Methylation of 2-methylnaphthalene with methanol over NH4F and Pt modified HZSM-5 catalysts

Liang Zhao; Xinwen Guo; Min Liu; Xiangsheng Wang; Chunshan Song

doi:10.1016/S1004-9541(09)60123-3

Methylation of 2-methylnaphthalene with methanol over NH₄F and Pt modified HZSM-5 catalysts

Liang Zhao, Xinwen Guo, Min Liu, Xiangsheng Wang, Chunshan Song

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8 Scopus citations

Abstract

Shape-selective methylation of 2-methylnaphthalene (2-MN) was carried out over NH₄F and Pt modified HZSM-5 (SiO₂/Al ₂O₃ = 83) catalysts in a fixed-bed down-flow reactor using methanol as methylating agent and 1,3,5-trimethylbenzene (1,3,5-TMB) as a solvent. Pt promoted HZSM-5 catalysts showed low concentration of coke-like polycondensed aromatics, NH₄F modification decreased non-shape-selective acid sites. After Pt and NH₄F co-modification, both conversion of 2-MN and selectivity to 2,6-DMN were improved. 6NH ₄F/0.5Pt/HZSM-5 catalyst exhibited 13.8 of 2-MN conversion with 6.2 of 2,6-DMN yield after 7 h time on stream (TOS), and 2,6-/2,7-DMN ratio of 1.7 after 10 h of TOS.

Original language	English (US)
Pages (from-to)	742-749
Number of pages	8
Journal	Chinese Journal of Chemical Engineering
Volume	18
Issue number	5
DOIs	https://doi.org/10.1016/S1004-9541(09)60123-3
State	Published - Oct 1 2010

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All Science Journal Classification (ASJC) codes

Environmental Engineering
Biochemistry
Chemistry(all)
Chemical Engineering(all)

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Zhao, L., Guo, X., Liu, M., Wang, X., & Song, C. (2010). Methylation of 2-methylnaphthalene with methanol over NH₄F and Pt modified HZSM-5 catalysts. Chinese Journal of Chemical Engineering, 18(5), 742-749. https://doi.org/10.1016/S1004-9541(09)60123-3

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title = "Methylation of 2-methylnaphthalene with methanol over NH4F and Pt modified HZSM-5 catalysts",

abstract = "Shape-selective methylation of 2-methylnaphthalene (2-MN) was carried out over NH4F and Pt modified HZSM-5 (SiO2/Al 2O3 = 83) catalysts in a fixed-bed down-flow reactor using methanol as methylating agent and 1,3,5-trimethylbenzene (1,3,5-TMB) as a solvent. Pt promoted HZSM-5 catalysts showed low concentration of coke-like polycondensed aromatics, NH4F modification decreased non-shape-selective acid sites. After Pt and NH4F co-modification, both conversion of 2-MN and selectivity to 2,6-DMN were improved. 6NH 4F/0.5Pt/HZSM-5 catalyst exhibited 13.8 of 2-MN conversion with 6.2 of 2,6-DMN yield after 7 h time on stream (TOS), and 2,6-/2,7-DMN ratio of 1.7 after 10 h of TOS.",

author = "Liang Zhao and Xinwen Guo and Min Liu and Xiangsheng Wang and Chunshan Song",

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T1 - Methylation of 2-methylnaphthalene with methanol over NH4F and Pt modified HZSM-5 catalysts

AU - Zhao, Liang

AU - Guo, Xinwen

AU - Liu, Min

AU - Wang, Xiangsheng

AU - Song, Chunshan

PY - 2010/10/1

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N2 - Shape-selective methylation of 2-methylnaphthalene (2-MN) was carried out over NH4F and Pt modified HZSM-5 (SiO2/Al 2O3 = 83) catalysts in a fixed-bed down-flow reactor using methanol as methylating agent and 1,3,5-trimethylbenzene (1,3,5-TMB) as a solvent. Pt promoted HZSM-5 catalysts showed low concentration of coke-like polycondensed aromatics, NH4F modification decreased non-shape-selective acid sites. After Pt and NH4F co-modification, both conversion of 2-MN and selectivity to 2,6-DMN were improved. 6NH 4F/0.5Pt/HZSM-5 catalyst exhibited 13.8 of 2-MN conversion with 6.2 of 2,6-DMN yield after 7 h time on stream (TOS), and 2,6-/2,7-DMN ratio of 1.7 after 10 h of TOS.

AB - Shape-selective methylation of 2-methylnaphthalene (2-MN) was carried out over NH4F and Pt modified HZSM-5 (SiO2/Al 2O3 = 83) catalysts in a fixed-bed down-flow reactor using methanol as methylating agent and 1,3,5-trimethylbenzene (1,3,5-TMB) as a solvent. Pt promoted HZSM-5 catalysts showed low concentration of coke-like polycondensed aromatics, NH4F modification decreased non-shape-selective acid sites. After Pt and NH4F co-modification, both conversion of 2-MN and selectivity to 2,6-DMN were improved. 6NH 4F/0.5Pt/HZSM-5 catalyst exhibited 13.8 of 2-MN conversion with 6.2 of 2,6-DMN yield after 7 h time on stream (TOS), and 2,6-/2,7-DMN ratio of 1.7 after 10 h of TOS.

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10.1016/S1004-9541(09)60123-3