查询词典 orthosilicate

On such basis, a new porous structured heteropoly acid catalyst is obtained by salt-gel reaction, using tetraethyl orthosilicate as the silicon source.

在此基础上，以正硅酸乙酯为硅源，利用&盐—凝胶&法得到一种新型介孔结构的杂多酸催化剂。

In this paper, a series of polysiloxanes crosslinked by tetraethyl orthosilicate, polyurethanes crosslinked by trimethanol propane, and polyurethane/polysiloxane IPNs were synthesized at the existence of catalyst at room temperature.

本论文室温催化合成了聚硅氧烷、聚氨酯阻尼弹性体、以及一系列不同结构和组成比例的聚氨酯/聚硅氧烷IPN体系，分析了聚硅氧烷、聚氨酯和IPN的力学性能和动态力学性能。

Furthermore, tetraethyl orthosilicate was added to improve the structure of BMBSE film. A hydrophobic composite film of BMBSE/TEOS was successfully prepared on 0Cr18Ni9 stainless steels substrates.

并进一步采用正硅酸乙酯对BMBSE膜的结构进行改进，在不锈钢表面制备了具有一定疏水性的更加致密的BMBSE/TEOS复合膜。

Porous carbons were prepared with tetraethyl orthosilicate as the silica template and solube starch and β-cyclodextrin as carbon precursor by sol-gel method.

以正硅酸乙酯为模板硅源，β-环状糊精和可溶性淀粉分别为碳前驱体，运用溶胶-凝胶法制备了多孔炭材料。

Nanosize SiO_(2) particles were prepared using water-in-oil microemulsion method in polyether polyol with hydrolysis and condensation reactions of tetraethyl orthosilicate by means of controlling molar ratio of water to surfactant and selecting moderate hydrolysis temperature.

选择适当的乳化剂和水解温度以及控制水与乳化剂的摩尔比，采用W/O型微乳液法在聚醚多元醇中通过正硅酸乙酯的水解、缩合反应合成了纳米SiO2。

The sol-gel solution was prepared by mixing ethyl orthosilicate, absolute alcohol and 0.1molL^(-1) HCl in a definite proportion, and adding an appropriate amount of silicotungstic acid as active material, strring for 30min and then standing for 24h at room temperature.

溶胶－凝胶溶液系将正硅酸乙酯、无水乙醇及0.1molL^(-1)盐酸按一定比例混合后加适量的硅钨酸作为活性物质，搅拌30min混匀后在室温放置24h配成。

A kind of spherical microporous silica was synthesized by precipitation with the tetraethyl orthosilicate as a silica precursor and the block ploymer P_(123 as a template. The characterizations by the BET, FSEM and XRD showed that the spherical microporous silica has diameter of 3～4 μm, amorphous pore size of 0.9～1 nm and the specific area of 216±

以正硅酸乙酯作硅源，嵌段共聚物为模板剂，采用沉淀法合成均匀的实心球形二氧化硅微孔材料，BET、FSEM和XRD等表面分析手段表征表明，我们合成的二氧化硅微孔材料具有3～4μm的粒径和不规则分布的0.9～1nm的孔径以及216±3.5m2/g的比表面积。

Silica coating was prepared by atmospheric pressure chemical vapor deposition taking HP40 steel plate as substrate,tetraethyl orthosilicate as silica source,and air as carrier gas and diluent.

以正硅酸乙酯为硅源物质、空气为载气和稀释气，采用常压化学气相沉积法在HP40钢表面制备了SiO2涂层；采用扫描电子显微镜和能量色散能谱表征了SiO2涂层的组织结构和表面形貌；考察了在乙烯裂解的工艺条件下SiO2涂层的结焦抑制能力。

This investigation was prepared MCM-41 catalyst films on silicon wafer in ammonia media, using tetraethyl orthosilicate as a precursor and cetyltrimethylammonium bromide as a surfactant.

中文摘要本研究以四乙基氧矽溶液为矽酸盐的来源，溴化十六烷基三甲基铵盐为界面活性剂，在氨水的环境下，制备MCM-41触媒薄膜於矽晶片上。

The SiO2 gel was prepared through hydrolysis and condensation polymerization of tetraethyl orthosilicate and H2O. The gel and LaNi4.25Al0.75 powders were mixed completely and heated at 500 ℃ for 2 h to obtain samples.

摘 要：以正硅酸乙酯为原料，采用溶胶凝胶法制备多孔SiO2凝胶，将LaNi4.25Al0.75合金粉与凝胶混合在500℃进行真空烧结。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。