查询词典 calcination

ITQ-27 is stable to calcination in air, absorbs hydrocarbons, and is catalytically active for hydrocarbon conversion.

ITQ-27对于在空气中煅烧而言是稳定的，可以吸附烃类，以及对烃转化具有催化活性。

At the same calcination temperature, CoxAl(8/3-2x/3)O4 spinel is easier to be formed when acetate is used as starting salt.

在相同焙烧温度下，以醋酸钴为原料时，更容易形成CoxAl(8/3-2x/3)O4尖晶石相。

With the increase of calcination temperature, the interaction between cobalt phase and support becomes stronger, and Co3O4 gradually changes to CoxAl(8/3-2x/3)O4 spinel.

随着焙烧温度提高，活性组分与载体的相互作用加强， Co3O4相逐步向CoxAl(8/3-2x/3)O4尖晶石相转化，这可能是样品氧化活性下降和选择还原活性升高的主要原因。

Dynamic analysis of phase transition and observation of morphologic evolution show that the growth of K_2Ti_6O_(13) whisker is quite sensitive to calcination temperature accompanying with fulminous growth at given temperature, but after that the growth became slow.

动态相变分析和晶须形态演化观察表明：K_2Ti_6O_(13)晶须的生长对煅烧温度极为敏感，一定温度下晶须的生长转变几乎是&爆发式的&，但是此后晶须的生长变得很缓慢。

Using either of the three clay minerals, gismondite, metahalloysite and kaolinite, subjecting them to calcination and treating them at various temperatures with appropriate amounts of water glass and alkali liquor, molecular sieves of the 13X type can be readily obtained.

X型分子筛不仅可作为吸附剂，而且也是一类新型的催化剂和催化剂载体，具有广泛的用途。

XRD patterns shows that they have hydrotalcite structure before calcination.

XRD谱图表明，在焙烧前，它们具有水滑石结构。

The good catalytic performances were obtained on those catalysts supported by SiO_2. With the increasing calcination temperature from 300℃to 700℃, Co_3O_4 particles augmented and sintered on the samples surface which contained 10 wt.% cobalt, the crystallite size of Co_3O_4 was aggrandized from 7.2 nm to 20.3 nm by inchmeal. On the other hand, the activation energy for the combustion reaction was increased linearly with the augment of average crystallite size of Co_3O_4, the TOF value on prepared catalyst was decreased with it. Thus, the catalytic combustion was a typical structure-sensitive reaction.

在钴含量为10 wt%的样品上，随着焙烧温度由300℃提高到700℃，钴物种出现迁移团聚甚至烧结，在XRD中测定的Co_3O_4晶粒尺寸由7.2 nm逐步增加至20.3 nm；另一方面，催化剂的燃烧活化能随样品上Co_3O_4晶粒的平均尺寸增加而呈现线形增加趋势，而单位时间内单位活性物种上的甲烷转换频数随着粒径增加而逐渐降低，这一现象证实了该反应属于典型的结构敏感反应。

Synthesis of biodiesel by transesterification of rapeseed oil and methanol catalyzed by KOH/Al2O3 solid base was studied. The catalyst was prepared by isochoric impregnation. Effects of some factors on the transesterification were investigated systematically and reaction conditions were optimized. The optimum reaction conditions on KOH/Al2O3 catalyst were: mass ratio of KOH to Al2O3 20%; calcination temperature 400℃ for 5h; molar ratio of methanol to oil 12:1, the amount of catalyst 5wt%; reaction temperature 60℃ and reaction time 2h.

采用等体积浸渍法制备了KOH/Al2O3负载型固体碱催化剂，并将其用于菜籽油与甲醇酯交换法合成生物柴油的研究；分别考察了催化剂附载量、锻烧温度、醇油摩尔比、反应温度、反应时间等条件对生物柴油产率的影响；结果表明：用等体积浸渍法，在400℃煅烧5h，制得负载量为20%的KOH/Al2O3催化剂。

In this paper,with respect to the low reactive activity of ludwigite from Wengquangou for the manufacture of borax by the CO2-soda process,a kind of composite additive was employed for the calcination of ludwigite.

针对碳碱法加工翁泉沟硼铁矿生产硼砂过程中存在的矿石活性低等问题，通过添加复合添加剂对硼铁矿进行活化焙烧，用常压碱解率评价焙烧矿的反应活性，分别考察了复合添加剂用量、焙烧温度以及焙烧时间对翁泉沟硼铁矿反应活性的影响。

Calcining seed of rutile titanium dioxide was prepared at low temperature using metatitanic acid as raw material through alkaline hydrolysis, hydrolysis reaction, first washing, neutralization reaction, second washing and acid dissolution. These kinds of seed were added in the salt treatment, and the influences of calcining seed and calcination temperatures on the content of rutile TiO2 pigment were examined systemically.

以偏钛酸为原料，经碱解反应、水解反应、一次洗涤、中和反应、二次洗涤、酸溶反应，低温下制备了高活性金红石型TiO2锻烧晶种，并将其用于盐处理过程，考察了晶种添加量和锻烧温度对TiO2晶型转化的影响。

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。