Pillared Sn‐MWW Prepared by a Solid‐State‐Exchange Method and its Use as a Lewis Acid Catalyst

Ren, Limin; Guo, Qiang; Orazov, Marat; Xu, Dandan; Politi, Dorothea; Kumar, Prashant; Alhassan, Saeed M.; Mkhoyan, K. Andre; Sidiras, D.K.; Davis, Mark E.

doi:10.1002/cctc.201600120

Cited by 47 publications

(49 citation statements)

References 58 publications

(29 reference statements)

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“…The ability to tune their composition also provides opportunities in heterogeneous catalysis, especially when bifunctional catalysts are desirable, such as in the catalysis of tandem reactions . One such reaction is the isomerization of glucose to fructose in the presence of alcohols . First proposed by Saravanamurugan et al., it has been shown to be a high‐yield route to fructose and a promising alternative to aqueous routes.…”

Section: Methodsmentioning

confidence: 99%

A Chromium Hydroxide/MIL‐101(Cr) MOF Composite Catalyst and Its Use for the Selective Isomerization of Glucose to Fructose

et al. 2018

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Ametal-organic framework (MOF)-based catalyst, chromium hydroxide/MIL-101(Cr), was prepared by aone-pot synthesis method. The combination of chromium hydroxide particles on and within Lewis acidic MIL-101 accomplishes highly selective conversion of glucose to fructose in the presence of ethanol, matching the performance of optimized Sn-containing Lewis acidic zeolites.D ifferently from zeolites, NMR spectroscopystudies with isotopically labeled molecules demonstrate that isomerization of glucose to fructose on this catalyst, proceeds predominantly via ap roton transfer mechanism.

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Section: Methodsmentioning

confidence: 99%

A Chromium Hydroxide/MIL‐101(Cr) MOF Composite Catalyst and Its Use for the Selective Isomerization of Glucose to Fructose

et al. 2018

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“…Therefore, they enable beneficial effects on adsorption and reaction in processing bulky molecules. There are many reports about enhanced performance that can be achieved in catalysis when using 2D zeolite materials, especially for delaminated and pillared zeolite materials [36][37][38][39][40][41][42]. Overviews of 2D zeolites in catalysis have been published by J.Čejka [6,9,43] and J.…”

Section: Introductionmentioning

confidence: 99%

Two-Dimensional Zeolite Materials: Structural and Acidity Properties

Schulman

Liu

2020

Materials

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Zeolites are generally defined as three-dimensional (3D) crystalline microporous aluminosilicates in which silicon (Si4+) and aluminum (Al3+) are coordinated tetrahedrally with oxygen to form large negative lattices and consequent Brønsted acidity. Two-dimensional (2D) zeolite nanosheets with single-unit-cell or near single-unit-cell thickness (~2–3 nm) represent an emerging type of zeolite material. The extremely thin slices of crystals in 2D zeolites produce high external surface areas (up to 50% of total surface area compared to ~2% in micron-sized 3D zeolite) and expose most of their active sites on external surfaces, enabling beneficial effects for the adsorption and reaction performance for processing bulky molecules. This review summarizes the structural properties of 2D layered precursors and 2D zeolite derivatives, as well as the acidity properties of 2D zeolite derivative structures, especially in connection to their 3D conventional zeolite analogues’ structural and compositional properties. The timeline of the synthesis and recognition of 2D zeolites, as well as the structure and composition properties of each 2D zeolite, are discussed initially. The qualitative and quantitative measurements on the acid site type, strength, and accessibility of 2D zeolites are then presented. Future research and development directions to advance understanding of 2D zeolite materials are also discussed.

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“…[7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] One such reaction is the isomerization of glucose to fructose in the presence of alcohols. [27][28][29][30] First proposed by Saravanamurugan et al, [27] it has been shown to be ah igh-yield route to fructose and apromising alternative to aqueous routes.F or instance,when glucose isomerization to fructose is combined with fructose ketalization, increased fructose yields beyond the equilibrium levels are achievable and the obtained fructoside is readily hydrolyzed to fructose upon addition of water (Scheme 1).…”

mentioning

confidence: 99%

A Chromium Hydroxide/MIL‐101(Cr) MOF Composite Catalyst and Its Use for the Selective Isomerization of Glucose to Fructose

et al. 2018

Self Cite

View full text Add to dashboard Cite

A metal-organic framework (MOF)-based catalyst, chromium hydroxide/MIL-101(Cr), was prepared by a one-pot synthesis method. The combination of chromium hydroxide particles on and within Lewis acidic MIL-101 accomplishes highly selective conversion of glucose to fructose in the presence of ethanol, matching the performance of optimized Sn-containing Lewis acidic zeolites. Differently from zeolites, NMR spectroscopy studies with isotopically labeled molecules demonstrate that isomerization of glucose to fructose on this catalyst, proceeds predominantly via a proton transfer mechanism.

show abstract

Pillared Sn‐MWW Prepared by a Solid‐State‐Exchange Method and its Use as a Lewis Acid Catalyst

Cited by 47 publications

References 58 publications

A Chromium Hydroxide/MIL‐101(Cr) MOF Composite Catalyst and Its Use for the Selective Isomerization of Glucose to Fructose

A Chromium Hydroxide/MIL‐101(Cr) MOF Composite Catalyst and Its Use for the Selective Isomerization of Glucose to Fructose

Two-Dimensional Zeolite Materials: Structural and Acidity Properties

A Chromium Hydroxide/MIL‐101(Cr) MOF Composite Catalyst and Its Use for the Selective Isomerization of Glucose to Fructose

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