A novel [Bmim]PW/HMS catalyst with high catalytic performance for the oxidative desulfurization process

• Published in: The Korean journal of chemical engineering Vol. 30; no. 2; pp. 314 - 320
• Main Authors: Tang, Ling, Luo, Guangqing, Kang, Lihua, Zhu, Mingyuan, Dai, Bin
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01-02-2013; 한국화학공학회
• Subjects: Biotechnology; Catalysis; Chemistry; Chemistry and Materials Science; Industrial Chemistry/Chemical Engineering; Materials Science; Reaction Engineering; 화학공학; Catalytic Oxidation Desulfurization; [Bmim]PW/HMS; Dibenzothiophene
• ISSN: 0256-1115; 1975-7220
• DOI: 10.1007/s11814-012-0182-1

To effectively reduce the sulfur content in model fuel, [Bmim]PW/HMS catalyst was synthesized through impregnating the hexagonal mesoporous silica (HMS) support by phosphotungstic acid (HPW) and ionic liquid [Bmim] HSO
4
. Physical structure characterizations of the catalysts showed that HMS retained mesoporous structure, and [Bmim] PW was well dispersed on the support of HMS. The catalytic activity of the [Bmim]PW/HMS was evaluated in the oxidative desulfurization process, and the optimal reaction conditions including loading of the catalysts, reaction temperature, catalyst amount, O/S (H
2
O
2
/sulfur) molar ratio and agitation speed were investigated. Under the optimal reaction conditions, the conversion of benzothiophene (BT), dibenzothiophene (DBT) and 4, 6-dimethyldibenzothiophene (4, 6-DMDBT) could reach 79%, 98%, 88%, respectively.