催化剂

The results showed that the mixed-addenda heteropolyacids H6PM o9V3O40,H10PMo5V7O40and H11PMo4V8O40 c an improve the conversion of 2-octanol,selectivity for hexanoic acid and the r ate of production.When the amounts of heteropoly acid are 14%,10%and 14% of the weight of 2-octanol,co...

结果表明：H6PMo9V3O40、H10PMo5V7O40、H11PMo4V8O40等多元杂多酸均可提高仲辛醇的转化率、己酸产率和己酸选择性，并确定了这3种催化剂的最佳用量：当它们分别为仲辛醇质量的1 4%、1 0%、1 4%时，仲辛醇转化率可达98 3%、97 6%、100%；己酸的选择性可达85 7%、85 8%、78 8%；其性能明显优于钒催化剂。

In order to further predict the durability of the TS-1 catalyst in the severe condition of calcination regeneration, a catalytic deactivation method was employed to facilitate the obtaining of deactivated catalyst from the regenerated sample, and thus the conduct of repetitious regenerations.

研究了负载成&蛋壳型&的TS-1催化剂在丙烯环氧化的单管放大试验装置上连续运转1 200 h失活后的焙烧法再生条件，并结合催速失活，对该催化剂进行了多次焙烧再生研究。

The effect factors on glycolic acid ratio were studied(reaction temperature,reaction time,and the ratio of catalyst to choloroacetic acid).

以氯乙酸和氢氧化钠为主要原料，碘化钠为催化剂碱性水解法合成羟基乙酸，并采用单因素法对影响因素进行了研究，得到最优化条件：反应温度90℃，反应时间8 h，催化剂NaI用量为氯乙酸质量的0.8%。

The effects of molar ratio of anhydrous ethanol to glacial acetic acid, dosage of catalyst, reaction temperature and reaction time on the esterification ratio and reuse of catalyst were discussed.

探讨了酸醇物质的量的比，催化剂的用量，反应时间和反应温度对酯化率的影响及催化剂的重复使用情况。

Mechanical or physical failure of the catalyst is the cause of process shutdowns and catalyst changeouts more often than activity loss.

催化剂的机械性能或物理性能损坏是生产停车和催化剂更换的主要原因，往往比失活所造成的还要多。

Synthesis of methylene-4,4'-di catalyzed by zinc oxide Various metal oxide were investigated in the synthesis of methylene-4,4'-di from ethyl carbamate, and a serious of ZnO/SiO2 catalysts were prepared by deposition-precipitation method.

氧化锌为催化剂合成4，4'-二环己基甲烷二氨基甲酸乙酯以氨基甲酸乙酯和4，4'-二环己基甲烷二胺的反应体系为研究对象，在考察多种金属氧化物活性的基础上，使用沉积沉淀法制备了一系列硅胶负载氧化锌催化剂，并对其催化性能进行了研究。

At 80℃, the yield of esterification of benzoic acid with ethanol could reach 95% by using 10% catalyst for 6 h; the conversion of toluene in the nitration with 1 equiv. of 65% nitric acid could be achieved to 99% by using 5% catalyst for 5 h.

在80℃下，摩尔分数为10%的Yb(NTf2)3负载催化剂，反应6h可使苯甲酸乙酯的产率达95%；摩尔分数为5%的Yb(NTf2)3负载催化剂，反应5h可使甲苯与等摩尔质量分数为65%硝酸的硝化反应转化率达99%。

Aalborg Industries - a Global Company The world's leading supplier of marine boilers and related equipment for all types of commercial vessels.

巴斯夫催化剂有限公司是巴斯夫旗下的全资子公司，主要业务为汽车尾气催化剂的生产和销售，市场份额名列全球前茅。关于巴斯夫巴斯夫是全球领先的化工公司——The Chemical Company。

The affection of the ratio of butyl alcohol and acrylic acid, reaction time, amount of the catalysis was discussed, and reusability of catalysis was discussed, too.

探讨了醇酸摩尔比，反应时间，催化剂用量对反应的影响，并考察了催化剂的重复使用性能。

Dibutyl malate was synthesized from malic acid and butyl alcohol used solid superacid SO42-/TiO2 as catalyst.

以固体超强酸SO42-/TiO2为催化剂，以苹果酸和正丁醇为原料催化合成苹果酸二丁酯，并探讨了酸醇比、催化剂的用量、反应时间、带水剂等因素对酯化反应的影响。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。