Cr2S3催化H2S分解制氢的活性与动力学研究

被引：0

作者：

杨雨鑫 ^{[1
]}

吴潘 ^{[1
]}

唐思扬 ^{[1
]}

钟山 ^{[1
]}

蒋炜 ^{[1
]}

何坚 ^{[1
]}

刘长军 ^{[1
]}

梁斌 ^{[1
,2
]}

机构：

[1] 四川大学化学工程学院

[2] 四川大学新能源与低碳技术研究院

来源：

石油与天然气化工 | 2024年 / 53卷 / 05期

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;

D O I：

暂无

中图分类号：

TQ116.2 [氢气]; TQ426 [催化剂（触媒）];

学科分类号：

0817 ; 080502 ; 081705 ;

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。

引用

页码：17 / 24

页数：8

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