The Mechanism of Hydrocarbon Oxygenate Reforming: C-C Bond Scission, Carbon Formation, and Noble-Metal-Free Oxide Catalysts

被引：10

作者：

Lykhach, Yaroslava ^{[1
]}

Neitzel, Armin ^{[1
]}

Sevcikova, Klara ^{[2
]}

Johanek, Viktor ^{[2
]}

Tsud, Nataliya ^{[2
]}

Skala, Tomas ^{[2
]}

Prince, Kevin C. ^{[3
,4
]}

Matolin, Vladimir ^{[2
]}

Libuda, Joerg ^{[1
,5
]}

机构：

[1] Univ Erlangen Nurnberg, Lehrstuhl Phys Chem 2, D-91058 Erlangen, Germany

[2] Charles Univ Prague, Dept Surface & Plasma Sci, CR-18000 Prague, Czech Republic

[3] Sincrotrone Trieste SCpA, I-34149 Basovizza Trieste, Italy

[4] IOM, I-34149 Basovizza Trieste, Italy

[5] Univ Erlangen Nurnberg, Erlangen Catalysis Resource Ctr, D-91058 Erlangen, Germany

来源：

CHEMSUSCHEM | 2014年 / 7卷 / 01期

关键词：

catalytic reforming; ceria; heterogeneous catalysis; photoelectron spectroscopy; platinum; HYDROGEN-PRODUCTION; CARBOXYLIC-ACIDS; ETHYLENE-GLYCOL; FAST PYROLYSIS; BIO-OILS; ADSORPTION; SURFACE; BIOMASS; FUELS; DECOMPOSITION;

D O I：

10.1002/cssc.201301000

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Towards a molecular understanding of the mechanism behind catalytic reforming of bioderived hydrocarbon oxygenates, we explore the C-C bond scission of C-2 model compounds (acetic acid, ethanol, ethylene glycol) on ceria model catalysts of different complexity, with and without platinum. Synchrotron photoelectron spectroscopy reveals that the reaction pathway depends very specifically on both the reactant molecule and the catalyst surface. Whereas C-C bond scission on Pt sites and on oxygen vacancies involves intermittent surface carbon species, the reaction occurs without any carbon formation and deposition for ethylene glycol on CeO2(111).

引用

页码：77 / 81

页数：5

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