文献类型：期刊文献

英文题名：Engineering the surface hydrophobicity of Au/TS-1 catalyst to promote the selective oxidation of propane

作者：Zhong, Yuxia[1];Zhang, Zhihua[1];Zhang, Min[2];Liao, Yujie[1];Shi, Shudong[1];Chen, Wenyao[1];Wang, Liang[2];Zhou, Xinggui[1];Duan, Xuezhi[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn & Low Carbon Technol, Shanghai 200237, Peoples R China;[2]Zhejiang Univ, Coll Chem & Biol Engn, Key Lab Biomass Chem Engn, Minist Educ, Hangzhou 310027, Peoples R China

年份：2025

卷号：317

外文期刊名：CHEMICAL ENGINEERING SCIENCE

收录：;EI(收录号：20252718702384);WOS:【SCI-EXPANDED(收录号:WOS:001530626500001)】；

基金：This work was financially supported by the National Key R&D Program of China (2024YFA1510302, 2021YFA1501403) , the Natural Science Foundation of China (22478107, 22038003, 22208093, 22178100, 22178101, and U22B20141) , the Shanghai Pilot Program for Basic Research (22TQ1400100-15) , the Shanghai Rising-Star Program (24QA2701900) , the Innovation Program of Shanghai Municipal Education Commission, the Shanghai Science and Technology Innovation Action Plan (22JC1403800) .

语种：英文

外文关键词：Selective oxidation; Propane; Hydrophobic; Alkylation; Product distribution

摘要：The selective oxidation of alkanes is challenging due to the inertness of C-H bonds and the tendency for overoxidation to COx. Metal-zeolite catalysts offer a promising solution by spatially decoupling oxygen and C-H bond activation on distinct active sites. This study introduces a strategy using surface hydrophobic modification of titanium silicalite-1 (TS-1) zeolites to achieve high selectivity in propane oxidation to acetone. Hydrophobic organosilanes with methyl groups were applied via a one-step co-condensation process, followed by Au nanoparticle immobilization. The hydrophobic groups prolong the residence time of the intermediate isopropanol on the catalyst surface, enhancing its conversion to acetone while stabilizing H2O2 to prevent excessive oxidation of carbon-containing species into CO2 during the process. The modified TS-1 demonstrated excellent thermal stability and selectivity, particularly under extreme hydrogen-to-oxygen ratios conditions. The alkylated Au/TS-1 catalysts significantly improved acetone production, providing a new pathway for selective alkane oxidation.