Trace SO2 capture and conversion by a zirconium MOF

IF 31.6 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: R: Reports Pub Date : 2025-07-31 DOI:10.1016/j.mser.2025.101074

Guang-Rui Si , Xiang-Jing Kong , Tao He , Lin-Hua Xie , Michael J. Zaworotko , Jian-Rong Li

{"title":"Trace SO2 capture and conversion by a zirconium MOF","authors":"Guang-Rui Si , Xiang-Jing Kong , Tao He , Lin-Hua Xie , Michael J. Zaworotko , Jian-Rong Li","doi":"10.1016/j.mser.2025.101074","DOIUrl":null,"url":null,"abstract":"<div><div>Whereas 95 % of SO2 from flue gas streams is removed by conventional ﬂue-gas desulfurization (FGD) technologies, multi-stage energy-intensive and waste-generating scrubbing is needed to meet current emission standards (≤35 ppm) and requirements for processes such as CO2 capture and denitrification (<10 ppm). Despite the availability of numerous methods and materials for desulfurization, the integrated capture and conversion of trace SO2 remains challenges. Herein, we report that the layered metal-organic framework (MOF) BUT-86 captures trace (100 ppm) SO2 from simulated flue gas to afford effluent SO2 levels < 10 ppb. Performance is driven by exceptional SO2/CO2 selectivity at 80 % RH. Captured SO2 can be subsequently removed by room temperature conversion to 2-hydroxypropane-2-sulfonic acid to regenerate BUT-86. Reactive SO2 binding involving bisulfite formation that requires the presence of adsorbed water drives the performance of BUT-86, the first sorbent that enables integrated trace SO2 capture and conversion from flue gas.</div></div>","PeriodicalId":386,"journal":{"name":"Materials Science and Engineering: R: Reports","volume":"166 ","pages":"Article 101074"},"PeriodicalIF":31.6000,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Science and Engineering: R: Reports","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0927796X25001524","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Whereas 95 % of SO₂ from flue gas streams is removed by conventional ﬂue-gas desulfurization (FGD) technologies, multi-stage energy-intensive and waste-generating scrubbing is needed to meet current emission standards (≤35 ppm) and requirements for processes such as CO₂ capture and denitrification (<10 ppm). Despite the availability of numerous methods and materials for desulfurization, the integrated capture and conversion of trace SO₂ remains challenges. Herein, we report that the layered metal-organic framework (MOF) BUT-86 captures trace (100 ppm) SO₂ from simulated flue gas to afford effluent SO₂ levels < 10 ppb. Performance is driven by exceptional SO₂/CO₂ selectivity at 80 % RH. Captured SO₂ can be subsequently removed by room temperature conversion to 2-hydroxypropane-2-sulfonic acid to regenerate BUT-86. Reactive SO₂ binding involving bisulfite formation that requires the presence of adsorbed water drives the performance of BUT-86, the first sorbent that enables integrated trace SO₂ capture and conversion from flue gas.

查看原文本刊更多论文

锆MOF捕获和转化痕量二氧化硫

传统的烟气脱硫（FGD）技术可去除烟气流中95% %的二氧化硫，但要满足当前的排放标准（≤35 ppm）以及二氧化碳捕集和脱硝等工艺要求（<10 ppm），需要进行多阶段能源密集型和产生废物的洗涤。尽管有许多方法和材料可用于脱硫，但综合捕获和转化痕量二氧化硫仍然是一个挑战。本文中，我们报告了层状金属有机框架（MOF） BUT-86从模拟烟气中捕获痕量（100 ppm） SO2，以提供排放SO2水平<； 10 ppb。在80 % RH下，卓越的SO2/CO2选择性驱动了性能。捕获的SO2随后可以通过室温转化为2-羟基丙烷-2-磺酸来去除，以再生ut -86。反应性SO2结合涉及亚硫酸盐的形成，需要吸附水的存在，这推动了BUT-86的性能，这是第一种能够从烟气中综合捕获和转化痕量SO2的吸附剂。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Materials Science and Engineering: R: Reports 工程技术-材料科学：综合

CiteScore

60.50

自引率

0.30%

发文量

审稿时长

34 days

期刊介绍： Materials Science & Engineering R: Reports is a journal that covers a wide range of topics in the field of materials science and engineering. It publishes both experimental and theoretical research papers, providing background information and critical assessments on various topics. The journal aims to publish high-quality and novel research papers and reviews. The subject areas covered by the journal include Materials Science (General), Electronic Materials, Optical Materials, and Magnetic Materials. In addition to regular issues, the journal also publishes special issues on key themes in the field of materials science, including Energy Materials, Materials for Health, Materials Discovery, Innovation for High Value Manufacturing, and Sustainable Materials development.