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。
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。
It has been found that the Ca, Mg, la ion exchanged mordenites have both high activity and high selectivity toward dimethylamine with the yield of around 55%.
发现钙、镁、镧离子交换的丝光沸石，在表现出较高活性的同时，还对二甲胺具有55%左右的高选择性。
In current study of medicine and pesticide, pyridazinone compound has become a focus due to its excellent selectivity and high activity.
当今医药和农药研究中，哒嗪酮类化合物以其选择性好、生物活性高而成为一大研究热点。
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。
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。
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 methane conversion increased and formaldehyde selectivity decreased and formaldehyde specific activity increased as the reaction temperature rising.
随着反应温度的升高，甲烷的转化率增加，甲醛的选择性降低，甲醛比活性升高。
It has been demonstrated that two kinds of catalysts have considerable activity, selectivity and stability.
实验结果表明，两种催化剂具有较好的催化活性、选择性和稳定性。
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。
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。
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 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。
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。
The results indicated that the catalyst was good in activity, selectivity and stability.
该催化剂与参比剂相比，有良好的催化活性、选择性和稳定性；
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。
The thermal stability ofthe crystal structure of modified USY zeolite is increased, and n-hexane cracking activity ina pulse micro-reactor is decreased, while the olefin selectivity is increased.
改性后超稳Y型分子筛的晶体结构热稳定性增加，脉冲微反试验的正已烷裂解活性下降而烯烃选择性得到提高。
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。
The catalytic activity declined as the selectivity of paraxylene and ortho-xylene improved with increasing treated temperature.
随着处理温度的提高，催化剂的活性降低，对二甲苯和邻二甲苯的选择性上升。
A break - through in the research and development of domestic wax hydrotreating catalysts with high activity, good selectivity and superior stability is observed.
具有活性高、选择性和稳定性好的石蜡加氢催化剂，标志着我国对专用催化剂的研究与开发达到了突破性的进展。
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 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 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。
Conclusion Introducing the methyl group or a low alkyl group resulting in the high selectivity and increase of its activity.
结论甲基或低级烷基的引入导致了高选择性，使其活性增大。
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。
Nickel-based catalysts possess high catalytic activity for ethylene oligomerization with high selectivity, easily-controlled oligomers distribution and moderate reaction conditions.
镍系催化剂具有活性高、选择性好、产品分布可调、反应条件温和等优良性能。
All fungi parasite on the stump with the selectivity for they have different enzyme activity.
调查显示真菌对所寄生的伐根具有一定的选择性，这是和不同真菌的酶活动不同相关的。
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 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。
应用推荐