The SiO2/ TiO2 composite nanoparticle materials were prepared by the hydrolysis of tetrabutyl titanate and tetraethyl orthosilicate. On this basis dispersing such nanoparticles into the aliphatic polyurethane to prepare a novel polyurethane-SiO2/ TiO2 composite coatings.

Nanometer silica ( average particle size 60~ 100 nm) has been prepared by hydrolysis and condensation of tetraethyl orthosilicate, and then incorporated with proper amount of surfactant, cetyltrimethyl ammonium bromide ( CTAB).

通过原硅酸四乙酯的水解和缩合，并加入适量的表面活性剂十六烷基三甲基溴化铵（CTAB），制得了纳米二氧化硅（平均粒径60～100nm）。

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Single-walled carbon nanotubes ( SWNTs) were continuously synthesized by floating pyrolysis method in the temperature range of 850-1160 ℃ by using tetraethyl orthosilicate ( TEOS) as raw material, ferrocene as the precursor of Fe particles.

以正硅酸乙酯（TEOS）为前驱体，二茂铁为催化剂前驱体，利用气相流动催化热解法在850～1160℃连续合成了单壁碳纳米管（SWNTS）。

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Cu-rich Cu/ SiO_2 nanocomposite aerogels, in which mass fraction of Cu could reach as high as 66%, were firstly prepared by sol-gel process of Cu-containing tetraethyl orthosilicate ( CuTEOS).

采用含铜硅酸乙酯（CuTEOS）进行溶胶-凝胶反应来制备高Cu含量的Cu/SiO2纳米复合气凝胶，复合气凝胶中的Cu含量可在小于66%（质量分数）的范围内调节。

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The main work is as follows: Mesoporous SiO2 was synthesized in acidic condition using CTAB as template and tetraethyl orthosilicate ( TEOS) as inorganic precursor, which characterized by scanning electron microscopy and infrared spectrometry.

本论文主要工作如下：1、以CTAB为模板分子，正硅酸乙酯（TEOS）为硅源，在酸性条件下合成出介孔SiO2，利用扫描电镜和红外光谱进行了表征。

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Activity of the catalyst was significantly improved after being treated with tetraethyl orthosilicate ( TEOS), which made it more lipophilic, with benzene yield of up to 25.6% at 600 ℃.

催化剂进一步用正硅酸乙酯处理后，其表面变得更亲油，脱氢活性明显改善，600℃时，环已烷脱氢产物苯的收率可达25.6%。

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Nano-silica was prepared by the sol-gel method with the hydrolysis and condensation of tetraethyl orthosilicate ( TEOS), and incorporated ammonia chloride ( NH_4Cl) as cationic surfactant.

采用溶胶-凝胶技术，利用正硅酸乙酯的水解和缩合反应，用NH4Cl作为阳离子表面活性剂，在短时间内制备了纳米SiO2粉末。

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In this study, mesoporous CDs/ silica composites were prepared through co-hydrolysis of organosilane-functionalized carbon dots and tetraethyl orthosilicate.

本论文采用简单的共水解方法，利用硅烷化碳点和正硅酸乙酯为前驱物，制备了碳点／二氧化硅介孔复合材料。

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Polyimide and polyimide/ SiO2 hybrid membranes were prepared via sol-gel process while Tetraethyl orthosilicate ( TEOS) was added as inorganic precursor.

以正硅酸乙酯为无机前驱体，采用溶胶-凝胶法制备了聚酰亚胺／SiO2无机杂化膜。

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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。

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The influence of H_2O, catalyst, solvent and composition of Cu-containing tetraethyl orthosilicate on the sol-gel process was discussed.

研究了水量、催化剂浓度、溶剂量及含铜硅酸乙酯的组成对溶胶-凝胶过程的影响。

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Different thickness of SiO2-encapsulating layer was fabricated by the hydrolysis of tetraethyl orthosilicate in isopropanol solution.

再通过正硅酸乙酯在异丙醇溶液中水解包覆了不同厚度的Si02层。

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Tetraethyl Orthosilicate were chosen as precursors for SiO2 sol.

采用金属醇盐正硅酸乙脂为先驱体配制Si02溶胶。

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The new systems are compared with the traditional vulcanizing system of Tetraethyl orthosilicate/ Dibutyltin dilaurate.

并和传统的正硅酸乙酯/二月桂酸二丁基锡（T&12）硫化体系进行了比较。

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Preparation of Silica Films from Tetraethyl Orthosilicate Sol-Gel Process Catalyzed with Acid

酸催化正硅酸乙脂溶胶-凝胶二氧化硅薄膜的制备

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The composite silica microsphere was obtained through the polymerization of urea and formaldehyde occurred in the silica sol that prepared from the hydrolyzation of tetraethyl orthosilicate.

以甲醛与尿素作为单体在正硅酸乙酯水解所得的氧化硅溶胶中进行聚合反应制得了有机&无机二氧化硅复合微球。

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SYNTHESIS OF TS 1 ZEOLITE ⅰ. 29 Si and 1H High Resolution NMR Investigation on the Hydrolysis of Tetraethyl Orthosilicate

TS-1分子筛的合成Ⅰ.~（29）Si和~1H NMR研究正硅酸乙酯的水解

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It is concluded that SO_ 2 pollution has a potential damaging effect on genetic material DNA in lung cells of mammalian animals. Conclusions: Tetraethyl lead pollution even at lower concentrations also has a potential risk to the genetic material DNA of brain cells from mice.

这些结果表明，较低浓度的SO2也具有引起哺乳动物肺细胞DNA突变的潜在危险.结论：四乙基铅能引起小鼠脑细胞DNA突变，呈剂量效应关系。

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Tetraethyl ammonium hydroxide ( organic template), silica gel ( silica source) and sodium meta-aluminate ( aluminum source) were used to p-zeolite synthesis and template removal in microwave radiation.

以粗孔硅胶为硅源，偏铝酸钠为铝源，四乙基氢氧化铵为模板剂，在微波辐射条件下，合成β沸石并脱除模板剂。

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Compared with standard methods, choose innoxious Tetraethyl ammonium chloride titrant the above one needs no distillation absorption and indicator. It has the advantages of being easy and quick in operation, and the determination result is accurate and reliable.

本方法终点变化敏锐，不外加指示剂，与通用的标准分析方法相比较，操作简便、快速，测定结果准确可靠，所用分析试剂无毒。

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The Epoxy/ TEOS, Epoxy/ GPTMS and Epoxy/ GPTMS-TEOS hybrid materials were prepared by the two-step method based on the precursors of tetraethoxysilane ( TEOS), ( 3-glycidoxypropyl) trimethoxysilane ( GPTMS).

本文采用二步法，以正硅酸乙酯TEOS、γ-缩水甘油醚基丙基三甲氧基硅烷GPTMS以及GPTMS-TEOS为无机组分前驱体，制备了Epoxv/TEOS、Epoxy/GPTMS、Zpoxy/GPTMS-TEOS杂化材料。

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