Aerobic oxidative desulfurization via magnetic mesoporous silica-supported tungsten oxide catalysts

Petroleum Science

Chong Peng¹  Lei Dong²  Su-Hang Xun²  Xiang Gao²  Hua-Ming Li²  Jin Xiao²  Wen-Shuai Zhu²  Wei Jiang³  Lin-Hua Zhu⁴  Guang-Ying Chen⁴ 

[1] Dalian Research Institute of Petroleum and Petrochemicals, SINOPEC, Nankai Road 96 of Lushunkou City, 116045, Dalian, People’s Republic of China;Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, 212013, Zhenjiang, People’s Republic of China;Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, 212013, Zhenjiang, People’s Republic of China;School of Materials Science and Engineering, Jiangsu University, 212013, Zhenjiang, People’s Republic of China;School of Chemistry and Chemical Engineering, Hainan Normal University, 571158, Haikou, Hainan, People’s Republic of China;

关键词: Oxidative desulfurization;    Molecular oxygen;    Magnetic separation;    Mesoporous structure;    Tungsten oxide;   

DOI  :  10.1007/s12182-020-00498-y

来源: Springer

【 摘 要 】

It is usually difficult to remove dibenzothiophenes from diesel fuels by oxidation with molecular oxygen as an oxidant. In the study, tungsten oxide was supported on magnetic mesoporous silica by calcination to form a magnetically separable catalyst for oxidative desulfurization of diesel fuel. By tuning different calcining temperatures, the catalyst calcined at 500 °C showed a high catalytic activity with molecular oxygen as the oxidant. Under optimal reaction conditions, the sulfur removal of DBT reached 99.9% at 120 °C after 8 h. Furthermore, the removals of 4-methyldibenzothiophene and 4,6-dimethyldibenzothiophene could also get up to 98.2% and 92.3% under the same conditions. The reaction mechanism was explored by selective quenching experiments and FT-IR spectra.

【 授权许可】

CC BY