Paper Title:
Effect of Particle Size on Oxidation Reaction Kinetics Parameter of Cu2O Powders
  Abstract

The 0.4mol•L-1CuSO4 liquor and 5mol•L-1NaOH liquor were prepared by CuSO4·5H2O and NaOH as raw materials. The Cu2O powders were prepared by dextrose reducer and PVP dispersant. The Cu2O oxidation reaction DTA-TG-DTG curves were obtained by SDT 2960 simultaneous DSC-TGA analysis apparatus. The mensuration condition were that rise temperature velocity 15°C·min-1 and deoxidize gas air. The Cu2O oxidation reaction kinetics was calculated by DTA-TG-DTG curves data. The results indicate that the cuprous oxide powders shape were spherical, their particle’ sizes were 100,200,1000nm. Their apparent activation energy were 164.38, 175.54, 282.65 KJ·mol-1, the apparent activation energy increase with Cu2O particle’ size. Their frequency factors were 1.22×1013, 1.40×1013, 2.88×1020, the frequency factors increase with particle’ size Cu2O. Their reaction progressions were 1.02, 1.00, 0.96, the reaction progression increase with Cu2O particle’ size decreased.

  Info
Periodical
Advanced Materials Research (Volumes 284-286)
Chapter
Micro/Nano Materials
Edited by
Xiaoming Sang, Pengcheng Wang, Liqun Ai, Yungang Li and Jinglong Bu
Pages
726-729
DOI
10.4028/www.scientific.net/AMR.284-286.726
Citation
Z. Y. Li, Y. C. Zhai, M. Pang, "Effect of Particle Size on Oxidation Reaction Kinetics Parameter of Cu2O Powders", Advanced Materials Research, Vols. 284-286, pp. 726-729, 2011
Online since
July 2011
Export
Price
$32.00
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