正硅酸乙酯 的英文怎麼說
中文拼音 [zhēngguīsuānyǐzhǐ]
正硅酸乙酯
英文
tetraethylorthosilicate-
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
結果使基質和復合物的制備在比傳統的固相反應法低得多的溫度下和比常規的溶膠凝膠法短得多的時間里完成；五、對基質及復合物的干凝膠、粉體和燒結體進行了ir 、 dta 、 xrd 、 seni及交流阻抗譜表徵，研究結果表明：在溶膠向凝膠的轉化過程中同時存在著正硅酸乙酯自身的聚合作用和檸檬酸鹽絡合物之間的聚合作用：干凝膠向產物粉體的轉化在400600c之間進行；基質li 。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
實驗分別以鈦酸丁酯和正硅酸乙酯為先驅劑，硝酸為催化劑，硝酸銀引入銀離子，以溶膠?凝膠法配製摻銀tio _ 2 、 sio _ 2溶膠。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
討論了醇、水、氨、正硅酸乙酯、溫度、陳化時間等多種影響因素對顆粒粒徑及粒徑分佈的影響，得出了制備超細二氧化硅粒子的優化的工藝條件。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
在溶膠-凝膠法制備莫來石粉末過程中，我們以正硅酸乙酯和硝酸鋁為主要原料，採用該法制得了莫來石粉末，該粉末純度很高，粒徑較小並且分佈均勻，我們按該法制得了約600g莫來石粉料，為接下來的實驗打下了基礎。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鋁為原料，採用溶膠一凝膠法結合co2超臨界流體低溫乾燥技術合成莫來石超細粉的制備參數控制，並利用xrd 、 tem和bet 、技術研究了溶膠-凝膠過程中溶膠膠粒大小的控制和凝膠結構的控制及超臨界流體乾燥技術的控制。分享友人