Preparation and H2S removal properties of ACF adsorbent supported by MOFs

被引：0

作者：

Zhang, Duo ^{[1
,2
]}

Sun, Yi ^{[1
,2
]}

Wen, Hu ^{[1
,2
]}

Zhao, Sichen ^{[1
,2
]}

Zhai, Xiaowei ^{[1
,2
]}

Liu, Xuexue ^{[1
,2
]}

机构：

[1] College of Safety Science and Engineering, Xi'an University of Science and Technology, Shaanxi, Xi'an

[2] Key Laboratory of Western Mine and Hazard Prevention, Ministry of Education, Xi'an University of Science and Technology, Shaanxi, Xi'an

来源：

Jingxi Huagong/Fine Chemicals | 2024年 / 41卷 / 08期

关键词：

activated carbon fiber; adsorption; coal gasification; desulfurizer; functional materials; H[!sub]2[!/sub]S; MOF-199;

D O I：

10.13550/j.jxhg.20230753

中图分类号：

学科分类号：

摘要：

MOF-199@ACF adsorbent was prepared by loading activated carbon fiber (ACF) onto MOF-199 metal-organic frame material under hydrothermal conditions, characterized by nitrogen adsorption/desorption, XRD, EDS, SEM and XPS, and evaluated for its H2S removal performance by a fixed bed reaction device. The effects of ACF loading capacity, adsorption temperature and relative humidity on the H2S removal performance of MOF-199@ACF were investigated, the possible reaction mechanism was also explored. The results showed that compared with those of MOF-199, the H2S emergence time of MOF-199@1% ACF was delayed to 405 min from 180 min, and the sulfur penetration capacity was increased from 7.2 mg/g to 14.5 mg/g. ACF with loading of 1% did not interfere with the stable crystallization structure of MOF-199, but roughened the MOF-199@1% ACF surface inducing more adsorption sites exposed and increasing the specific surface area (from 1108.6 m2/g of MOF-199 to 1978.3 m2/g). Adsorption by MOF-199@1% ACF was dominated by chemically activated adsorption, with adsorption rate increasing with temperature rise (30~70 ℃). Meanwhile, a moderate amount of water vapor (relative humidity 10%) could help to improve performance (penetration sulfur capacity 14.8 mg/g). © 2024 Fine Chemicals. All rights reserved.

引用

页码：1710 / 1717and1773

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