期刊
CATALYSIS COMMUNICATIONS
卷 144, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.catcom.2020.106093
关键词
Plasma-surface modification; Acidic and basic groups; Carbonyl sulfide; Catalytic hydrolysis; Fe/MCSAC catalyst
资金
- National Natural Science Foundation of China [21667015, 51408282, 21367016]
- National Key R&D Program of China [2018YFC0213400, 2019YFC1904100]
- Science and Technology Program of Yunnan province [2019FB069]
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.
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