alexa Effect of Ag-doping of Nanosized FeAlO System on its Structural, Surface and Catalytic Properties | OMICS International| Abstract

ISSN: 2157-7544

Journal of Thermodynamics & Catalysis

  • Research Article   
  • J Thermodyn Catal,
  • DOI: 10.4172/2157-7544.1000108

Effect of Ag-doping of Nanosized FeAlO System on its Structural, Surface and Catalytic Properties

Laila I. Ali*, Sahar A. El-Molla, Nabil H. Amin, Anwer A. Ebrahim and Hala R. Mahmoud
Chemistry Department, Faculty of Education, Ain Shams University, Roxy 11757, Cairo, Egypt
*Corresponding Author : Laila I. Ali, Chemistry Department, Faculty of Education, Ain Shams University, Roxy 11757, Cairo, Egypt, Tel: (02012) 23184682, Fax: (02) 22581243, Email: [email protected]

Received Date: Oct 13, 2011 / Accepted Date: Nov 16, 2011 / Published Date: Dec 06, 2011

Abstract

The effects of Ag2O-doping on the physicochemical, surface and catalytic properties FeAlO system with various extent of Fe2O3 loading have been investigated. The dopant concentration was changed between 1.5 and 4.0 mol % Ag2O. Pure and variously doped solids were subjected to heat treatment at 400-800?C. The techniques employed for characterization of catalysts were TG/DTG, XRD, N2-adsorption at ?196?C and the catalytic decomposition of H2O2 at 25-40?C. The obtained results revealed that, the investigated catalysts consisted of nanosized ?-Al2O3 phase. The textural properties including SBET, porosity and St were modified by Ag2O-doping. The doping process with Ag-species improved the catalytic activity of FeAlO system. Increasing the precalcination temperature from 400 to 800?C increased the catalytic activity (k30°C) of 3.5 % AgFeAlO with 1.9 fold towards H2O2 decomposition. Furthermore, the maximum increase in the k30°C value due to doping with 3.5 mol% Ag2O attained about 15.1 fold for the solids calcined at 800°C.

Keywords: Fe2O3/Al2O3 catalyst; Ag2O-doping; Surface; Amorphous materials; H2O2 decomposition

Citation: Ali LI, El-Molla SA, Amin NH, Ebrahim AA, Mahmoud HR (2011) Effect of Ag-doping of Nanosized FeAlO System on its Structural, Surface and Catalytic Properties. J Thermodyn Catal 2: 108. Doi: 10.4172/2157-7544.1000108

Copyright: © 2011 Ali LI, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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