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The hydrogenation of unsaturated polymers is a commercially important process for improving the properties of the “parent” polymers[1].Hydrogenated polystyrene (HPS),also named as polyvinylcyclo- hexane (PVCH),has a higher glass transition temperature (147℃) than polystyrene (PS,105℃),which may enable the utility of HPS at higher temperature than PS.However,lots of attempts to hydrogenate PS with powder catalysts have been rewarded with limited success because of the high viscosity of the system[2].This paper aim at developing structured catalyst with high activity and strength.Porous ceramics using as catalyst supports were prepared by Schwartzwalder replica method with open,network structured polymer sponges as the templates.Effects of the rheological behavior of the slurry on coating quality and the properties of porous ceramics such as strength,density,and microstructure were investigated in details.The coating quality and strength were found to depend strongly on the slurry viscosity.The porous ceramics displayed a remarkable increase in the compression strength as the solids content increased.The optimum solid content and polyvinyl acetate (PVA) content were found to be 77 and 1.60 wt%,respectively.The compression strength of the porous ceramics was 3.64MPa.The noble metal,e.g,Pd,Pt,Ru,Rh,supported porous ceramic catalyst obtained by impregnation method was applied in the hydrogenation of PS.The porous catalyst showed good performance and the hydrogenation degree (HD) was 99.5%.The results showed that the porous catalyst allowed rapid diffusion of the polymer and accelerated the hydrogenation rate.