Citation: WANG Jun-feng, SHEN Jian, LI Jian. Preparation of Mg/Ce-SBA-15 catalyst and its performance on phenol alkylation with methanol[J]. Journal of Fuel Chemistry and Technology, ;2017, 45(5): 633-640. shu

Preparation of Mg/Ce-SBA-15 catalyst and its performance on phenol alkylation with methanol

College of Petrochemical Engineering, Liaoning Shihua University, Fushun 113001, China

Corresponding author: LI Jian, jlqdsd@163.com
Received Date: 20 December 2016
Revised Date: 13 March 2017

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Mg/Ce-SBA-15 mesoporous molecular sieves were synthesized by using Ce-SBA-15 as support and magnesium nitrate as precursor through impregnation method. The samples were characterized by XRD, N₂ adsorption-desorption, BET, SEM, NH₃-TPD, Py-FTIR and TG-DTA techniques. The results indicate that the original crystal structures of SBA-15 remain unchanged after modification with Mg, but the number of weak acids were increased especially L acids. The performances of catalysts in phenol alkylation with methanol were studied in a fixed bed reactor. The results showed that the catalyst showed the highest catalytic activity under the conditions of Mg content=7%, calcination temperature=550℃ and calcination time=4.5 h.At 460℃, n(phenol):n(methanol)=1:4, WHSV=3.0 h^-1 and atmospheric pressure, the conversion of phenol was 80.1% and the selectivity to o-cresol was 86.4%.
- mesoporous molecular sieves,
- Mg/Ce-SBA-15,
- phenol,
- o-cresol,
- regeneration
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