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。
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 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 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。
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。
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；
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。
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。
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。
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。
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 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 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 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 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。
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。
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 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。
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 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 methanation catalyst of carbon dioxide in the invention shows superior activity and methane selectivity in the methanation reaction of the carbon dioxide.
本发明提供的二氧化碳甲烷化催化剂在二氧化碳的甲烷化反应中显示出优越的活性和甲烷选择性。
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。
The effects of temperature, the ratio of ammonia, the ratio of air and the space velocity of catalyst upon the conversion, molar yield and selectivity of the reaction were observed, respectively.
考察了反应温度、氨比、空气比和空速对反应的转化率，摩尔收率和选择性的影响。
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 modified catalyst has better ethanol conversion and the selectivity of ethylene, has good prospects for industrial application.
改性后的催化剂对乙醇的转化率和乙烯的选择性较好，具有良好的工业化应用前景。
Decrease the acid intensity, the selectivity and life of catalyst can improve.
降低酸强度有利于提高催化剂的选择性，延长催化剂的寿命。
With the reused catalyst, the average selectivity and yield of cyclohexene oxide could attain 95.3% and 90.9%, respectively.
将回收的催化剂用于反应，环氧环己烷的平均选择性和平均收率分别为95.3%和90.9%。
The catalyst has high activity, selectivity and the characteristic of reaction controlled phase transfer catalyst.
该催化剂具有高活性、高选择性，且具有反应控制相转移催化剂的特性。
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