Metathesis of Butylene-2 and Ethylene to Propylene over 3.0Mo/(Hβ+γ-Al_(2)O_(3))Catalysts with Differentγ-Al_(2)O_(3)Contents  

作　　者：LIU Sheng-lin HUANG Sheng-jun XIN Wen-jie BAI Jie XIE Su-juan XU Long-ya 

机构地区：[1]Laboratory of Natural Gas Utilization and Applied Catalysis,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,P.R.China

出　　处：《Chemical Research in Chinese Universities》2005年第2期213-216,共4页高等学校化学研究(英文版)

基　　金：the National Natural Science Foundation of China(No.20303019);the National 973 Project of China(No.2003CB615802).

摘　　要：A series of 3.0Mo/(Hβ+γ-Al_(2)O_(3))samples withγ-Al_(2)O_(3)contents in the range of 0_100%(mass fraction)was studied by means of XRD,NH_(3)-TPD,TPR and BET determinations for characterizing their structures.The Hβzeolite structure in the 3.0Mo/Hβsample can be effectively stabilized by adding someγ-Al_(2)O_(3)to Hβzeolite.γ-Al_(2)O_(3)mainly favors the formation of polymolybdate or multilayered Mo oxide,while Hβmainly forms the Al_(2)(MoO_(4))_(3)species,as evaluated by the TPR technique.When used as the catalyst for the metathesis of butylene-2 and ethylene to propylene,there exists a close correlation between the specific surface area and stability of the catalyst.The specific surface area of the catalyst shows the maximum when{(Hβ+}γ-Al_(2)O_(3))contains 30%γ-Al_(2)O_(3),which is in agreement with that of the time needed for the reaction stablization.In the case of maximum surface area,the rate of coke deposition is the minimum.

关 键 词：Butylene-2 Ethylene PROPYLENE METATHESIS Mo-impregnated(Hβ+γ-Al_(2)O_(3))catalyst {γ-Al_(2)O_(3)}content TPR/TPD/XRD characterization 

分 类 号：O643[理学—物理化学] TQ426[理学—化学]