Conversion of glucose to fructose over Sn and Ga-doped zeolite Y in methanol and water media

DOI: 10.1016/j.apcata.2022.118689

Authors: Mohamed M. M. Kashbor (University of Sheffield) , Dedi Sutarma (University of Sheffield) , James Railton (University of Sheffield) , Naoko Sano (Newcastle University) , Peter J. Cumpson (Newcastle University; University of New South Wales) , Diego Gianolio (Diamond Light Source) , Giannantonio Cibin (Diamond Light Source) , Luke Forster (The University of Manchester) , Carmine D’agostino (The University of Manchester) , Xi Liu (Shanghai Jiao Tong University; Synfuels China Co. Ltd) , Liwei Chen (Shanghai Jiao Tong University) , Volkan Degirmenci (University of Warwick) , Marco Conte (University of Sheffield)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Applied Catalysis A: General , VOL 9

State: Published (Approved)
Published: May 2022
Diamond Proposal Number(s): 24728

Abstract: In this study, we use zeolite Y as a support for the synthesis of Sn and Ga doped zeolites aimed at the isomerization of glucose to fructose. Though these materials are inactive in water, they are active in methanol and we could ascertain a reaction pathway involving a hydride shift for the interconversion of glucose to fructose and mannose, and a Brønsted acid pathway with the formation of a methyl fructoside intermediate and its hydrolysis to fructose if water was added afterwards. By using characterizations comprising: chemisorption, XPS, XRD, HAADF-STEM and EXAFS; it was possible to demonstrate that a straightforward impregnation protocol for the preparation of our catalysts, led to Sn/Y mainly consisting of small SnO2 clusters on the external surface of the zeolite, whereas Ga/Y consisting of highly dispersed Ga species mostly inside the zeolite pores; and a catalytic activity that appears to be dominated by Brønsted acid sites.

Journal Keywords: zeolites; sugar isomerization; platform chemicals; tin; gallium; methanol; water

Subject Areas: Materials, Chemistry


Instruments: B18-Core EXAFS

Added On: 01/06/2022 09:39

Documents:
1-s2.0-S0926860X22002125-main.pdf

Discipline Tags:

Zeolites Physical Chemistry Catalysis Chemistry Materials Science

Technical Tags:

Spectroscopy X-ray Absorption Spectroscopy (XAS) Extended X-ray Absorption Fine Structure (EXAFS)