Effets thermiques et chimiques observés avec des catalyseurs à l’oxyde de chrome sur alumine

Surface Chemistry of Chromic Oxide

“…There is, however, a variety of evidence in the literature that chemical changes in the surface layer may occur. [9][10][11][12][13][14][15] The adsorption of hydrogen and oxygen on chromia has been investigated by earlier workers.9-11•13 •15 It was considered necessary to repeat and extend these studies, however, partly because of many inconsistencies in the earlier results, and partly to have complete adsorption data on the same batch of chromic oxide which has been used in a number of studies in this Laboratory.…”