Effects of SiO2/Al2O3, MgO modification and hydrothermal treatment on shape-selectvity methylation of 4-methylbiphenyl with methanol over HZSM-5 zeolite catalysts

X. Guo; J. P. Shen; C. Song; X. Wang

doi:10.1016/s0167-2991(04)80482-8

Effects of SiO₂/Al₂O₃, MgO modification and hydrothermal treatment on shape-selectvity methylation of 4-methylbiphenyl with methanol over HZSM-5 zeolite catalysts

X. Guo, J. P. Shen, C. Song, X. Wang

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

The effects of SiO₂/Al₂O₃, MgO modification and hydrothermal treatment on methylation of 4-methylbiphenyl (4-MBP) into 4,4′-dimethylbiphenyl (4,4′-DMBP) with methanol over ZSM-5 under fixed-bed down-flow conditions were investigated and the results show that with an increase in the SiO₂/Al₂O₃ (from 50 to 150, molar ratio), the selectivity to 4,4′-DMBP increases from 25% to 79%. MgO modification enhances the selectivity to 4,4′-DMBP, but lowers catalyst activity and leads to the rapid deactivation. Hydrothermal treatment not only increases the selectivity, but also improves the stability. When CBV1502 (SiO₂/Al₂O₃ = 150) catalyst was hydrothermally treated at 500°C, the selectivity to 4,4′-DMBP can increase up to 85%. The selectivity to 4,4′-DMBP was further improved to about 90% by the increasing in the amount of mesitylene as solvent on the feed.

Original language	English (US)
Pages (from-to)	2247-2254
Number of pages	8
Journal	Studies in Surface Science and Catalysis
Volume	154 C
DOIs	https://doi.org/10.1016/s0167-2991(04)80482-8
State	Published - 2004

All Science Journal Classification (ASJC) codes

Catalysis
Condensed Matter Physics
Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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@article{22588b38481b48b894a81afb5b798d37,

title = "Effects of SiO2/Al2O3, MgO modification and hydrothermal treatment on shape-selectvity methylation of 4-methylbiphenyl with methanol over HZSM-5 zeolite catalysts",

abstract = "The effects of SiO2/Al2O3, MgO modification and hydrothermal treatment on methylation of 4-methylbiphenyl (4-MBP) into 4,4′-dimethylbiphenyl (4,4′-DMBP) with methanol over ZSM-5 under fixed-bed down-flow conditions were investigated and the results show that with an increase in the SiO2/Al2O3 (from 50 to 150, molar ratio), the selectivity to 4,4′-DMBP increases from 25% to 79%. MgO modification enhances the selectivity to 4,4′-DMBP, but lowers catalyst activity and leads to the rapid deactivation. Hydrothermal treatment not only increases the selectivity, but also improves the stability. When CBV1502 (SiO2/Al2O3 = 150) catalyst was hydrothermally treated at 500°C, the selectivity to 4,4′-DMBP can increase up to 85%. The selectivity to 4,4′-DMBP was further improved to about 90% by the increasing in the amount of mesitylene as solvent on the feed.",

author = "X. Guo and Shen, {J. P.} and C. Song and X. Wang",

year = "2004",

doi = "10.1016/s0167-2991(04)80482-8",

language = "English (US)",

volume = "154 C",

pages = "2247--2254",

journal = "Studies in Surface Science and Catalysis",

issn = "0167-2991",

publisher = "Elsevier Inc.",

}

TY - JOUR

T1 - Effects of SiO2/Al2O3, MgO modification and hydrothermal treatment on shape-selectvity methylation of 4-methylbiphenyl with methanol over HZSM-5 zeolite catalysts

AU - Guo, X.

AU - Shen, J. P.

AU - Song, C.

AU - Wang, X.

PY - 2004

Y1 - 2004

N2 - The effects of SiO2/Al2O3, MgO modification and hydrothermal treatment on methylation of 4-methylbiphenyl (4-MBP) into 4,4′-dimethylbiphenyl (4,4′-DMBP) with methanol over ZSM-5 under fixed-bed down-flow conditions were investigated and the results show that with an increase in the SiO2/Al2O3 (from 50 to 150, molar ratio), the selectivity to 4,4′-DMBP increases from 25% to 79%. MgO modification enhances the selectivity to 4,4′-DMBP, but lowers catalyst activity and leads to the rapid deactivation. Hydrothermal treatment not only increases the selectivity, but also improves the stability. When CBV1502 (SiO2/Al2O3 = 150) catalyst was hydrothermally treated at 500°C, the selectivity to 4,4′-DMBP can increase up to 85%. The selectivity to 4,4′-DMBP was further improved to about 90% by the increasing in the amount of mesitylene as solvent on the feed.

AB - The effects of SiO2/Al2O3, MgO modification and hydrothermal treatment on methylation of 4-methylbiphenyl (4-MBP) into 4,4′-dimethylbiphenyl (4,4′-DMBP) with methanol over ZSM-5 under fixed-bed down-flow conditions were investigated and the results show that with an increase in the SiO2/Al2O3 (from 50 to 150, molar ratio), the selectivity to 4,4′-DMBP increases from 25% to 79%. MgO modification enhances the selectivity to 4,4′-DMBP, but lowers catalyst activity and leads to the rapid deactivation. Hydrothermal treatment not only increases the selectivity, but also improves the stability. When CBV1502 (SiO2/Al2O3 = 150) catalyst was hydrothermally treated at 500°C, the selectivity to 4,4′-DMBP can increase up to 85%. The selectivity to 4,4′-DMBP was further improved to about 90% by the increasing in the amount of mesitylene as solvent on the feed.

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U2 - 10.1016/s0167-2991(04)80482-8

DO - 10.1016/s0167-2991(04)80482-8

M3 - Article

AN - SCOPUS:11844302861

SN - 0167-2991

VL - 154 C

SP - 2247

EP - 2254

JO - Studies in Surface Science and Catalysis

JF - Studies in Surface Science and Catalysis

ER -

Effects of SiO₂/Al₂O₃, MgO modification and hydrothermal treatment on shape-selectvity methylation of 4-methylbiphenyl with methanol over HZSM-5 zeolite catalysts

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