Shape Selectivity of HZSM-5 in Disproportionation of β-Methylnaphthalene

Chem. J. Chinese Universities ›› 1993, Vol. 14 ›› Issue (6): 845.

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Shape Selectivity of HZSM-5 in Disproportionation of β-Methylnaphthalene

SHEN Jian-Ping¹, MA Jun¹, JIANG Da-Zhen¹, MIN En-Ze²

1. Department of Chemistry, Jilin University, Changchun, 130023;
2. Research Institute of Petroleum Processing, Beijmg

Received:1992-08-28 Revised:1992-12-25 Online:1993-06-24 Published:1993-06-24

Abstract

Abstract: The disproportionation of β-methylnaphthalene(β-MN) was carried out over HZSM-5 catalysts.The external acid sites were eliminated by modification with P(C₆H₅)₃ and Si(Ph₂)Cl₂.The dis-proportionation and isomerization of β-MNoccur on different positions of the catalyst, the dispropor-tionation proceeds in the pore of HZSM-5 and yields 2,6-DMNselectively, whereas isomerization only proceeds on the external surface.The secondary reaction of DMNon the surface of HZSM-5 and isomerization are reduced by elimination of the external surface acid sites.

Key words: β-Methylnaphthalene, HZSM-5, Disproportionation, Isomerization

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SHEN Jian-Ping, MA Jun, JIANG Da-Zhen, MIN En-Ze. Shape Selectivity of HZSM-5 in Disproportionation of β-Methylnaphthalene[J]. Chem. J. Chinese Universities, 1993, 14(6): 845.

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Shape Selectivity of HZSM-5 in Disproportionation of β-Methylnaphthalene

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