Design of improved hydrocracking catalysts by increasing the proximity between acid and metallic sites

被引：105
作者：
Francis, J. [1 ]
Guillon, E. [1 ]
Bats, N. [1 ]
Pichon, C. [1 ]
Corma, A. [2 ]
Simon, L. J. [1 ]
机构：
[1] IFP Energies Nouvelles, F-69360 Solaize, France
[2] Univ Politecn Valencia, Inst Tecnol Quim CSIC UPV, Valencia 46022, Spain
来源：
APPLIED CATALYSIS A-GENERAL | 2011年 / 409卷
关键词：
Hydrocracking; Squalane; Zeolite; Nickel; Metal sulfide; Proximity; NIW/USY ZEOLITE CATALYSTS; VACUUM GAS-OIL; Y-ZEOLITE; SUPPORT ACIDITY; NIMO PHASES; SULFIDED NI; HYDROISOMERIZATION; HYDROGENATION; CRYSTALLITES; PYRIDINE;
D O I：
10.1016/j.apcata.2011.09.040
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 new approach was undertaken to increase the bifunctionality of USY zeolite based catalyst. Nickel metallic phase was first impregnated onto USY zeolite and composite catalysts NiMo/[gamma-Al2O3+ (Ni)/USY] were prepared from these zeolites. Catalytic properties in toluene hydrogenation and squalane (2,6,10,15,19,23-hexamethyltetracosane) hydrocracking (HCK) were investigated. Enhanced conversion and middle distillate (MD) selectivity was obtained for catalysts on which nickel has been impregnated on the zeolite powder. These enhancements are ascribed to an increased proximity between the hydrogenation/dehydrogenation (H/DH) function and the acid sites resulting in a more efficient synergy between these two functions. (C) 2011 Elsevier B.V. All rights reserved.
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收藏
页码：140 / 147
页数：8
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