Issue 100, 2016, Issue in Progress

Recent advancements in chemical looping water splitting for the production of hydrogen

Abstract

Chemical looping water splitting or chemical looping hydrogen is a very promising technology for the production of hydrogen. In recent years extensive research has enabled remarkable leaps towards a successful integration of the chemical looping technology into a future hydrogen infrastructure. Progress has been reported with iron based oxygen carriers for stable hydrogen production capacity over consecutive cycles without significant signs of degradation. The high stability improvements were achieved by adding alien metal oxides or by integrating the active component into a mineral structure which offers excellent resistance towards thermal stress. Prototype systems from small μ-systems up to 50 kW have been operated with promising results. The chemical looping water splitting process was broadened in terms of its application area and utilization of feedstocks using a variety of renewable and fossil resources. The three-reactor system was clearly advantageous due to its flexibility, heat integration capabilities and possibility to produce separate pure streams of hydrogen, CO2 and N2. However two-reactor and single fixed-bed reactor systems were successfully operated as well. This review aims to survey the recently presented literature in detail and systematically summarize the gathered data.

Graphical abstract: Recent advancements in chemical looping water splitting for the production of hydrogen

Article information

Article type
Review Article
Submitted
23 Aug 2016
Accepted
29 Sep 2016
First published
10 Oct 2016
This article is Open Access
Creative Commons BY license

RSC Adv., 2016,6, 98267-98296

Recent advancements in chemical looping water splitting for the production of hydrogen

G. Voitic and V. Hacker, RSC Adv., 2016, 6, 98267 DOI: 10.1039/C6RA21180A

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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