Composite Material “Mg(OH)2/Vermiculite”: A Promising New Candidate for Storage of Middle Temperature Heat | Sciact - CRIS-system of Boreskov Institute of Catalysis

Composite Material “Mg(OH)2/Vermiculite”: A Promising New Candidate for Storage of Middle Temperature Heat Full article

Journal

Energy
ISSN: 0360-5442 , E-ISSN: 1873-6785

Output data

Year: 2012, Volume: 44, Number: 1, Pages: 1028-1034 Pages count : 6 DOI: 10.1016/j.energy.2012.04.045

Tags

Composite materials, Heat storage, Heat storage capacity, Magnesium hydroxide, Middle temperature heat, Thermal decomposition

Authors

Shkatulov Alexandr ¹ , Ryu Junichi ² , Kato Yukitaka ² , Aristov Yury ¹

Affiliations

1	Boreskov Institute of Catalysis, Ac. Lavrentieva Av. 5, Novosibirsk, Russia
2	Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, 2-12-1-N1-22 O-okayama, Meguro-ku, Tokyo 152-8550, Japan

New composite material for storage and transformation of heat of a temperature range of 250–350 °C has been synthesized by precipitation of magnesium hydroxide Mg(OH)2 in the pores of expanded vermiculite. The hydroxide is stabilized inside the pores as irregular sticks of 1–3 μm in size across flats of the base and about 30 μm in length. The temperature of decomposition of the confined hydroxide is found to be by some 50 °C lower than that of the bulk one as revealed by both TG and DSC techniques. One possible reason of this finding is a significant acceleration of the decomposition reaction of the confined hydroxide as revealed from comparative kinetic tests in the temperature range of 260–300 °C. The maximal heat storage capacity is 540 kJ per kg of the composite with the hydroxide content of 67.4 mass. % that is larger than the heat of melting for promising phase change materials. Further study of the new composite material for storage of middle temperature heat could be of high interest to find out reasons of the decomposition temperature reduction in order to use this effect for harmonizing the reaction temperature with the temperature level of heat to be stored.

Shkatulov A. , Ryu J. , Kato Y. , Aristov Y.
Composite Material “Mg(OH)2/Vermiculite”: A Promising New Candidate for Storage of Middle Temperature Heat
Energy. 2012. V.44. N1. P.1028-1034. DOI: 10.1016/j.energy.2012.04.045 WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	Feb 6, 2012
Accepted:	Apr 20, 2012
Published online:	May 24, 2012
Published print:	Aug 1, 2012

Web of science:	WOS:000308259300100
Scopus:	2-s2.0-84864346054
Elibrary:	20479290
Chemical Abstracts:	2012:1128981
Chemical Abstracts (print):	158:539805
OpenAlex:	W2020700561

DB	Citing
Web of science	73
Scopus	85
Elibrary	80
OpenAlex	85