Title
Study of dimensional changes during redox cycling of oxygen carrier materials for chemical looping combustion
Author
Fossdal, A.
Darell, O.
Lambert, A.
Schols, E.
Comte, E.
Leenman, R.N.
Blom, R.
Publication year
2015
Abstract
Dimensional and phase changes of four candidate oxygen carrier materials for chemical looping combustion are investigated by dilatometry and high-temperature X-ray diffraction during four redox cycles. NiO/Ni2AlO4 does not exhibit significant dimensional changes during cycling, and it is shown that the support material also contributes to the oxygen carrying capacity. CaMn0.875Ti0.125O3 exhibited good chemical stability and small dimensional changes upon redox cycling. Cu0.95Fe1.05AlO4 showed a one-dimensional expansion of 9% after the experiments, and significant phase changes were seen. The complex set of reactions occurring during redox cycling of ilmenite (FeTiO3) was shown to be accompanied by dimensional changes, giving non-steady dimensional changes during the oxidation and reduction steps.
Subject
Fluid Mechanics Chemistry & Energetics
PID - Process & Instrument Development
TS - Technical Sciences
Energy Efficiency
Energy
Energy / Geological Survey Netherlands
Chemical stability
Combustion
Oxygen
Titanium
Chemical looping combustion
Dimensional changes
High temperature X-ray diffraction
One-dimensional expansion
Oxidation and reduction
Oxygen Carrier
Redox cycling
Support materials
Redox reactions
To reference this document use:
http://resolver.tudelft.nl/uuid:022b355b-e47f-4a85-8190-d83e2073f56f
TNO identifier
522524
Publisher
American Chemical Society
ISSN
0887-0624
Source
Energy and Fuels, 29 (1), 314-320
Document type
article