免焙烧对FCC汽油选择性加氢脱硫CoMo/Al_2O_3催化剂性能的影响  

Influence of Non-Calcination on the Catalytic Performance of Co-Mo/Al_2O_3 Catalysts for FCC Gasoline Selective Hydrodesulfurization

作　　者：梁香娜[1] 杨红健[1] 张舜光[1] 侯凯湖[1] 

机构地区：[1]河北工业大学化工学院,天津300130

出　　处：《化学反应工程与工艺》2010年第1期37-41,共5页Chemical Reaction Engineering and Technology

基　　金：中国石油天然气股份有限公司科学研究与技术开发项目(06-03A-01-01-03)

摘　　要：在相同的其它条件下制备了用于流化催化裂化(FCC)汽油选择性加氢脱硫的免焙烧和焙烧的CoMo/Al_2O_3催化剂,并用扫描电镜(SEM)、X射线衍射(XRD)、红外光谱(FT-IR)等对其进行了比较性地表征和评价。结果表明,免焙烧催化剂的酸量大于焙烧催化剂的,焙烧与否对催化剂的酸类型几乎没有影响,这两类催化剂的酸中心均主要为L酸;免焙烧Co-Mo/Al_2O_3催化剂的活性组分与载体间的相互作用较弱,进而使活性组分颗粒的颗粒团聚程度降低、分布趋于均匀和易于被还原。在所考察的评价条件范围内。免焙烧Co-Mo/Al_2O_3催化剂的催化性能优于焙烧Co-Mo/Al_2O_3催化剂的。The Co-Mo/Al2O3 catalysts for fluidized catalytic cracking （FCC） gasoline selective hydrodesulfurization were prepared at the same other conditions except for with or without calcination, and were comparatively characterized and evaluated. The results indicated that the acid amount of the non-calcination catalyst was greater than that of the calciation catalyst, and the acid type of the catalysts, mainly relating with L acid, was no any effectted by calciation or not. The interaction between the active metal component and the support of the non-calciation catalyst was lesser than that of its counterpart so that the active metal components on its surface had a lower aggregation and better dispersion, and was more easily reduced. The non-calcination Co-Mo/Al2O3 catalyst was superior to its counterpart in the hydrodesulfurization activity and selectivity within the condition ranges examined.

关 键 词：流化催化裂化汽油 焙烧 加氢脱硫 负载型钴钼催化剂 

分 类 号：O643.32[理学—物理化学]