Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1276950 | International Journal of Hydrogen Energy | 2010 | 8 Pages |
Abstract
A collaborative effort between Intelligent Energy and Cal Poly Pomona has developed an adsorption enhanced reformer (AER) for hydrogen generation for use in conjunction with fuel cells in small sizes. The AER operates at a lower temperature (about 500 °C) and has a higher hydrogen yield and purity than those in the conventional steam reforming. It employs ceria supported rhodium as the catalyst and potassium-promoted hydrotalcites to remove carbon dioxide from the products. A novel pulsing feed concept is developed for the AER operation to allow a deeper conversion of the feedstock to hydrogen. Continuous production of near fuel-cell grade hydrogen is demonstrated in the AER with four packed beds running alternately. In the best case of methane reforming, the overall conversion to hydrogen is 92% while the carbon dioxide and carbon monoxide concentrations in the production stream are on the ppm level. The ratio of carbon dioxide in the regeneration exhaust to the one in the product stream is on the order of 103.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
K. Duraiswamy, Anand Chellappa, Gregory Smith, Yi Liu, Mingheng Li,