Efficient and stable dehydrogenation of methylcyclohexane over Pt supported on mesoporous alumina with excellent textural properties

被引:0
作者
Li, Changxu [1 ]
Yan, Beibei [2 ]
Pan, Dahai [1 ]
Yu, Feng [2 ]
Yan, Xiaoliang [2 ]
Chen, Shuwei [1 ]
Fan, Binbin [2 ]
Li, Ruifeng [2 ]
机构
[1] Taiyuan Univ Technol, Coll Chem, Taiyuan 030024, Shanxi, Peoples R China
[2] Taiyuan Univ Technol, Coll Chem Engn & Technol, Taiyuan 030024, Shanxi, Peoples R China
基金
中国国家自然科学基金;
关键词
Liquid organic hydrogen carriers; MCH dehydrogenation; Pt -based catalyst; Mesoporous alumina; Textural properties; ORGANIC HYDROGEN CARRIERS; CATALYSTS; STORAGE;
D O I
10.1016/j.ijhydene.2024.06.101
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Mesoporous alumina (MA) materials with outstanding textural properties have been synthesized by a facile approach, and were evaluated as supports of Pt -based catalyst for methylcyclohexane dehydrogenation. At 300 degrees C, the resultant catalyst demonstrates a much higher activity with a maximum hydrogen evolution rate of 2081 mmol/gPt/min in comparison with the state-of-the-art alumina supported Pt catalysts. Interestingly, even after a long-time reaction of 100 h or regeneration, more than 80% of original activity was still maintained. The superior catalytic performance of the obtained catalyst is associated with the high specific surface area and large mesoporous size of support MA, thus benefiting the increase in the number of Pt active sites and efficiently inhibiting the formation of coke deposition during the reaction. Our contribution has provided a rational design strategy for highly efficient and stable dehydrogenation catalysts, which is a key for the utilization of methylcyclohexane-toluene system in hydrogen storage technology.
引用
收藏
页码:297 / 306
页数:10
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