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。
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。
The Zn modified catalyst has not improve the selectivity of catalyst for thiophene in model gasoline containing octene.
不同的金属离子改性表明：1。采用锌离子对催化剂进行改性，没有提高催化剂在烯烃存在时对噻吩的选择性。
In comparison with imported catalysts, AB-97 catalyst has the characteristics of long regeneration period, good active stability and selectivity.
与进口催化剂相比，AB- 97型催化剂具有再生周期长，活性稳定性和选择性好等特点。
As a phase transfer catalyst polyethylene glycol can improve the selectivity of the reaction.
聚乙二醇作为相转移催化剂可以提高反应的选择性。
As a phase transfer catalyst, polyethylene glycol could improve the selectivity of the reaction.
聚乙二醇作为相转移催化剂可以提高反应的选择性。
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。
The results showed that selectivity and stability of the catalyst were greatly enhanced and yield of cumene was increased after the modification.
实验结果表明，改性后的催化剂选择性和稳定性提高，异丙基苯的收率增加；
Conversion and selectivity of catalytic reactions as well as the deactivation rate of the catalyst itself is very temperature - sensitive.
催化反应的转化率和选择性以及催化剂本身的失活速率均对温度十分敏感。
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。
This paper reviewed the effects of the non uniform distribution of active components on the activity, selectivity and stability of catalyst.
本文评述了活性组分不均匀分布对催化剂的活性、选择性和稳定性的影响。
In addition, the commercial application of newly developed DCC catalyst with high propylene selectivity was also summarized.
另外对新开发的高丙烯选择性催化裂解催化剂的工业应用情况进行了总结。
The special characters of copper colloidal catalyst is the high selectivity in the reaction of hydration of acrylonitrile to acrylamide.
胶体铜催化丙烯腈水合制备丙烯酰胺反应的突出催化特征是高选择性。
The results show that the performances such as the conversion rate, the selectivity and the stability of the catalyst reach the advanced level of the same kind catalyst inland.
试验结果表明，该二甲醚合成催化剂的转化率、选择性、稳定性等性能达到了国内同类催化剂的先进水平。
Although transition metal promoter iron couldn't increase the selectivity of indole, it could improve the stability of the catalyst.
加入过渡金属助剂铁虽然不能提高催化剂的选择性，但可以提高催化剂的稳定性。
The advantages of the method include rapid colour developing without catalyst, high sensitivity and selectivity.
方法具有显色迅速、不用催化剂、灵敏度及选择性较高以及不含乙醇等特点。
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。
The catalyst has high catalytic activity and excellent stability, both the conversion rate of TAME and the selectivity of isoamylene can be over 99%.
该催化剂具有良好的活性和稳定性，TAME转化率和异戊烯的选择性均超过99%。
By keeping the total amount of catalyst unchanged, selectivity of cumene and conversion of propylene increases with the void of catalyst packing structure.
在催化剂装填总量不变的前提下，异丙苯的选择性与丙烯的转化率均随催化剂装填结构空隙率的提高而提高。
The selectivity is related to the porous structure and acid strength of the catalyst.
选择性与催化剂的结构和酸强度有关；
The perfermance test on a commercial riser cracker shows that meta-Y-3A molecular sieve cracking catalyst is of high activity and improved gasoline selectivity.
偏Y-3A分子筛裂化催化剂在提升管催化裂化工业装置上使用试验的结果表明，该催化剂的裂化活性较高，汽油选择性较好。
The effect of various independent variables which affected the selectivity of nonene during the alkylation of benzene and propylene on phosphate catalyst was studied.
用磷酸盐催化剂对苯、丙烯烃化反应中副产物壬烯选择性的影响因素进行了研究。
In the oxidation process for manufacturing ethylene oxide, maintaining the high selectivity of the silver catalyst is essential to obtaining the best efficiency.
在乙烯氧化制环氧乙烷过程中，保持银催化剂的高选择性是发挥装置最好效益的行之有效的方法。
The effects of mole ratio of reactants, selectivity and quantity of catalyst and reaction time on the conversion rate have been studied.
并对原料配比、反应时间、催化剂的选择及用量对转化率的影响进行了讨论。
The activity, olefin selectivity and thermal stability of F -T catalyst can be improved by using ultrafine particle with a suitable promoter.
利用超细粒子并选用适当的助剂提高了F-T过程的反应活性，选择性和热稳定性。
The developing history of PNP from mononuclear to dinuclear and trinuclear was introduced, and influences of PNP structure on the stability, activity and selectivity of the catalyst were emphasized.
重点介绍了PNP由单核向双核、三核的开发进程，并讨论了其结构对催化剂稳定性、活性和选择性的影响。
The relationship between the high selectivity of catalysis and the structure of active centre of copper colloidal catalyst in selective hydration of acrylonitrile to acrylamide was studied.
研究了胶体铜催化丙烯腈水合制丙烯酰胺的高选择性与活性中心结构的关系。
The result showed that the homogeneous catalysts had higheractivity and selectivity than that of the Nickel catalyst when hydrogenating the soybean oil.
结果表明均相催化剂对大豆油的氢化有比镍催化剂更好的活性和选择性。
We would like to measure the intrinsic selectivity behavior of a catalyst independent of any potential disguises.
我们很想去掉任何可能的假象以测定催化剂固有选择性的可能。
It was also shown that activity of tri metal catalyst was higher than that of bi metal one, and selectivity of Cu ni Cr catalyst was higher than that of nickel catalyst.
结果表明，三元金属催化剂的活性高于二元金属催化剂，选择性高于单元金属催化剂。
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