机构地区: 仲恺农业技术学院化学化工学院绿色化工研究所
出 处: 《桂林工学院学报》 2007年第1期102-105,共4页
摘 要: 对合成含氢三烷氧基硅烷的主要方法进行了简要分析,用溶胶凝胶法制备了适合于直接合成含氢三乙氧基硅烷的纳米氢氧化铜催化剂,其粒径为18nm,比表面积29.5m^2/g,晶型为简单四方型,应用该催化剂在溶剂中以硅粉与气态醇反应合成含氢三乙氧基硅烷.结果表明,以YD-325为溶剂,反应温度为483K,催化剂用量为5.2%,硅粉粒度为45~63μm,含氢三乙氧基硅烷的选择性为98.9%,硅粉的转化率接近100%. The method of preparation hydrogenalkoxysilanes is reviewed. The nanometer copper (Ⅱ) hydroxide is prepared by sel-gel method. It is found to be a simple cubic crystal,with a particle diameter of 18 nm and a specific surface of 29.5 m^2/g. This catalyst is used in the direct synthesis hydrogenalkoxysilanes via silicone and gas alcohol under the solvent. It is demonstrated that the selectivity of hydrogenalkoxysilane is 98.9% and the silicon conversion nearly 100%, when reaction temperature is 483 K, YD -325 solvent ,catalyst content 5.2% and silicon particle diameter 45 -63 μm.