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

Yun Li Cao; Lei Wang; Yin Ge Bai; Rui Yi Yan; Bao Hua Xu

doi:10.1007/s10562-019-03063-4

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

Yun Li Cao, Lei Wang, Yin Ge Bai, Rui Yi Yan, Bao Hua Xu^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

[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. Graphic Abstract: [Figure not available: see fulltext.]

Original language	English
Pages (from-to)	1774-1785
Number of pages	12
Journal	Catalysis Letters
Volume	150
Issue number	6
DOIs	https://doi.org/10.1007/s10562-019-03063-4
Publication status	Published - 1 Jun 2020
Externally published	Yes

Keywords

Heteropolyacid
Ionic liquid
Methacrolein
Methacrylic acid
Oxidation

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@article{ddd040f971a74520a6fe3791f0e3bf85,

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

abstract = "[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. Graphic Abstract: [Figure not available: see fulltext.]",

keywords = "Heteropolyacid, Ionic liquid, Methacrolein, Methacrylic acid, Oxidation",

author = "Cao, {Yun Li} and Lei Wang and Bai, {Yin Ge} and Yan, {Rui Yi} and Xu, {Bao Hua}",

note = "Publisher Copyright: {\textcopyright} 2020, Springer Science+Business Media, LLC, part of Springer Nature.",

year = "2020",

month = jun,

day = "1",

doi = "10.1007/s10562-019-03063-4",

language = "English",

volume = "150",

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TY - JOUR

T1 - Molybdovanadophosphoric Heteropolyacid-Catalyzed Aerobic Oxidation of Methacrolein

T2 - The Crucial Role of Ionic Liquid as a Modifier

AU - Cao, Yun Li

AU - Wang, Lei

AU - Bai, Yin Ge

AU - Yan, Rui Yi

AU - Xu, Bao Hua

PY - 2020/6/1

Y1 - 2020/6/1

N2 - [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. Graphic Abstract: [Figure not available: see fulltext.]

AB - [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. Graphic Abstract: [Figure not available: see fulltext.]

KW - Heteropolyacid

KW - Ionic liquid

KW - Methacrolein

KW - Methacrylic acid

KW - Oxidation

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U2 - 10.1007/s10562-019-03063-4

DO - 10.1007/s10562-019-03063-4

M3 - Article

AN - SCOPUS:85077564547

SN - 1011-372X

VL - 150

SP - 1774

EP - 1785

JO - Catalysis Letters

JF - Catalysis Letters

IS - 6

ER -

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

Abstract

Keywords

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