• Gold(III) salts, especially Na[AuCl4], provide an alternative to mercury(II) salts as catalysts for reactions involving alkynes. (wikipedia.org)
  • Selective oxidation of organic compounds, such as alcohols and aldehydes, is a highly important transformation traditionally performed in industry using either stoichiometric oxidants, such as Mn- and Cr-containing salts, or, less frequently, homogeneous catalysts. (europa.eu)
  • The stoichiometric oxidants have a strong environmental impact by producing a large amount of waste, often toxic/carcinogenic, while homogeneous catalysts have a recyclability issue due to the difficulty of their separation from the product mixture. (europa.eu)
  • We started the project with investigating the preparation of gold catalysts using gold colloids and removal or stabilizing polymer (polyvinylpyrrolidone, PVP) from the supported metal nanoparticles. (europa.eu)
  • We have further proceeded with investigating gold catalysts supported on other materials in the oxidation of HMF. (europa.eu)
  • 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)
  • 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)
  • Isolable gold (I) complexes having one low-coordinating ligand as catalysts for the selective hydration of substituted alkynes at room temperature without acidic promoters. (upv-csic.es)
  • Weidenthaler, C. Influence of the Microstructure of Gold-Zirconia Yolk-Shell Catalysts on the CO Oxidation Activity. (mpg.de)
  • An example of heterogeneous catalysis is the reaction of oxygen and hydrogen on the surface of titanium dioxide (TiO 2 , or titania ) to produce water. (wikipedia.org)
  • Alternatively the ion track etched templates are filled with metal oxides by different means with a focus on functional materials (e.g. semiconducting or magnetic oxides), whose properties qualify them for applications in electro analysis, heterogeneous catalysis or photonics. (tu-darmstadt.de)
  • Specifically, this action investigates gold nanoparticles supported on carbon materials with tailored surface properties. (europa.eu)
  • The main objectives include gaining an insight into how the surface characteristics of carbon support materials affect activity, selectivity and stability of supported metal nanoparticles in liquid-phase oxidations of alcohols and aldehydes, as well as understanding whether surface basic groups on carbon support can replace homogeneous base used as a co-catalyst. (europa.eu)
  • Several ways to efficiently remove PVP from the supported gold nanoparticles without particle size change have been established, such as treatment with NaBH4 in combination with H2O. (europa.eu)
  • The free PVP remains adsorbed on the support after treatments and has no effect on the optical and catalytic properties of gold nanoparticles. (europa.eu)
  • A range of carbons with different surface chemistries have been prepared and used as supports for gold nanoparticles. (europa.eu)
  • As a result of this work we demonstrated that activity and selectivity of gold nanoparticles supported on carbon in the oxidation of 5-hydroxymethylfurfural (HMF) can be controlled by tuning the surface properties of the support. (europa.eu)
  • Humans have developed and used nanomaterials since a very long time as evidenced by the ruby red colour of some glass which is due to the entrapment of gold nanoparticles in the glass matrix. (hindawi.com)
  • Appearance of ruby red colour of the colloidal gold solution results as a formation of small gold nanoparticles [ 4 ]. (hindawi.com)
  • for example, tri-sodium citrate [ 7 - 9 ] and sodium borohydride [ 10 ] are being used for the reduction of gold chloride and silver nitrate solutions to form gold and silver nanoparticles, respectively, for decades. (hindawi.com)
  • Ostwald in as early as 1917 reported that chloroauric acid solutions can be reduced to gold nanoparticles employing tannin even when tap water is used to prepare aqueous solutions [ 12 ]. (hindawi.com)
  • 2019. "Mechanistic Investigation of Phytochemicals Involved in Green Syn-thesis of Gold Nanoparticles Using Aqueous Elaeis Guineensis Leaves Extract: Role of Phenolic Compounds and Flavonoids. (unison.mx)
  • Streptavidin gold nanoparticles (GNP) were conjugated to biotinylated lectin bonded to the carbohydrate in the glycoprotein to magnify the change in impedance signal and enhance detection sensitivity. (bvsalud.org)
  • The results of this project have been published in ACS Catalysis (10.1021/acscatal.7b00829) and reported at ACS national meeting in 2016 (oral presentation), North American meeting on catalysis in 2017 (poster presentation), and further expected to be reported at several meetings in 2018. (europa.eu)
  • He received his PhD in 2018 from the University of Heidelberg working in the field of homogeneous gold-catalysis under the supervision of Prof. Dr. A. S. K. Hashmi. (advanceseng.com)
  • Carte Blanche® atteste que la collecte et le traitement de vos données au travers de ce site respectent les directives du Règlement Général sur la Protection des Données (RGPD) entrées en vigueur le 25 mai 2018 ainsi que la loi française Informatique et Libertés du 6 janvier 2018. (scf2023.fr)
  • We discuss electrochemical roughening, a method based on the etching and redeposition of material from a flat surface, to create homogeneous, nanostructured, and nanoporous gold electrodes. (fruits-unist.com)
  • Voltammetric responses showing electrocatalytic hydrogen oxidation mediated by the homogeneous electrocatalyst Ni(P Cy 2 N t-Bu 2 ) 2 (BF 4 ) 2 are identical at glassy carbon and gold electrodes, which shows that gold electrode can be used for hydrogen oxidation reaction. (jept.de)
  • We have found that basic surface groups cannot efficiently replace homogeneous base, however the surface properties of carbon support have a profound effect on the catalyst activity, selectivity and stability. (europa.eu)
  • Starting from an o , o -dimethyl-substituted propargyl ether and different alkynes, the team synthesized polycycles using [JohnPhosAu(NCMe)]SbF 6 as a gold(I) catalyst. (chemistryviews.org)
  • B. M. Choudary, A. D. Prasad, V. Bhuma and V. Swapna, "Chromium-Pillared Clay as a Catalyst for Benzylic Oxidation and Oxidative Deprotection of Benzyl Ethers and Benzylamines: a Simple and Convenient Procedure," The Journal of Organic Chemistry, Vol. 57, No. 22, 1992, pp. 5841-5844. (scirp.org)
  • Z. Lounis, A. Riahi, F. Djafri and J. Muzart, "Chromium-Exchanged Zeolite (CrE-ZSM-5) as Catalyst for Alcohol Oxidation and Benzylic Oxidation with t-BuOOH," Applied Catalysis A: General, Vol. 309, No. 2, 2006, pp. 270-272. (scirp.org)
  • Gold and glassy carbon working electrode materials are compared as suitable substrates for the hydrogen oxidation reaction with Ni(P Cy 2 N t-Bu 2 ) 2 (BF 4 ) 2 used as a catalyst. (jept.de)
  • Gebhard Haberhauer, University of Duisburg-Essen, Essen, Germany, and colleagues have developed a gold(I)-catalyzed one-pot synthesis of complex polycycles via a dearomatization and an allene-diene-alkyne coupling (pictured below). (chemistryviews.org)
  • The mechanism can be described as a cascade reaction in two steps: First, an allene is formed by gold(I)-catalyzed dearomatization. (chemistryviews.org)
  • This work has been reported at the Netherlands' catalysis and chemistry conference in 2017 (oral presentation), and published in ChemCatChem (10.1002/cctc.201701760). (europa.eu)
  • Chemistry: A European Journal , 24(4), pp. 937-943. (gla.ac.uk)
  • 6]. S.E. Mousavi, A. Bozorgian, Investigation the Kinetics of CO2 Hydrate Formation in the Water System+ CTAB+ TBAF+ ZnO, International Journal of New Chemistry ,7(3) (2020), 195-219. (ijashss.com)
  • 11]. A. Samimi, S. Zarinabadi, A. Bozorgian, Optimization of Corrosion Information in Oil and Gas Wells Using Electrochemical Experiments, International Journal of New Chemistry (2020). (ijashss.com)
  • 13]. A. Bozorgian, A. Samimi, A review of Kinetics of Hydrate Formation and the Mechanism of the Effect of the inhibitors on it, International Journal of New Chemistry (2020). (ijashss.com)
  • I am member of the Editorial Board of Recent Patents on Anti-Cancer Drug Discovery (Bentham Science Publishers), Molecules (MDPI) and Frontiers in Chemistry - Inorganic Chemistry (Frontiers Media), and I act regularly as a reviewer for journals published by the major scientific publishing houses. (universityofgalway.ie)
  • Arabian Journal of Chemistry 12 (3): 330-49. (unison.mx)
  • The ion insertion redox chemistry of manganese dioxide has diverse applications in energy storage, catalysis, and chemical separations. (stanford.edu)
  • Chemistry - An Asian Journal. (elsevierpure.com)
  • The suggested double cycloisomerization mechanism delineates the first example of a stepwise [5+3] cycloaddition pathway in gold catalysis, a mode of reactivity that is also sparse in organic chemistry. (edu.au)
  • American Journal of Analytical Chemistry , 11 , 15-24. (scirp.org)
  • I lead tutorials for the CHEM3003 (Bioinorganic and Metal Coordination Chemistry) and CHEM3002 (Catalysis) modules. (nottingham.ac.uk)
  • Host-Guest Chemistry in Boron Nitride Nanotubes: Interactions with Polyoxometalates and Mechanism of Encapsulation JOURNAL OF THE AMERICAN CHEMICAL SOCIETY. (nottingham.ac.uk)
  • The Journal of Physical Chemistry C 2012 , 116 , 19405-19412. (mpg.de)
  • The Journal of Physical Chemistry C 2010 , 114 , 19386-19394. (mpg.de)
  • 5]. M. Abdollahbeigi, An Overview of the Paper Recycling Process in Iran, Journal of Chemical Reviews , 3 (1) (2020), 284-302. (ijashss.com)
  • 10]. M. Abdollahbeigi, Non-Climatic Factors Causing Climate Change, Journal of Chemical Reviews 2 (4) (2020), 303-319. (ijashss.com)
  • 12]. M. Abdollahbeigi, M. Asgari, Investigation of Nitrogen Removal in Municipal Wastewater Treatment Plants, Journal of Chemical Reviews , 2 (4) (2020), 257-272. (ijashss.com)
  • 15]. A. Bozorgian, Z. Arab Aboosadi, A. Mohammadi, B. Honarvar, A. Azimi, Evaluation of the effect of nonionic surfactants and TBAC on surface tension of CO2 gas hydrate, Journal of Chemical and Petroleum Engineering, 54(1) (2020), 73-81. (ijashss.com)
  • Après un séjour post-doctoral avec le Prof. Dr. A. Fürstner au Max Planck Institut für Kohlenforschung (Mülheim/Ruhr, Allemagne), il intègre le CNRS en 2006 au Laboratoire de Chimie de Coordination à Toulouse et est promu Directeur de recherche en 2020. (lcc-toulouse.fr)
  • Gold(III) chloride was prepared in 1951 by the reaction of powdered metallic gold and iodine monochloride: 2 Au + 6 ICl → 2 AuCl3 + 3 I2 However, it is most often prepared by passing chlorine gas over gold powder at 180 °C (356 °F): 2 Au + 3 Cl2 → Au2Cl6 The chlorination reaction can be conducted in the presence of tetrabutylammonium chloride, the product being the lipophilic salt tetrabutylammonium tetrachloraurate. (wikipedia.org)
  • For example, the reaction with potassium cyanide produces the water-soluble complex, K[Au(CN)4]: AuCl3 + 4 KCN → K[Au(CN)4] + 3 KCl Gold(III) fluoride can be also produced from gold(III) chloride by reacting it with bromine trifluoride. (wikipedia.org)
  • a variety of other arenes undergo a similar reaction: 2 PhH + Au2Cl6 → [PhAuCl2]2 + 2 HCl Gold(III) chloride reacts with carbon monoxide in a variety of ways. (wikipedia.org)
  • For example, the reaction of anhydrous AuCl3 and carbon monoxide under SOCl2 produces gold(I,III) chloride with Au(CO)Cl as an intermediate: 2 AuCl3 + 2 CO → Au4Cl8 + 2 COCl2 If carbon monoxide is in excess, Au(CO)Cl is produced instead. (wikipedia.org)
  • The fast reaction and mild conditions of the gold-catalysed method led to the development of a highly efficient process for radiolabelling of arenes, which constitutes the first example of an application of homogenous gold catalysis to selective radiosynthesis. (gla.ac.uk)
  • Experimental and Density Functional Theory (DFT) computational studies based on a proposed gold carbenoid species provides insight into this unique selectivity that leads to the assembly of the architecturally challenging bridged carbocyclic motif. (edu.au)
  • Their work is currently published in the research journal, Angewandte Chemie International Edition . (advanceseng.com)
  • 8]. M.J. Choobineh, M. Abdollahbeigi, B. Nasrollahzadeh, the formation of gas hydrate and the effect of inhibitors on their formation process, Journal of Fundamental Applied Science 8(2S) (2016), 1150-1159. (ijashss.com)
  • The properties of the glaze have been well enumerated in 1857 by Michael Faraday in his revolutionary study "Experimental relations of gold (and other metals) to light" [ 3 , 5 ]. (hindawi.com)
  • Make the best use of Scientific Research and information from our 700+ peer reviewed, Open Access Journals that operates with the help of 50,000+ Editorial Board Members and esteemed reviewers and 1000+ Scientific associations in Medical, Clinical, Pharmaceutical, Engineering, Technology and Management Fields. (omicsonline.org)
  • Editors select a small number of articles recently published in the journal that they believe will be particularly interesting to readers, or important in the respective research area. (mdpi.com)
  • The aim is to provide a snapshot of some of the most exciting work published in the various research areas of the journal. (mdpi.com)
  • Egyptian Journal of Aquatic Research 43 (4): 269-74. (unison.mx)
  • The paper is withdrawn from "Modern Research in Catalysis" due to personal reasons from the corresponding author of this paper. (scirp.org)
  • The journal will cover a broad range of systems and scales that significantly advance fundamental research, aid product and process development and explore new technological solutions, all in the context of core chemical engineering approaches. (nature.com)
  • He is currently on the editorial advisory board of some SCI journals. (chemistry.pt)
  • For instance, differently shaped nanostructures of silver and gold embody unique optical scattering properties [ 3 , 6 ]. (hindawi.com)
  • Gold(III) chloride, traditionally called auric chloride, is an inorganic compound of gold and chlorine with the molecular formula Au2Cl6. (wikipedia.org)
  • Another topic of interest is the development of novel synthesis methods for nanotubes, circumventing known problems like insufficient mass transport or homogeneous nucleation. (tu-darmstadt.de)
  • Colloidal gold particles have been used to ensure that particles are similar on all supports. (europa.eu)
  • M. Selvaraj, D. W. Park, S. Kawi and I. Kim, "Selective Synthesis of Benzophenone over Two-Dimentional Mesostructured CrSBA-15," Applied Catalysis A: General, Vol. 415-416, 2012, pp. 17-21. (scirp.org)
  • Applied Catalysis A: General. (elsevierpure.com)
  • Ordered Mesoporous Carbide Derived Carbons: Novel Materials for Catalysis and Adsorption. (upv-csic.es)
  • Each gold center is square planar in gold(III) chloride, which is typical of a metal complex with a d8 electron count. (wikipedia.org)
  • Gold(III) chloride is more stable in a chlorine atmosphere and can sublime at around 200 °C without any decomposition. (wikipedia.org)
  • Gold(III) chloride is the starting point for the chemical synthesis of many other gold compounds. (wikipedia.org)
  • However, under tetrachloroethylene and at 120 °C, gold(III) chloride is first reduced to gold(I) chloride, which further reacts to form Au(CO)Cl. (wikipedia.org)
  • Although gold(III) chloride has no commercial uses, it has many uses in the laboratory. (wikipedia.org)
  • 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)
  • Doctor en Química (Ph.D.), University of East Anglia, Inglaterra. (usach.cl)
  • The work has also been featured on a journal cover (10.1002/cctc.201800271). (europa.eu)
  • The "III" in the name indicates that the gold has an oxidation state of +3, typical for many gold compounds. (wikipedia.org)
  • M. Selvaraj and C. S. Ha, "Highly Selective Synthesis of Enones from Benzylic Compounds over CrSBA-15," Catalysis Today, Vol. 175, No. 1, 2011, pp. 546-551. (scirp.org)
  • N. Kornblum and H. E. DeLaMare, "The Base Catalyzed Decomposition of a Dialkyl Peroxide," Journal of The American Chemical Society, Vol. 73, No. 2, 1951, pp. 880-881. (scirp.org)
  • A synthetic method to prepare cycloalkyl‐ and (hetero)aryl‐fused bicyclo[3.3.1]nonane derivatives from gold(I)‐catalyzed cyclopropanation/[5+3] cycloaddition of 1,4,9‐ and 1,4,10‐allenenynes is described. (edu.au)