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Sm-Ce-O@ZrO催化剂上高炉煤气中羰基硫的催化水解

Catalytic hydrolysis of carbonyl sulfide in blast furnace gas over Sm-Ce-O@ZrO catalyst.

作者信息

Yu Jintao, Lu Yao, Wang Sheng, Xu Mutao, Jin Qijie, Zhu Chengzhang, Chen Jisai, Xu Haitao

机构信息

School of Environmental Science and Engineering, Nanjing Tech University Nanjing 210009 PR China

Shanghai Institute of Chemical Industry Environmental Engineering Co. Ltd Shanghai 200333 PR China.

出版信息

RSC Adv. 2024 Jan 19;14(5):3135-3145. doi: 10.1039/d3ra06833a. eCollection 2024 Jan 17.

DOI:10.1039/d3ra06833a
PMID:38249668
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10797331/
Abstract

Carbonyl sulfur (COS) is a prominent organic sulfur pollutant commonly found in the by-product gas generated by the steel industry. A series of Sm-doped CeO@ZrO catalysts were prepared for the hydrolysis catalytic removal of COS. The results showed that the addition of Sm resulted in the most significant enhancement of hydrolysis catalytic activity. The 3% SmO-Ce-O@ZrO catalyst exhibited the highest activity, achieving a hydrolysis catalytic efficiency of 100% and HS selectivity of 100% within the temperature range of 90-180 °C. The inclusion of Sm had the effect of reducing the acidity of the catalyst while increasing weak basic sites, which facilitated the adsorption and activation of COS molecules at low temperatures. Appropriate doping of Sm proved beneficial in converting active surface chemisorbed oxygen into lattice oxygen, thereby decreasing the oxidation of intermediate products and maintaining the stability of the hydrolysis reaction.

摘要

羰基硫（COS）是一种常见的有机硫污染物，通常存在于钢铁行业产生的副产物气体中。制备了一系列Sm掺杂的CeO@ZrO催化剂用于水解催化去除COS。结果表明，Sm的添加导致水解催化活性增强最为显著。3% SmO-Ce-O@ZrO催化剂表现出最高的活性，在90-180℃温度范围内实现了100%的水解催化效率和100%的HS选择性。Sm的加入降低了催化剂的酸度，同时增加了弱碱性位点，有利于COS分子在低温下的吸附和活化。适量掺杂Sm有利于将活性表面化学吸附氧转化为晶格氧，从而减少中间产物的氧化并维持水解反应的稳定性。

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本文引用的文献

1
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Chemosphere. 2022 Nov;307(Pt 4):136090. doi: 10.1016/j.chemosphere.2022.136090. Epub 2022 Aug 19.
2
Promoting effect of Fe/La loading on γ-AlO catalyst for hydrolysis of carbonyl sulfur.铁/镧负载对γ - 氧化铝催化剂催化羰基硫水解的促进作用。
Environ Sci Pollut Res Int. 2022 Dec;29(56):84166-84179. doi: 10.1007/s11356-022-20928-1. Epub 2022 Jul 1.
3
The catalytic mechanism of intercalated chlorine anions as active basic sites in MgAl-layered double hydroxide for carbonyl sulfide hydrolysis.
插层氯阴离子作为 MgAl 层状双氢氧化物中羰基硫化水解活性碱性位的催化机理。
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Boosting carbonyl sulfide catalytic hydrolysis performance over N-doped Mg-Al oxide derived from MgAl-layered double hydroxide.促进 N 掺杂 Mg-Al 氧化物的羰基硫催化水解性能，该氧化物源自 MgAl 层状双氢氧化物。
J Hazard Mater. 2021 Apr 5;407:124546. doi: 10.1016/j.jhazmat.2020.124546. Epub 2020 Dec 7.
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Carbonyl sulfide derived from catalytic oxidation of carbon disulfide over atmospheric particles.二硫化碳在大气颗粒物上催化氧化生成的羰基硫。
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