Molecular-level manipulation of polyamide membranes for high-performance H2/CO2 separation

被引：6
作者：
Li, Min [1 ,2 ,3 ]
Yan, Xueru [1 ,2 ,3 ]
Cong, Shenzhen [1 ,2 ,3 ]
Shi, Puxin [1 ,2 ,3 ]
Guo, Zhecheng [1 ,2 ,3 ]
Wang, Caixia [1 ,2 ,3 ]
Luo, Chenglian [1 ,2 ,3 ]
Wang, Zhi [1 ,2 ,3 ]
Liu, Xinlei [1 ,2 ,3 ]
机构：
[1] Tianjin Univ, Chem Engn Res Ctr, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China
[2] Tianjin Univ, Tianjin Key Lab Membrane Sci & Desalinat Technol, State Key Lab Chem Engn, Tianjin 300072, Peoples R China
[3] Tianjin Univ, Haihe Lab Sustainable Chem Transformat, Tianjin 300072, Peoples R China
来源：
JOURNAL OF MEMBRANE SCIENCE | 2024年 / 700卷
基金：
中国国家自然科学基金;
关键词：
Polyamide membrane; Substrate-confinement effect; Molecular-level manipulation; Gas separation; SURFACE MODIFICATION; COMPOSITE MEMBRANES; POLYIMIDE MEMBRANES; CROSS-LINKING; POLYBENZIMIDAZOLE; H-2; GAS; PURIFICATION; SEPARATION; HYDROGEN;
D O I：
10.1016/j.memsci.2024.122698
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The preparation of high -performance H 2 /CO 2 polymer separation membranes is an urgent need to reduce the global greenhouse effect. Here, polyamide (PA) membranes with excellent H 2 /CO 2 separation performance are produced using a facile interfacial polymerization (IP) plus heat treatment approach. The synergistic effect of the substrate-confinement and the control of the d-spacing and crosslinking degree of PA membranes creates sufficient H 2 selective channels. The effects of test parameters such as feed temperature and feed pressure on membrane performance were investigated. The ultra -high H 2 /CO 2 selectivity of 110 with excellent H 2 permeance of 180 GPU is observed at 150 degrees C and feed pressure of 2 bar. In addition, PA membranes have highpressure resistance (16 bar), high-temperature resistance (300 degrees C), and attractive durability (210 h). The excellent performance and facile preparation process make them expected to be one of the most promising membranes for H 2 /CO 2 separation.
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页数：10
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