Effects of Si/Al ratio and Pt loading on Pt/SAPO-11 catalysts in hydroconversion of Jatropha oil

被引：87
作者：
Chen, Ning [1 ]
Gong, Shaofeng [1 ]
Shirai, Hisakazu [1 ]
Watanabe, Toshitaka [1 ]
Qian, Elko W. [1 ]
机构：
[1] Tokyo Univ Agr & Technol, Grad Sch Bioapplicat & Syst Engn, Koganei, Tokyo 184, Japan
来源：
APPLIED CATALYSIS A-GENERAL | 2013年 / 466卷
关键词：
SAPO-11; Si/Al ratio; Pt loading; Jatropha oil hydroconversion; Methyl oleate; VEGETABLE-OILS; N-ALKANES; BIODIESEL SYNTHESIS; RENEWABLE DIESEL; SI DISTRIBUTION; SUNFLOWER OIL; HYDROISOMERIZATION; ISOMERIZATION; SAPO-11; ALUMINA;
D O I：
10.1016/j.apcata.2013.06.034
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A series of Pt/SAPO-11 catalysts were prepared with various Si/Al ratios and Pt loadings and characterized by using BET, XRD, XRF, and CO pulse adsorption, as well as 29Si NMR and NH3-TPD techniques. Their catalytic performances in hydroconversion of Jatropha oil were tested with a fixed-bed flow reactor system. The isomerization activity increased with the Si/Al ratio because there were more medium acidic sites on the SAPO-11 supports. Pt/SAPO-11 catalysts with a Si/Al ratio of 0.4 demonstrated high activity for both deoxygenation and isomerization among catalysts with the same Pt loading. The deoxygenation, isomerization and cracking activities strongly depended on the Pt loading. The best activity was observed for the sample with a 3 wt% Pt loading, which generated an 83% yield of iso-C15-18 hydrocarbons under the LHSV of 0.5 h(-1). Based on the mechanistic study of hydroconversion of methyl oleate, a reaction network for the hydroconversion of Jatropha oil was suggested. (C) 2013 Elsevier B.V. All rights reserved.
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页码：105 / 115
页数：11
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