Synthesis of porous ceramics with catalytic property from preceramic polymers

出崎 亮; Colombo, P.*

no journal, , 

Fabrication of a porous Si-O-C material with catalytic property from a blend consisted of polyphenylmethylsiloxane (PPMS) and nickel (Ni) compounds was examined. In order to fabricate a catalyst material, it is indispensable to control pore properties such as pore size distribution and open porosity because they are closely related with the catalytic performance. In this work, a Ni-containing porous Si-O-C material was synthesized from a blend of PPMS, Ni(II) acetylacetonate and azodicarbonamide (a blowing agent), and the effects of formulating ratio of blend, forming condition and pyrolysis condition on the pore properties were investigated. It was found that the pore size distribution is affected by formulating ratio of blend and forming condition. Finally, pore size in the range from 100 to 500 micro meters was obtained by the optimization of these conditions.