TY - JOUR
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
N1 - Funding Information:
Received 2009-12-07, accepted 2010-07-07. * Supported by the Program for New Century Excellent Talents in University (NCET-04-0268) and the Expertise-Introduction Project for Disciplinary Innovation of Universities. ** To whom correspondence should be addressed. E-mail: guoxw@dlut.edu.cn; csong@psu.edu
PY - 2010/10
Y1 - 2010/10
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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U2 - 10.1016/S1004-9541(09)60123-3
DO - 10.1016/S1004-9541(09)60123-3
M3 - Article
AN - SCOPUS:78049462922
VL - 18
SP - 742
EP - 749
JO - Chinese Journal of Chemical Engineering
JF - Chinese Journal of Chemical Engineering
SN - 1004-9541
IS - 5
ER -