Physical and chemical properties of micro-mesoporous catalysts with tetrapropylammonium hydroxide treatment and their performance in thiophene alkylation

LIU Dong-mei; WANG Hai-yan; KONG Fei-fei; MAO Yan-hong; WANG Kun

Volume 44 Issue 11

Nov. 2016

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LIU Dong-mei, WANG Hai-yan, KONG Fei-fei, MAO Yan-hong, WANG Kun. Physical and chemical properties of micro-mesoporous catalysts with tetrapropylammonium hydroxide treatment and their performance in thiophene alkylation[J]. Journal of Fuel Chemistry and Technology, 2016, 44(11): 1370-1379.

Citation:

LIU Dong-mei, WANG Hai-yan, KONG Fei-fei, MAO Yan-hong, WANG Kun. Physical and chemical properties of micro-mesoporous catalysts with tetrapropylammonium hydroxide treatment and their performance in thiophene alkylation[J]. Journal of Fuel Chemistry and Technology, 2016, 44(11): 1370-1379.

Citation:

LIU Dong-mei, WANG Hai-yan, KONG Fei-fei, MAO Yan-hong, WANG Kun. Physical and chemical properties of micro-mesoporous catalysts with tetrapropylammonium hydroxide treatment and their performance in thiophene alkylation[J]. Journal of Fuel Chemistry and Technology, 2016, 44(11): 1370-1379.

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Physical and chemical properties of micro-mesoporous catalysts with tetrapropylammonium hydroxide treatment and their performance in thiophene alkylation

1.
School of Petrochemical Engineering, Liaoning Shihua University, Fushun 113001, China
2.
China Petroleum Fushun Petrochemical Company, Fushun 113006, China

Funds:

the National Natural Science Foundation of Liaoning 201202126

Received Date: 2016-03-21
Rev Recd Date: 2016-07-11

Available Online: 2021-01-23

Publish Date: 2016-11-10

Abstract

Abstract

HZSM-5 zeolites with different molar ratios of SiO₂/Al₂O₃ were treated by different concentrations of tetrapropylammonium hydroxide (TPAOH) solution. HZSM-5 zeolites with micro-meso pores were synthesized. The results show that the treatment of HZSM-5 zeolite with different molar ratios of SiO₂/Al₂O₃ by different concentrations of TPAOH could cause desilication. The pore diameter of mesopores increases with the increase of TPAOH concentration and SiO₂/Al₂O₃ molar ratios. Meanwhile, the acidic properties were adjusted. HZSM-5 zeolites were treated by different concentrations of TPAOH solution, whose SiO₂/Al₂O₃ molar ratios are 50, 80 and 150. HZSM-5 with SiO₂/Al₂O₃ molar ratio of 50 is obviously better than others in the content of relative acid, L-acid, B-acid and the strength of weak acid. HZSM-5 (SiO₂/Al₂O₃ molar ratios is 50) by the treatment of TPAOH in different contents is most preferable for thiophene alkylation.
- alkali treatment,
- tetrapropylammonium hydroxide,
- micro-and mesoporous,
- ZSM-5,
- alkylation

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References(38)

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