Authors:
G. Hussein Chemistry Department, Faculty of Science, Minia University, 61519 El-Minia, Egypt

Search for other papers by G. Hussein in
Current site
Google Scholar
PubMed
Close
,
A. Nohman Chemistry Department, Faculty of Science, Minia University, 61519 El-Minia, Egypt

Search for other papers by A. Nohman in
Current site
Google Scholar
PubMed
Close
, and
K. Attyia Chemistry Department, Faculty of Science, Minia University, 61519 El-Minia, Egypt

Search for other papers by K. Attyia in
Current site
Google Scholar
PubMed
Close
Restricted access

Abstract  

Thermogravimetry, differential thermal analysis, X-ray diffractometry and infrared spectroscopy showed that Ni(CH3COO)2·4H2O decomposes completely at 500°C, giving rise to a mixture of Nio and NiO. The results revealed that the compound undergoes dehydration at 160°C and melts at 310°C. The water thus released hydrolyses surface acetate groups, acetic acid being evolved into the gas phase. At 330°C, the anhydrous acetate is converted into NiCO3, releasing CH3COCH3 into the gas phase. The carbonate subsequently decomposes (at 365°C) to give NiO(s), CO2(g) and CO(g). On further heating up to 373°C, a mixture of Nio and NiO is formed. Other gas-phase products were detected at 400°C, viz. CH4 and (CH3)2CH=CH2, which were formed in surface reactions involving initial gas-phase products. Non-isothermal kinetic parameters (A and ΔE) were calculated on the basis of temperature shifts experienced in the various decomposition processes as a function of heating rate (2–20 deg·min−1).

  • Collapse
  • Expand

To see the editorial board, please visit the website of Springer Nature.

Manuscript Submission: HERE

For subscription options, please visit the website of Springer Nature.

Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

Monthly Content Usage

Abstract Views Full Text Views PDF Downloads
Feb 2024 9 0 0
Mar 2024 2 0 0
Apr 2024 1 0 0
May 2024 0 0 0
Jun 2024 3 0 0
Jul 2024 2 0 0
Aug 2024 0 0 0