Kinetic study of oxidative coupling of methane over Mn and/or W promoted Na2SO4/SiO2 catalysts

被引：14

作者：

Ghiasi, M. ^{[1
]}

Malekzadeh, A. ^{[1
]}

Hoseini, S. ^{[2
]}

Mortazavi, Y. ^{[3
]}

Khodadadi, A. ^{[3
]}

Talebizadeh, A. ^{[3
]}

机构：

[1] Damghan Univ, Sch Chem, Damghan, Iran

[2] Ferdowsi Univ Mashhad, Sch Chem Engn, Mashhad, Iran

[3] Univ Tehran, Sch Chem Engn, Tehran, Iran

来源：

JOURNAL OF NATURAL GAS CHEMISTRY | 2011年 / 20卷 / 04期

关键词：

oxidative coupling of methane (OCM); kinetic modelling; genetic algorithm; fixed-bed reactor; MN/NA2WO4/SIO2; CATALYST; GENETIC ALGORITHM; MECHANISMS; OXIDE; OPTIMIZATION; CONVERSION; REACTOR; LI/MGO; ALKALI; MGO;

D O I：

10.1016/S1003-9953(10)60199-5

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A comprehensive kinetic model for oxidative coupling of methane (OCM) over Mn and/or W promoted Na2SO4/SiO2 catalysts was developed based on a micro-catalytic reactor data. The methane conversion and ethylene, ethane, carbon monoxide and carbon dioxide selectivities were obtained in a wide operating condition range of 750-825 degrees C, CH4/O-2 = 2.5-10 and contact time = 267-472 kg.s.m(-3). Reaction networks of six models with different rate equation types were compared together. The kinetic rate parameters of each reaction network were estimated using linear regression or genetic algorithm optimization method (GA). A reaction network suggested by Stansch et al. for OCM was found to be the best one and was further used in this work. The suggested model could predict the experimental results of OCM reaction within a deviation range of +/- 20%.

引用

页码：428 / 434

页数：7

共 35 条

[1] EFFECTS OF CO2 DURING OXIDATIVE COUPLING OF METHANE OVER LI/MGO - MECHANISMS AND MODELS [J].