Flow Channel with Wrinkles and Calcium Sites in a Ca-MOF for Direct One-Step Ethylene Purification from C2 Gases and MTO Products Separation
Haitian Zhao, Suer Guo, Xin Chen, Junyang Jiang, Su Wang, Hao Zhang, Yu Wang, Xingge He, Meng Chen, Wei Wang, Shangyu Wang, Penghui Liu, Hong Dai, Mingxing Zhang
Abstract
The strategy of flow channel with wrinkles and calcium sites for single-step C 2 H 4 purification from C2 gases and methanol-to-olefins (MTO) products separation was realized in FJI-Y9 . The adsorption amounts showed a total reversal order of C 3 H 6 > C 2 H 6 > C 2 H 2 > C 2 H 4 at 298 K. Modeling indicated that the wrinkles and Ca 2+ facilitated the full contact of C 3 H 6 and C 2 H 6 . Breakthrough experiments illustrated that FJI-Y9 could yield pure C 2 H 4 in a single step with a productivity of 0.78 mmol g –1 . In a lone adsorption/desorption cycle for MTO product separation, the productivities of C 3 H 6 and C 2 H 4 were 1.96 and 1.29 mol g –1, standing as the highest recorded values.