Kinetic Studies of Isothermal Decomposition of Unirradiated and Γ-Irradiated Gallium Acetylacetonate: New Route for Synthesis of Gallium Oxide Nanoparticles-Reference-Cited by-同舟云学术

Kinetic Studies of Isothermal Decomposition of Unirradiated and Γ-Irradiated Gallium Acetylacetonate: New Route for Synthesis of Gallium Oxide Nanoparticles

Published:2012-07 Issue:3 Volume:37 Page:249-262
ISSN:1468-6783
Container-title:Progress in Reaction Kinetics and Mechanism
language:en
Short-container-title:Progress in Reaction Kinetics and Mechanism

Author:

Mahfouz R.M.¹,Al-Khamis Kh.M.¹,Siddiqui M.R.H.¹,Al-Hokbany N.S.¹,Warad I²,Al-Andis N.M.¹

Affiliation:

1. Department of Chemistry, College of Science, King Saud University, PO Box 2455, Riyadh-11451, Saudi Arabia

2. Department of Chemistry, AN-Najah National University, PO Box 7, Nablus Palestine Territories

Abstract

Isothermal decomposition of unirradiated and γ-irradiated gallium acetylacetonate Ga(acac)3 with 103 kGy total γ-ray dose was carried out in static air. The isothermal operating temperatures were 160, 170, 180 and 190°C. The kinetics of decomposition were followed using both model-fitting and model-free approaches. The results of model fitting application on the investigated data showed that the decomposition behaviour was best described by phase-boundary controlled reaction (R2). Kinetic parameters of the decomposition process were calculated and evaluated. Analysis of the data using model free approach signifies the dependency of Ea on extent of conversion (α). Pre-γ-irradiation of gallium acetylacetonate Ga(acac)3 with 103 kGy total γ-ray dose has almost no effect on the kinetic parameters.

Publisher

SAGE Publications

Subject

Physical and Theoretical Chemistry

Link

http://journals.sagepub.com/doi/pdf/10.3184/146867812X13377012276288

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