B_2H_6, Si_2H_6, PH_3及びH_2SeのCuOとの反応機構

概要

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Chemical reactions of diborane(B_2H_6), disilane(Si_2H_6), phosphine(PH_3)and hydrogen selenide(H_2Se) with copper(II)oxide(CuO)at room temperature were investigated. B_2H_6 and Si_2H_6 were chemically adsorbed on CuO surface and formed B-O bond and Si-O bond, respectively. The adsorbed species on the CuO surface prevented the hydrides from diffusing into the inner part of CuO. On the other hand, PH_3 and H_2Se reacted with CuO forming H_2O and Cu_3P and CuSe, respectively. In these cases oxygen atoms were removed from CuO particles as water molecules, and the reaction proceeded to the inner part of CuO particles. The reactions of hydride gases with CuO are divided into two types : the surface reaction and bulk reaction types, depending on the enthalpy of formation of the oxide per oxygen atom which is supposed to be produced by the reaction.
社団法人日本セラミックス協会の論文
1997-09-01