FPDH-2低铂脱氢催化剂稳定性及再生性能研究  

Stability and regeneration performance of low Pt-based dehydrogenation catalyst FPDH-2

作　　者：王振宇[1] 郑步梅[1] 张淑梅[1] 乔凯[1] WANG Zhen-yu ZHENG Bu-mei ZHANG Shu-mei QIAO Kai(Fushun Research Institute of Petroleum and Petrochemicals, Fushun 113001, China)

机构地区：[1]中国石油化工股份有限公司抚顺石油化工研究院,辽宁抚顺113001

出　　处：《天然气化工—C1化学与化工》2017年第3期12-15,共4页Natural Gas Chemical Industry

摘　　要：采用小型脱氢装置和微反装置对抚顺石油化工研究院(FRIPP)开发的第二代低碳烷烃脱氢催化剂FPDH-2进行了稳定性和再生性能的考察,采用X射线衍射、场发射透射电镜和NH3程序升温脱附对催化剂进行了表征。结果表明,FPDH-2催化剂拥有较第一代催化剂FPDH-1更低的Pt含量和更高的Pt分散度。在625℃、0.25MPa、空速1000h^(-1)和氢烃比(物质的量比)1:1的条件下,FPDH-2催化剂的丙烷转化率为22%~26%,丙烯选择性为80%~81%;在590℃、0.1MPa、空速1500h-1和氢烃比1:1的条件下,其异丁烷脱氢转化率为38%~45%,异丁烯选择性为91%~95%。催化剂长运转稳定性和重复再生性能良好。The second generation catalyst FPDH-2 for dehydrogenation of low carbon alkanes has been developed by Fushun Petrochemical Research Institute （FRIPP）. The stability and regeneration performance of FPDH-2 were investigated by a small dehydrogenation unit and a micro reactor. The catalysts were characterized by means of X ray diffraction, field emission gun transmission electron microscope and temperature programmed desorption of NH3. The results show that the catalyst FPDH-2 has lower Pt content and higher Pt dispersion than the first generation catalyst FPDH-1. Over FPDH-2, the propane conversion and propylene selectivity were 22%-26% and 80%-81%, respectively, under the reaction conditions of 625℃, 0.25MPa, GHSV of 1000h-1 and hydrogen/hydrocarbon molar ratio of 1：1, and the isobutane conversion and isobutylene selectivity were 38%-45% and 91%-95%, respectively, under the reaction conditions of 590℃, 0.1MPa, GHSV of 1500h-1 and hydrogen/hydrocarbon molar ratio of 1：1. The catalyst exhibited excellent stability and regeneration property.

关 键 词：Pt 催化剂 脱氢 丙烷 丙烯 丁烷 丁烯 

分 类 号：O643.3[理学—物理化学] TQ426[理学—化学]