Comparison of Pt/zeolite catalysts for n-hexadecane hydroisomerization

被引：250
|
作者：
Park, KC [1 ]
Ihm, SK [1 ]
机构：
[1] Korea Adv Inst Sci & Technol, Dept Chem Engn, Yusong Gu, Taejon 305701, South Korea
来源：
APPLIED CATALYSIS A-GENERAL | 2000年 / 203卷 / 02期
关键词：
platinum catalyst (supported); hydroisomerization; Pt/zeolite; n-hexadecane;
D O I：
10.1016/S0926-860X(00)00490-7
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：
Bifunctional platinum (0.5 wt.%) catalysts containing ZSM-5, ZSM-22, SAPO-11, Al-MCM-41, H-Y and H-P were tested for the hydroisomerization of n-hexadecane and their catalytic activities were compared. The Pt/ZSM-5, Pt/ZSM-22 and Pt/H-beta catalysts showed higher hydrocracking activity due to their strong acid sites,while the Pt/SAPO-11, Pt/Al-MCM-41 and Pt/H-Y catalysts with moderate acid strength showed better isomerization selectivity. Especially the Pt/Al-MCM-41 catalyst, where Al-MCM-41 was prepared by post-synthetic metal implantation method from siliceous MCM-41, showed the highest isomerization selectivity as well as the highest yield of multibranched isohexadecanes, presumably not only due to its moderately weak acidity and mesoscale pores but also due to higher metal dispersion. This result indicates that the Pt/Al-MCM-41 catalyst can be a promising candidate for good dewaxing catalysts. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：201 / 209
页数：9
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