling an optimal dispersion of the nanoclusters, the support materials have been suggested to promote catalysis by altering the size, shape, strain and charge state of the cluster. (wikipedia.org)
New inexpensive and efficient catalyst materials for energy transformations are necessary for future sustainable energy solutions. (stanford.edu)
Heterogeneous catalysis at the surface of topological materials. (mpg.de)

One of the main advantage of the heterogeneous catalysts is referred to the facile separation and recycling of such catalysts, which makes them economic and very attractive for a variety of applications. (teknoscienze.com)

Each peer-reviewed article that is published in a Bentham OPEN Journal is universally and freely accessible via the Internet in an easily readable and printable PDF format. (openchemicalengineeringjournal.com)
Catalysis Today , 427 , Article 114441. (lu.se)

Organisms2

Chemicals and Drugs103

Analytical, Diagnostic and Therapeutic Techniques and Equipment23

Psychiatry and Psychology3

Phenomena and Processes54

Disciplines and Occupations14

Anthropology, Education, Sociology and Social Phenomena6

Technology, Industry, Agriculture8

Humanities4

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Named Groups1

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Geographicals2

Topics in Catalysis1

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Characterization1

Oxides4

Homogeneous catalysts2

Nanoparticles2

Gold catalysts2

Powder catalysts2

Chemistry7

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Methane10

Reactions4

Solid Catalysts1

Sulfide catalysts1

Selectivity4

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20234

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Studied by operando1

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Biomass3

20201

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