摘要
考察了反应条件、不同烷烃和不同分子筛对含噻吩烷烃裂化脱硫反应的影响。结果表明 ,较低的反应温度和空速、较高的剂油比有利于裂化脱硫反应 ;几种分子筛的裂化脱硫活性按下列次序递减 HY,Hbeta,HZSM 5 ;噻吩的裂化与烷烃的类型及其裂化能力密切相关。在与烷烃共存的条件下 ,噻吩在分子筛上的裂化脱硫主要是通过噻吩与 B酸中心及烷烃间的氢转移反应实现的 ,所以有利于氢转移反应的条件也有利于含噻吩烷烃的裂化脱硫反应。
Theeffectsofreactions,differentparaffinsasreactants,and differentzeolitesascat alysts,on the cracking desulfurization of thiophene contained paraffins were investigated.The results showed thatlow temperature,low space velocity,and high cat oilratio favored the cracking desulfuriza tion reaction.Theactivitiesofdifferentzeolitesforthecracking desulfurization reaction wereattenuated in the following order:HY,Hbeta,and HZSM 5 .Thecracking ofthiophenewasclosely related to theparaf fin used and also it'scracking ability.Theresults indicated thatthe reaction condition favored the hydro gen transferreaction also promoted the cracking desulfurization ofthiophene.
出处
《石油炼制与化工》
EI
CAS
CSCD
北大核心
2000年第3期58-62,共5页
Petroleum Processing and Petrochemicals
关键词
催化裂化
脱硫
分子筛
汽油
噻吩烷烃
thiophene
cracking
desulfurization
molecularsieve
hydrogen transfer
