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。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。