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  • 1 Universidade Federal da Paraíba Departamento de Química, CCEN 58059-900 Joăo Pessoa Paraíba Brazil 58059-900 Joăo Pessoa Paraíba Brazil
  • | 2 Universidade Federal de Campina Grande Departamento Engenharia Química, CCT 58109-970 Campina Grande PB Brazil E-mail 58109-970 Campina Grande PB Brazil E-mail
  • | 3 Universidade Federal da Paraíba Brazil 3Departamento Cięncias Básicas Sociais, Campus IV Bananeiras PB Brazil Bananeiras PB Brazil
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Abstract  

The thermogravimetric curves of di-n-propylammonium, di-iso-propylammonium, di-n-butylammonium and di-iso-butylammonium chlorides showed similar profiles, characterized by mass loss in only one stage, corresponding to decomposition of compounds. The following thermal stability order was obtained: [Bu2nNH2]Cl>[Pr2nNH2]Cl>[Pr2iNH2]Cl>[Bu2iNH2]Cl. The values of activation energy for non-isothermal data obtained by Ozawa and Coats-Redfern integral methods were in agreement and stability order obtained by thermogravimetry were reproduced in both methods. The decomposition reactions of [Pr2nNH2]Cl, [Pr2iNH2]Cl and [Bu2iNH2]Cl were better described by A3 model and [Bu2nNH2]Cl by A2 model.

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  • Impact Factor (2019): 2.731
  • Scimago Journal Rank (2019): 0.415
  • SJR Hirsch-Index (2019): 87
  • SJR Quartile Score (2019): Q3 Condensed Matter Physics
  • SJR Quartile Score (2019): Q3 Physical and Theoretical Chemistry
  • Impact Factor (2018): 2.471
  • Scimago Journal Rank (2018): 0.634
  • SJR Hirsch-Index (2018): 78
  • SJR Quartile Score (2018): Q2 Condensed Matter Physics
  • SJR Quartile Score (2018): Q2 Physical and Theoretical Chemistry

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
4
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)

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