Effect of lengthening alkyl spacer on hydroformylation performance of tethered-phosphine modified Rh/SiO2 catalyst

Liu, Jia; Li, Yan; Jiang, Miao; Li, Cunyao; Ding, Yunjie

doi:10.1016/s1872-2067(15)61019-1

Cited by 8 publications

(1 citation statement)

References 20 publications

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“…Later on it was shown that the alkyl spacer lengths of the tethered-phosphine ligands influence the catalytic activity. Lengthening of the spacer lead to an enhanced activity, probably due to an improved flexibility and promotion of the formation of the active species [63].…”

Section: Supported Ligand-modified Rhodium Nanoparticlesmentioning

confidence: 99%

Current State of the Art of the Solid Rh-Based Catalyzed Hydroformylation of Short-Chain Olefins

Hanf¹,

Rupflin²,

Gläser

et al. 2020

Catalysts

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The hydroformylation of olefins is one of the most important homogeneously catalyzed processes in industry to produce bulk chemicals. Despite the high catalytic activities and selectivity’s using rhodium-based homogeneous hydroformylation catalysts, catalyst recovery and recycling from the reaction mixture remain a challenging topic on a process level. Therefore, technical solutions involving alternate approaches with heterogeneous catalysts for the conversion of olefins into aldehydes have been considered and research activities have addressed the synthesis and development of heterogeneous rhodium-based hydroformylation catalysts. Different strategies were pursued by different groups of authors, such as the deposition of molecular rhodium complexes, metallic rhodium nanoparticles and single-atom catalysts on a solid support as well as rhodium complexes present in supported liquids. An overview of the recent developments made in the area of the heterogenization of homogeneous rhodium catalysts and their application in the hydroformylation of short-chain olefins is given. A special focus is laid on the mechanistic understanding of the heterogeneously catalyzed reactions at a molecular level in order to provide a guide for the future design of rhodium-based heterogeneous hydroformylation catalysts.

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Section: Supported Ligand-modified Rhodium Nanoparticlesmentioning

confidence: 99%

Current State of the Art of the Solid Rh-Based Catalyzed Hydroformylation of Short-Chain Olefins

Hanf¹,

Rupflin²,

Gläser

et al. 2020

Catalysts

View full text Add to dashboard Cite

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The One‐pot Encapsulation of Palladium Complexes into Covalent Organic Frameworks Enables the Alkoxycarbonylation of Olefins

Yang

Guan

et al. 2021

ChemCatChem

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In this study, palladium-based heterogeneous catalysts were successfully prepared by encapsulating the palladium diphosphine complexes into an imine-linked 2D-COF (TPB-DMTP-COF) through a one pot self-assembly approach. It not only prevents the oxidation of phosphine-based ligand during the stepwise impregnation but also suppresses the coordination of imine linkers at the COF host to the palladium guest, thus enabling highly efficient encapsulation of the active bidentate phosphine chelated palladium complex by the widely explored iminelinked COF. Besides, the dosage of diphosphine ligand (Xantphos-SO 3 H, L) and the ratio of palladium to L in the preparation of [Pd]@COF hybrids can be readily adjusted under such one pot procedure to satisfy the requirement of crystallinity, porosity, active sites, and CO adsorption capacity for the catalytic performance in the methoxycarbonylation of olefins. The resultant [Pd]@COF-A-0.25-0.5 provides satisfied catalytic performance for both aliphatic and aromatic olefins with total esters up to 92.1 % under optimized conditions. These findings provide the basis for a novel design concept to design heterogeneous catalysts with high efficiency for reaction processes comprising the alkoxycarbonylation of olefins.

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A mini review on strategies for heterogenization of rhodium-based hydroformylation catalysts

Wang

et al. 2017

Front. Chem. Sci. Eng.

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Effect of lengthening alkyl spacer on hydroformylation performance of tethered-phosphine modified Rh/SiO2 catalyst

Cited by 8 publications

References 20 publications

Current State of the Art of the Solid Rh-Based Catalyzed Hydroformylation of Short-Chain Olefins

Current State of the Art of the Solid Rh-Based Catalyzed Hydroformylation of Short-Chain Olefins

The One‐pot Encapsulation of Palladium Complexes into Covalent Organic Frameworks Enables the Alkoxycarbonylation of Olefins

A mini review on strategies for heterogenization of rhodium-based hydroformylation catalysts

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