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    • 46. 发明公开
    • 과산화수소의 직접적 제조방법
    • 过氧化氢的直接制备方法
    • KR1020020032225A
    • 2002-05-03
    • KR1020000063272
    • 2000-10-26
    • 한국화학연구원
    • 박상언황진수이철위장종산유중환채희석
    • C01B15/01
    • C01B15/023B01J23/44B01J29/7007
    • PURPOSE: Provided is a direct preparation method of hydrogen peroxide, which is characterized in that the hydrogen carrier quinone and its derivatives are fixed to the channels of zeolite by anchoring and grafting method and the product is made in aqueous solution. Usual process uses solvent dissolving quinone and hydroquinone and in the above process the quinones are fixed to the zeolite more than 2 times than the usual process, making the method improved in the stability and reactivity of the catalyst. CONSTITUTION: The method includes the steps of: making the catalyst by anchoring or grafting quinone or its derivatives into the zeolite which is ion-exchanged with VIII group transition metals and carries them; and directly synthesizing hydrogen peroxide at 0-90deg.C by introducing reducing agent and oxygen gas. The above anchoring and grafting is conducted by using as anchoring agent tetrahydrofuran and dicyclohexylcarbodiimide and pre-grafting to zeolite with 3-aminopropyltrimethoxysilane and trimethoxysilylpropyldiethylenetriamine. The above zeolite is selected from Y, Beta, L or MCM-41 structure and Si/Al ratio is 1-160. The cationic form of zeolite is selected from Na, K and H while VIII group transition metal is chosen from Rd, Pt, Rh, Ir, Fe, Cu and Ni. The reducing agent is selected from hydrogen, ammonia and alcohol. The catalyst is washed with benzene, alcohol and acetone, and the acid is added to the above aqueous solution, the acid being chosen from 0.001-1N sulfuric acid, acetic acid and hydrochloric acid.
    • 目的:提供过氧化氢的直接制备方法,其特征在于氢载体醌及其衍生物通过锚定和接枝方法固定在沸石的通道上,产物在水溶液中制备。 通常的方法使用溶剂醌和氢醌,在上述方法中,将醌固定在沸石上,比通常的方法多2倍,使得该方法提高了催化剂的稳定性和反应性。 方法:该方法包括以下步骤:通过将醌或其衍生物锚固或接枝到与VIII族过渡金属离子交换的沸石中来进行催化,并携带它们; 并通过引入还原剂和氧气直接合成0-90℃的过氧化氢。 上述锚固和接枝通过使用四氢呋喃和二环己基碳二亚胺作为锚固剂并用3-氨基丙基三甲氧基硅烷和三甲氧基甲硅烷基丙基二亚乙基三胺预接枝到沸石上进行。 上述沸石选自Y,β,L或MCM-41结构,Si / Al比为1-160。 沸石的阳离子形式选自Na,K和H,而VIII族过渡金属选自Rd,Pt,Rh,Ir,Fe,Cu和Ni。 还原剂选自氢,氨和醇。 催化剂用苯,醇和丙酮洗涤,酸加入到上述水溶液中,酸选自0.001-1N硫酸,乙酸和盐酸。