期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 10, 期 35, 页码 11533-11543出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.2c02973
关键词
KEYWORDS; Keggin-type tungstovanadate; ionic liquid; oxidative desulfurization; sulfone product
资金
- National Natural Science Foundation of China [21971055]
- Natural Science Foundation of Henan Province of China [212300410334]
- Foundation of the Education Department of Henan Province of China [21A150011]
A new tungstovanadate compound has been prepared and converted into an ionic liquid catalyst, which shows high efficiency in sulfur removal and sulfone product selectivity in an oxidative desulfurization system. The structure-activity relationship and desulfurization mechanism of this catalyst have been studied theoretically and experimentally.
A new tungstovanadate K-4[VW12O40].21H(2)O has been prepared by a simple method first and then isolated as [C-2(MIM)(2)]2VW(12)O(40) (VW12-IL) by cation exchange (MIM = 1-methylimidazolium). The designed VW12-IL is employed as a catalyst in an extraction coupled oxidation desulfurization system, which could reach both 100% sulfur removal efficiency and sulfone product selectivity in 20 min with a high turnover frequency value (TOF: 53.2 h(-1)). Clean fuel and sulfone products are achieved simultaneously after the reaction, accompanied by the crystallization of the sulfone product at the interface of the two phases. In addition, the structure-activity relationship of a series of Keggin polyoxometalate-based ionic liquids (VW12-IL, PV3W9-IL, PVW11-IL, and PW12- IL) and the desulfurization mechanism were proposed by density functional theory and radical quenching, respectively. This work offers a novel perspective to design the structure of the polyoxometalate catalyst and the technological process of oxidative desulfurization.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据