寡糖前体的混合物的组合物的催化氢解及其用途
Manno precursors are a mixture of monosaccharides and trisaccharides. They are important precursors of many complex carbohydrates, such as glycogen and cellulo. This article mainly introduces the catalytic hydrogenolysis of manno precursors mixed with comonomer and its application.
一、催化氢解
1.1原理
Manno precursor mixed with comonomer catalytic hydrogenolysis is a catalytic reaction in which hydrogen is ud to cleave the manno precursor molecules, with the help of a catalyst. During this reaction, hydrogen first transfers to the catalyst by breaking the chemical bond in the manno precursor molecule, then combines with the carbon and hydrogen atoms in the molecule to generate an active hydrogen species. The active hydrogen species further reacts with the manno precursors and monomers, producing the desired product.
饥荒门怎么做1.2催化剂
The catalyst ud in manno precursors mixed with comonomer catalytic hydrogenolysis is usually a metal or a transition element compound. The most commonly ud catalysts are palladium, copper-amine, copper-zinc-sodium, ammonia-iron boron, copper-amine-sodium, nickel-alumina, and titanium-zirconia. The catalysts can effectively catalyze the reaction in a very short time and the yields are very high.
1.3反应条件
为什么一直做噩梦The reaction conditions of manno precursors mixed with comonomer catalytic hydrogenolysis include temperature, pressure, time and catalyst concentration. Usually, the temperature of the reaction is between 0℃ and 100℃, and the pressure is between 1 atm and 4 atm. The catalyst concentration is usually in the range of 0.001% to 0.01%. The reaction time is usually within 5 to 10 minutes.有得有失
二、应用
2.1 合成柔性羟基环糊精全成
Manno precursors mixed with comonomer catalytic hydrogenolysis can be ud to synthesize flexible hydroxycyclodextrins. Hydroxycyclodextrins can be widely ud as guest molecules in the organic synthesis of many organic molecules.
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2.2 生产乳糖、葡萄糖、及其降解产物履责
Manno precursors mixed with comonomer catalytic hydrogenolysis also can be ud to produce lacto, gluco and their degradation products. Lacto and gluco are important basic substances in the daily life. They can be ud as food ingredients or food supplement, or even as a medicine carrier.
2.3 合成聚糖及其衍生物
风的英语Manno precursors mixed with comonomer catalytic hydrogenolysis can also be ud to synthesize polysaccharides and their derivatives. The polysaccharides and their derivatives have a wide range of applications in food, pharmaceutical, textile and other in
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dustries.
总结
Manno precursor mixed with comonomer catalytic hydrogenolysis is a kind of catalytic reaction in which hydrogen is ud to cleave the manno precursor molecules, with the help of a catalyst. The most commonly ud catalysts are palladium, copper-amine, copper-zinc-sodium, ammonia-iron boron, copper-amine-sodium, nickel-alumina, and titanium-zirconia. The reaction conditions of manno precursors catalytic hydrogenolysis include temperature, pressure, time and catalyst concentration. This reaction can be ud to synthesize flexible hydroxycyclodextrin, produce lacto, gluco and their degradation products, as well as synthesize polysaccharides and their derivatives.
