化工学报 ›› 2024, Vol. 75 ›› Issue (4): 1137-1152.DOI: 10.11949/0438-1157.20231401
张子佳1(), 仇昕月1, 孙翔2, 罗志斌2, 罗海中2, 贺高红1, 阮雪华1()
收稿日期:
2023-12-31
修回日期:
2024-02-10
出版日期:
2024-04-25
发布日期:
2024-06-06
通讯作者:
阮雪华
作者简介:
张子佳(1998—),男,硕士研究生,zhangzijia@mail.dlut.edu.cn
基金资助:
Zijia ZHANG1(), Xinyue QIU1, Xiang SUN2, Zhibin LUO2, Haizhong LUO2, Gaohong HE1, Xuehua RUAN1()
Received:
2023-12-31
Revised:
2024-02-10
Online:
2024-04-25
Published:
2024-06-06
Contact:
Xuehua RUAN
摘要:
膜技术基于渗透性差异实现天然气无相变脱碳,节能优势显著,此外膜装置的模块化制造可以灵活应对非常规天然气开采规模的大幅变化。聚酰亚胺(PI)是一种广泛研究的玻璃态聚合物膜材料,脱碳选择性较高、化学稳定性好,近年来在天然气脱碳领域已实现工业应用。尽管如此,通过分子结构设计提升聚酰亚胺膜的渗透性,从而大幅降低膜装置建设成本和占地面积,仍是未来的重要研究方向。从气体在玻璃态聚合物膜中的渗透传质机制出发,归纳总结了芳香族聚酰亚胺在链段构型与柔顺性、大位阻侧基、主链轴节结构等方面的设计进展以及膜材料自由体积分数和气体渗透系数随之发生变化的内在规律,对聚酰亚胺膜材料分子结构设计的未来发展方向进行了展望,兼顾考虑自由体积分数和自由体积空穴尺寸分布范围是同时提高渗透性和选择性的重要途径。
中图分类号:
张子佳, 仇昕月, 孙翔, 罗志斌, 罗海中, 贺高红, 阮雪华. 聚酰亚胺膜材料分子结构设计强化CO2渗透性研究进展[J]. 化工学报, 2024, 75(4): 1137-1152.
Zijia ZHANG, Xinyue QIU, Xiang SUN, Zhibin LUO, Haizhong LUO, Gaohong HE, Xuehua RUAN. Progress in molecular structure design for polyimide membrane materials to enhance CO2 permeation ability[J]. CIESC Journal, 2024, 75(4): 1137-1152.
图11 6FDA-BAPM、6FDA-BATFMM和6FDA-BABTFMM分子结构及其链堆积结构示意图[32]
Fig.11 Structure and schematic of chain packing structure of 6FDA-BAPM, 6FDA-BATFMM and 6FDA-BABTFMM[32]
膜种类 | 测试压力/MPa | 测试 温度/℃ | CO2渗透系数/Barrer | 文献 |
---|---|---|---|---|
6FDA-FSBC | — | 35 | 66.0 | [ |
6FDA-SBC | — | 35 | 32.1 | [ |
6FDA-MSBC | — | 35 | 21.2 | [ |
6FDA-BAN | — | — | 845.0 | [ |
DPt-TMPD | 0.2 | 35 | 2035.0 | [ |
DBPI-550 | 0.4 | 35 | 20639.0 | [ |
CTPI-550 | 0.6 | 35 | 4633.0 | [ |
BBPI | — | — | 275.3 | [ |
6FDA-FFDA/DAM | — | — | 197.1 | [ |
表1 典型侧基改性聚酰亚胺膜的CO2渗透性
Table 1 CO2 permeability of typical substitution modified PI membranes
膜种类 | 测试压力/MPa | 测试 温度/℃ | CO2渗透系数/Barrer | 文献 |
---|---|---|---|---|
6FDA-FSBC | — | 35 | 66.0 | [ |
6FDA-SBC | — | 35 | 32.1 | [ |
6FDA-MSBC | — | 35 | 21.2 | [ |
6FDA-BAN | — | — | 845.0 | [ |
DPt-TMPD | 0.2 | 35 | 2035.0 | [ |
DBPI-550 | 0.4 | 35 | 20639.0 | [ |
CTPI-550 | 0.6 | 35 | 4633.0 | [ |
BBPI | — | — | 275.3 | [ |
6FDA-FFDA/DAM | — | — | 197.1 | [ |
膜 | 测试压力/MPa | 测试 温度/℃ | CO2渗透系数/Barrer | 文献 |
---|---|---|---|---|
TNTDA-DAT | 0.1 | 25 | 728.0 | [ |
6FcDA-Me2NH2-TB | 2987.0 | [ | ||
CANAL-PI-Me2NH2 | 0.2 | 35 | 1691.0 | [ |
SBIDA-DMNDA | 0.5 | 35 | 1400.0 | [ |
BTA-CANAL-2 | 0.2 | 35 | 1995.0 | [ |
PIM-PI | 0.2 | 30 | 2000.0 | [ |
PMDA-DAT | — | 35 | 79.5 | [ |
6F6FTB-0.5-450 | — | — | 1317.0 | [ |
PI-TB-7 | 0.1 | 35 | 112.0 | [ |
PIM-PI-EA | — | 35 | 7340.0 | [ |
PIM-TM-Ac-300 | 0.1 | 35 | 194.0 | [ |
表2 典型主链结构调整聚酰亚胺膜的CO2渗透性
Table 2 CO2 permeability of PI membranes with typical backbone structure adjustment
膜 | 测试压力/MPa | 测试 温度/℃ | CO2渗透系数/Barrer | 文献 |
---|---|---|---|---|
TNTDA-DAT | 0.1 | 25 | 728.0 | [ |
6FcDA-Me2NH2-TB | 2987.0 | [ | ||
CANAL-PI-Me2NH2 | 0.2 | 35 | 1691.0 | [ |
SBIDA-DMNDA | 0.5 | 35 | 1400.0 | [ |
BTA-CANAL-2 | 0.2 | 35 | 1995.0 | [ |
PIM-PI | 0.2 | 30 | 2000.0 | [ |
PMDA-DAT | — | 35 | 79.5 | [ |
6F6FTB-0.5-450 | — | — | 1317.0 | [ |
PI-TB-7 | 0.1 | 35 | 112.0 | [ |
PIM-PI-EA | — | 35 | 7340.0 | [ |
PIM-TM-Ac-300 | 0.1 | 35 | 194.0 | [ |
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