查询词典 anatase

The anatase crystals of the TiO2 films connected together to form netlike structure after calcined, and th

在自制的光催化反应装置中以10mg/L甲基橙为降解对象，考察了TiO2薄膜的光催化性能，在4h内直接干燥的TiO2薄膜脱色率达到95%，经热处理后薄膜的光催化性能有一定提高，这说明采用AS溶胶前驱体制备的TiO2薄膜光催化性能良好。

Investigated the organic surface modification of anatase titanium dioxide pigment and its adsorption mode. It was founded that the surface hydroxyl groups are the active centers for olefinic acid. The adsorption of modifier fit Langmuir single molecule layer adsorption mode.

研究了锐钛型钛白的有机表面改性及表面吸附模型，认为表面羟基是有机烯酸表面改性的活性中心，改性剂在钛白表面的吸附符合Langmuir单分子层吸附模型。

However the resin aged fast with addition of anatase nano-TiOa P25 for its photoactivate activity. The mechanism of resin under UV radiation as following was put forward: free radicals produced from the surface of nano-TiOj attack the hydrogen of the methylene, then double bond is formed after the dehydrocholrination, and then the chain is broken after the double bond was oxidized by ozone.

锐钛型纳米TiO_2P25明显加速氯醚树脂的老化，通过IR和XPS分析推断树脂老化的机理为：纳米TiO_2表面产生的自由基攻击树脂中亚甲基的氢原子，发生脱氯化氢生成双键；双键被臭氧氧化发生断链裂解。

The results show photoactivity is related to structure of TiO2, that is the anatase phase plays beneficial role in photoactivity.

结果表明，光催化活性与晶体结构有关，锐钛矿型有利于光催化活性的提高。

Due to its large surface area, mesoporous structure, pure anatase structure and high adsorption capacity, the photoactivity of 31%TiO〓/SiO〓 was much higher than that of the pure titanium dioxide.

多孔硅胶抑制了高温时TiO〓晶型由锐钛矿向金红石型的转变，并且对TiO〓具有很好的分散能力。

The results show that the La doping inhibited the phase transformation from anatase to rutile, and improved the optical absorption and surface area of catalysts, also could effectively enhanced the photoactivity.

本论文主要研究了在水热法的基础上进行改进，通过不需要高温煅烧的路线制备了镧离子掺杂TiO_2光催化剂，并通过XRD、UV-Vis、IR、BET等表征手段详细考察了制备条件对催化剂的结构和活性的影响。

The results indicate that the pillaring process and crystal growing of anatase can be more easily realized by increasing the acid-base ratio of pillaring agents, raising the pillaring temperature and adding proper quantities of alkali. The calcination of Ti-pillared precursor brings the growth of TiO2 grain, at the same time the layer distance is declined. In order to obtain ideal products, the right pillaring conditions are: the acid-base ratio of pillaring agents of 13, pillaring temperature of 65 ℃ and the volume of alkali (2 mol/L) in pillaring liquid of 6 mL.

结果表明：在一定范围内增大柱撑剂酸碱比、提高柱撑温度以及加入适量碱，有利于插层复合反应的进行和锐钛晶型的生长；柱撑前驱物焙烧后TiO2晶粒长大，同时焙烧引起的脱水导致膨润土层间距的下降；为获得较理想的产物，合适的柱化条件为：柱撑剂酸碱比 n n (HNO3)为13、柱撑温度65 ℃和柱撑液加碱量为(2 mol/L NaOH) 6 mL。

The coatings, which had gradient structure of porously outer layer and densely inner layer, were mainly composed of rutile and anatase, and the elements of calcium and phosphorus existed in the form of perovskite, calcium phosphate and amorphous phosphates.

氧化膜与基体结合紧密(64.5±2.2)MPa，表层氧化膜明显可见许多胞状孔穴凹陷，疏松多孔，靠近钛基体的较表层致密，而且表面主要有晶红石，锐钛矿存在，具有较高的表面能。

A method for producing fatty acid alkyl esters and/or glycerin comprising a step of bringing a fat or oil into contact with an alcohol in the presence of a catalyst, wherein the catalyst is at least one catalyst selected from the group consisting of the following to: a metal oxide having an ilmenite structure and/or a slyrankite structure; an oxide containing a metallic element belonging to the Group 12 and a metallic element belonging to the Group 4; a mixed oxide containing a metallic element belonging to the Group 12 and a tetravalent transition metallic element; a metal oxide containing zirconium and at least one metallic element selected from the group consisting of metallic elements belonging to the Groups 4, 5 and 8; and a metal oxide containing anatase type titanium oxide and/or rutile type titanium oxide, and the metal oxide containing a sulfur component of 700 ppm or less.

脂肪酸烷基酯和/或甘油的制造方法包括在催化剂的存在下使脂肪或油与醇接触的步骤，其中，所述催化剂是选自由下列～所组成的组中的至少一种催化剂：具有钛铁矿结构和/或斯里兰卡石结构的金属氧化物；含有属于第12族的金属元素和属于第4族的金属元素的氧化物；含有属于第12族的金属元素和四价过渡金属元素的混合氧化物；含有锆和选自由属于第4、5和8族的金属元素所组成的组中的至少一种金属元素的金属氧化物；和含有锐钛矿型氧化钛和/或金红石型氧化钛的金属氧化物，并且所述金属氧化物含有的硫成分为700ppm以下。

In this thesis, anatase TiO〓 particles were also prepared with precise control of shape and size at high titanium concentration by formation of complex of Ti〓 ion with triethanolamine .

本文首次通过Ti〓离子和三乙醇胺形成络合物，建立了在较高钛的浓度下形状和大小可精确调控的锐钛型二氧化钛颗粒制备方法。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。