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- Activity and selectivity of catalyst is highed by means of mixed supported LaPO_4-Cu_3(PO_4)_2 of strontium phosphate. 实验结果表明,以磷酸锶为载体的混合负载镧铜催化剂,具有负载效率高和负载层牢固的优点,其活性和选择性比较高。
- Fischer-Tropsch synthesis is one important technology for gas to liquid (GTL).The activity and selectivity of catalyst are key factors in this process. 摘要费托合成技术是一种重要的气变液(GTL)技术,其关键是研发高活性、高选择性、性能稳定、使用寿命长的催化剂。
- The results show that the activity of catalyst and the selectivity of C_2 hydrocarbons can be improved when a little Sm_2O_3 adds to Li_2SO_4/MgO catalyst,but the conversion of methane will be reduced when a little La_2O_3 adds to. 结果发现 ,在Li2 SO4/MgO催化剂中引入少量Sm2 O3 可以提高催化剂活性和生成C2 烃的选择性 ,而加入少量La2 O3 会降低甲烷转化率。
- In addition, local superheating of catalyst surface was alleviated in supercritical phase F-T synthesis and decreasing of selectivity of methane and CO2 and longer catalyst lifetime resulted. 同时由于超临界介质有利于减轻催化剂床层的局部过热,使甲烷和CO2的选择性降低,且延长了催化剂使用寿命。
- Selectivity of catalyst aged at high temperature 根据原料性质和组成特点选择催化剂的研究
- Conversion and selectivity of gasoline secondary reactions depended on the olefin content of feed gasoline, the zeolite type of catalysts and the operating intensity of reaction process. 二次反应的转化深度和选择性取决于原料汽油的烯烃含量、催化剂沸石类型和操作强度。
- The effects of catalysts, the feeding condition and the selectivity of the reacting position in the condensation reactions were studied, and the compounds had been separated, purified and analysed. 研究了反应的催化剂,反应位置的选择性和加料方式等因素对反应的影响。所合成出来的化合物均经分离、提纯、分析测试。
- That shop has a fine selection of cakes. 那家商店有各种精美的糕点供我们选择。
- That store has a good selection of furniture. 那家店有很多家具可供挑选。
- Research %26 Development of Catalyst and Refinery of Feul Oil. 燃料油精制工艺及催化剂的研究与发展。
- The activity of catalyst depends on the loading amount of Cu. 催化剂中Cu的担载量是影响催化剂的活性的一个重要因素,在0-4.;35%25的范围内,伴随着担载量的增加,吲哚的选择率同步增加。
- Initial temperature of catalyst bed is wholly too high. 提高起始反应温度使催化剂床层温度整体过高导致飞温。
- A proper amount of catalyst will speed up the reaction. 添加适量的催化剂,会加快反应的速度。
- Two questions of catalytic wet oxidation(CWO)under normal pressure have been studied:the selection of catalysts and the optimization of experimental conditions. 研究了湿式催化氧化法(CWO)处理高浓度有机废水中催化剂的选择和实验条件的优化。
- The protein binding selectivity of clozapine was discussed. 讨论了氯氮平蛋白结合作用的选择性。
- Her selection of a dress took a long time. 她挑选一件衣服花了很长时间。
- Many medicines are products of catalysts. 很多内服药就是催化反应的产物。
- We have a very wide selection of watches. 我们有很多手表可供选择。
- To lengthen the setting time: Increase amount of catalyst paste. 延长固化时间增加催化糊剂的量。
- We've got a wide selection of table wine. 我们有大量的料酒供选择。