Imperial College London

DrCeriHammond

Faculty of EngineeringDepartment of Chemical Engineering

Senior Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 2878ceri.hammond CV

 
 
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Location

 

ACE ExtensionSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Botti:2020:10.1002/ange.202006718,
author = {Botti, L and Kondrat, SA and Navar, R and Padovan, D and Martinez-Espin, JS and Meier, S and Hammond, C},
doi = {10.1002/ange.202006718},
journal = {Angewandte Chemie},
title = {Solvent-Activated Hafnium-Containing Zeolites Enable Selective and Continuous Glucose–Fructose Isomerisation},
url = {http://dx.doi.org/10.1002/ange.202006718},
year = {2020}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - © 2020 Wiley-VCH GmbH The isomerisation of glucose to fructose is a critical step towards manufacturing petroleum-free chemicals from lignocellulosic biomass. Herein we show that Hf-containing zeolites are unique catalysts for this reaction, enabling true thermodynamic equilibrium to be achieved in a single step during intensified continuous operation, which no chemical or biological catalyst has yet been able to achieve. Unprecedented single-pass yields of 58 % are observed at a fructose selectivity of 94 %, and continuous operation for over 100 hours is demonstrated. The unexpected performance of the catalyst is realised following a period of activation within the reactor, during which time interaction with the solvent generates a state of activity that is absent in the synthesised catalyst. Mechanistic studies by X-ray absorption spectroscopy, chemisorption FTIR, operando UV/Vis and 1H–13C HSQC NMR spectroscopy indicate that activity arises from isolated HfIV atoms with monofunctional acidic properties.
AU - Botti,L
AU - Kondrat,SA
AU - Navar,R
AU - Padovan,D
AU - Martinez-Espin,JS
AU - Meier,S
AU - Hammond,C
DO - 10.1002/ange.202006718
PY - 2020///
SN - 0044-8249
TI - Solvent-Activated Hafnium-Containing Zeolites Enable Selective and Continuous Glucose–Fructose Isomerisation
T2 - Angewandte Chemie
UR - http://dx.doi.org/10.1002/ange.202006718
ER -