Preparation and isolation of mono-Nb substituted Keggin-type phosphomolybdic acid and its application as an oxidation catalyst for isobutylaldehyde and Wacker-type oxidation

被引：0

作者：

Matono, Takashi ^{[1
]}

Ueno, Shinsuke ^{[1
]}

Kato, Yuki ^{[2
]}

Umehara, Naoya ^{[1
]}

Lang, Zhongling ^{[3
]}

Li, Yangguang ^{[3
]}

Ninomiya, Wataru ^{[2
]}

Elhallal, Maher ^{[4
]}

Gonzales-Yanez, Edgar Osiris ^{[4
]}

Capron, Mickael ^{[4
]}

Ishikawa, Satoshi ^{[5
]}

Ueda, Wataru ^{[5
]}

Sano, Tsuneji ^{[1
]}

Sadakane, Masahiro ^{[1
]}

机构：

[1] Hiroshima Univ, Grad Sch Adv Sci & Engn, Dept Appl Chem, 1-4-1 Kagamiyama, Hiroshima 7398527, Japan

[2] Mitsubishi Chem Corp, MMA R&D Ctr, 20-1 Miyuki Cho, Hiroshima 7390693, Japan

[3] Northeast Normal Univ, Fac Chem, Key Lab Polyoxometalate & Reticular Mat Chem, Minist Educ, Changchun 130024, Peoples R China

[4] Univ Artois, Univ Lille, CNRS, UMR 8181,UCCS Unite Catalyse & Chim Solide,Cent Li, F-59000 Lille, France

[5] Kanagawa Univ, Fac Engn, Dept Mat & Life Chem, 3-27 Rokkakubashi,Kanagawa Ku, Yokohama, 2218686, Japan

来源：

DALTON TRANSACTIONS | 2023年 / 52卷 / 48期

关键词：

SUBSTRATE-VERSATILE CATALYST; ICP-AES TECHNIQUE; SELECTIVE OXIDATION; AEROBIC OXIDATION; LIGHT ALKANES; METAL; TRANSFORMATION;

D O I：

10.1039/d3dt02451b

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The potassium and proton mixed salt of mono-Nb substituted Keggin-type phosphomolybdate, KH3[PMo11NbO40], was isolated in a pure form by reacting Keggin-type phosphomolybdic acid (H3[PMo12O40]) and potassium hexaniobate (K8Nb6O19) in water, followed by freeze-drying. The all protonic form, H4[PMo11NbO40], was isolated via proton exchange with H-resin and subsequent freeze-drying. The most crucial factor to isolate KH3[PMo11NbO40] and H4[PMo11NbO40] in pure forms is the evaporation of water using the freeze-drying method. Using a similar procedure, the potassium salt of the di-Nb substituted compound K5[PMo10Nb2O40] was isolated. H4[PMo11NbO40] exhibited high catalytic activity for oxidizing isobutylaldehyde to methacrolein and moderate catalytic activity for the Wacker-type oxidation of allyl phenyl ether when combined with Pd(OAc)2. Keggin-type mono-Nb substituted phosphomolybdic acid, H4PMo11NbO40, was prepared in a pure form.

引用

页码：18168 / 18176

页数：10

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