Thermodynamic analysis of C2H4/C2H6 separation based on silver-based containing ionic liquid

被引：0

作者：

Yang, Peng ^{[1
,3
]}

Liu, Wei ^{[2
]}

Wang, Zongxu ^{[2
,3
]}

Dong, Haifeng ^{[2
,3
]}

Ren, Mengyu ^{[3
]}

Li, Dan ^{[3
]}

Cai, Aizi ^{[3
]}

Jin, Xiao ^{[2
,3
]}

Wang, Junnan ^{[3
]}

Fang, Yanxiong ^{[1
,2
]}

机构：

[1] Guangdong Univ Technol, Sch Light Ind & Chem Engn, Guangzhou Key Lab Clean Transport Energy Chem, Guangzhou 510006, Peoples R China

[2] Chinese Acad Sci, CAS Key Lab Green Proc & Engn, State Key Lab Mesosci & Engn, Beijing Key Lab Ion Liquids Clean Proc,Inst Proc E, Beijing 100190, Peoples R China

[3] Huizhou Inst Green Energy & Adv Mat, Huizhou 516081, Guangdong, Peoples R China

来源：

CHEMICAL ENGINEERING SCIENCE | 2025年 / 315卷

基金：

中国国家自然科学基金;

关键词：

C; 2; H; 4; /C; 6; separation; Thermodynamic model; Absorption mechanism; Silver-based containing ionic liquid; GAS SOLUBILITY; ABSORPTION; TEMPERATURE; MEMBRANE; CO2;

D O I：

10.1016/j.ces.2025.121862

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Low-energy C2H4/C2H6 separation processes based on ionic liquids are a hot topic of research. Among them, silver-based containing ionic liquids (Ag-ILs) exhibit excellent separation performance. The absorption thermodynamic of this system is crucial for the development of new processes. At 313.15 to 333.15 K, the solubility of C2H4 and C2H6 in Ag-ILs was measured. Combined with the fitting of the solubility of the "deactivation model", the Henry's constant (H) and the reaction equilibrium constant (K) were obtained, which accurately described the absorption behavior of C2H4 in Ag-IL, and the relationship between the enthalpy of absorption and the solubility was correlated. Furthermore, combined with quantum chemical computation, the absorption mechanism was revealed that complexation reaction led to higher solubility of C2H4, and the enthalpy of the reaction is the main driving force. This paper provides theoretical support for the industrial research on the C2H4/C2H6 separation by Ag-IL.

引用

页数：9

共 48 条

[1] Selectivity Tuning of Adsorbents for Ethane/Ethylene Separation: A Review [J].