Selective Oxidation of HMF via Catalytic and Photocatalytic Processes Using Metal-Supported Catalysts.
Molecules
; 23(11)2018 Oct 27.
Article
in En
| MEDLINE
| ID: mdl-30373265
ABSTRACT
In this study, 5-hydroxymethylfurfural (HMF) oxidation was carried out via both the catalytic and the photocatalytic approach. Special attention was devoted to the preparation of the TiO2-based catalysts, since this oxide has been widely used for catalytic and photocatalytic application in alcohol oxidation reactions. Thus, in the catalytic process, the colloidal heterocoagulation of very stable sols, followed by the spray-freeze-drying (SFD) approach, was successfully applied for the preparation of nanostructured porous TiO2-SiO2 mixed-oxides with high surface areas. The versatility of the process made it possible to encapsulate Pt particles and use this material in the liquid-phase oxidation of HMF. The photocatalytic activity of a commercial titania and a homemade oxide prepared with the microemulsion technique was then compared. The influence of gold, base addition, and oxygen content on product distribution in the photocatalytic process was evaluated.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Oxidation-Reduction
/
Photochemical Processes
/
Furaldehyde
/
Metals
Language:
En
Journal:
Molecules
Journal subject:
BIOLOGIA
Year:
2018
Document type:
Article
Affiliation country: