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Liquefied petroleum gas aromatization to high octane gasoline over ZSM-5 zeolite catalyst at low temperature
Song, YQ; Xu, LY; Xie, SJ; Wu, ZH; Wang, QX
KeywordZsm-5 Zeolite Liquefied Petroleum Gas Aromatization Gasoline Hydrothermal Treatment
Source PublicationCHINESE JOURNAL OF CATALYSIS
2004-03-01
Volume25Issue:3Pages:199-204
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
WOS Research AreaChemistry ; Engineering
WOS KeywordLIGHT-HYDROCARBONS
AbstractThe effects of reaction temperature, space velocity, pressure and hydrothermal treatment of the catalyst on the aromatization of liquefied petroleum gas (LPG) to high octane gasoline over ZSM-5 zeolite catalyst at low temperature were investigated. The catalyst exhibited high activity for aromatization when the reaction temperature was higher than 335 degreesC, and showed high ability for olefin oligomerization when the temperature was lower than 300 degreesC. Moreover, the selectivity for benzene, toluene and C10+ aromatics increased with the reaction temperature. With the increase of the space velocity from 2 to 20 h(-1), the selectivity for aromatics decreased from 62.1% to 12.3%. However, the selectivity for paraxylene increased even beyond the thermodynamic equilibrium, which is probably attributed to the shape selectivity caused by the quick coking in the channel of ZSM-5 zeolite. In addition, the presence of hydrogen in the reaction system is favorable for coking prohibition during the reaction and thus improved the catalyst stability. It was also found that the hydrothermal treatment of the ZSM-5 zeolite catalyst at a proper temperature changed the acidity distribution of the ZSM-5 catalyst and therefore the catalyst stability was enhanced.
Language英语
WOS IDWOS:000220700100009
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/139287
Collection中国科学院大连化学物理研究所
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
Recommended Citation
GB/T 7714
Song, YQ,Xu, LY,Xie, SJ,et al. Liquefied petroleum gas aromatization to high octane gasoline over ZSM-5 zeolite catalyst at low temperature[J]. CHINESE JOURNAL OF CATALYSIS,2004,25(3):199-204.
APA Song, YQ,Xu, LY,Xie, SJ,Wu, ZH,&Wang, QX.(2004).Liquefied petroleum gas aromatization to high octane gasoline over ZSM-5 zeolite catalyst at low temperature.CHINESE JOURNAL OF CATALYSIS,25(3),199-204.
MLA Song, YQ,et al."Liquefied petroleum gas aromatization to high octane gasoline over ZSM-5 zeolite catalyst at low temperature".CHINESE JOURNAL OF CATALYSIS 25.3(2004):199-204.
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