NONWOVEN FABRIC-SHAPED CATALYST

摘要

PURPOSE:To stably hold catalyst particles and to enhance catalytic activity by forming porous fibers having catalyst particles held thereto into a three- dimensional reticulated structure along or along with other fibers to obtain a nonwoven fabric-shaped catalyst. CONSTITUTION:A polymer generating phase separation with respect to a fiber forming polymer and catalyst particles are dispersed in and mixed with the fiber forming polymer and the resulting mixture is spun and stretched to obtain porous fibers having catalyst particles held therein. These porous fibers are formed into a fiber web alone or along with other fibers using a carding machine and this web is subjected to fiber entangling treatment using a needle punching method or a water stream entangling method to form a nonwoven fabric-shaped catalyst having a reticulated structure wherein fibers are entangled three-dimensionally. The fineness of the aforementioned porous fibers is pref. about 0.5-30 denier and the compounding amount of the porous fibers in the nonwoven fabric-shaped catalyst is pref. about 25wt.% or more.