Polyethylene Glycol–Bridged Diimidazolium Polyoxometalates: Thermoregulated Reusable Catalysts for Selective Oxidation of Toluene to Benzaldehyde DOI Open Access

Shu Qian,

Fengli Yu,

Yexin Luo

et al.

Applied Organometallic Chemistry, Journal Year: 2024, Volume and Issue: 39(1)

Published: Dec. 10, 2024

ABSTRACT The oxidation of toluene to benzaldehyde holds great industrial significance, and it typically involves toxic reagents and/or affords difficult‐to‐separate product mixtures. Herein, polyethylene glycol (PEG)–bridged diimidazolium polyoxometalates (POMs) with a Keggin‐type tungstovanadophosphoric heteropolyacid anion various PEG‐functionalized cations were prepared evaluated as catalysts for the eco‐friendly using aqueous tert ‐butyl hydroperoxide in acetonitrile. bridging by PEG enabled fine‐tuning heteropolyanion redox properties increased catalyst reactivity solubility reaction system. best‐performing POM exhibited thermoregulated phase‐separation behavior, that is, was fully soluble medium at elevated temperatures hardly room temperature. Further, showed almost no performance deterioration after sevenfold reuse achieved an acceptable conversion (82%) selectivity (68%). Thus, our work enables development processes catalytic industrially relevant hydrocarbon thus facilitates establishment more sustainable society.

Language: Английский

Efficient catalytic epoxidation of olefins over V-substituted Keggin-type polyoxometalate hybrids DOI
Yifei Liu, Xue Bai, Yixuan Zhang

et al.

Inorganic Chemistry Communications, Journal Year: 2025, Volume and Issue: unknown, P. 114172 - 114172

Published: Feb. 1, 2025

Language: Английский

Citations

1
Dispersing VO2 on Fe2O3 for direct hydroxylation of benzene to phenol DOI

Yangzhou Deng,

Yuqi Zhang,

K. Wei

et al.

Molecular Catalysis, Journal Year: 2025, Volume and Issue: 573, P. 114837 - 114837

Published: Jan. 11, 2025

Language: Английский

Citations

0
Efficient Electrocatalytic Conversion of Nitrate in Water with Anderson-Type Polyoxometalate-Modified Co-MOF DOI

Qingyu Zhou,

Xinming Wang, Shuang Rong

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

The electrochemical conversion of nitrate to ammonia has garnered growing attention, as it aims reduce carbon emissions and promote environmental sustainability. Nevertheless, developing an electrocatalyst that exhibits outstanding activity, selectivity, stability is still a significant challenge. Here, we report three Anderson-type polyoxometalates (POMs)-modified cobalt metal-organic framework (Co-MOF), namely, Co-MOF/MMo6 (M = Fe, Co, Ni) composite electrocatalyst, fabricated using easy standing method. Among them, POMs not only facilitated the formation lamellar structures with high specific surface area Co-MOF morphology regulator but also contributed electron transfer between electron-rich cluster, achieving enhancement in catalytic performance NO3RR NH3. In particular, Co-MOF/NiMo6 maximal Faradaic efficiency 98.2% at -0.8 V vs reverse hydrogen electrode (vs reversible (RHE)) NH3 yield rate up 10.88 mg h-1 mgcat.-1, better than most previously reported MOF-based catalysts. By situ spectrometric measurement, demonstrate via kinetically favored pathway NO3- → *NO3 *NO2 *NO *NH2OH *NH3. This work indicates considerable potential POM-based MOF materials for

Language: Английский

Citations

0
Bisphosphonate-modified Boat-shaped Polyoxoniobates for Efficient Catalysis of Knoevenagel Condensation DOI
Xueyu Zhang, Yanru Li,

Li‐Hao Hong

et al.

Journal of Solid State Chemistry, Journal Year: 2025, Volume and Issue: unknown, P. 125304 - 125304

Published: March 1, 2025

Language: Английский

Citations

0
Electrochemical Detection of Chloramphenicol with Different Modified Electrodes Based on the Metal-Cyclotriveratrylene Framework and Mesoporous Carbon DOI
Yuying Li,

Xia Niu,

Wen-Yuan Pei

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 4, 2025

Design of high-performance electrochemical sensors for detection antibiotics is greatly desirable human health and ecological safety. Herein, a new metal-organic framework (MOF), namely, [Zn2L(PDC)2(H2O)2]·3H2O (1), was synthesized with isophthalic acid (H2PDC), Zn(II) cation, cyclotriveratrylene-based ligand (L). By mechanical milling, 1 incorporated mesoporous carbon (MC) to produce 1@MC. Subsequently, 1@MC decorated on different bare electrodes (glass (GC), Au, Pt, or W electrode). The introduction MC significantly improved the conductivity current response intensity determination chloramphenicol (CAP). Among these sensors, responses CAP 1@MC(1:2)/GCE 1@MC(1:2)/Au were more intense. Markedly, they exhibited relatively wide linear ranges (0.5-400 μM 1-400 1@MC(1:2)/Au) low limits (0.15 0.48 1@MC(1:2)/Au). Particularly, can be used measurement in eye drop milk sample fine recoveries.

Language: Английский

Citations

0
Catalytic performance of a copper coordination polymer in the oxidation of styrene: Insights into immobilization and thermal transformation DOI
Zohreh Razmara

Inorganic Chemistry Communications, Journal Year: 2025, Volume and Issue: unknown, P. 114590 - 114590

Published: April 1, 2025

Language: Английский

Citations

0
Polyoxometalate-encapsulated copper-organic complexes for efficient C-H bond oxidation of alkylbenzenes DOI
Shuai Li, Qing Han, Yuan‐Yuan Ma

et al.

Journal of Molecular Structure, Journal Year: 2025, Volume and Issue: unknown, P. 142686 - 142686

Published: May 1, 2025

Language: Английский

Citations

0
Polyethylene Glycol–Bridged Diimidazolium Polyoxometalates: Thermoregulated Reusable Catalysts for Selective Oxidation of Toluene to Benzaldehyde DOI Open Access

Shu Qian,

Fengli Yu,

Yexin Luo

et al.

Applied Organometallic Chemistry, Journal Year: 2024, Volume and Issue: 39(1)

Published: Dec. 10, 2024

ABSTRACT The oxidation of toluene to benzaldehyde holds great industrial significance, and it typically involves toxic reagents and/or affords difficult‐to‐separate product mixtures. Herein, polyethylene glycol (PEG)–bridged diimidazolium polyoxometalates (POMs) with a Keggin‐type tungstovanadophosphoric heteropolyacid anion various PEG‐functionalized cations were prepared evaluated as catalysts for the eco‐friendly using aqueous tert ‐butyl hydroperoxide in acetonitrile. bridging by PEG enabled fine‐tuning heteropolyanion redox properties increased catalyst reactivity solubility reaction system. best‐performing POM exhibited thermoregulated phase‐separation behavior, that is, was fully soluble medium at elevated temperatures hardly room temperature. Further, showed almost no performance deterioration after sevenfold reuse achieved an acceptable conversion (82%) selectivity (68%). Thus, our work enables development processes catalytic industrially relevant hydrocarbon thus facilitates establishment more sustainable society.

Language: Английский

Citations

0