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Pt nanoparticles encapsulated on V2O5 nanosheets carriers as efficient catalysts for promoted aerobic oxidative desulfurization performance
Chinese Journal of Catalysis ( IF 15.7 ) Pub Date : 2021-04-01 , DOI: 10.1016/s1872-2067(20)63685-3
Chao Wang , Wei Jiang , Hanxiang Chen , Linhua Zhu , Jing Luo , Wenshu Yang , Guangying Chen , Zhigang Chen , Wenshuai Zhu , Huaming Li

Abstract Platinum group metals (PGMs) usually exhibit promising aerobic catalytic abilities, providing a green and feasible oxidative desulfurization method. However, often, the PGM nanoparticles (NPs) get leached, and the catalysts are deactivated. In this work, Pt NPs with particle sizes of approximately 4–5 nm were encapsulated effectively and uniformly on the surface of vanadium pentoxide (V2O5) nanosheets (with thicknesses of approximately six atomic layers) through strong metal-support interactions. The synthesized catalysts promote catalytic aerobic oxidation reactions, realizing deep desulfurization (99.1%, l 5 μg g−1) under atmospheric pressure and 110 dC reaction temperature. Remarkable degrees of sulfur removal could be achieved for oils with different initial S-concentrations and substrates. Additionally, the as-prepared catalysts could be recycled for reuse at least seven times.

中文翻译:

封装在 V2O5 纳米片载体上的 Pt 纳米颗粒作为促进有氧氧化脱硫性能的有效催化剂

摘要 铂族金属(PGMs)通常表现出良好的好氧催化能力,提供了一种绿色可行的氧化脱硫方法。然而,通常情况下,PGM 纳米粒子 (NP) 会被浸出,并且催化剂会失活。在这项工作中,粒径约为 4-5 nm 的 Pt NPs 通过强金属-载体相互作用被有效且均匀地包封在五氧化二钒 (V2O5) 纳米片(厚度约为六个原子层)的表面上。合成的催化剂促进催化好氧氧化反应,在常压和110 dC反应温度下实现深度脱硫(99.1%,l 5 μg g-1)。对于具有不同初始硫浓度和底物的油,可以实现显着程度的硫去除。此外,
更新日期:2021-04-01
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