文献类型：期刊文献

英文题名：Boosting propane purification on Pt/ZrOSO4 nanoflowers: Insight into the roles of different sulfate species in synergy with Pt

作者：Shao, Chuntao[1];Cui, Yao[1,2];Zhang, Li[3];Tang, Jie[2];Ge, Chunliang[3];Chen, Biao[3];Wang, Li[1];Guo, Yanglong[1];Zhan, Wangcheng[1];Guo, Yun[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, Lab Res Inst Ind Catalysis, Shanghai 200237, Peoples R China;[2]Shanghai HuaYi New Mat Co Ltd, Technol Dept, 139 Pugong Rd, Shanghai 201507, Peoples R China;[3]Zhejiang Tiandi Environm Protect Technol Co Ltd, Hangzhou 311121, Zhejiang, Peoples R China

年份：2023

卷号：304

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20224312995245);WOS:【SCI-EXPANDED(收录号:WOS:000900035900003)】；

基金：This project was supported financially by National Key Research and Development Program of China (2022YFB3504200), the National Natural Science Foundation of China (U21A20326, 21976057, 21922602 and 21673072), the "Shanghai Science and Technology Innovation Plan" Program (19DZ1208000), the fund of the State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals (SKL-SPM-202018) and Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Propane combustion; Sulfates; ZrOSO4; SO3ad; Pt catalysts

摘要：Herein, ZrOSO4 nanoflowers with high sulfates content and the coexistence of (SO3)(ad) and SO42- species has been developed as the support of Pt-based catalysts for propane combustion. Compared with the Pt catalysts supported on conventional sulfated-ZrO2 and ZrO2, the Pt/ZrOSO4 gives the highest specific reaction rate of 355 mu mol g(Pt)(-1) s(-1) at 190 degrees C, the TOF value on Pt/ZrOSO4 is 2 times of that on Pt/sulfated-ZrO2 and 7 times of that on Pt/ZrO2. Different from that only SO42- on the Pt/sulfated-ZrO2, there are two sulfate species on the Pt/ZrOSO4, conventional SO42- and (SO3)(ad). The presence of sulfates not only leads to the formation of Bronsted acid sites and promotes the propane adsorption, but also significantly affects the chemical states of Pt species. The interaction between Pt and SO42- results in the formation of reactive Pt-0 species, which facilitates the C-C bond activation, and the Pt-(SO3)ad electronic interaction is beneficial for the generation of the metastable Pt+, which further promotes propane combustion via heterolytic C-H bond activation. Moreover, the Pt/ZrOSO4 also can provide active oxygen species with enhanced oxygen mobility and reactivity due to the presence of Pt-O-SO3 species, which can accelerate the oxidation of reaction intermediates. This work contributes to in-depth insight into the role of different sulfate species for propane combustion over Pt-based catalysts.