| 引用本文: | 杨雨鑫,吴潘,唐思扬,钟山,蒋炜,何坚,等. Cr2S3催化H2S分解制氢的活性与动力学研究[J]. 石油与天然气化工, 2024, 53(5): 17-24. |
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| 摘要: |
| 目的 将H2S分解制氢既能解决废气污染问题，又能实现其资源化的高值利用。制备中低温段高效稳定的H2S分解催化剂，掌握其催化动力学行为，有助于构建硫化学链促进的H2S高效分解的新工艺。方法 采用溶液燃烧法制备了Cr2S3催化剂，通过XRD、BET和SEM/EDS等方法表征了催化剂组成和结构，同时通过实验考查其在H2S催化分解制氢中的催化性能、稳定性以及反应动力学，并研究了制备时燃料比例对催化剂性能的影响。结果 在φ(H2S)=5%，气体空速（GHSV）=24 000 h?1的反应条件下，Cr2S3-T1.50具有最高的H2S转化率，在800 ℃时可达16.01 %，并且无其他副反应；反应动力学分析表明，Cr2S3-T1.50催化H2S分解的表观活化能为50.7 kJ/mol。结论 溶液燃烧法制备出的Cr2S3催化剂在400~800 ℃具有极好的活性和稳定性，能够极大地降低H2S分解的表观活化能。 |
| 关键词: 硫化氢（H2S） 溶液燃烧合成 硫化铬（Cr2S3） 氢气（H2） 反应动力学 |
| DOI：10.3969/j.issn.1007-3426.2024.05.003 |
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| 基金项目:四川大学?成都赛普瑞兴科技有限公司联合开发项目“甲烷催化裂解制氢和碳纳米管工艺”（20H0974） |
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| Study on activity and kinetics of H2S decomposition catalyzed by Cr2S3 for hydrogen production |
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Yuxin YANG1, Pan WU1, Siyang TANG1, Shan ZHONG1, Wei JIANG1, Jian HE1, Changjun LIU1, Bin LIANG1,2
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1.School of Chemical Engineering, Sichuan University, Chengdu, Sichuan, China;2.Institute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu, Sichuan, China
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| Abstract: |
| Objective The decomposition of hydrogen sulfide to produce hydrogen can avoid waste gas pollution and utilize the resource to a greater degree. The preparation of high-efficiency and stable H2S decomposition catalysts at medium and low temperature and the exploration of their catalytic kinetic behavior are helpful to construct a new process for the efficient decomposition of H2S promoted by the sulfur chemical chain. Methods The catalyst Cr2S3 was prepared using the solution combustion method. The composition and structure of the catalyst were characterized by XRD, BET and SEM/EDS. Additionally, its catalytic performance, stability and reaction kinetics in the catalytic decomposition of H2S for hydrogen production were investigated. This paper also studies the effect of fuel ratio on the catalyst's hydrogen production performance. Results Under the reaction conditions of φ(H2S) = 5% and GHSV = 24 000 h?1, Cr2S3-T1.50 has the highest H2S conversion rate, up to 16.01% at 800 ℃, and no other side reactions appear. The kinetic analysis of the reaction shows that the apparent activation energy of H2S decomposition catalyzed by Cr2S3-T1.50 is 50.7 kJ/mol. Conclusion The Cr2S3 catalyst prepared with the solution combustion method has excellent hydrogen production activity and stability at 400-800 ℃ and can significantly reduce the apparent activation energy of hydrogen sulfide decomposition. |
| Key words: hydrogen sulfide solution combustion synthesis chromium sulfide hydrogen reaction kinetics |
