Accelerating the hydration reaction of potassium carbonate using organic dopants

Jelle Houben; Joris van Biesen; Henk Huinink; Hartmut R. Fischer; Olaf C.G. Adan

doi:10.1016/j.solmat.2023.112410

Accelerating the hydration reaction of potassium carbonate using organic dopants

Jelle Houben, Joris van Biesen, Henk Huinink (Corresponding author), Hartmut R. Fischer, Olaf C.G. Adan

Onderzoeksoutput: Bijdrage aan tijdschrift › Tijdschriftartikel › Academic › peer review

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Potassium carbonate has recently been identified as a promising candidate for thermochemical energy storage. However, as for many salt hydrates, the reaction kinetics is limited, and moreover, the hydration transition is kinetically hindered due to a metastable zone, involving limited mobility. This work aims to improve mobility by using organic potassium dopants, it shows that doping with potassium-formate and -acetate, can accelerate the hydration reaction. It has been shown that these dopants can enhance the hydration rate by two mechanisms i.e. introducing mobility due to adsorption of more water or introducing more surface area, where water adsorption can occur. This work opens up new possibilities for organic dopants to enhance the performance of salt hydrates.

Originele taal-2	Engels
Artikelnummer	112410
Aantal pagina's	8
Tijdschrift	Solar Energy Materials and Solar Cells
Volume	259
DOI's	https://doi.org/10.1016/j.solmat.2023.112410
Status	Gepubliceerd - 15 aug. 2023

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Funding Information:
This work was funded by the TKI project Dope4Heat with project number 1507201 and the Dutch Organization for Applied Research (TNO) . This work reflects only the authors view. The authors thank Hans Dalderop and Jef Noijen for their technical support.

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title = "Accelerating the hydration reaction of potassium carbonate using organic dopants",

abstract = "Potassium carbonate has recently been identified as a promising candidate for thermochemical energy storage. However, as for many salt hydrates, the reaction kinetics is limited, and moreover, the hydration transition is kinetically hindered due to a metastable zone, involving limited mobility. This work aims to improve mobility by using organic potassium dopants, it shows that doping with potassium-formate and -acetate, can accelerate the hydration reaction. It has been shown that these dopants can enhance the hydration rate by two mechanisms i.e. introducing mobility due to adsorption of more water or introducing more surface area, where water adsorption can occur. This work opens up new possibilities for organic dopants to enhance the performance of salt hydrates.",

keywords = "Organic potassium salt doping, Potassium acetate, Potassium carbonate, Potassium formate, Surface mobility",

author = "Jelle Houben and {van Biesen}, Joris and Henk Huinink and Fischer, {Hartmut R.} and Adan, {Olaf C.G.}",

note = "Funding Information: This work was funded by the TKI project Dope4Heat with project number 1507201 and the Dutch Organization for Applied Research (TNO) . This work reflects only the authors view. The authors thank Hans Dalderop and Jef Noijen for their technical support.",

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AU - van Biesen, Joris

AU - Huinink, Henk

AU - Fischer, Hartmut R.

AU - Adan, Olaf C.G.

N1 - Funding Information: This work was funded by the TKI project Dope4Heat with project number 1507201 and the Dutch Organization for Applied Research (TNO) . This work reflects only the authors view. The authors thank Hans Dalderop and Jef Noijen for their technical support.

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N2 - Potassium carbonate has recently been identified as a promising candidate for thermochemical energy storage. However, as for many salt hydrates, the reaction kinetics is limited, and moreover, the hydration transition is kinetically hindered due to a metastable zone, involving limited mobility. This work aims to improve mobility by using organic potassium dopants, it shows that doping with potassium-formate and -acetate, can accelerate the hydration reaction. It has been shown that these dopants can enhance the hydration rate by two mechanisms i.e. introducing mobility due to adsorption of more water or introducing more surface area, where water adsorption can occur. This work opens up new possibilities for organic dopants to enhance the performance of salt hydrates.

AB - Potassium carbonate has recently been identified as a promising candidate for thermochemical energy storage. However, as for many salt hydrates, the reaction kinetics is limited, and moreover, the hydration transition is kinetically hindered due to a metastable zone, involving limited mobility. This work aims to improve mobility by using organic potassium dopants, it shows that doping with potassium-formate and -acetate, can accelerate the hydration reaction. It has been shown that these dopants can enhance the hydration rate by two mechanisms i.e. introducing mobility due to adsorption of more water or introducing more surface area, where water adsorption can occur. This work opens up new possibilities for organic dopants to enhance the performance of salt hydrates.

KW - Organic potassium salt doping

KW - Potassium acetate

KW - Potassium carbonate

KW - Potassium formate

KW - Surface mobility

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JO - Solar Energy Materials and Solar Cells

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Accelerating the hydration reaction of potassium carbonate using organic dopants

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