过氧化叔丁醇在钼催化剂下对二苯并噻吩的一步氧化脱硫  

One Step Catalytic Oxidation of Dibenzothiophene Using t-Butyl Hydroperoxide over Molybdenum Oxide Catalyst

作　　者：张珊珊[1] 周新锐[1] 王静[1] 赵德丰[1] 

机构地区：[1]大连理工大学精细化工国家重点实验室

出　　处：《石油与天然气化工》2008年第1期1-4,8,共5页Chemical engineering of oil & gas

摘　　要：以油溶性过氧化叔丁醇(TBHP)为氧化剂,树脂负载的氧化钼(MoO3)为催化剂对二苯并噻吩(DBT)的十氢萘溶液进行了氧化脱硫(ODS)研究。重点考察了反应温度、反应时间、烯烃类化合物、以及催化剂载体(弱酸性阳离子交换树脂D113和D751)对DBT转化率和选择性的影响。实验结果表明:TBHP/MoO3/D113和TBHP/MoO3/D751,在100℃,反应时间3h时,DBT的转化率达到99.2%以上。MoO3/D113和MoO3/D751催化剂具有相似的催化活性,MoO3/D113催化剂对DBT催化具有更好的选择性,MoO3/D751催化剂具有更高的稳定性。非极性的DBT转化成极性的DBT砜之后很容易吸附在树脂上,使DBT的脱除一步完成。MoO3/D113和MoO3/D751重复使用十次,活性没有发生明显改变。The research of oxidative desulfurization on the decalin solution with sulfur compounds of dibenzothiophene(DBT)was performed,where the oil-soluble t-butyl hydroperoxide(TBHP)was used as the oxidant and the molybdenum oxide(MoO3)catalyst supported on resins was used as catalyst.The influence of different factors on the conversion and the selectivity of DBT were chiefly investigated,such as reaction temperature,reaction time,alkenes,and carriers of the catalyst(cationic exchange resins D113 and D751),etc.The results showed that the conversion of DBT could reach 99.2% at 100℃ in 3h using TBHP in the presence of MoO3/D113 and MoO3/D751 catalysts.MoO3/D113 and MoO3/D751 catalysts had similar catalytic activity,but MoO3/D113 catalyst had a better selectivity to DBT oxidation and MoO3/D751 catalyst had a better stability.The non-polar DBT could be converted into polar DBT sulfone,which was easily adsorbed on MoO3/D113 and MoO3/D751 catalysts.The activities of MoO3/D113 and MoO3/D751 catalysts were not obviously changed after recycling ten times.

关 键 词：二苯并噻吩 氧化脱硫 树脂 吸附 

分 类 号：TE621[石油与天然气工程—油气加工工程]