Enhanced Catalytic Activity of Modified ZSM‐5 Towards Glucose Isomerization to Fructose

The present study focuses on generating mesopores within H−ZSM‐5 (H−Z) zeolite via desilication and dealumination to incorporate Lewis acidic metal, such as Sn, into the framework (Sn4ZS180A15) to catalyse glucose isomerisation. Sn4ZS180A15 possesses enhanced surface area (457 m2 g−1), mesopore volu...

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Bibliographic Details
Published in:ChemPlusChem (Weinheim, Germany) Germany), 2023-01, Vol.88 (1), p.e202200299-n/a
Main Authors: Gautam, Rahul, Pal, Priyanka, Saravanamurugan, Shunmugavel
Format: Article
Language:English
Subjects:
carbohydrates
Ethanol
Fructose
Glucose
heterogeneous catalysis
Isomerism
Lewis acids
tin
Water
zeolites
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Summary:The present study focuses on generating mesopores within H−ZSM‐5 (H−Z) zeolite via desilication and dealumination to incorporate Lewis acidic metal, such as Sn, into the framework (Sn4ZS180A15) to catalyse glucose isomerisation. Sn4ZS180A15 possesses enhanced surface area (457 m2 g−1), mesopore volume (0.585 cm3 g−1) and a high weak‐medium to strong acidic sites ratio, compared to parent H−Z (395 m2 g−1; 0.174 cm3 g−1). DRS‐UV‐Vis and XPS results corroborate Sn incorporation into the framework of Sn4ZS180A15, based on the absorbance peak around 200–220 nm and peaks appearing at 495.8 and 487.4 eV, respectively. Sn4ZS180A15 exhibits higher catalytic activity towards glucose isomerisation in ethanol−water at 110 °C, yielding 44.2 % fructose with 80.0 % selectivity. Conversely, the parent H−Z afforded negligible glucose conversion with a fructose yield of
ISSN:2192-6506
2192-6506
DOI:10.1002/cplu.202200299