NDLI: The kinetics of non-isothermal decomposition of the Z/Al(OH)$_{3}$ mixtures (Z = ZnO or Zn$_{4}$CO$_{3}$(OH)$_{6}$·H$

Content Provider	Springer Nature Link
Author	Prokof’ev, V. Yu. Gordina, N. E. Smirv, N. N.
Copyright Year	2015
Abstract	The kinetics of non-isothermal decomposition of ZnO/Al(OH)$_{3}$ and Zn$_{4}$CO$_{3}$(OH)$_{6}$·H$_{2}$O/Al(OH)$_{3}$ has been studied both for the starting mixtures and for mixtures after co-grinding. The process has been controlled by X-ray diffraction, scanning electron microscopy, thermogravimetry and differential scanning calorimetry under air atmosphere (the heating rates were 5, 10 and 15 °C min$^{−1}$). The activation energy was calculated using the Friedman analysis and Ozawa–Flynn–Wall analysis. It was shown that both methods gave similar results. It was found that the dehydration activation energy of gibbsite to boehmite in the mixture with ZnO gradually is decreased from 150–170 to 100 kJ mol$^{−1}$. At the final stage (conversion degree was more than 0.9), the dehydration process converted from kinetic mode into the diffusion mode (the activation energy was 50–70 kJ mol$^{−1}$). It was established that the activation energy of Zn$_{4}$CO$_{3}$(OH)$_{6}$·H$_{2}$O/Al(OH)$_{3}$ decomposition at a conversion degree <0.5 (decomposition of basic zinc carbonate to ZnO) has values 130–170 kJ mol$^{−1}$. For a conversion degree 0.5–0.9 (dehydration of gibbsite to boehmite), the activation energy amounted to 90–130 kJ mol$^{−1}$. At the final stage of decomposition (degree of conversion above 0.9), the process occurred in the diffusion mode in which the activation energy amounted to 40–70 kJ mol$^{−1}$. It was revealed that after co-grinding of the ZnO/Al(OH)$_{3}$ composition, the dehydration process of activation energy has decreased by 10–20 % compared with the original mixture. After the co-grinding of Zn$_{4}$CO$_{3}$(OH)$_{6}$·H$_{2}$O/Al(OH)$_{3}$ mixture, the activation energy has increased by 10–15 %. These facts had been explained by changes in the size and defectiveness of the solid-phase particles.
Starting Page	159
Ending Page	170
Page Count	12
File Format	PDF
ISSN	13886150
Journal	Journal of thermal analysis
Volume Number	124
Issue Number	1
e-ISSN	15882926
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-10-28
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Thermal decomposition Non-isothermal kinetics Gibbsite Zinc oxide Zinc hydroxide carbonate Co-grinding Physical Chemistry Analytical Chemistry Polymer Sciences Inorganic Chemistry Measurement Science and Instrumentation
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Condensed Matter Physics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Study of thermal decomposition of a zinc(II) monomethyl terephthalate complex, [Zn(CH$_{3}$O–CO–C$_{6}$H$_{4}$COO)$_{2}$(OH$_{2}$)$_{3}$]·2H$_{2}$O

Products and non-isothermal kinetics of thermal decomposition of MgFe$_{2}$(C$_{2}$O$_{4}$)$_{3}$·6H$_{2}$O

Chromium(III) Hydroxide Solubility in the Aqueous K$^{+}$-H$^{+}$-OH$^{−}$-CO$_{2}$-HCO 3 − -CO 3 2− -H$_{2}$O System: A Thermodynamic Model

Studies on the non-isothermal kinetics of the thermal decomposition of [Cu(NBOCTB)][Cu(NO$_{3}$)$_{4}$]· H$_{2}$O

Application of simplified version of advanced isoconversional procedure in non-isothermal kinetic study : Thermal decomposition of NH4Co0.9Zn0.1PO4·H2O

Non-isothermal decomposition kinetics of synthetic serrabrancaite (MnPO$_{4}$ · H$_{2}$O) precursor in N$_{2}$ atmosphere

Non-isothermal kinetics of thermal decomposition of NH$_{4}$ZrH(PO$_{4}$)$_{2}$·H$_{2}$O

The Co-Grinding of Z/Cao/Al(OH)3 (Z = ZnO Or Zn4CO3(OH)6) Powder Compositions as Technique for Preparation of Sorbents

Thermal decomposition of the layered double hydroxides of formula Cu$_{6}$Al$_{2}$(OH)$_{16}$CO$_{3}$ and Zn$_{6}$Al$_{2}$(OH)$_{16}$CO$_{3}$

The kinetics of non-isothermal decomposition of the Z/Al(OH)$_{3}$ mixtures (Z = ZnO or Zn$_{4}$CO$_{3}$(OH)$_{6}$·H$_{2}$O)

Similar Documents

Study of thermal decomposition of a zinc(II) monomethyl terephthalate complex, [Zn(CH$_{3}$O–CO–C$_{6}$H$_{4}$COO)$_{2}$(OH$_{2}$)$_{3}$]·2H$_{2}$O

Products and non-isothermal kinetics of thermal decomposition of MgFe$_{2}$(C$_{2}$O$_{4}$)$_{3}$·6H$_{2}$O

Chromium(III) Hydroxide Solubility in the Aqueous K$^{+}$-H$^{+}$-OH$^{−}$-CO$_{2}$-HCO 3 − -CO 3 2− -H$_{2}$O System: A Thermodynamic Model

Studies on the non-isothermal kinetics of the thermal decomposition of [Cu(NBOCTB)][Cu(NO$_{3}$)$_{4}$]· H$_{2}$O

Application of simplified version of advanced isoconversional procedure in non-isothermal kinetic study : Thermal decomposition of NH4Co0.9Zn0.1PO4·H2O

Non-isothermal decomposition kinetics of synthetic serrabrancaite (MnPO$_{4}$ · H$_{2}$O) precursor in N$_{2}$ atmosphere

Non-isothermal kinetics of thermal decomposition of NH$_{4}$ZrH(PO$_{4}$)$_{2}$·H$_{2}$O

The Co-Grinding of Z/Cao/Al(OH)3 (Z = ZnO Or Zn4CO3(OH)6) Powder Compositions as Technique for Preparation of Sorbents

Thermal decomposition of the layered double hydroxides of formula Cu$_{6}$Al$_{2}$(OH)$_{16}$CO$_{3}$ and Zn$_{6}$Al$_{2}$(OH)$_{16}$CO$_{3}$

The kinetics of non-isothermal decomposition of the Z/Al(OH)$_{3}$ mixtures (Z = ZnO or Zn$_{4}$CO$_{3}$(OH)$_{6}$·H$_{2}$O)