期刊
JOURNAL OF NATURAL GAS CHEMISTRY
卷 20, 期 3, 页码 243-248出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S1003-9953(10)60181-8
关键词
methane conversion; HZSM-5 catalyst; rare earth promoted
资金
- National Natural Science Foundation of China [20273021]
- Shanghai Science and Technology Committee [05JC14070, 06DZ05025, 0552nm042, 08JC1408600]
- Scientific Research Foundation of the Education Department of Heilongjiang Province [11544005]
At low temperature of 723 K, methane can be easily activated in the presence of ethylene in the feed, and converted to higher hydrocarbons (C(2)-C(4)) and aromatics (C(6)-C(10)), through its reaction over rare metals modified Zn/HZSM-5 zeolite catalysts without undesirable carbon oxides formation. Methane can get 37.3% conversion over the above catalysts under low temperature, and the catalysts show a longer lifetime than usual metal supported HZSM-5 zeolite catalysts without adding any rare earth metals. The effects of methane activation over various rare earth metal promoted Zn/HZSM-5 catalysts on the products and influences of several reaction conditions such as temperature, catalyst lifetime and molar ratio of CH(4)/C(2)H(4) have been discussed.
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