用氧化铁或基于胆化的深溶解剂进行改性碳分子的有效性,用于CO2/CH4的分离
Nur Indah Fajar Mukti1,2,3, Teguh Ariyanto1,3, Wahyudi Budi Sediawan1
1Department of Chemical Engineering, Faculty of Engineering, Universitas Gadjah Mada Yogyakarta 55281 Indonesia imampras@ugm.ac.id.
RSC advances
|August 3, 2023
概括
用氧化铁或N-doping对碳分子 (CMS) 的表面修改增强了从生物气中分离二氧化碳 (CO2). 这两种方法都改善了二氧化碳吸收和二氧化碳2/甲 (CH4) 分离,N-化CMS显示出更高的吸附热量.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
背景情况:
- 生物气改造需要有效地从甲 (CH4) 中分离二氧化碳 (CO2),以生产生物甲.
- 碳分子 (CMS) 是一个潜在的吸附剂,用于CO2/CH4分离.
- 修改CMS的表面可以提高其吸附性能.
研究的目的:
- 通过修改CMS的表面来改善CO2/CH4与沼气的分离.
- 研究用金属氧化物 (Fe3O4) 和N-兴奋剂 (DES-[ChCl:Gly]) 修改的CMS的疗效.
主要方法:
- 通过使用DES-[ChCl:Gly]与Fe3O4和N-doping浸CMS的表面修饰.
- 修改后的CMS的材料特性.
- 对CO2/CH4分离的性能分析,包括CO2吸收能力和分离因子.
- 评估材料的重复性和再生.
主要成果:
- 无论是CMS-Fe3O4还是CMS-DES-[ChCl:Gly],它们都显示出增强的二氧化碳吸收能力 (大约1. 这是1.6倍).
- CMS-DES-[ChCl:Gly]显示了较高的CO2/CH4分离因子 (约. 与CMS-Fe3O4 (大约1.70倍) 相比,CMS-Fe3O4 (大约1.70倍) 的使用率更高. 这是1.55倍).
- CMS-DES-[ChCl:Gly]呈现出更高的吸附热量 (59.5 kJ),使得再生比CMS-Fe3O4.4更具挑战性.
结论:
- 用Fe3O4或N-doping对CMS的表面修改显著提高了CO2/CH4分离性能.
- CMS-DES-[ChCl:Gly]提供了优越的CO2/CH4分离,但由于吸附热量更高,需要更多的能量进行再生.
- 这两种修改后的CMS材料都显示出对生物气升级应用的前景.
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