Preparation and isolation of mono-Nb substituted Keggin-type phosphomolybdic acid and its application as an oxidation catalyst for isobutylaldehyde and Wacker-type oxidation
Dalton Transactions Volume 52
Page 18168-18176
published_at 2023-11-02
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| File | |
| Title ( eng ) |
Preparation and isolation of mono-Nb substituted Keggin-type phosphomolybdic acid and its application as an oxidation catalyst for isobutylaldehyde and Wacker-type oxidation
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| Creator |
Matono Takashi
Ueno Shinsuke
Kato Yuki
Umehara Naoya
Li Yangguang
Ninomiya Wataru
Elhallal Maher
Gonzales-Yañez Edgar Osiris
Capron Mickael
Ishikawa Satoshi
Ueda Wataru
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| Source Title |
Dalton Transactions
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| Volume | 52 |
| Start Page | 18168 |
| End Page | 18176 |
| Abstract |
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.
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| Descriptions |
This work was supported by the Grant-in-Aid for Transformative Research Area (A) “Supra-ceramics” (JSPS KAKENHI Grant Number JP22H05144), JSPS Core-to-Core Program, International Associated Laboratory (LIA) “Nano oxide-based catalysts for biomass valorization (NANOXCAT)”, and International Network on Polyoxometalate Science at Hiroshima University.
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
Royal Society of Chemistry
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| Date of Issued | 2023-11-02 |
| Rights |
This is an accepted manuscript of the paper which has been published in final form at https://doi.org/10.1039/D3DT02451B
This is not the published version. Please cite only the published version.
この論文は出版社版ではありません。引用の際には出版社版をご確認、ご利用ください。
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| Publish Type | Accepted Manuscript |
| Access Rights | open access |
| Source Identifier |
[DOI] https://doi.org/10.1039/D3DT02451B
isVersionOf
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| 助成機関名 |
日本学術振興会
Japan Society for the Promotion of Science
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| 助成機関識別子 |
[Crossref Funder] https://doi.org/10.13039/501100001691
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| 研究課題名 |
超セラミックスの次元・形態制御
Controls of Structural dimensionality and Crystal morphology of Supra-ceramics
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| 研究課題番号 |
JP22H05144
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