Catalysis of the Ortho-Parahydrogen Conversion
Certain metallic oxides such as chromic oxide, cerium oxide, and neodymium oxide have been reported as highly effective catalysts for ortho-parahydrogen conversion because of their paramagnetic properties. We were familiar with the performance of chromic oxide on alumina pellets since this has been successfully used in the CEL liquefier s over a period of several years. However, no systematic study of catalysts for this application was available and it seemed likely that a material more effective than the chromic-alumina catalyst (actually developed for the petroleum industry) might be found.
KeywordsSpace Velocity Cerium Oxide Ferric Oxide Chromic Oxide Liquid Hydrogen
Unable to display preview. Download preview PDF.