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Title: High temperature CO2 sequestration using solid absorbents : lithium zirconate and Mg-Al hydrotalcite
Author: Iwan, Alina Agnieszka
ISNI:       0000 0004 2674 8412
Awarding Body: University of bath
Current Institution: University of Bath
Date of Award: 2008
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Sorption enhanced steam reforming of methane (SESMR) is realised by combining the reforming and shift reactions with in-situ removal of the produced CO2. This combination produces a favourable shift in thermodynamic equilibrium towards hydrogen production and enables lower operational temperature and pressure. Also by removal of the main by-product, CO2, the requirements for hydrogen purification decrease. The process allows the release of CO2 in a concentrated form for further lestration if necessary. The removal of CO2 can be achieved by using solid acceptors which can reversibly sorb CO2 from the reaction zone and release it under favourable conditions. This work is focused on developing materials suitable for the SESMR ess, i.e. selective acceptors for COo at temperatures between 450-500 °C, 0-1 bar partial CO2 pressure under dry conditions. Sorption of CO2 on two candidate materials: hydrotalcites and lithium zirconate based materials, was studied.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available