Song Jian, Hei Yuepeng, Li Claudia, Yang Naitao, Meng Bo, Tan Xiaoyao, Sunarso Jaka, Liu Shaomin
Department of Chemical Engineering, Shandong University of Technology, Zibo 255049, China.
State Key Laboratory of Separation Membranes and Membrane Processes, Department of Chemical Engineering, Tiangong University, Tianjin 300387, China.
Membranes (Basel). 2022 Feb 5;12(2):191. doi: 10.3390/membranes12020191.
Catalytic dehydrogenation coupling of methane (DCM) represents an effective way to convert natural gas to more useful C products (CH, CH). In this work, BaCeTbCoO (BCTCo) perovskite hollow fiber membranes were fabricated by the combined phase inversion and sintering method. SrCeYbO (SCYb) perovskite oxide was loaded as a catalyst onto the inner hollow fiber membrane surface, which promoted the CH conversion and the C hydrocarbon selectivity during the DCM reaction. The introduction of steam into the methane feed gas mixture elevated the C selectivity and yield due to the alleviation of coke deposition. Switching N to air as the sweep gas further increased the C selectivity and yield. However, the conversion of methane was limited by both the low permeability of the membrane and the insufficient catalytic activity of the catalyst, leading to low C yield.
甲烷催化脱氢偶联反应（DCM）是将天然气转化为更有用的碳产物（CH、CH）的有效途径。在本工作中，采用相转化和烧结相结合的方法制备了BaCeTbCoO（BCTCo）钙钛矿中空纤维膜。将SrCeYbO（SCYb）钙钛矿氧化物作为催化剂负载在内中空纤维膜表面，在DCM反应过程中促进了CH转化和C烃选择性。将蒸汽引入甲烷原料气混合物中，由于减轻了积炭，提高了C选择性和产率。将吹扫气从N切换为空气进一步提高了C选择性和产率。然而，甲烷的转化率受到膜的低渗透率和催化剂催化活性不足的限制，导致C产率较低。
