Pyrolysis Kinetic of Basic Zinc Carbonate from Spent Catalyst and Preparation of Active ZnO by Microwave Heating

Ze Biao Zhang; Zheng Yong Zhang; Jin Hui Peng; Li Bo Zhang; Wen Wen Qu; Wei Li

doi:10.4028/www.scientific.net/AMR.79-82.2051

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 79-82Pyrolysis Kinetic of Basic Zinc Carbonate from...

Pyrolysis Kinetic of Basic Zinc Carbonate from Spent Catalyst and Preparation of Active ZnO by Microwave Heating

Abstract:

The TG and DTG curves of self-made ZnO precursor were studied by the thermo-gravimetric analysis method in N2 atmosphere from 25°C to 650°C at the heating rate of 5, 10 and 15°C/min. The TG curve showed that the decomposition process started at about 150°C and finished at 300°C, in accordance with the temperature range of the decomposition from basic zinc carbonate to zinc oxide. The first level chemical reaction based on Coats-Redfern method was applied to estimate the activation energy of the decomposition. The correlation factor was about 0.99, and the calculated average activation energy was 33.89kJ/mol. Active zinc oxides were perpetrated by microwave heating at 350°C for 30min. Their composition and surface morphology were investigated by using scanning electron microscope and X-ray diffraction and its quality can reach the first-grade standard of HG/T2572-94.

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Advanced Materials Research (Volumes 79-82)

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2051-2054

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.79-82.2051

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Online since:

August 2009

Authors:

Ze Biao Zhang, Zheng Yong Zhang, Jin Hui Peng, Li Bo Zhang, Wen Wen Qu, Wei Li

Keywords:

Active Zinc Oxide, Microwave Heating, Pyrolysis Kinetic, Spent Catalyst

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