Strong synergism between gold and manganese in an Au-Mn/triple-oxide-support (TOS) oxidation catalyst

被引：14

作者：

Ali, Arshid M. ^{[1
]}

Daous, Muhammad A. ^{[1
]}

Khamis, Ahmad A. M. ^{[1
]}

Driss, Hafedh ^{[1
]}

Burch, Robbie ^{[2
]}

Petrov, Lachezar A. ^{[3
]}

机构：

[1] King Abdulaziz Univ, Fac Engn, Dept Chem & Mat Engn, Jeddah 21589, Saudi Arabia

[2] Queens Univ Belfast, Sch Chem & Chem Engn, Belfast BT7 1NN, Antrim, North Ireland

[3] King Abdulaziz Univ, SABIC Chair Catalysis, Jeddah 21589, Saudi Arabia

来源：

APPLIED CATALYSIS A-GENERAL | 2015年 / 489卷

关键词：

VOLATILE ORGANIC-COMPOUNDS; PROPANE SELECTIVE OXIDATION; VAN KREVELEN MECHANISM; MIXED OXIDES; THIN-FILMS; COMBUSTION; REDUCTION; REMOVAL; VOCS; MARS;

D O I：

10.1016/j.apcata.2014.10.006

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A strong synergism between Au and Mn substantially increased the catalytic activity of the Au-Mn/TOS catalyst for the complete propane oxidation as compared to the activity of mono metal Au/TOS and Mn/TOS catalysts. The high activity of Au-Mn/TOS catalyst is a result of the formation of Au2Mn or Au5Mn2 phases and enhanced mobility of the oxygen in the support oxides. XPS, TPR, TEM and XRD studies were used to characterise the catalysts. Based on the results, a possible mechanism for the participation of the non-stoichiometric and lattice oxygen is also proposed. It is suggested that a joint effect of the Au and Mn increased the non-stoichiometric and lattice oxygen mobility of the Au-Mn/TOS catalyst, potentially being dominated by Mn. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：24 / 31

页数：8

共 34 条

[1] Synthesis and physicochemical characterizations of nanostructured Pt/Al2O3-CeO2 catalysts for total oxidation of VOCs
Abbasi, Zahra
Haghighi, Mohammad
Fatehifar, Esmaeil
Saedy, Saeed
[J]. JOURNAL OF HAZARDOUS MATERIALS, 2011, 186 (2-3) : 1445 - 1454
[2] Conventional versus lattice photocatalysed reactions: Implications of the lattice oxygen participation in the liquid phase photocatalytic oxidation with nanostructured ZnO thin films on reaction products and mechanism at both 254 nm and 340 nm
Ali, Arshid M.
Emanuelsson, Emma A. C.
Patterson, Darrell A.
[J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2011, 106 (3-4) : 323 - 336
[3] Photocatalysis with nanostructured zinc oxide thin films: The relationship between morphology and photocatalytic activity under oxygen limited and oxygen rich conditions and evidence for a Mars Van Krevelen mechanism
Ali, Arshid M.
Emanuelsson, Emma A. C.
Patterson, Darrell A.
[J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2010, 97 (1-2) : 168 - 181
[4] Cu-Mn and Co-Mn catalysts synthesized from hydrotalcites and their use in the oxidation of VOCs
Antonio Aguilera, Daniel
Perez, Alejandro
Molina, Rafael
Moreno, Sonia
[J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2011, 104 (1-2) : 144 - 150
[5] Kinetic modeling of the total oxidation of propane over Cu- and Ce-based catalysts
Balcaen, V.
Poelman, H.
Poelman, D.
Marin, G. B.
[J]. JOURNAL OF CATALYSIS, 2011, 283 (01) : 75 - 88
[6] Total oxidation of ethyl acetate, ethanol and toluene catalyzed by exotemplated manganese and cerium oxides loaded with gold
Bastos, S. S. T.
Carabineiro, S. A. C.
Orfao, J. J. M.
Pereira, M. F. R.
Delgado, J. J.
Figueiredo, J. L.
[J]. CATALYSIS TODAY, 2012, 180 (01) : 148 - 154
[7] BOND GC, 2006, CATALYSIS GOLD IMPER
[8] Reactions for the partial oxidation of propane over Pt-on-Ceria
Dadyburjor, Dady B.
Das, Tapan K.
Kugler, Edwin L.
[J]. APPLIED CATALYSIS A-GENERAL, 2011, 392 (1-2) : 127 - 135
[9] Preparation, characterization and application of a Ce-Ti oxide adsorbent for enhanced removal of arsenate from water
Deng, Shubo
Li, Zhijian
Huang, Jun
Yu, Gang
[J]. JOURNAL OF HAZARDOUS MATERIALS, 2010, 179 (1-3) : 1014 - 1021
[10] The universal character of the Mars and Van Krevelen mechanism
Doornkamp, C
Ponec, V
[J]. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2000, 162 (1-2) : 19 - 32

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