Said catalyst features high reaction activity and selectivity and less by-product.
该催化剂具有反应活性和选择性高副产物少的特点。
The silylation of support TS-1 led to the increase of catalyst activity and selectivity.
对载体进行适量的硅烷化处理，有利于提高催化剂的活性和选择性。
Noble catalysts have high activity and selectivity, and the reaction conditions are mild.
贵金属催化剂活性高，选择性好，反应条件温和。
The results demonstrate that this catalyse has an excellent activity and selectivity to this reaction.
结果表明该催化剂对此合成反应具有很高的催化活性和产物选择性。
Under low temperature, the activity and selectivity of resin are excellent, but stability is a little bad;
醚化过程中树脂催化剂低温时活性选择性好，但耐热性能不好；
Result showed that both the activity and selectivity of catalyst could meet the demand of industrial design.
结果表明催化剂活性、选择性等达到工业设计要求。
Moreover, their activity and selectivity in etherification reaction is simultaneously estimated and compared.
此外，对这几种催化剂的醚化活性、选择性进行了评价。
Nano-sized photocatalysis material is a kind of catalyzer which have high chemistry activity and selectivity.
纳米光催化材料是一种对化学反应具有较高活性和高选择性的催化剂。
The results show that such complex has good catalytic activity and selectivity for catalytic methanol carbonylation.
结果表明，该配合物催化甲醇羰基化反应具有较好的活性和选择性。
Its advantages include high activity and selectivity of catalyst, easy separating and reuse of catalyst, and low cost.
且催化剂颗粒较大，易于从反应产物中分离，催化剂可重复使用，明显降低了生产成本。
DU 122290 was developed from sultopride and shows improved activity and selectivity. Suggest possible reasons for this.
DU 122290是由舒多普利改进得到的，增强了活性和选择性。请解释可能的理由。
The catalytic activity and selectivity of the catalysts for n-pentane isomerization at ambient temperature were investigated.
考察了所制备的催化剂上常温下正戊烷异构化反应的活性和选择性。
The results obtained from comparison tests with imported catalysts show that the catalyst has higher activity and selectivity.
对比评价表明，自制的催化剂活性及选择性高于进口的液相醛加氢催化剂。
The catalytic activity and selectivity were little influenced by the loading amount in the cases of the coprecipitated catalysts.
但在共沉淀的反应中催化活性和选择性很少被反应量影响。
The effects of reaction conditions in the hydrothermal process on the catalytic activity and selectivity of TS-1 were investigated.
结合物性表征研究了水热合成条件对合成的TS - 1分子筛苯酚羟基化反应活性及选择性的影响。
The commercial results indicated that the activity and selectivity of the regenerated catalyst can be fulfilled the long term operation.
生产实践表明，RN - 1催化剂再生后的活性和选择性能满足长周期生产要求。
Compared with the existing method, the method has higher activity and selectivity for dehydrating the methanol to prepare the dimethyl ether.
与现有方法相比，该方法具有较高的甲醇脱水制备二甲醚活性与选择性。
The activity and selectivity of the catalyst is higher as compared with the traditional hydrogenation catalyst and the reaction condition is mild.
与传统的加氢反应相比，该催化剂的反应条件温和，加氢反应的活性和选择性高。
When said catalyst is used for making Fischer-Tropsch synthesis reaction, as compared with skeleton iron it possesses high activity and selectivity.
该催化剂用于费托合成反应时，具有比骨架铁高的活性和选择性。
The actions of HPAs with supporters were not the same, and they directly affect the activity and selectivity of dehydration of isopropanol in vapor phase.
不同载体与HPA之间的作用不尽相同，其结果直接影响异丙醇气相脱水反应的活性及产物的选择性。
The effects on the catalytic activity and selectivity of reaction temperature, time, pressure, quantities of catalyst and the kinds of solvent were observed.
分别考察了反应温度、反应压力、反应时间、催化剂用量及反应溶剂对反应的影响。
The effect of reaction temperature on reaction activity and selectivity of dimethyl dichlorosilane (DDS) in direct synthesis process has been investigated experimentally.
实验研究了直接法流化床合成甲基氯硅烷过程中反应温度对反应活性和二甲基二氯硅烷(DDS)选择性的影响。
And this paper summarizes their progress and wide use in organic reactions according to their unique non - dissolve property, acidity, activity and selectivity in recent years.
综述了近年来此类催化剂以其独特的不溶性、酸性、活性、选择性在有机合成反应中的广泛应用。
Influences of modification species and modification times on activity and selectivity of the catalyst were also investigated using toluene disproportionation as the probe reaction.
以甲苯的歧化反应为探针，考察了改性剂的种类和改性次数等因素对催化剂选择性和活性的影响。
In this paper, the properties and mechanism of strong metal-support interaction and its effect on the activity and selectivity in the heterogeneous catalytic reaction were reviewed.
对金属-载体强相互作用的特性，产生的机理以及对多相催化反应的活性和选择性的影响进行了综述讨论。
The effects of reaction temperature, concentration, space velocity etc. on the activity and selectivity of the catalyst as well as its thermal stability were examined in fix bed reactor.
在固定床上，考察了反应温度、浓度、空速等对催化剂活性和选择性的影响及催化剂的耐热稳定性。
Nanometer catalyst material had peculiar crystallographic structure and surface property, thus its catalytic activity and selectivity were too much greater than these of traditional catalyst.
由于纳米材料催化剂具有独特的晶体结构及表面特性，因而其催化活性和选择性大大高于传统催化剂。
The future study on catalytic hydrogenation of rosin will mainly be concentrated on the preparation of new catalysts with higher activity and selectivity to further lower pressure and temperature.
今后对松香催化加氢反应的研究主要是研制具有更高活性和选择性的新型催化剂，以进一步降低温度和压力。
The future study on catalytic hydrogenation of rosin will mainly be concentrated on the preparation of new catalysts with higher activity and selectivity to further lower pressure and temperature.
今后对松香催化加氢反应的研究主要是研制具有更高活性和选择性的新型催化剂，以进一步降低温度和压力。
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