NDLI: Light Alkenes Preparation by the Gas Phase Oxidative Cracking or Catalytic Oxidative Cracking of High Hydrocarbons

Content Provider	Springer Nature Link
Author	Liu, Xuebin Li, Wenzhao Zhu, Haiou Ge, Qingjie Chen, Yanxin Xu, Hengyong
Copyright Year	2004
Abstract	The preparation of light alkenes by the gas phase oxidative cracking (GOC) or catalytic oxidative cracking (COC) of model high hydrocarbons (hexane, cyclohexane, isooctane and decane in the GOC process and hexane in the COC process) was investigated in this paper. The selection for the feed in the GOC process was flexible. Excellent conversion of hydrocarbons (over 85%) and high yield of light alkenes (about 50%) were obtained in the GOC of various hydrocarbons including cyclohexane at 750°C. In the GOC process, the utilization ratio of the carbon resources was high; CO dominated the produced CO X (the selectivity to CO2 was always below 1%); and the total selectivity to light alkenes and CO was near or over 70%. In the COC of hexane over three typical catalysts (HZSM-5, 10% La2O3/HZSM-5 and 0.25% Li/MgO), the selectivity to CO X was hard to decrease and the conversion of hexane and yield of light alkenes could not compete with those in the GOC process. With the addition of H2 in the feed, the selectivity to CO X was reduced below 5% over 0.1% Pt/HZSM-5 or 0.1% Pt/MgAl2O4 catalyst. The latter catalyst was superior to the former catalyst due to its perfect performance at high temperature, and with the latter, excellent selectivity to light alkenes (70%) and the conversion of hexane (92%) were achieved at 850°C (a yield of light alkenes of 64%, correspondingly).
Starting Page	31
Ending Page	36
Page Count	6
File Format	PDF
ISSN	1011372X
Journal	Catalysis Letters
Volume Number	94
Issue Number	1-2
e-ISSN	1572879X
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2004-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Physical Chemistry Industrial Chemistry/Chemical Engineering Pharmacy
Content Type	Text
Resource Type	Article
Subject	Chemistry Catalysis

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