Calorimetric examination of suitability of calcium, cobalt and nickel nitrate hydrates for thermal energy storage

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F20%3A00536883" target="_blank" >RIV/61388955:_____/20:00536883 - isvavai.cz</a>

Alternative codes found

RIV/00216275:25310/20:39916551 RIV/00216275:25530/20:39916551

Result on the web

<a href="http://hdl.handle.net/11104/0314635" target="_blank" >http://hdl.handle.net/11104/0314635</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10973-020-09435-y" target="_blank" >10.1007/s10973-020-09435-y</a>

Result language

angličtina

Original language name

Calorimetric examination of suitability of calcium, cobalt and nickel nitrate hydrates for thermal energy storage

Original language description

Selected nitrate hydrates were characterized using X-ray diffraction, helium pycnometer, Calvet-type calorimeter and simultaneous thermogravimetry coupled with differential scanning calorimeter. Melting and crystallization of all studied nitrate hydrates were observed by differential scanning calorimeter, and the supercooling (difference between melting temperature and crystallization temperature) was found to be more than 80, 14 and 37 degrees C for calcium nitrate tetrahydrate, cobalt and nickel nitrate hexahydrates, respectively. Those salts were mixed with selected nucleating agents to suppress supercooling and then tested under repeating of heating-cooling cycles. Calcium nitrate tetrahydrate showed reversible liquid-solid process with addition of CaO, Ca(OH)(2), BaO, Ba(OH)(2)center dot 8H(2)O, graphite and graphene, but the supercooling remains too high, and the enthalpy change significantly decreased. In the case of cobalt nitrate hexahydrate, the CaO, Ba(OH)(2)center dot 8H(2)O and graphite are the most effective nucleating agent in amount of 1 mass%. The supercooling of nickel nitrate hexahydrate was effectively reduced by addition of CaO, Sr(OH)(2) and graphite. The cobalt and nickel nitrates were tested with combination of two nucleating agents (1:1). The best results were obtained for composites with addition of 1 mass% of nucleating agent mixture consisting of both graphite and Ba(OH)(2)center dot 8H(2)O for cobalt nitrate hexahydrate, and CaO with Mg(OH)(2) for nickel nitrate hexahydrate.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10403 - Physical chemistry

Project

<a href="/en/project/EF16_013%2F0001821" target="_blank" >EF16_013/0001821: Completing and upgrade RI Nanomaterials and nanotechnologies for environment protection and sustainable future</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Thermal Analysis and Calorimetry

ISSN

1388-6150

e-ISSN

—

Volume of the periodical

142

Issue of the periodical within the volume

1

Country of publishing house

HU - HUNGARY

Number of pages

13

Pages from-to

275-287

UT code for WoS article

000516506000002

EID of the result in the Scopus database

2-s2.0-85079759245