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CATALYTIC CRACKING OF ALKANES ON MCM-22 ZEOLITE - COMPARISON WITH ZSM-5 AND BETA-ZEOLITE AND ITS POSSIBILITY AS AN FCC CRACKING ADDITIVE
被引:80
作者:
CORMA, A
[1
]
GONZALEZALFARO, V
[1
]
ORCHILLES, AV
[1
]
机构:
[1] UNIV VALENCIA, DEPT INGN QUIM, E-46100 BURJASSOT, SPAIN
关键词:
ALKANE CRACKING;
FCC;
MCM-22;
ZEOLITES;
D O I:
10.1016/0926-860X(95)00081-X
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:
N-heptane cracking has been carried out on MCM-22, and its kinetic and decay behaviour is compared with that of ZSM-5 and Beta zeolites. In the case of MCM-22 cracking occurs in the 10-member ring channel system, as well as in the large cavities formed by 12-member rings. Product selectivities show that MCM-22, while presenting features which indicate structural similarities with ZSM-5, it also presents characteristics corresponding to pores or cavities larger than ZSM-5. The selectivities to the individual products together with C-1 + C-2/iC(4), C-3/C-4, C-5/C-2, iC(4)/total C-4, and alkane/alkene ratios indicate that MCM-22 has good properties to be used as an FCC octane booster additive specially valuable for the production of reformulated gasolines.
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页码:203 / 215
页数:13
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