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Effect of Co additive on the formation of carbon deposit on Mo/MCM-22 catalyst for methane dehydro-aromatization
Liu, HM; Shen, WJ; Bao, XH; Xu, YD
关键词Cobalt Molybdenum Mcm-22 Zeolite Methane Dehydro-aromatization Carbon Deposit
刊名CHINESE JOURNAL OF CATALYSIS
2004-06-01
25期:6页:495-500
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]NONOXIDATIVE CONDITIONS ; MO/HZSM-5 CATALYST ; INDUCTION PERIOD ; CONVERSION ; BENZENE ; ABSENCE
英文摘要Methane dehydro-aromatization (MDA) under non-oxidative conditions was carried out over the Mo/ MCM-22 catalyst modified by Co additive, and the results suggested that the addition of Co dramatically improved the activity and stability of Mo/MCM-22. Moreover, the chemical nature and physical properties of the carbon deposit formed on Mo/MCM-22 and Co-Mo/MCM-22 catalysts were studied by temperature-programmed reaction with hydrogen (TPH) and temperature-programmed reaction with CO2 (TPCO2) combining with thermal gravimetric analysis (TGA). The results showed that there were two kinds of carbon deposit formed on the surface of the catalysts during MDA. TPH experiment only had effect on the carbon deposit burnt-off at high temperature. However, TPCO2 experiment could result in diminishing of the carbon deposit burnt-off at both low temperature and high temperature. The formation of the two kinds of carbon deposit was distinctly suppressed on the Co-modified Mo/MCM-22 catalyst, which directly led to the obvious increase of the stability of the Mo/MCM-22 catalyst in MDA.
语种英语
WOS记录号WOS:000222531200016
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/139335
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
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GB/T 7714
Liu, HM,Shen, WJ,Bao, XH,et al. Effect of Co additive on the formation of carbon deposit on Mo/MCM-22 catalyst for methane dehydro-aromatization[J]. CHINESE JOURNAL OF CATALYSIS,2004,25(6):495-500.
APA Liu, HM,Shen, WJ,Bao, XH,&Xu, YD.(2004).Effect of Co additive on the formation of carbon deposit on Mo/MCM-22 catalyst for methane dehydro-aromatization.CHINESE JOURNAL OF CATALYSIS,25(6),495-500.
MLA Liu, HM,et al."Effect of Co additive on the formation of carbon deposit on Mo/MCM-22 catalyst for methane dehydro-aromatization".CHINESE JOURNAL OF CATALYSIS 25.6(2004):495-500.
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