期刊
FUEL
卷 90, 期 11, 页码 3468-3472出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2011.06.046
关键词
Sorbitol; Isoparaffin; Ni catalyst; Calcination; Aqueous phase process
资金
- National Natural Science Foundation of China [51076157]
- National 863 Plan [2010AA101606]
- Chinese Academy of Sciences [KSCX2-YW-G-063]
Ni/HZSM-5 catalysts calcined at different temperatures were used in the isoparaffin production by aqueous phase processing of sorbitol and characterized by N-2 physical adsorption, temperature-programmed reduction (H-2-TPR), temperature-programmed desorption of ammonia (NH3-TPD) and Raman techniques. The effect of calcination temperature of the catalysts on the catalytic performance for the reaction was investigated. The activity test results indicated that the maximal i-C6H14 selectivity of 45.4% and the total i-C6H14 and i-C5H12 yield of 32.3% were obtained over the catalyst calcined at 500 degrees C, which exhibited the optimum surface area and pore structure with 100% of the reducibility of Ni species on the surface of HZSM-5. In addition, the amount and the strength distribution of acidic surface sites of the catalyst decreased with the increase of calcination temperature at 500 degrees C above. All these factors result in an increase in the formation of isoparaffin. (C) 2011 Elsevier Ltd. All rights reserved.
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