触媒

This investigation was prepared MCM-41 catalyst films on silicon wafer in ammonia media, using tetraethyl orthosilicate as a precursor and cetyltrimethylammonium bromide as a surfactant.

中文摘要本研究以四乙基氧矽溶液为矽酸盐的来源，溴化十六烷基三甲基铵盐为界面活性剂，在氨水的环境下，制备MCM-41触媒薄膜於矽晶片上。

Even in the visible light system, the 0.30VT-I photocatalytic electrode has great photoactivity as same as in the UV light system.

以不同光源进行光催化实验中发现，0.30VT-I光触媒电极於紫外光及可见光系统下，对亚甲基蓝之去除量相近。

Titanium dioxide has been extensively used as photocatalyst in nowadays. But aggregation between nanoparticles results in a lower photoactivity.

目前奈米二氧化钛光触媒应用已相当广泛，但奈米粉体之间因为容易发生团聚的现象，而降低奈米二氧化钛的效能。

It is photocatalytic, meaning that it causes chemical reactions in the presence of light.

它是透过&光触媒&作用，在光线的照射下，产生化学反应。

Air purification used in the context of the photocatalytic TiO2 is.

在空气净化方面常用的光触媒是 TiO2。

Passivation process also has some drawbacks, including hard buck coke catalyst bed treatment、polythionic acid stress corrosion cracking prevent for sensitively materials, meanwhile passivation process must be coordination between skillful local workers with knowledgeable company.

钝化法也有一些潜在的缺点必须注意，同时也是需要厂商负责保证，主要包括大块结焦废触媒的处理、钝化剂化学成分是否会对设备材质造成潜在伤害的确认及设备因敏化而产生聚硫酸应力腐蚀的预防等。

Air is pretreated in photocatalyst prefilter module. Big particular matter is filtered in this stage.

空气在冷触媒初效过滤模块进行预处理，去除空气中较大的颗粒物。

The beta-thioalkoxyalcohols could be obtained in good yields by the reaction of dialkyl-substituted propargylic dithioacetals with a series of carbonyl compounds.

我们发现在铁触媒和格林那试剂的存在下，利用双烷基取代炔丙基硫缩酮和羰基化合物反应生成的beta-硫烷氧基醇，可以进行不常见的beta-氧消去反应，而得到烯炔衍生物。

In the presence of palladium catalyst and triphenylphosphine, alkynyl Grignards or alkynyllithiums could successfully couple with alkyl bromides and iodides. Aryl-substituted propargylic dithioacetals could also be obtained by this strategy.

在钯触媒和三苯基磷的存在下，我们可利用炔基格林那试剂或炔基锂和简单的卤烷进行偶合，而这样的反应条件也能应用在苯基取代炔丙基硫缩酮衍生物的合成上。

If you peer inside a used catalytic converter , nothing looks salvageable , much less valuable .

如果你仔细看看用过的触媒转换器里面，似乎没有什么可以回收利用，也不值钱。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。