@article{oai:kitami-it.repo.nii.ac.jp:00006653, author = {Tohru, KANNO and Akio, NAKAGAWA and Masayoshi, KOBAYASHI}, issue = {2}, journal = {北見工業大学研究報告}, month = {Mar}, note = {application/pdf, The contribution of the spillover of hydrogen adsorbed on a silica gel supported platinum catalyst to gas phase mass transport has been studied under atmospheric pressure at 30?300℃. The amount of spiltover hydrogen was evaluated by the hydrogenation of ethylene, and the spiltover hydrogen was characterised by the temperature programmed desorption spectrum. The spillover of hydrogen from platinum to the SiO_2 surface enhanced gas phase diffusion more than 60% at 90℃. The higher percentage of platinum supported on SiO_2 increased the temperature dependency of the diffusion coefficient.}, pages = {219--231}, title = {Evaluation of Hydrogen Spillover in Diffusion Processes*}, volume = {21}, year = {1990} }