Molybdovanadophosphoric Heteropolyacid-Catalyzed Aerobic Oxidation of Methacrolein: The Crucial Role of Ionic Liquid as a Modifier

Autor:	Yun-Li Cao, Yinge Bai, Ruiyi Yan, Lei Wang, Bao-Hua Xu
Rok vydání:	2020
Předmět:	010405 organic chemistry Methacrolein General Chemistry 010402 general chemistry 01 natural sciences Redox Catalysis 0104 chemical sciences chemistry.chemical_compound chemistry Methacrylic acid Reagent Polymer chemistry Ionic liquid Selectivity Organometallic chemistry
Zdroj:	Catalysis Letters. 150:1774-1785
ISSN:	1572-879X 1011-372X
DOI:	10.1007/s10562-019-03063-4
Popis:	[EMIM]PAV[X] (X = Ac, NO3, BF4) was synthesized by a facile method using imidazolium-based ionic liquids ([EMIM][X], X = Ac, NO3, BF4) as the modifying reagent. Characterization by FT-IR, XRD, SEM, TG/DTA, H2-TPR and XPS demonstrated that [EMIM]PAV[Ac] has uniform rod-like morphology, better redox property and higher amount of NH4+ composite, which therefore provides a high selectivity of 98% in the oxidative transformation of methacrolein (MAL) to methacrylic acid (MAA) as a catalyst. Theoretical calculations suggested the relatively strong H-bond basicity of C2−H in [EMIM][Ac] has a great positive influence on the structure and redox property of [EMIM]PAV[X] hybrids.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8c9d2ced860a35a3df4276355487efe1 https://doi.org/10.1007/s10562-019-03063-4 Zobrazit plný text záznamu Plný text ve formátu PDF