Ca或Ce对PtSn/MCM-41催化剂的结构及催化丙烷脱氢性能的影响  

EFFECTS OF ADDITION OF Ca OR Ce ON THE STRUCTURE AND CATALYTIC PROPERTIES OF PtSn/MCM-41 CATALYST FOR PROPANE DEHYDROGENATION TO PROPYLENE

作　　者：郭先芝[1] 张希彬 杨太利[1] 王淑荣[1] 王彦美[1] 吴世华[1] 

机构地区：[1]南开大学化学系,天津300071 [2]天津市静海县教师进修学校,天津301600

出　　处：《离子交换与吸附》2013年第1期16-22,共7页Ion Exchange and Adsorption

基　　金：天津市科技支撑项目(11ZCKFSF02300);国家自然科学基金(No.21271107)

摘　　要：制备了Ca或Ce改性的PtSn/MCM-41催化剂,利用XRD、N2吸附-脱附、TPR、TEM和TGA等技术对所制备的催化剂进行了表征,采用微型催化反应装置评价了其催化丙烷脱氢的性能,并分析了反应后催化剂的积炭情况。结果表明,PtSn/MCM-41催化剂中加入Ca或Ce助剂后,增强了丙烷脱氢催化性能,这不仅与助剂和活性组分之间的强烈相互作用有关,而且Ca或Ce助剂的加入会减少由于积炭而导致催化剂的失活。The Ca or Ce modified PtSn/MCM-41 catalysts were prepared, and characterized by XRD, N2 adsorption-desorption, TPR, TEM and TGA. The catalytic properties of the catalysts for propane dehydrogenation to propylene were assessed using microreactor system. The experimental results showed that addition of Ca or Ce to PtSn/MCM-41 catalyst enhanced the dehydrogenation property of the catalyst, which could result from both the strong interaction between the additives and the active component, and the inhibition action of coke deposit by the addition of Ce or Ca.

关 键 词：丙烷催化脱氢 PTSN MCM-41 CE CA 催化性能 

分 类 号：O643.3[理学—物理化学]