Abstract:
PURPOSE: A manufacturing method of copper nanoparticles and a manufacturing method of triazole compound which uses thereof as a catalyst are provided to synthesize water-soluble copper nanoparticles which is stable under a mild processing condition. CONSTITUTION: A manufacturing method of copper nanoparticles uses double block hydrophilic copolymers(10). The double block hydrophilic copolymer consists of active ionization blocks(11) and neutral blocks(12). The double block hydrophilic copolymer is poly(acrylic acid)-b-poly(ethylene oxide)(PAA-b-PEO). A manufacturing method of the copper nanoparticle comprises the following steps: manufacturing a mixture by stirring the double block hydrophilic copolymer and copper chloridation dihydrate; producing suspension by adding NaOH in the mixture; and adding hydrazine to the suspension while strongly stirring the mixture.
Abstract:
PURPOSE: A selective hydration method of nitriles is provided to promote reaction in natural water effectively, and to recycle the silver nanoparticle catalyst used in hydration under natural conditions. CONSTITUTION: A selective hydration method of nitriles comprises a step of generating a mixture by mixing silver nano particles, nitriles, and water, and a step of stirring the mixture. The molar ratio of the nitrile compound is 3mmol:389mmol - 3mmol:445mmol. The amount of the silver nanoparticles is 0.3-0.5 mol% on the basis of the mixture. The selective hydration method is conducted at 373-423 K, for 30-60 minutes. The nitrile compound is benzonitrile.
Abstract:
본발명은중성조건하에서은 나노입자촉매를사용하여니트릴화합물을아미드로수화시키는것에관한것으로, 본발명의구현예들에의한니트릴의수화방법은물을용매로사용하고, 은나노입자촉매를중성조건하에서재활용할수 있으므로공정에서환경에미치는영향을줄일수 있을뿐 아니라, 산업상이용가능성을증가시킬수 있다.