查询词典 calcination

It is first reported and studied systematically about the changes occured during calcination, reduction and re-oxidation treatments of Pt ammine complex supported on β zeolite.

一。首次系统地研究了β沸石上Pt胺化合物经分解、还原及再氧化等处理过程中发生的变化，并提出关于Pt粒子大小及其状态变化的模型。

Using mordern physical chemistry techniques (such as XRD、 TG-DTA、 IR、 XPS and 〓Xe-NMR)、 chemical adsorption techniques (NH〓-TPD、 H〓-TPD、 TPO、 TPR etc.) and pulse flow microreaction of n-hexane、 methylcyclopentene and n-hexane containing 0.2ppm thiophene, we studied mainly the following three points:(1). the changes occured during the calcination pretreatment of Pt ammine complex supported on β and L zeolites;(2). the effect of structure and acidity-basicity of zeolite on the dispersion and electron state of Pt particles; and (3). the influence of second metal component on the reactivity of nhexane aromatization and sulphur-resistance of Pt/L zeolite catalyst. Several interesting and valuable results are obtained and summerized as follows

本论文运用各种近代物理表征方法(XRD、BET、TG-DTA、IR、XPS和〓Xe-NMR)、化学吸附技术(NH〓-TPD、H〓-TPD、TPO、TPR等)和正己烷、甲基环戊烷及含噻吩正己烷的脉冲微反等方法，着重研究了(1)载Pt的β和L沸石在分解预处理过程中发生的变化；(2)沸石载体结构及酸碱性对Pt粒子分散及电子状态的影响；(3)第二金属组份对载Pt沸石催化剂上正己烷芳构化及抗硫性能的影响等，得到了某些有意义的结果。

TiO_2 thin films prepared directly by Sol-gel method were amorphism; Anatase-type TiO_2 took place at calcination temperature 450℃. It was found that different substrates showed some difference of photocatalytic activities.

溶胶-凝胶法直接制备的TiO_2薄膜是无定形的，通过对不同基底的薄膜样品在450℃条件下退火处理后得到了锐钛矿型TiO_2薄膜。

Barium strontium titanate nanoparticles were successfully prepared by the low temperature (300-500℃) calcination method, using barium hydroxide, strontium hydroxide, and tetrabutyl titanate as starting materials.

以氢氧化钡、氢氧化锶和钛酸丁酯为原料，采用低温煅烧(300~500℃)法合成了钛酸锶钡纳米粒子。

Chromium hydroxide is bright green pigment prepared by the calcination of a bichromate with boric acid at 500'C.

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Calcining method is an efficient approach to improve the quality of bone ash. In this paper, the effects of the calcining temperature on its crystal structure and morphology, the calcination-modification on slurry fluidity and sintering process of bone china bulk were investigated through infrared spectroscopy, differential thermal analysis, X-ray diffractometer and scanning electron microscopy.

对骨胶厂提供的骨灰进行煅烧处理，通过红外、热分析、X射线衍射和扫描电镜等表征手段系统地研究了煅烧温度对骨灰的显微形貌和结构变化的影响规律，以及骨灰煅烧改性对坯体浆料流动性和坯体烧结工艺的影响规律。

The effects of cobalt content, calcination temperature, reaction temperature, reaction time and pressure were investigated.

考察了不同钴含量、催化剂焙烧温度、反应温度、反应时间和压力对催化剂活性的影响。

It is found that the change in phase of Z〓S〓 occurs with the calcination temperature.

研究了热处理条件对Z〓S〓的光催化活性的影响。

The results showed that the amount of surface defects and the microstructure of photocatalyst changed with the calcination temperature.

结果表明，焙烧温度能引起特定的缺陷数目变化，改变了光催化剂的微观结构。

The optimal calcination temperature of support was at 600℃.

2最佳的载体制备方法是溶胶-凝胶法。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。