Next Article in Journal
Effect of Particle Size and Operating Conditions on Pt3Co PEMFC Cathode Catalyst Durability
Next Article in Special Issue
Utilization of Volatile Organic Compounds as an Alternative for Destructive Abatement
Previous Article in Journal
Surface Reaction Kinetics of Steam- and CO2-Reforming as Well as Oxidation of Methane over Nickel-Based Catalysts
Previous Article in Special Issue
Co-Al Mixed Oxides Prepared via LDH Route Using Microwaves or Ultrasound: Application for Catalytic Toluene Total Oxidation
Article Menu

Export Article

Open AccessArticle
Catalysts 2015, 5(2), 905-925; doi:10.3390/catal5020905

Oxygen Storage Capacity and Oxygen Mobility of Co-Mn-Mg-Al Mixed Oxides and Their Relation in the VOC Oxidation Reaction

Estado Sólido y Catálisis Ambiental (ESCA), Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia, Kra 30 Nº 45-03, Bogotá, Colombia
*
Author to whom correspondence should be addressed.
Academic Editor: Jean-François Lamonier
Received: 26 February 2015 / Accepted: 22 May 2015 / Published: 29 May 2015
(This article belongs to the Special Issue Catalytic Removal of Volatile Organic Compounds)
View Full-Text   |   Download PDF [3002 KB, uploaded 29 May 2015]   |  

Abstract

Co-Mn-Mg-Al oxides were synthesized using auto-combustion and co-precipitation techniques. Constant ratios were maintained with (Co + Mn + Mg)/Al equal to 3.0, (Co + Mn)/Mg equal to 1.0 and Co/Mn equal to 0.5. The chemical and structural composition, redox properties, oxygen storage capacity and oxygen mobility were analyzed using X-ray fluorescence (XRF), X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), temperature-programmed reduction of hydrogen (H2-TPR), oxygen storage capacity (OSC), oxygen storage complete capacity (OSCC) and isotopic exchange, respectively. The catalytic behavior of the oxides was evaluated in the total oxidation of a mixture of 250 ppm toluene and 250 ppm 2-propanol. The synthesis methodology affected the crystallite size, redox properties, OSC and oxide oxygen mobility, which determined the catalytic behavior. The co-precipitation method got the most active oxide in the oxidation of the volatile organic compound (VOC) mixture because of the improved mobility of oxygen and ability to favor redox processes in the material structure. View Full-Text
Keywords: co-precipitation; hydrotalcite; auto-combustion; oxygen mobility; isotopic exchange; oxygen storage co-precipitation; hydrotalcite; auto-combustion; oxygen mobility; isotopic exchange; oxygen storage
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Castaño, M.H.; Molina, R.; Moreno, S. Oxygen Storage Capacity and Oxygen Mobility of Co-Mn-Mg-Al Mixed Oxides and Their Relation in the VOC Oxidation Reaction. Catalysts 2015, 5, 905-925.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Catalysts EISSN 2073-4344 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top