摘要
乙二胺四乙酸铁（Ⅲ）催化分解过氧化氢的反应机理朱伟长（华东冶金学院化工系，马鞍山２４３００２）关键词乙二胺四乙酸铁（Ⅲ），过氧化氢，催化分解，反应机理过氧化氢酶广泛存在于生物组织中，它是相对分子量约为２５×１０４的血红素铁蛋白，分子结构中包含４个Ｆｅ...
It has been suggested that the decomposition of hydrogen peroxide catalysed by ethylenediaminetetraacetatoiron(Ⅲ) ((Fe Ⅲ·EDTA) -) belongs to a radical chain reaction. The intermediates include (Fe Ⅲ·EDTA·HO 2) 2- , (Fe Ⅱ·EDTA) 2- and radicals H O· 2 and H O· . When the pH value of the reaction medium is lower, the chain initiation step decides the reaction rate; when pH value increases, then gradually, it is the chain propagation step that decides the reaction rate. The existence of hydroxyl radical has been confirmed according as sodium benzoate traps H O[DD(-30x]· to give sodium salicylate.
出处
《催化学报》
SCIE
CAS
CSCD
北大核心
1997年第1期83-86,共4页
关键词
乙二胺四乙酸铁(Ⅲ)
过氧化氢
催化分解
反应机理
Ethylenediaminetetraacetatoiron(Ⅲ), Hydrogen peroxide, Catalytic decomposition, Reaction mechanism
