化工学报2018，Vol.69Issue(1)：405-413,9.DOI:10.11949/j.issn.0438-1157.20170727
基于镁铝水滑石的Mo/Al2O3-MgO催化剂制备及其加氢脱硫性能
Mo/Al2O3-MgO catalyst preparation from MgAl-hydrotalcite and their hydrogenation desulfurization performance
摘要
Abstract
Diesel production with low/no sulfur content is a major trend in world-wide development of clean fuels.Among many alternative technologies, hydrogenation desulfurization (HDS) is most effective to produce clean diesel at industrial scale, which development of highly active catalysts is the key.In this study, a series of Mo/Al2O3-MgO catalysts were prepared by metal oxide composites of MgAl-hydrotalcite and alumina as carriers with incipient-wetness impregnation method.Their catalytic performance was evaluated on dibenzothiophene (DBT) solution inn-heptane as raw material in a fixed-bed reactor.The results showed that Mg/Al molar ratio, calcination temperature, and additive amount all affected acidity, reduction and sulfidation of the catalysts and stacking degree of MoS2 crystallites.When Mg/Al molar ratio was 3, calcination temperature was 800℃, and hydrotalcite was 10％ (mass), the obtained catalyst has the highest HDS activity with up to 96.2％ desulfurization rate.Appropriate catalyst acidity and suitable interaction between active component and carrier make it easier to sulfide the active component, which is beneficial to improve stacking degree of MoS2 crystallites and enhance catalytic performance.关键词
镁铝水滑石/Mo/Al2O3-MgO/催化剂/加氢脱硫/活性Key words
MgAl-hydrotalcite/Mo/Al2O3-MgO/catalyst/hydrogenation desulfurization/reactivity分类
能源科技引用本文复制引用
岳源源,郑晓桂,康颖,白正帅,袁珮,朱海波,鲍晓军..基于镁铝水滑石的Mo/Al2O3-MgO催化剂制备及其加氢脱硫性能[J].化工学报,2018,69(1):405-413,9.基金项目
国家自然科学基金联合基金项目(U1462203) （U1462203）
国家自然科学基金青年基金项目(21506034). supported by the Joint Funds of the National Natural Science Foundation of China(U1462203) and the Young Scientists Fund of the National Natural Science Foundation of China (21506034). （21506034）
