Chemical Stability of MIL-101(Cr) upon Adsorption of SO2 and NO2 under Dry and Humid Conditions

被引：12
作者：
Carter, Eli A. [1 ]
Hungerford, Julian T. [1 ]
Joshi, Jayraj N. [1 ]
DeWitt, Stephen J. A. [1 ]
Jiang, Xiao [1 ]
Marszalek, Bartosz [1 ]
Lively, Ryan P. [1 ]
Walton, Krista S. [1 ]
机构：
[1] Georgia Inst Technol, Sch Chem & Biomol Engn, Atlanta, GA 30332 USA
来源：
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2023年 / 62卷 / 22期
关键词：
METAL-ORGANIC FRAMEWORKS; ZEOLITIC IMIDAZOLATE FRAMEWORKS; ACID GASES; SEPARATION; WATER; SITES;
D O I：
10.1021/acs.iecr.3c00209
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A detailed understanding of the chemical stability ofmetal-organicframeworks (MOFs) in water and acidic and basic solutions currentlyexists; however, there has been comparatively little investigationinto the chemical stability of MOFs in the presence of acid gas speciesthat may be present in industrial settings. MIL-101-(Cr), a MOF thatis stable in liquid water as well as acidic and basic solutions, wastested for its stability upon exposure to the acid gases sulfur dioxide(SO2) and nitrogen dioxide (NO2). Successivebreakthrough experiments of both SO2 and NO2 show that both gases lower the adsorption capacity of MIL-101-(Cr),which is also observed by N-2 physisorption experiments.X-ray photoelectron spectroscopy (XPS) confirms the presence of sulfurand nitrogen species in MIL-101-(Cr) after exposure to SO2 and NO2 species. In situ infrared spectroscopyexperiments suggest that adsorption of SO2 in MIL-101-(Cr)is not completely reversible and that adsorption of NO2 in MIL-101-(Cr) causes some structural degradation similar to whathas been previously observed in HKUST-1.
引用
收藏
页码：8864 / 8872
页数：9
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