Lab-scale demonstration of thermochemical energy storage with NH₃ and impregnated-loaded zeolites

Autor(en)

Danny Müller, Christian Knoll, Georg Gravogl, Andreas Werner, Ronald Miletich, Michael Harasek, Peter Weinberger

Abstrakt

High energy densities are one key-feature of thermochemical energy storage materials. Among the substance classes featuring the highest energy densities are oxides and carbonates, having both operational temperature profiles between 800 °C - 1200 °C. Comparable high energy contents are provided by the reaction between ammonia and (transition) metal salts, operable in a medium-temperature range between 150 °C - 450 °C. Due to the toxicity of ammonia a closed cycle preventing the release of ammonia to the surrounding environment would be necessary. Herein, CuSO4 and CuCl2 are investigated in a laboratory scale reactor for their application in thermochemical energy storage with ammonia as reactive gas. In the current setup after 80 seconds peak temperatures of 312 °C and 238 °C respectively were measured. To circumvent the notable volume expansion during the reaction with ammonia, both copper salts were loaded on zeolite 13X, yielding matrix-supported composite materials. Operation of those materials in the laboratory scale reactor under ammonia revealed, that the rapid temperature increase and the high peak temperatures could be retained, simultaneously simplifying the handling of the materials.

Organisation(en)

Institut für Mineralogie und Kristallographie

Externe Organisation(en)

Technische Universität Wien

Anzahl der Seiten

9

DOI

https://doi.org/10.18086/swc.2017.14.04

Publikationsdatum

2017

Peer-reviewed

Ja

ÖFOS 2012

104003 Anorganische Chemie, 104011 Materialchemie, 105113 Kristallographie

Schlagwörter

ASJC Scopus Sachgebiete

Renewable Energy, Sustainability and the Environment

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/8455dde9-0524-49ff-9c41-4fb8d3a0534f