[HPMo][OTAC]_2/SiO_2的制备及其催化柴油氧化脱硫的研究

Synthesis of 2/SiO2 and the Application in Catalytic Oxidative Desulfurization of Diesel Oil

采用溶胶-凝胶法制备不同负载量的[HPMo][OTAC]2/SiO2,通过红外光谱、比表面积和孔结构分析对[HPMo][OTAC]2/SiO2进行表征,考察负载量、催化剂用量、氧化剂用量、反应温度和反应时间对模拟柴油脱硫效果的影响。结果表明,掺杂后的催化剂保持了Keggin结构,[HPMo][OTAC]2/SiO2在最佳反应条件下,苯并噻吩的脱除率达到48.3%,二苯并噻吩的脱除率达到67.2%。

Mesoporous catalysts [HPMo] [OTAC]2/SiO2 with different loading amount of [ HPMo] [ OTAC]2/SiO2 are pre- pared by sol- gel method. The catalysts are characterized by FT- IR and pore structure parameters, and the influences of loading amount, catalyst dosage, H202 amount, reaction temperature and reaction time on the oxidative desulfurization of model diesel oil are also investigated. The results show that the Keggin structures of all the loaded catalysts are kept. Under the optimal reaction conditions, the desulfurization rate of [HPMo] [OTAC]2/SiO2 can be up to 48.3% for BT and 67.2% for DBT.