Partial oxidation of methane to synthesis gas over corundum supported mixed oxides: One channel studies

被引：15

作者：

Pavlova, S ^{[1
]}

Sazonova, N ^{[1
]}

Sadykov, V ^{[1
]}

Pokrovskaya, S ^{[1
]}

Kuzmin, V ^{[1
]}

Alikina, G ^{[1
]}

Lukashevich, A ^{[1
]}

Gubanova, E ^{[1
]}

机构：

[1] Novosibirsk State Univ, Siberian Branch, Boreskov Inst Catalysis, Russian Acad Sci, Novosibirsk 630090, Russia

来源：

CATALYSIS TODAY | 2005年 / 105卷 / 3-4期

关键词：

partial oxidation of methane; syngas; channel of monolith; LaNiOx/CeO2-ZrO2/alpha-Al2O3;

D O I：

10.1016/j.cattod.2005.06.030

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Catalytic partial oxidation of methane (POM) over the monolithic catalyst LaNiOx/CeO2-ZrO2/alpha-Al2O3 has been studied. Experiments were conducted with one channel of a monolith at a varied channel length, contact time (similar to 1-6 ms) and temperature using the diluted gas mixture (1 % CH4 + 0.5 % O-2 in He). At increasing temperature and contact time, CO selectivity rises within the whole temperature range whereas the contact time dependence of H-2/CO ratio varies with the temperature. These results support the POM reaction scheme including primary formation of CO and H-2 followed by their oxidation in the presence of gas-phase O-2. Steam and dry methane reforming reactions occur in the part of monolithic channel where oxygen is absent, thus increasing syngas yield. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：367 / 371

页数：5

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