Desorption in Ammonia Manufacture from Stranded Wind Energy

Deepak K. Ojha; Matthew J. Kale; Paul J. Dauenhauer; Alon McCormick; E. L. Cussler

doi:10.1021/acssuschemeng.0c03154

Desorption in Ammonia Manufacture from Stranded Wind Energy

Deepak K. Ojha, Matthew J. Kale, Paul J. Dauenhauer, Alon McCormick, E. L. Cussler

Chemical Engineering and Materials Science

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Ammonia made with hydrogen from sustainable wind energy can be separated from unreacted hydrogen and nitrogen by absorption in magnesium chloride. The absorption is rapid, but desorption can be slower. This work shows that the mechanism of desorption involves two steps: (i) decomposition of ammines to make ammonia and (ii) solid-state diffusion of the produced NH3. With current absorbents, the diffusion step is usually controlling. These experiments suggest the best operating conditions for a pilot scale, wind-powered ammonia separation and provide a strategy for improving the metal-chloride absorbent.

Original language	English (US)
Pages (from-to)	15475-15483
Number of pages	9
Journal	ACS Sustainable Chemistry and Engineering
Volume	8
Issue number	41
DOIs	https://doi.org/10.1021/acssuschemeng.0c03154
State	Published - Oct 19 2020

Bibliographical note

Publisher Copyright:
© 2020 American Chemical Society.

Keywords

Kinetics
Mass transfer
Pilot testing
Process design
Renewable ammonia

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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title = "Desorption in Ammonia Manufacture from Stranded Wind Energy",

abstract = "Ammonia made with hydrogen from sustainable wind energy can be separated from unreacted hydrogen and nitrogen by absorption in magnesium chloride. The absorption is rapid, but desorption can be slower. This work shows that the mechanism of desorption involves two steps: (i) decomposition of ammines to make ammonia and (ii) solid-state diffusion of the produced NH3. With current absorbents, the diffusion step is usually controlling. These experiments suggest the best operating conditions for a pilot scale, wind-powered ammonia separation and provide a strategy for improving the metal-chloride absorbent.",

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AU - Cussler, E. L.

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AB - Ammonia made with hydrogen from sustainable wind energy can be separated from unreacted hydrogen and nitrogen by absorption in magnesium chloride. The absorption is rapid, but desorption can be slower. This work shows that the mechanism of desorption involves two steps: (i) decomposition of ammines to make ammonia and (ii) solid-state diffusion of the produced NH3. With current absorbents, the diffusion step is usually controlling. These experiments suggest the best operating conditions for a pilot scale, wind-powered ammonia separation and provide a strategy for improving the metal-chloride absorbent.

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Desorption in Ammonia Manufacture from Stranded Wind Energy

Abstract

Bibliographical note

Keywords

UN SDGs

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