Isothermal decomposition kinetics of nickel (II) hydroxide powder
Abstract
In this work, nickel (II) hydroxide powder was investigated by thermogravimetry for isothermal decomposition kinetics and verification of the Ni–O–H ternary phase diagram at low temperatures. The activation energy and frequency factor were measured as $$E_a$$ = 134 kJ/mol and A = 1.27 × 1010 s–1, respectively. The validity of the first-order random nucleation model was confirmed, as opposed to diffusion and or moving-boundary models. The dependence of TGA results on specimen size was noted. The Ni–Ni(OH)2–NiO phase triangle was confirmed. Accordingly, a thermodynamic description of the system was established in the Ni-rich corner, and the isotherm at room temperature is calculated.
- Authors:
-
- National Energy Technology Lab. (NETL), Albany, OR (United States); AECOM, Albany, OR (United States)
- National Energy Technology Lab. (NETL), Albany, OR (United States)
- Publication Date:
- Research Org.:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
- Sponsoring Org.:
- USDOE Office of Fossil Energy (FE); AECOM
- OSTI Identifier:
- 1765263
- Alternate Identifier(s):
- OSTI ID: 1250208
- Grant/Contract Number:
- AC26-04NT41817; FE0004000
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Alloys and Compounds
- Additional Journal Information:
- Journal Volume: 644; Journal ID: ISSN 0925-8388
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; Nickel hydroxide; Thermal decomposition kinetics; Solid state reactions; Kinetics; Thermal analysis; X-ray diffraction
Citation Formats
Carney, Casey S., Chinn, Richard E., Doğan, Ömer N., and Gao, Michael C. Isothermal decomposition kinetics of nickel (II) hydroxide powder. United States: N. p., 2015.
Web. doi:10.1016/j.jallcom.2015.03.256.
Carney, Casey S., Chinn, Richard E., Doğan, Ömer N., & Gao, Michael C. Isothermal decomposition kinetics of nickel (II) hydroxide powder. United States. https://doi.org/10.1016/j.jallcom.2015.03.256
Carney, Casey S., Chinn, Richard E., Doğan, Ömer N., and Gao, Michael C. Mon .
"Isothermal decomposition kinetics of nickel (II) hydroxide powder". United States. https://doi.org/10.1016/j.jallcom.2015.03.256. https://www.osti.gov/servlets/purl/1765263.
@article{osti_1765263,
title = {Isothermal decomposition kinetics of nickel (II) hydroxide powder},
author = {Carney, Casey S. and Chinn, Richard E. and Doğan, Ömer N. and Gao, Michael C.},
abstractNote = {In this work, nickel (II) hydroxide powder was investigated by thermogravimetry for isothermal decomposition kinetics and verification of the Ni–O–H ternary phase diagram at low temperatures. The activation energy and frequency factor were measured as $E_a$ = 134 kJ/mol and A = 1.27 × 1010 s–1, respectively. The validity of the first-order random nucleation model was confirmed, as opposed to diffusion and or moving-boundary models. The dependence of TGA results on specimen size was noted. The Ni–Ni(OH)2–NiO phase triangle was confirmed. Accordingly, a thermodynamic description of the system was established in the Ni-rich corner, and the isotherm at room temperature is calculated.},
doi = {10.1016/j.jallcom.2015.03.256},
journal = {Journal of Alloys and Compounds},
number = ,
volume = 644,
place = {United States},
year = {Mon Apr 20 00:00:00 EDT 2015},
month = {Mon Apr 20 00:00:00 EDT 2015}
}
Web of Science
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Works referencing / citing this record:
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