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 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 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。
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。
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。
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。
A successful technical catalyst is required not only to have high activity, selectivity and heat-resistance, but also enough high mechanical strength in order to resist some mechanical stresses.
一种成功的工业催化剂，除具有足够的活性、选择性和耐热性外，还必须具有足够的机械强度，以便抵抗在使用过程中的各种应力。
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。
The lab results showed that the catalyst has good activity, selectivity and stability.
实验室研究结果表明，该催化剂具有良好的活性、选择性和稳定性。
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。
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 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。
A hydrocracking catalyst with high selectivity to middle distillates was developed.
开发了一种具有较高的中油选择性的加氢裂化催化剂。
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 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。
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 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。
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 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。
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 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%。
Mechanical test results must be evaluated In conjunction with catalyst activity, selectivity, and stability data.
必须将机械测试结果和催化剂活性、选择性和稳定性数据联系起来进行综合评价。
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 commercial trial results showed that FC-24 catalyst possessed stable high activity and good selectivity, thus the product slates were high in total C5 + liquid yield and low in gas yield.
标定结果表明，FC - 24催化剂具有较高的活性且稳定性好，产品选择性好，产气少、C5 +液收高。
The results show that, at the optimized conditions of catalyst preparation and reaction, the yield of cyclohexanone can be reached to 85% and the selectivity is nearly 100%.
在优化条件下制得的催化剂用于环己醇脱氢，环己酮产品收率达85%，选择性近100%。
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 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 poor acrolein selectivity of this catalyst was improved by continuous use in the catalytic oxidation for making the particle size of the dispersed bismuth molybdate larger.
我们还发现，在催化氧化环境中连续使用的钼酸铋粒径会越来越长，对丙烯醛的选择性会相应提高。
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