Two-Site Mechanism for the Oxidation Reaction of Methane on Oxidized Palladium

被引：11

作者：

Cortes, Joaquin ^{[1
]}

Valencia, Eliana ^{[1
]}

Araya, Paulo ^{[1
]}

机构：

[1] Univ Chile, Fac Ciencias Fis & Matemat, Santiago, Chile

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 26期

关键词：

KINETIC PHASE-TRANSITIONS; MONTE-CARLO-SIMULATION; CATALYTIC COMBUSTION; SURFACE; WATER; TEMPERATURE; SUPPORT;

D O I：

10.1021/jp909575z

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：

Kinetics mechanisms with two independent sites are proposed for the adsorption steps of CH4 and O-2 in the CH4-O-2 reaction on an oxidized metal, assuming noncompetitive adsorption of the reactants in agreement with the experimental observations. This condition cannot be incorporated in the previous models with a single type of active site. Studies of the kinetics equations and Monte Carlo simulations of those mechanisms interpret reasonably well the experimental results of the literature for the reaction on oxidized Pd.

引用

页码：11441 / 11447

页数：7

共 36 条

[1]

Albano EV, 1996, HETEROGEN CHEM REV, V3, P389, DOI 10.1002/(SICI)1234-985X(199612)3:4<389::AID-HCR68>3.0.CO

[2]

2-2

[3]

Albano EV, 2000, SURF SCI SERIES, V89, P387

[4] Methane combustion over Pd/SiO2 catalysts with different degrees of hydrophobicity [J].

Araya, P ;

Guerrero, S ;

Robertson, J ;

Gracia, FJ .

APPLIED CATALYSIS A-GENERAL, 2005, 283 (1-2) :225-233

[5] Isotopic studies of methane oxidation pathways on PdO catalysts [J].

Au-Yeung, J ;

Chen, KD ;

Bell, AT ;

Iglesia, E .

JOURNAL OF CATALYSIS, 1999, 188 (01) :132-139

[6] Catalysts for combustion of methane and lower alkanes [J].

Choudhary, TV ;

Banerjee, S ;

Choudhary, VR .

APPLIED CATALYSIS A-GENERAL, 2002, 234 (1-2) :1-23

[7] Catalytic combustion of methane over palladium-based catalysts [J].

Ciuparu, D ;

Lyubovsky, MR ;

Altman, E ;

Pfefferle, LD ;

Datye, A .

CATALYSIS REVIEWS-SCIENCE AND ENGINEERING, 2002, 44 (04) :593-649

[8] Support and water effects on palladium based methane combustion catalysts [J].

Ciuparu, D ;

Pfefferle, L .

APPLIED CATALYSIS A-GENERAL, 2001, 209 (1-2) :415-428

[9] Monte Carlo and mean field theory studies of the effect of the next nearest neighbour sites of a square lattice on the monomer-dimer surface reaction [J].

Cortés, J ;

Valencia, E ;

Puschmann, H .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1999, 1 (07) :1577-1581

[10] Mean-field hierarchical equations for some A+BC catalytic reaction models [J].

Cortés, J ;

Puschmann, H ;

Vaencia, E .

JOURNAL OF CHEMICAL PHYSICS, 1998, 109 (14) :6086-6091

← 1 2 3 4 →