燃料化学学报Issue(7)：833-838,6.
二甲基二硫醚对 Ni/Al2 O3催化剂加氢性能的影响
Study of poisoning effect of dimethyl disulfide on Ni/Al2O3 catalyst for hydrogenation
摘要
Abstract
Poisoning effect of dimethyl disulfide ( CH3 SSCH3 ) on Ni/Al2 O3 catalysts for hydrogenation of benzene, cyclohexene and styrene was studied. The structures and properties of the catalysts were investigated by means of BET, XRD, H2-TPR, XPS, SEM and EA. Results indicated that with the existence of CH3 SSCH3 , Ni/Al2 O3 catalysts quickly deactivated for benzene and cyclohexene hydrogenation, while the activity for styrene hydrogenation remained well. The sulfur tolerance of Ni/Al2 O3 catalysts for cyclohexene hydrogenation was little better than that of benzene hydrogenation. The conversion of conjugated double bond of styrene can keep 100% for a long time. For hydrogenation reactions, the poisoning effects of CH3 SSCH3 over Ni/Al2 O3 were in the order of aromatic nucleus>monoene>conjugated alkene. In addition, poisoning mechanism of CH3 SSCH3 for Ni/Al2 O3 catalyst was also discussed. CH3 SSCH3 molecules were firstly adsorbed on the surface of catalyst and then dissociated to CH4 under the function of hydrogen and catalyst. It is concluded that the toxicity of carbon in CH3 SSCH3 for catalysts isneglectful and remaining sulfur is the dominant poisoning factor by the interaction with active component.关键词
二甲基二硫醚/Ni/ Al2 O3/加氢反应/失活机理Key words
dimethyl disulfide/Ni/Al2 O3/hydrogenation/poison分类
化学化工引用本文复制引用
冯军鹏,张晔,吕占军,李学宽..二甲基二硫醚对 Ni/Al2 O3催化剂加氢性能的影响[J].燃料化学学报,2014,(7):833-838,6.基金项目
中国科学院战略性先导科技专项(A 类)(XDA07020400) （A 类）
中国科学院山西煤炭化学研究所知识创新工程(ylsc5c1581)。 （ylsc5c1581）
