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Preparation of K-Co-Mo-C catalyst and its catalytic performance for mixed alcohol synthesis
Li, CL; He, YL; Liu, ZM
关键词Potassium Cobalt Molybdenum Carbon Syngas Mixed Alcohol
刊名CHINESE JOURNAL OF CATALYSIS
2006-05-01
27期:5页:409-415
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]MOLYBDENUM ; CO-H2
英文摘要A K-Co-Mo-C catalyst with remnant carbon was prepared by the sol-gel method. The carbon content was adjusted by adding different amounts of carbon precursor. Catalytic behavior of mixed alcohols synthesis from syngas was investigated over the catalysts. By combining different characterization techniques, such as X-ray diffraction, thermo-gravimetric analysis, N-2 adsorption isotherms method, and temperature-programmed desorption of hydrogen, it was revealed that the presence of appropriate content of remnant carbon increased the dispersion of active phase and improved the yield and selectivity for alcohol. For the catalysts with superfluous remnant carbon, the selectivity for alcohol decreased and the selectivity for hydrocarbon increased, which might be due to the fact that with the increase of amount of carbon precursors, Mo species was readily reduced to the metallic state. For the sample calcined in air, the metal oxide precursors were easily aggregated to irreducible compound, so the activity for alcohol synthesis was low. The sample with 2.8% carbon had the largest surface area and pore volume, and showed the highest activity for alcohol synthesis. Calcining sample at higher temperature in inert atmosphere also caused the activity for alcohol synthesis to decrease obviously, but the selectivity for C-2 divided by alcohols increased markedly.
语种英语
WOS记录号WOS:000238200000010
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被引频次:1[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/321008/140340
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, Lab Nat Gas Utilizat & Appl Catalysis, Dalian 116023, Liaoning, Peoples R China
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GB/T 7714
Li, CL,He, YL,Liu, ZM. Preparation of K-Co-Mo-C catalyst and its catalytic performance for mixed alcohol synthesis[J]. CHINESE JOURNAL OF CATALYSIS,2006,27(5):409-415.
APA Li, CL,He, YL,&Liu, ZM.(2006).Preparation of K-Co-Mo-C catalyst and its catalytic performance for mixed alcohol synthesis.CHINESE JOURNAL OF CATALYSIS,27(5),409-415.
MLA Li, CL,et al."Preparation of K-Co-Mo-C catalyst and its catalytic performance for mixed alcohol synthesis".CHINESE JOURNAL OF CATALYSIS 27.5(2006):409-415.
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