Please use this identifier to cite or link to this item:
http://hdl.handle.net/10261/27462
Share/Export:
![]() ![]() |
|
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Title: | Photocatalytic oxidation of aromatic alcohols to aldehydes in aqueous suspension of home-prepared titanium dioxide: 1. Selectivity enhancement by aliphatic alcohols |
Authors: | Augugliaro, Vincenzo; Kisch, Horst; Loddo, Vittorio; López-Muñoz, María José; Márquez Álvarez, Carlos CSIC ORCID ; Palmisano, Giovanni; Palmisano, Leonardo; Parrino, Francesco; Yurdakal, Sedat | Keywords: | Photocatalysis TiO2 Aromatic alcohols Aliphatic alcohol Selective oxidation |
Issue Date: | 31-Oct-2008 | Publisher: | Elsevier | Citation: | Applied Catalysis A - General | Abstract: | Oxygenated aqueous suspensions of home-prepared (HP) and commercial TiO2 catalysts were used in a batch photoreactor for carrying out the oxidation of benzyl alcohol (BA) and 4-methoxybenzyl alcohol (MBA) under different operative conditions. HP catalysts were synthesized from TiCl4 and underwent a hydrolysis treatment of different times under mild conditions. The textural characterization of catalysts was carried out with XRD, SEM observations, BET surface area and porosity measurements. For both alcohols the main oxidation products were the corresponding aromatic aldehydes and CO2. The HP catalysts exhibited selectivity values towards the aldehyde production up to 28% (BA conversion: 50%) and 41% (MBA conversion: 65%), about four times higher than those of commercial TiO2. The addition of an aliphatic alcohol (methanol, ethanol, 2-propanol or tert-butanol) in small amounts with respect to water decreased the overall oxidation rate of aromatic alcohols but enhanced the selectivity for aldehyde formation up to 1.5 times. The reactivity results suggest that: (i) the aromatic alcohol molecules interact with the TiO2 surface in different ways that eventually determine two parallel reaction pathways (partial oxidation or mineralization); (ii) the aliphatic alcohols preferentially compete with aromatic alcohols for the mineralizing pathway. | Publisher version (URL): | http://dx.doi.org/10.1016/j.apcata.2008.07.032 | URI: | http://hdl.handle.net/10261/27462 | DOI: | 10.1016/j.apcata.2008.07.032 | ISSN: | 0926-860X |
Appears in Collections: | (ICP) Artículos |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
ApplCatalA_2008_349_182_OA.pdf | 367,72 kB | Adobe PDF | ![]() View/Open |
Review this work
SCOPUSTM
Citations
68
checked on May 23, 2022
WEB OF SCIENCETM
Citations
62
checked on May 22, 2022
Page view(s)
374
checked on May 26, 2022
Download(s)
348
checked on May 26, 2022
Google ScholarTM
Check
Altmetric
Dimensions
WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.