Acidic and basic groups introducing on the surface of activated carbon during the plasma-surface modification for changing of COS catalytic hydrolysis activity
Acidic and basic groups introducing on the surface of activated carbon during the plasma-surface modification for changing of COS catalytic hydrolysis activity
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DOI：
10.1016/j.catcom.2020.106093
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发表时间：
2020-09-01
影响因子：
3.7
通讯作者：
Ning, Ping
中科院分区：
文献类型：
--
作者：
Li, Kunlin;Liu, Gui;Ning, Ping
The Fe-based microwave coconut shell activated carbon (Fe/MCSAC) catalyst was surface modified by O-2- and NH3-plasma. The catalyst modified by O-2-plasma showed a lower catalytic activity than the unmodified sample, but the catalyst modified by NH3-plasma was improved dramatically. Fourier Transform Infrared Spectroscopy (FTIR) results showed that -COOH and -NH2 groups can be generated after by O-2- and NH3-plasma modification, respectively. The theoretical calculation results indicated that acidic -COOH group showed some inhibition to the hydrolysis of carbonyl sulfide (COS), but -NH2 could improve it by bonding with the H atoms of H2O.
