National Institute for Materials Science

Japan Science and Technology Agency

Satoshi Kameoka

Masami Terauchi

An-Pang Tsai

Anpang Tsai

Tomofumi Kimura

A Raney-type metal porous material of which at least the inner surface of the pores constituting the porous structure is an alloy of the skeletal metal constituting it and a metal differing from the skeletal metal. The invention has made it possible to alloy a Raney-type metal with a porous structure, to realize a novel method of enabling remarkable enhancement of the function and the activity of the alloy based on the porous structure thereof, and to use the alloy as catalysts, etc.

Porous object of Raney metal, process for producing the same, and catalyst

A method of manufacturing a copper-based catalyst having high activity and superior heat resistance and a catalyst used for steam reforming of methanol has Al alloy particles each having an oxide surface layer containing fine copper oxide particles. The Al alloy particles are produced by leaching Al alloy particles with an aqueous solution. The Al alloy particles are prepared by pulverizing a bulky Al alloy having a quasicrystalline phase, the quasicrystalline phase being represented by the formula AlCuTM(where y is 10 to 30 atomic percent, z is 5 to 20 atomic percent, and TM indicates at least one of transition metals other than Cu). In the catalyst, the oxide surface layer containing fine copper oxide particles is formed by adjusting leaching conditions so as to form an oxide surface layer, which contains dispersed fine Cu particles and which is composed of an Al oxide and a transition metal oxide, on the surface of each of the Al alloy particles. The leached Al alloy particles are heat treated in an oxidizing atmosphere, whereby some or all of the fine Cu particles contained in the oxide surface layer are converted into the fine copper oxide particles.

Growing community of inventors

Tsukuba, Japan

Satoshi Kameoka