ETHYLENE REMOVER, PRODUCTION THEREOF AND SYNTHETIC RESIN FILM FOR REMOVING ETYLENE

摘要

PURPOSE:To considerably enhance ethylene removing ability per unit weight by wrapping vegetables and fruits with a film of synthetic resin kneaded with a catalyst obtd. by supporting palladium on a silica alumina carrier and using the catalyst for ethylene remover. CONSTITUTION:Palladium is supported on a silica alumina carrier having 5/1-1/5 weight ratio of silica/alumina by 0.01-2.0wt.% of the amt. of the carrier in the form of a compd. or a mixture of two or more kinds of compds. selected among inorg. acid salts of palladium and ammonium complex salts of them. At this time, the palladium compd. is impregnated into the carrier under basic conditions using 1-3wt.% aq. ammonia soln. and the impregnated carrier is calcined at 300-750 deg.C to obtain an ethylene remover. The freshness of vegetables and fruits can be maintained by wrapping with a film of synthetic resin (thermoplastic resin) kneaded with 0.05-2.0wt.% of the ethylene remover basing on the amt. of the resin. The ethylene remover does not color the resin or affect the transparency of the resin.