Synergism in methanol synthesis from carbon dioxide over gold catalysts supported on metal oxides

Sakurai, Hiroaki; Haruta, Masatake

doi:10.1016/0920-5861(95)00305-3

Cited by 151 publications

(93 citation statements)

References 5 publications

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“…Haruta and co-workers have already reported that supported gold catalysts on metal oxide are active for CO 2 hydrogenation towards methanol [4,5]. Fu et al [6] reported the excellent WGS activity of gold-ceria catalyst, and other groups have reported similar findings [7,8] Bimetallic catalysts frequently exhibit better catalytic performance than their monometallic counterparts and have therefore attracted a great deal of attention from both academic and industrial point of view.…”

Section: Introductionmentioning

confidence: 87%

Cu/Cr2O3·3Al2O3 and Au–Cu/Cr2O3·3Al2O3 catalysts for methanol synthesis and water gas shift reactions

Mierczyński

Maniecki

Maniukiewicz

et al. 2011

Reac Kinet Mech Cat

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A comparative study of the physicochemical properties of Cu/ Cr 2 O 3 Á3Al 2 O 3 and Au-Cu/Cr 2 O 3 Á3Al 2 O 3 supported catalysts and their catalytic activity in methanol synthesis and water gas shift reactions were the main subject of this study. The promotion effect of gold addition to Cu/support catalysts in the methanol synthesis reaction was proved. The formation of an Au-Cu alloy was confirmed by XRD technique. Methanol selectivity increased after gold introduction onto the catalyst surface, which can be explained by the creation of nucleation centers for copper crystallization by metallic gold particles during catalyst reduction.

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Section: Introductionmentioning

confidence: 87%

Cu/Cr2O3·3Al2O3 and Au–Cu/Cr2O3·3Al2O3 catalysts for methanol synthesis and water gas shift reactions

Mierczyński

Maniecki

Maniukiewicz

et al. 2011

Reac Kinet Mech Cat

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“…Be, Zn, and Au showed the best predicted activity, so we concentrated further investigations on beryllium, because Zn is used as a main component and Au shows low activity for methanol synthesis by CO2 hydrogenation 10) . Because the preparation procedure was different for Be additive, the effect of Al addition was also checked in Fig.…”

Section: Prediction Of Stymentioning

confidence: 99%

Screening Using Artificial Neural Network of Additives for Cu-Zn Oxide Catalyst for Methanol Synthesis from Syngas

Omata

Hashimoto

Sutarto

et al. 2005

J. Jpn. Petrol. Inst.

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The activity of Cu _ Zn oxide catalysts for methanol synthesis from syngas varies depending on the additives to the oxide, and optimum composition is sensitive to the reaction conditions. An artificial neural network (ANN) was applied to identify the most effective additives based on the experimental results already reported. The physicochemical characters of element X, such as ionic radii and ionization energy, and the activity of Cu _ Zn _ X oxide catalyst were correlated using the ANN. Twenty-two types of X were supplied for the training of the ANN, and 29 activities of Cu _ Zn _ X, the X of which was not included in the training data, were predicted. Beryllium was predicted as the most effective additive, which was verified experimentally.

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“…More recently, the interaction of metal oxides, especially TiO 2 [6][7][8][9][10], with small Au particles has been the subject of intense study. Small gold particles supported on metal oxides, including TiO 2 , are highly reactive oxidation catalysts, and a pronounced particle size effect was observed.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of TiO2 nanoparticles on the Au(111) surface

Biener

Farfan-Arribas

Biener

et al. 2005

The Journal of Chemical Physics

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The growth of titanium oxide nanoparticles on reconstructed Au(111) surfaces was investigated by scanning tunneling microscopy and X-ray photoelectron spectroscopy. Ti was deposited by physical vapor deposition at 300 K. Regular arrays of titanium nanoparticles form by preferential nucleation of Ti at the elbow sites of the herringbone reconstruction. Titanium oxide clusters were synthesized by subsequent exposure to O 2 at 300 K. Two-and three-dimensional titanium oxide nanocrystallites form during annealing in the temperature range from 600 to 900 K. At the same time, the Au(111) surface assumes a serrated, <110> oriented step-edge morphology, suggesting step-edge pinning by titanium oxide nanoparticles. The oxidation state of these titanium oxide nanoparticles varies with annealing temperature. Specifically, annealing to 900 K results in the formation of stoichiometric TiO 2 nanocrystals as judged by the observed XPS binding energies. Nano-dispersed TiO 2 on Au(111) is an ideal system to test the various models explaining the enhanced catalytic reactivity of supported Au nanoparticles. IntroductionMetal oxides are of considerable interest because of their technological importance, e.g. in the field of heterogeneous catalysis, where they are used as catalyst supports for a wide variety of metals. The interaction of the adsorbed metal particles with the oxide support is complex and gives rise to interesting phenomena such as the strong metal support interaction (SMSI). This term describes the change in catalytic activity (favoring hydrogenation) observed when group VIII B metals supported on reducible oxides (TiO 2 , TaO 5 , CeO 2 , NbO) are annealed in a reducing atmosphere [1]. Transition metal oxides are also used to support other oxides in the socalled monolayer catalysts. For example, V 2 O 5 /TiO 2 systems are used for the partial oxidation of methanol, and have been extensively studied in single crystal as well as in powder form [2][3][4][5].

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Synergism in methanol synthesis from carbon dioxide over gold catalysts supported on metal oxides

Cited by 151 publications

References 5 publications

Cu/Cr2O3·3Al2O3 and Au–Cu/Cr2O3·3Al2O3 catalysts for methanol synthesis and water gas shift reactions

Cu/Cr2O3·3Al2O3 and Au–Cu/Cr2O3·3Al2O3 catalysts for methanol synthesis and water gas shift reactions

Screening Using Artificial Neural Network of Additives for Cu-Zn Oxide Catalyst for Methanol Synthesis from Syngas

Synthesis of TiO2 nanoparticles on the Au(111) surface

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