化工进展2017，Vol.36Issue(11)：4072-4079,8.DOI:10.16085/j.issn.1000-6613.2017-0356
活性炭负载磷钨酸催化剂的制备及其催化氧化脱硫性能
Preparation and performance of phosphotungstic acid/activated carbon catalyst for catalytic oxidative desulfurization
摘要
Abstract
The HPW/AC catalyst was prepared by the incipient wetness impregnation method with activated carbon and phosphotungstic acid(HPW)as the support and active component respectively. The model fuel was prepared by dissolving dibenzothiophene(DBT)into n-dodecane yielding a sulfur concentration of 800μg/g,for which HPW/AC was investigated with hydrogen peroxide(H2O2)as oxidant. HPW/AC was characterized by the means of BET,SEM and XRD. The effects of oxidative temperature,reaction time,the mount of H2O2,the dosage of catalyst and CTAB on the performance of HPW/AC for the oxidative desulfurization(ODS)were also investigated. The reusability of HPW/AC was explored as well. The results showed that HPW/AC with activation of 45％ HNO3 at HPW loading amount of 30％ had the best performance in the ODS. The optimum reaction conditions were determined as oxidative temperature at 80℃,the molar ratio of oxidant to sulfur of 12,and the dosage of catalyst and CTAB of 0.05g/mL and 0.004g/mL in the model fuel,under which DBT was substantially converted to dibenzothiophene sulfone(DBTO2). After extracted by N-methyl pyrrolidone(NMP)with a volumetric ratio of 1,the model fuel could achieve a sulfur removal rate as high as 90.4％. The presence of aromatic compounds and alkenes inhibited the ODS of DBT,and the inhibiting effect caused by alkenes was more significant. The catalyst could be regenerated as well.关键词
模拟油/HPW/AC催化剂/氧化脱硫/过氧化氢Key words
model fuel/phosphotungstic acid/activated carbon catalyst/oxidative desulfurization/hydrogen peroxide分类
能源科技引用本文复制引用
侯影飞,李力军,蒋驰,郭宁,牛青山..活性炭负载磷钨酸催化剂的制备及其催化氧化脱硫性能[J].化工进展,2017,36(11):4072-4079,8.基金项目
国家自然科学基金(51173203)、中央高校基本科研业务费专项资金(15CX05014A)及山东省自然科学基金(ZR2012BL15) 项目. （51173203）
