Modification of HZSM-5 by metal surfactant for aromatization
Hu, ZS; Shi, YG; Luang, CH; Chen, SY; Dong, JX; Lu, XD; Peng, SY
AbstractZinc valerate and magnesium valerate were used to modify HZSM-5 for aromatization of methylcyclohexane. Before and after the modification the pore structure and surface area of the zeolite were characterized and ammonia TPD measurement was carried out. Methylcyclohexane aromatization reaction over the zeolite was evaluated using a pulse quartz minireactor. The results indicated that both the conversion and the aromatic selectivity were increased by zinc valerate modification but were decreased by magnesium valerate. The latter modification also caused increases in C1-C4 hydrocarbon selectivity and in its yield. The former modification resulted in an improvement in shape selectivity of the zeolite. There existed an optimal zinc ion ratio of external surface/internal surface of the zeolite for aromatization and the ratio could be obtained by a combination of zinc valerate modification and zinc ion exchange. Metal surfactant modification can be used to study the external and internal surfaces of a zeolite separately. (C) 1998 Elsevier Science B.V. All rights reserved.
KeywordZsm-5 Zeolite Modification Metal Surfactant Zinc Methylcyclohexane Aromatization
Indexed BySCI
WOS IDWOS:000077389600022
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Document Type期刊论文
Corresponding AuthorHu, ZS
Affiliation1.Logist Engn Coll, Chongqing 400042, Peoples R China
2.Chinese Acad Sci, Inst Chem, State Key Lab Coal Convers, Shanxi 030001, Peoples R China
Recommended Citation
GB/T 7714
Hu, ZS,Shi, YG,Luang, CH,et al. Modification of HZSM-5 by metal surfactant for aromatization[J]. MICROPOROUS AND MESOPOROUS MATERIALS,1998,25(1-3):201-206.
APA Hu, ZS.,Shi, YG.,Luang, CH.,Chen, SY.,Dong, JX.,...&Peng, SY.(1998).Modification of HZSM-5 by metal surfactant for aromatization.MICROPOROUS AND MESOPOROUS MATERIALS,25(1-3),201-206.
MLA Hu, ZS,et al."Modification of HZSM-5 by metal surfactant for aromatization".MICROPOROUS AND MESOPOROUS MATERIALS 25.1-3(1998):201-206.
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