硅酸化

The hybrid mesoporous materials, PW11/SBA-15, were synthesized using tetraethoxysilane and lacunary polyoxometalate Na7PW11O39 (PW11) by a co-condensation approach in the presence of triblock copolymer EO20PO70EO20 (P123) as a template.

采用三嵌段共聚物EO20PO20(P123)为模板剂，正硅酸乙酯和缺位Keggin型多金属氧酸盐Na7PW11O39(PW11)为无机前驱体，由共缩合法一步合成了PW11/SBA-15介孔杂化材料。

Hydroxyethyl cellulose and tetraethyl orthosilicate are chosen as the stuffs for the reaction, and HEC/SiO2 organic/inorganic hybrid are prepared by Sol-Gel process.

以羟乙基纤维素、正硅酸乙酯为原料，采用溶胶－凝胶技术合成了HEC/SiO2有机－无机杂化材料。

In this paper, SiO_2-based air-water interfacial films with nano structure are templated by cationic surfactant cetyl trimethyl ammonium bromide with tetraethyl orthosilicate as precursor.

本文以正硅酸乙酯为前驱体、以十六烷基三甲基溴化铵为模板，用自组装的方法在特殊的区位——空气—水界面上制备了SiO_2的无机纳米薄膜。

Due to the key challenge for complicated techniques and preparation, there were few reports about ternary systems. A series of polyimide/SiO_2-TiO_2 hybrid films with different contents of inorganic particle were fabricated using tetraethoxyl silicane and tetrabutyl titanate as precursor in situ with sol-gel method and both phases in situ. Chemical structure and micro-morphology of hybrid films were studied by means of IR, SEM and XRD.

本文以正硅酸乙酯和钛酸四丁酯为前驱体，采用原位溶胶-凝胶法和两相原位同步法制备了一系列不同含量的聚酰亚胺/SiO_2-TiO_2杂化薄膜，利用红外光谱、扫描电镜和XRD观察了薄膜的化学结构和微观结构，并测试了薄膜的热稳定性、电击穿场强和耐电晕性。

A series of polyimide/SiO2-TiO2 hybrid films with different contents and weight ratio of inorganic particle were fabricated using tetraethoxyl silicane and tetrabutyl titanate as precursor by situ method. Chemical structure, micro-morphology and thermal stability of hybrid films was studied by means of SEM, IR and XRD, TGA was also tested.

以正硅酸乙酯和钛酸四丁酯为前驱体，采用两相原位同步法制备一系列不同含量及重量比的聚酰亚胺／SiO2-TiO2杂化薄膜，利用红外光谱、扫描电镜和XRD观察了薄膜的化学结构和微观结构，并测试了薄膜的热稳定性。

A series of polyimide/SiO2-TiO2 hybrid films with different contents and weight ratio of inorganic particle were fabricated using tetraethoxyl silicane and tetrabutyl titanate as precursor by situ method .

以正硅酸乙酯和钛酸四丁酯为前驱体，采用两相原位同步法制备一系列不同含量及重量比的聚酰亚胺/SiO2-TiO2杂化薄膜，利用红外光谱、扫描电镜和XRD观察了薄膜的化学结构和微观结构，并测试了薄膜的热稳定性。

Magnesium trisilicate was synthesized by precipitation using Na2OnSiO2 and Mg (NO3)2 as raw materials.

由Na2OnSiO2和Mg(NO3)2经沉淀法合成了三硅酸镁，用450℃煅烧或酸化方法对合成的样品进行改性。

The presence of isopropanol in the crystallization process is beneficial for the formation of small Silicalite-1 nanocrystals. The rearrangement reaction results on the different Silicalite-1 indicate that the rearrangement reaction takes place at the external surface of the crystallites as well as in the mouths of zeolitic pores, but not inside the zeolitic pores.

制备条件对Silicalite-1的催化行为影响较大，在由硅酸乙酯水解老化后的溶胶中添加异丙醇可以促进小晶粒Silicalite-1的生成，改变模板剂的用量、晶化温度和时间等可以合成不同晶粒尺寸和形貌的Silicalite-1纳米晶。

Highly stabilized mesoporous molecular sieves were synthesized by the hydrothermal method using natural clay and sodium silicate as raw materials and cetyltrimethyl ammonium bromide as a template.

以天然黏土和硅酸钠为原料、十六烷基三甲基溴化铵为模板剂，水热法合成了有序性好的高稳定性介孔分子筛。

The structures of biosilica formed in aloe spicules are pillars of 2-3 μm diameter and lengths of up to 35 μm when Si〓 was supplied.

芦荟植物从特殊的有机前体分子正硅酸已酯合成了非自然状态下形成的生物矿化SiO〓结构。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。