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.
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:500719 |
| Date | January 2008 |
| Creators | Iwan, Alina Agnieszka |
| Publisher | University of Bath |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
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