正硅酸乙酯 meaning in English
tetraethylorthosilicate
Examples
- The silver doped tio2 or sio2 sols are prepared through sol - gel method , ti ( oc4h9 ) 4 and si ( oc2hs ) 4 are chosen as precursors respectively , and hnos is catalyzer , agno3 is the second component for inducting silver ion
实验分别以钛酸丁酯和正硅酸乙酯为先驱剂，硝酸为催化剂，硝酸银引入银离子，以溶胶?凝胶法配制掺银tio _ 2 、 sio _ 2溶胶。 - It was demonstrated that the reaction temperature , solvent , concentration of the reactants and catalyst , ageing time affected the particle size and distribution . by controlling these factors or feeding teos step after step , monodispersed and spherical ultrafine sio2 powder could be prepared
讨论了醇、水、氨、正硅酸乙酯、温度、陈化时间等多种影响因素对颗粒粒径及粒径分布的影响，得出了制备超细二氧化硅粒子的优化的工艺条件。 - In the process of preparing mullite powder , we use teos and al ( no3 ) 3 as raw materials . the powder we prepared has high purity and its grain radius is relatively small and is distributed equality . by this method , we prepared about 600 g mullite powder and it provided basis for the next experiment
在溶胶-凝胶法制备莫来石粉末过程中，我们以正硅酸乙酯和硝酸铝为主要原料，采用该法制得了莫来石粉末，该粉末纯度很高，粒径较小并且分布均匀，我们按该法制得了约600g莫来石粉料，为接下来的实验打下了基础。 - Citric acid , taking the place of hno3 , solutes the substance which does not solute in solution , and it acts as the ligand of metallic ionic and the hydrolysis catalyst of si ( oc2h5 ) 4 , which reduces the pollution caused by no2 which forms at the decompose process of the hot treatment . by changing the means of calcine of the drier gel , choosing the suitable temperature to burn the gel , the high temperature calcine time is shorted , which solves the question of the long period calcine . so the preparation process of the matrix and composite was finished by using more lower temperature than the traditional solid state reaction and more shorter time than the traditional sol - gel process
结果使基质和复合物的制备在比传统的固相反应法低得多的温度下和比常规的溶胶凝胶法短得多的时间里完成；五、对基质及复合物的干凝胶、粉体和烧结体进行了ir 、 dta 、 xrd 、 seni及交流阻抗谱表征，研究结果表明：在溶胶向凝胶的转化过程中同时存在着正硅酸乙酯自身的聚合作用和柠檬酸盐络合物之间的聚合作用：干凝胶向产物粉体的转化在400600c之间进行；基质li 。 - Abstract : this paper dicussed the preparative parameteres synthesized mullite ultrafine powder by sol - gel and co2 scfd ( supercritieal fluid drying ) method from teos and al ( no3 ) 3 ? 9h2o as raw materials . the control parameteres of the colloidal particle size forming in sol - gel process and the gel structure and the scfd were studied by , xrd , tem and bet techmiques
文摘:研究了以正硅酸乙酯和硝酸铝为原料，采用溶胶一凝胶法结合co2超临界流体低温干燥技术合成莫来石超细粉的制备参数控制，并利用xrd 、 tem和bet 、技术研究了溶胶-凝胶过程中溶胶胶粒大小的控制和凝胶结构的控制及超临界流体干燥技术的控制。