Mukti Nur Indah Fajar, Ariyanto Teguh, Sediawan Wahyudi Budi, Prasetyo Imam
Department of Chemical Engineering, Faculty of Engineering, Universitas Gadjah Mada Yogyakarta 55281 Indonesia
Department of Chemical Engineering, Faculty of Industrial Technology, Universitas Islam Indonesia Yogyakarta 55584 Indonesia.
RSC Adv. 2023 Aug 1;13(33):23158-23168. doi: 10.1039/d3ra02890a. eCollection 2023 Jul 26.
It is necessary to separate CO from biogas to improve its quality for the production of biomethane. Herein, an improvement in the separation of CO/CH adsorption was achieved by modifying the surface of CMS. The surface modification of CMS was performed by impregnation with metal oxide (FeO) and N-doping (DES-[ChCl:Gly]). Subsequently, the efficacy of the surface-modified CMS was investigated. This involved CMS modification, material characterization, and performance analysis. The uptake of CO by CMS-DES-[ChCl:Gly] and CMS-FeO was comparable; however, their performance for the separation of CO/CH was different. Consequently, CMS-DES-[ChCl:Gly] and CMS-FeO exhibited 1.6 times enhanced CO uptake capacity and 1.70 times and 1.55 times enhanced CO/CH separation, respectively. Also, both materials exhibited similar repeatability. However, CMS-DES-[ChCl:Gly] was more difficult to regenerate than CMS-FeO, which is due to the higher adsorption heat value of the former (59.5 kJ).
有必要从沼气中分离出一氧化碳以提高其质量，用于生物甲烷的生产。在此，通过对碳分子筛（CMS）表面进行改性，实现了一氧化碳/甲烷吸附分离性能的提升。CMS的表面改性通过用金属氧化物（FeO）浸渍和氮掺杂（DES-[氯化胆碱：甘氨酸]）来进行。随后，对表面改性后的CMS的效能进行了研究。这包括CMS改性、材料表征和性能分析。CMS-DES-[氯化胆碱：甘氨酸]和CMS-FeO对一氧化碳的吸附量相当；然而，它们对一氧化碳/甲烷的分离性能有所不同。因此，CMS-DES-[氯化胆碱：甘氨酸]和CMS-FeO的一氧化碳吸附容量分别提高了1.6倍，一氧化碳/甲烷分离性能分别提高了1.70倍和1.55倍。此外，两种材料都表现出相似的重复性。然而，CMS-DES-[氯化胆碱：甘氨酸]比CMS-FeO更难再生，这是由于前者的吸附热数值更高（59.5 kJ）。
