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Highly efficient hydrodesulfurization driven by an in-situ reconstruction of ammonium/amine intercalated MoS2 catalysts
iScience ( IF 4.6 ) Pub Date : 2024-04-26 , DOI: 10.1016/j.isci.2024.109824
Tianlan Yan 1 , Yingshuai Jia 1 , Kaige Hou 1 , Zhuxin Gui 1 , Wenbiao Zhang 1, 2 , Ke Du 1 , Di Pan 1 , He Li 1 , Yanghao Shi 2 , Lu Qi 3 , Qingsheng Gao 2 , Yahong Zhang 1 , Yi Tang 1
Affiliation  

Hydrodesulfurization (HDS) is a commonly used route for producing clean fuels in modern refinery. Herein, ammonium/amine-intercalated MoS2 catalysts with various content of 1T phase and S vacancies have been successfully synthesized. Along with the increment of 1T phase and S vacancies of MoS2, the initial reaction rate of the HDS of dibenzothiophene (DBT) can be improved from 0.09 to 0.55 μmol·gcat−1·s−1, accounting for a remarkable activity compared to the-state-of-the-art catalysts. In a combinatory study via the activity evaluation and catalysts characterization, we found that the intercalation species of MoS2 played a key role in generating more 1T phase and S vacancies through the ‘intercalation-deintercalation’ processes, and the hydrogenation and desulfurization of HDS can be significantly promoted by 1T phase and S vacancies on MoS2, respectively. This study provides a practically meaningful guidance for developing more advanced HDS catalysts by the intercalated MoS2-derived materials with an in-depth understanding of structure-function relationships.

中文翻译:


由铵/胺嵌入 MoS2 催化剂的原位重构驱动的高效加氢脱硫



加氢脱硫 (HDS) 是现代炼油厂生产清洁燃料的常用路线。在此,已成功合成了具有不同含量的 1T 相和 S 空位的铵/胺插层 MoS2 催化剂。随着 MoS2 的 1T 相和 S 空位的增加,二苯并噻吩 (DBT) 的 HDS 的初始反应速率可以从 0.09 提高到 0.55 μmol·gcat−1·s−1,与最先进的催化剂相比具有显着的活性。在通过活性评估和催化剂表征的组合研究中,我们发现 MoS2 的插层种类在通过“插层-脱嵌”过程产生更多的 1T 相和 S 空位中起关键作用,并且 MoS2 上的 1T 相和 S 空位可以分别显着促进 HDS 的加氢和脱硫。本研究为利用插层 MoS2 衍生材料开发更先进的 HDS 催化剂提供了具有实际意义的指导,并深入了解结构-功能关系。
更新日期:2024-04-26
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