Differential heats of H 2 adsorption on γNo 2N catalysts were studied by using microcalorimetry.Samples with high and medium surface areas (90 and 17 m2·g -1 ) present a homogeneous energetic distribution of sur...Differential heats of H 2 adsorption on γNo 2N catalysts were studied by using microcalorimetry.Samples with high and medium surface areas (90 and 17 m2·g -1 ) present a homogeneous energetic distribution of surface sites,which corresponds with the preferential orientation of their (200) planes.Molybdenum nitride with low surface area (8 m2·g -1 ) displays a heterogeneous energetic distribution of H 2 adsorption sites.The higher initial differential heat of hydrogen adsorption observed for the low surface Mo nitride was attributed to species adsorbed on surface sites associated with the (111) plane.展开更多
文摘Differential heats of H 2 adsorption on γNo 2N catalysts were studied by using microcalorimetry.Samples with high and medium surface areas (90 and 17 m2·g -1 ) present a homogeneous energetic distribution of surface sites,which corresponds with the preferential orientation of their (200) planes.Molybdenum nitride with low surface area (8 m2·g -1 ) displays a heterogeneous energetic distribution of H 2 adsorption sites.The higher initial differential heat of hydrogen adsorption observed for the low surface Mo nitride was attributed to species adsorbed on surface sites associated with the (111) plane.
