摘要
在GS-11乙苯脱氢制苯乙烯催化剂基础上通过增加铈含量、引入选择性调变剂和优化孔结构,开发了节能型催化剂。在负压绝热评价装置上,乙苯空速0.5 h-1、一反/二反入口温度615℃/620℃、水油质量比1.15,二反出口压力-55 kPa条件下,乙苯转化率67.3%,苯乙烯选择性大于97.0%。催速老化实验结果表明,该催化剂的失活速率为-0.004 04%/h,优于最新引进催化剂和GS-11催化剂。
The energy saving catalyst for ethylbenzene dehydrogenation towards styrene, which was based on GS -11 catalyst, was developed by increasing the content of CeO2, introducing selective assistant and optimizing pore structure. The evaluation results on a negative pressure adiabatic reactor show that ethylbenzene conversion was 67.3% and styrene selectivity was more than 97.0% under the operation conditions of inlet temperatures for the 1st and 2nd reactors ：615 ℃ and 620 %, LHSV ：0. 5 h^-1 ,outlet pressure for the 2nd reactor： -55 kPa, mass ratio of steam to ethylbenzene. 1.15. The results of accelerated aging test indicate that the deactivation rate of the catalyst was - 0. 004 04%/h, which was better than that of the newest imported catalyst and GS - 11 catalyst.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2012年第11期1061-1065,共5页
Fine Chemicals
关键词
节能
水油质量比
乙苯
脱氢催化剂
苯乙烯
催化技术
energy saving
steam to oil mass ratio
ethylbenzene
dehydrogenation catalyst
styrene
catalytic technology
