摘要
采用浸渍法制备Co/HZSM-5催化剂用于丙烷催化脱氢制丙烯反应,对其进行预处理,使反应可在低温下进行,然后采用响应曲面考察工艺条件对该反应的影响。利用XRD、SEM、NH_(3)-TPD、H_(2)-TPR、氮气物理吸附-脱附等手段对催化剂进行表征,并在固定床反应器上对催化剂性能进行评价。结合实际实验条件可得最佳工艺条件为:反应温度461℃、Co负载量2.4%、GHSV为4300 h^(−1);此时,丙烯收率为27.7%,对应的丙烯选择性93.8%。
Co/HZSM-5 catalyst was fabricated for catalytic dehydrogenation of propane to propylene,which was pretreated to allow the reaction to react at low temperatures.A response surface approach was employed to examine the effect of process conditions on the reaction.The morphological and oxidative performance of Co/HZSM-5 was characterized by XRD,XPS,SEM,NH_(3)-TPD,H_(2)-TPR,and nitrogen physical absorption-desorption.Besides,the in-situ catalyst performance was evaluated by a fixed-bed reactor.Combining the actual experimental conditions,the optimal process conditions parameters obtained by the response surface method were as follows:a reaction temperature of 461℃,a Co loading of 2.4%,and a GHSV of 4300 h^(−1).At this point,the propylene yield reached 27.7%and the corresponding propylene selectivity was up to 93.8%.
作者
仇新玲
柴瑞栋
仲富
底秀玲
陆江银
QIU Xin-ling;CHAI Rui-dong;ZHONG Fu;DI Xiu-ling;LU Jiang-yin(Key Laboratory of Oil&Gas Fine Chemicals Ministry of Education,Xinjiang Uyghur Autonomous Region,School of Chemical Engineering,Xinjiang University,Urumqi 830046,China)
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2022年第11期1498-1510,共13页
Journal of Fuel Chemistry and Technology
基金
supported by the National Natural Science Foundation of China (21968034)。
