Abstract
The effects of catalyst activation and the reaction conditions on the methylation of 4-methylbiphenyl (4-MBP) with methanol over MgO/CBV8020 were investigated. With an increase in the reaction temperature, the conversion of 4-MBP decreased and the selectivity to 4,4′-dimethylbiphenyl (4,4′-DMBP) first increased, then decreased. With an increase in the reaction temperature, the isomerization of 4-MBP into 3-MBP increased, as well as the isomerization of 4,4′-DMBP into 2,3′- and 3,4′-DMBP. The effect of reaction time on the methylation of 4-MBP with methanol showed that both the conversion of 4-MBP and the selectivity to 4,4′-DMBP decreased with reaction time. Moreover, the addition of water in the feed did not favor methylation of 4-MBP with methanol. With an increase in the amount of mesitylene, both the selectivity to 4,4′-DMBP and 4-MBP conversion increased a little. However, the activity stability improved a lot, after 375 min reaction, the selectivity to 4,4′-DMBP was ∼ 80%, and 4-MBP conversion was ∼ 8%.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 902-903 |
| Number of pages | 2 |
| Journal | ACS Division of Fuel Chemistry, Preprints |
| Volume | 48 |
| Issue number | 2 |
| State | Published - Sep 1 2003 |
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All Science Journal Classification (ASJC) codes
- Energy(all)
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Shape selective methylation of 4-methylbiphenyl with methanol over MgO/HZSM5. / Guo, Xinwen; Shen, Jian Ping; Sun, Lu; Song, Chunshan; Wang, Xiangsheng.
In: ACS Division of Fuel Chemistry, Preprints, Vol. 48, No. 2, 01.09.2003, p. 902-903.Research output: Contribution to journal › Conference article
TY - JOUR
T1 - Shape selective methylation of 4-methylbiphenyl with methanol over MgO/HZSM5
AU - Guo, Xinwen
AU - Shen, Jian Ping
AU - Sun, Lu
AU - Song, Chunshan
AU - Wang, Xiangsheng
PY - 2003/9/1
Y1 - 2003/9/1
N2 - The effects of catalyst activation and the reaction conditions on the methylation of 4-methylbiphenyl (4-MBP) with methanol over MgO/CBV8020 were investigated. With an increase in the reaction temperature, the conversion of 4-MBP decreased and the selectivity to 4,4′-dimethylbiphenyl (4,4′-DMBP) first increased, then decreased. With an increase in the reaction temperature, the isomerization of 4-MBP into 3-MBP increased, as well as the isomerization of 4,4′-DMBP into 2,3′- and 3,4′-DMBP. The effect of reaction time on the methylation of 4-MBP with methanol showed that both the conversion of 4-MBP and the selectivity to 4,4′-DMBP decreased with reaction time. Moreover, the addition of water in the feed did not favor methylation of 4-MBP with methanol. With an increase in the amount of mesitylene, both the selectivity to 4,4′-DMBP and 4-MBP conversion increased a little. However, the activity stability improved a lot, after 375 min reaction, the selectivity to 4,4′-DMBP was ∼ 80%, and 4-MBP conversion was ∼ 8%.
AB - The effects of catalyst activation and the reaction conditions on the methylation of 4-methylbiphenyl (4-MBP) with methanol over MgO/CBV8020 were investigated. With an increase in the reaction temperature, the conversion of 4-MBP decreased and the selectivity to 4,4′-dimethylbiphenyl (4,4′-DMBP) first increased, then decreased. With an increase in the reaction temperature, the isomerization of 4-MBP into 3-MBP increased, as well as the isomerization of 4,4′-DMBP into 2,3′- and 3,4′-DMBP. The effect of reaction time on the methylation of 4-MBP with methanol showed that both the conversion of 4-MBP and the selectivity to 4,4′-DMBP decreased with reaction time. Moreover, the addition of water in the feed did not favor methylation of 4-MBP with methanol. With an increase in the amount of mesitylene, both the selectivity to 4,4′-DMBP and 4-MBP conversion increased a little. However, the activity stability improved a lot, after 375 min reaction, the selectivity to 4,4′-DMBP was ∼ 80%, and 4-MBP conversion was ∼ 8%.
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M3 - Conference article
AN - SCOPUS:1042289954
VL - 48
SP - 902
EP - 903
JO - Am Chem Soc Div Fuel Chem Prepr
JF - Am Chem Soc Div Fuel Chem Prepr
SN - 0569-3772
IS - 2
ER -