Investigation on the Performance of Supported Molybdenum Carbide for the Partial Oxidation of Methane

Quanli Zhu; Jian Yang; Jiaxin Wang; Shengfu Ji; Hanqing Wang

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Investigation on the Performance of Supported Molybdenum Carbide for the Partial Oxidation of Methane

机译：负载碳化钼对甲烷部分氧化性能的研究

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The performance of supported and unsupported molybdenum carbide for the partial oxida-tion of methane (POM) to syngas was investigated. An evaluation of the catalysts indicates that bulkmolybdenum carbide has a higher methane conversion during the initial stage but a lower selectivity toCO and H2/CO ratio in the products. The rapid deactivation of the catalyst is also a significant problem.However, the supported molybdenum carbide catalyst shows a much higher methane conversion, increasedselectivity and significantly improved catalytic stability. The characterization by XRD and BET specificarea measurements depict an improved dispersion of molybdenum carbide when using alumina as a carrier.The bulk or the supported molybdenum carbide exists in the β-Mo2C phase, while it is transformed intomolybdenum dioxide postcatalysis which is an important cause of molybdenum carbide deactivation.

机译：研究了负载型和非负载型碳化钼对甲烷（POM）部分氧化为合成气的性能。对催化剂的评估表明，块状碳化钼在初始阶段具有较高的甲烷转化率，但产物中对CO和H2 / CO的选择性较低。催化剂的快速失活也是一个重大问题。但是，负载型碳化钼催化剂显示出更高的甲烷转化率，更高的选择性和显着改善的催化稳定性。通过XRD和BET比表面积测量的表征表明，使用氧化铝作为载体时碳化钼的分散性得到了改善。大块或负载的碳化钼存在于β-Mo2C相中，而后催化转化为二氧化钼，这是造成该现象的重要原因碳化钼失活。

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《天然气化学（英文版）》 |2003年第1期|23-30|共8页
作者
Quanli Zhu; Jian Yang; Jiaxin Wang; Shengfu Ji; Hanqing Wang;
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作者单位

State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China;

State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China;

State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China;

State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China;

State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China;

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正文语种 chi
中图分类化学;
关键词
molybdenum carbide; molybdenum oxide; partial oxidation of methane; syngas; deactivation;

机译：碳化钼;氧化钼;甲烷部分氧化;合成气;失活;

Investigation on the Performance of Supported Molybdenum Carbide for the Partial Oxidation of Methane

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