NDLI: Ruthenium catalysts supported on TiO$_{2}$ prepared by sol–gel way for p-hydroxybenzoic acid wet air oxidation

Content Provider	SpringerLink
Author	Triki, Mohamed Minh, Doan Pham Ksibi, Zouhaier Ghorbel, Abdelhamid Besson, Michèle
Copyright Year	2008
Abstract	The wet air oxidation of p-hydroxybenzoic acid, chosen as a model compound of olive mills wastewaters was carried out at 140 °C and 50 bar air over Ru catalysts supported on TiO$_{2}$ prepared by sol–gel method. These catalysts were characterized by means of N$_{2}$ adsorption–desorption, XRD and TEM. Optimization of the catalytic performances was obtained by studying some parameters such as the catalyst preparation method, the solvent evacuation way, the nature of the hydrolysis agent, the influence of the ruthenium salt used as the metal precursor (Ru(NO)(NO$_{3}$)$_{3}$ or Ru(acac)$_{3}$) and the catalyst pretreatment. The pre-calcination of the catalyst precursor at 300 °C under oxygen, before the reduction step under hydrogen, was detrimental to the activity. The results showed that the use of nitric acid as hydrolysis agent, drying under supercritical conditions and the use of Ru(NO)(NO$_{3}$)$_{3}$ leads to the more efficient catalyst with high TOC abatement.
Starting Page	344
Ending Page	349
Page Count	6
File Format	PDF
ISSN	09280707
Journal	Journal of Sol-Gel Science and Technology
Volume Number	48
Issue Number	3
e-ISSN	15734846
Language	English
Publisher	Springer US
Publisher Date	2008-08-27
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ruthenium catalysts Mesoporous TiO$_{2}$ Sol–gel Catalytic wet air oxidation p-Hydroxybenzoic acid Nanotechnology Optical and Electronic Materials Inorganic Chemistry Ceramics, Glass, Composites, Natural Methods
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Chemistry Materials Chemistry Biomaterials Condensed Matter Physics Electronic, Optical and Magnetic Materials

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