Imperial College London
Portrait Picture

Dr Roberto Rinaldi FRSC

Faculty of Engineering, Department of Chemical Engineering

Reader in Applied Chemistry
 
 
 
//

Contact

 

+44 (0)20 7594 1302r.rinaldi1 Website

 
 
//

Location

 

523ACE ExtensionSouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Lanziano:2018:10.1002/cssc.201702354,
author = {Lanziano, CAS and Moya, SF and Barrett, DH and Guirardello, R and de, Souto da Silva F and Rinaldi, R and Rodella, CB},
doi = {10.1002/cssc.201702354},
journal = {ChemSusChem},
pages = {872--880},
title = {Hybrid-organic-inorganic anatase as a bifunctional catalyst for enhanced production of HMF from glucose in water},
url = {http://dx.doi.org/10.1002/cssc.201702354},
volume = {11},
year = {2018}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Herein, we report a synthetic route for the preparation of hybrid-organic-inorganic anatase (hybrid-TiO2) via a facile hydrothermal synthesis method employing citric acid. The synthetic approach results in a high surface area nanocrystalline anatase polymorph of TiO2. The uncalcined hybrid-TiO2 is directly studied here as the catalyst for the conversion of glucose into HMF. In the presence of the hybrid-TiO2, HMF yields up to 45% at glucose conversions up to 75% were achieved in water at 130 oC in a monophasic batch reactor. As identified by Ti K-edge XANES, hybrid-TiO2 contains a large fraction of five-fold coordinatively unsaturated Ti(IV) sites, which act as the Lewis acid catalyst for the conversion of glucose into fructose. As citric acid is anchored in the structure of hybrid-TiO2, carboxylate groups seem to catalyze the sequential conversion of fructose into HMF. The fate of citric acid bounded to anatase and the Ti(IV) Lewis acid sites throughout recycling experiments is also investigated. In a broader context, the contribution outlines the importance of hydrothermal synthesis for the creation of water-resistant Lewis acid sites for the conversion of sugars. Most importantly, the utilization of the hybrid-TiO2 with no calcination step contributes to dramatically decreasing the energy consumption in the catalyst preparation.
AU  - Lanziano,CAS
AU  - Moya,SF
AU  - Barrett,DH
AU  - Guirardello,R
AU  - de,Souto da Silva F
AU  - Rinaldi,R
AU  - Rodella,CB
DO  - 10.1002/cssc.201702354
EP  - 880
PY  - 2018///
SN  - 0003-4592
SP  - 872
TI  - Hybrid-organic-inorganic anatase as a bifunctional catalyst for enhanced production of HMF from glucose in water
T2  - ChemSusChem
UR  - http://dx.doi.org/10.1002/cssc.201702354
UR  - http://hdl.handle.net/10044/1/57092
VL  - 11
ER  -
Download