Three kinds of Ni-Mo catalyst for recycle solvent hydrogenation have been used at 1t/d PSU. It was shown that thier deactivation behavior were different. In this report, thier deactivation behavior was compared by use of the predictable equation of catalyst life. To explicate the difference of deactivation behavior, that is caused by deactivation factor and catalyst property, characterization of used catalyst is estimated by means of XPS and EPMA.
