现代化工

现代化工 ›› 2021, Vol. 41 ›› Issue (7) : 174-178. DOI: 10.16606/j.cnki.issn0253-4320.2021.07.036

科研与开发

Mg (NO₃)₂对煤基活性炭及其催化甲烷裂解制氢的影响

罗化峰, 李通达, 乔元栋, 宁掌玄, 薄春丽

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Effect of Mg(NO₃)₂ on coal-based activated carbon and its catalytic performance in methane decomposition to hydrogen

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Received		Published
2020-08-12		2021-07-20
Issue Date	Revised Date
2021-07-14	2020-08-12

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摘要

为改善煤基活性炭（AC）催化甲烷裂解的活性和稳定性，通过在煤中原位添加Mg（NO₃）₂和KOH的方法制备出一种新型煤基活性炭（xMg-AC）。利用FT-IR、XRD、SEM等对其进行表征及分析，结果表明，煤原位添加Mg（NO₃）₂可以提高 xMg-AC表面的含氧基团浓度和炭结构的无序性。在催化甲烷裂解制氢过程中，xMg-AC较AC具有更高的转化率和更多的碳纤维，其中5Mg-AC的催化效果最佳。

Abstract

In order to improve the activity and stability of coal-based activated carbon (AC) for catalytic methane cracking,a new type of coal-based activated carbon (xMg-AC) is prepared by adding Mg(NO₃)₂ and KOH in situ to coal.FTIR,XRD,SEM and other analyses show that adding Mg(NO₃)₂ in situ to coal can increase the concentration of oxygen-containing groups on the surface of xMg-AC and the disorder of carbon structure.In the process of catalytic methane decomposition to hydrogen,xMg-AC presents higher conversion rate and more carbon fiber than AC,and 5Mg-AC has the best catalytic effect.