CALF-20-Based Porous Liquids for Enhanced SO2 Capture

IF 3.9 3区工程技术 Q2 ENGINEERING, CHEMICAL

Industrial & Engineering Chemistry Research Pub Date : 2026-10-20 DOI:10.1021/acs.iecr.6c03079

Yong Pan,SuWen Hu,Yong Zhou,WanYan Chen,QiaoQiao Tang,LiWei Cheng,GuangJin Chen

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Abstract

Currently, efforts are being made to develop desulfurization technologies featuring high desulfurization efficiency, renewable desulfurizers, and low corrosivity. In this study, a comparative study was conducted of SO2 capture by ten kinds of metal–organic framework (MOF)-based porous liquids. Calgary framework-20 (CALF-20)/poly(ethylene glycol) dimethyl ether (NHD) with pore width of 5.2 Å × 5.7 Å are found to be optimal for SO2 capture, exhibiting an a(b)dsorption capacity of 0.12 mol/L under 0.1 bar. The selectivity of SO2/N2 and SO2/CO2 achieves 562 and 51, respectively, and the uptake enthalpy for SO2 is only 30.44 kJ·mol–1. Furthermore, after multiple breakthrough experiments, the uptake still remained unchanged. Meanwhile, process simulations were conducted; when SO2 mol % (≥99.95%) is in the product gas, the capture work is only 0.946 GJ/t SO2. Additionally, the saturated CALF-20-based porous liquids exhibited low corrosivity to carbon steels even after being immersed for 60 days; this anticorrosive absorbent reveals the potential for industrial SO2 capture.

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基于calf -20的多孔液体增强SO2捕获

目前，人们正在努力开发高脱硫效率、可再生脱硫剂和低腐蚀性的脱硫技术。本研究对10种金属有机骨架（MOF）基多孔液体捕集SO2的性能进行了比较研究。研究发现，孔径为5.2 Å × 5.7 Å的Calgary骨架-20 (CALF-20)/聚乙二醇二甲醚（NHD）对SO2的吸附性能最佳，在0.1 bar下的a(b)吸附量为0.12 mol/L。SO2/N2和SO2/CO2的选择性分别达到562和51，SO2的吸收焓仅为30.44 kJ·mol-1。此外，经过多次突破性实验，摄取仍然保持不变。同时，进行了工艺模拟；当产物气中SO2 mol %（≥99.95%）时，捕集功仅为0.946 GJ/t SO2。此外，饱和calf -20基多孔液体即使在浸入60天后，对碳钢的腐蚀性也很低；这种防腐吸收剂揭示了工业二氧化硫捕获的潜力。

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来源期刊

Industrial & Engineering Chemistry Research 工程技术-工程：化工

CiteScore

7.40

自引率

7.10%

发文量

1467

审稿时长

2.8 months

期刊介绍： ndustrial & Engineering Chemistry, with variations in title and format, has been published since 1909 by the American Chemical Society. Industrial & Engineering Chemistry Research is a weekly publication that reports industrial and academic research in the broad fields of applied chemistry and chemical engineering with special focus on fundamentals, processes, and products.