Catalytic Oppenauer oxidation of secondary alcohols over post-synthesized Sn-Beta

You, Xiao‐Zeng; Xu, Yongming; Lu, Tianliang; Tang, Ning; Luo, Wenhao; Yang, Xiaomei; Liu, Zhongyi

doi:10.1039/d3cy00185g

Catal. Sci. Technol.

2023

DOI: 10.1039/d3cy00185g

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Catalytic Oppenauer oxidation of secondary alcohols over post-synthesized Sn-Beta

Xiao‐Zeng You

Yongming Xu

Tianliang Lu

et al.

Abstract: We have developed post-synthesized Sn-Beta for Oppenauer oxidation. Quantitative structure–performance correlation reveals that open framework Sn sites are the intrinsic active sites, affording a much higher efficiency than other Sn counterparts.

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2024

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Cited by 2 publications

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The ‘Open’ Site of Lewis Acid Zeolites for Meerwein‐Ponndorf‐Verley‐Oppenauer Reactions in Biomass Catalysis

Wu,

Liu,

Guo

et al. 2024

ChemCatChem

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Heteroatom zeolites are efficient catalysts for activating oxygenates in Meerwein‐Ponndorf‐Verley‐Oppenauer (MPVO) reactions, due to the unique Lewis acid character of their tetrahedral heteroatom metal sites. Such Lewis acid zeolites, especially heteroatom Beta zeolites, are intensively investigated with increasing attention in the valorization of biomass‐derived oxygenates. Herein, we first briefly review the recent development and advantage of Lewis acid zeolites for MPVO reactions involved in biomass valorization, majorly based on the selected case studies of the most representative heteroatom Beta zeolites. Increasing recognization of the open framework sites as the intrinsic active sites for Lewis acid zeolites in MPVO reactions has been discussed, with static and dynamic viewpoints. Furthermore, the recent progress on the development of characterization technologies applied in recent the state‐of‐the‐art showcases of identification and quantification of open sites, has been assessed, with a special focus on indirect detection using probe molecules and direct detection approaches. Future opportunities and challenges regarding the development of complimentary in situ characterization technologies and in‐depth understanding of the true nature of active sites and correlative mechanisms are examined for the ultimate goal of providing stable MPVO catalysts in biomass valorization.

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The ‘Open’ Site of Lewis Acid Zeolites for Meerwein‐Ponndorf‐Verley‐Oppenauer Reactions in Biomass Catalysis

Wu,

Liu,

Guo

et al. 2024

ChemCatChem

View full text Add to dashboard Cite

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Facile Synthesis of Silanol Group Rich Sn‐Beta for Highly Efficient Isomerization of Glucose to Fructose

Li,

Lu,

Zhou

et al. 2024

ChemNanoMat

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The isomerization of glucose to fructose is an important process in the conversion of biomass into valuable fuels and chemicals. Development of efficient catalyst for this reaction has attracted much attention. In this study, Sn‐Beta zeolites with rich silanols were synthesized for glucose isomerization by solid‐state ion‐exchange method, where Si‐Beta zeolites with different amounts of silanols were applied as the precursors. It is confirmed that open Sn sites show much higher catalytic performance than closed Sn sites for glucose isomerization (about 2.1 times). The silanol amount in Si‐Beta not only affects the formation of framework Sn sites in Sn‐Beta but also influences the isomerization reaction. More silanols in the catalyst can promote the 1,2‐H shift in isomerization and reduce the side reactions of formation of mannose and C3 products. Over 3Sn‐Beta‐3h with rich silanols, 64% of fructose yield was obtained. Furthermore, the prepared Sn‐Beta catalyst is stable and recyclable. High fructose yield and facile synthesis method of Sn‐Beta reported in this work will contribute to the development of biomass and sugar industry.

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Catalytic Oppenauer oxidation of secondary alcohols over post-synthesized Sn-Beta

Abstract: We have developed post-synthesized Sn-Beta for Oppenauer oxidation. Quantitative structure–performance correlation reveals that open framework Sn sites are the intrinsic active sites, affording a much higher efficiency than other Sn counterparts.

Cited by 2 publications

References 41 publications

The ‘Open’ Site of Lewis Acid Zeolites for Meerwein‐Ponndorf‐Verley‐Oppenauer Reactions in Biomass Catalysis

The ‘Open’ Site of Lewis Acid Zeolites for Meerwein‐Ponndorf‐Verley‐Oppenauer Reactions in Biomass Catalysis

Facile Synthesis of Silanol Group Rich Sn‐Beta for Highly Efficient Isomerization of Glucose to Fructose

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