The optimization results indicated that the reaction selectivity increased by over 2%.
优化结果表明，反应选择性可提高2%以上。
Concept, theory and characteristics of supercritical liquid, reaction kinetics and reaction selectivity under supercritical liquid.
介绍了超临界流体的概念、原理和特点，及在超临界下反应动力学和 反应选择性。
The present invention is used in the synthesis of capped polyether to raise the reaction selectivity and polyether capping rate effectively.
本发明用于封端聚醚的合成，能有效提高反应选择性和聚醚封端率。
The method of the invention has the advantages of easily available materials, simple process, easy operation, good reaction selectivity and high yield;
本发明具有原料易得，工艺简单，操作简便，反应选择性好，产物收率高；
In this invention, alkaline inorganic solid microcapsule is used, and the latter can slowly release strong alkali to ensure the reaction selectivity and the and capping rate.
本发明使用不含水的碱性无机固体微胶囊，可以在反应过程中缓慢释放强碱，确保反应选择性和封端率。
The present invention has mild reaction condition, simple operation, easy-to-obtain catalyst, high reaction selectivity and high conversion rate and has high industrial practicability.
本发明具有反应条件温和、操作过程简单、催化剂价廉易得、反应选择性好、反应转化率高等优点，是一种满足工业化需求、实用性很强的方法。
RESULTS and CONCLUSION The new approach could significantly shorten the reaction time, improve the reaction selectivity and the yield, and it is also suitable for industrial production.
结果与结论所用方法可缩短反应时间，提高反应的选择性和收率，可用于工业化生产。
RESULTS and CONCLUSION The new approach could significantly shorten the reaction time, improve the reaction selectivity and the yield, arid it is also suitable fur industrial production.
结果与结论所用方法可缩短反应时间，提高反应的选择性和收率，可用于工业化生产。
The dominant reaction pathways and the effect of reaction temperature and type of zeolites on the yield and selectivity of benzene formed during catalytic cracking of cumene were investigated.
在催化裂化反应条件下，研究了异丙苯主要裂化反应路径以及反应过程中反应温度和分子筛类型对苯产率和选择性的影响规律。
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。
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。
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。
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。
Based on the research, the reaction conditions were optimized to increase the selectivity of the main product 2,6- diisopropylaniline.
并在研究基础上优化了反应条件，提高了主产物2，6-二异丙基苯胺的选择性。
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。
Effects of calcination temperature, space velocity, base content, reaction temperature, modification of various ions on the reactivity and selectivity of the catalysts were examined.
考察了催化剂焙烧温度、空速、碱含量、反应温度和不同阴、阳离子改性对催化剂活性和选择性的影响。
Biocatalysis has many advantages such as effective activator, mild reaction, high selectivity and purity.
生物催化具有反应条件温和、高度选择性、产物纯度高等优点。
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 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。
Furthermore, the selectivity and the mild reaction conditions of bio-catalysis is the cause of its industrial application for the modification of complicated target molecules.
此外，选择性和温和的反应条件使生物催化在工业上更多地用来修饰复杂的靶分子。
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。
Using computer programme, the effect element figure of inner diffusion on selectivity of consecutive reaction is drawn.
利用计算机编程绘制出内扩散对连续反应选择性的影响图。
We also studied the reaction conditions which influence on the conversion ratio, selectivity and yield.
研究了反应条件对转化率、选择性和收率的影响。
The conversion of terpineol was 94.1% and the selectivity of terpinyl acetate was 93.3% under the optimal reaction conditions.
在最佳反应条件下，松油醇的转化率为94.1%，乙酸松油酯的选择性为93.3%。
This method has simple procedure, fast reaction rate, high yields, mild reaction condition and high selectivity.
此法的特点是操作简便，反应速度快，收率高，反应条件温和，选择性高。
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。
Recently, some new methods, such as supercritical chemical reaction, membrane reaction, and reactive distillation, have been applied to improve the selectivity of complex reaction.
近年来，出现了一些提高复合反应选择性的新方法，如：超临界反应、膜反应、反应精馏等。
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。
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。
Furthermore, the catalytic mechanisms and impact factors on the product selectivity for a same organic reaction by zeolite and ionic liquid catalysis were discussed.
此外，还进一步讨论了分子筛和离子液体在同一有机反应中的催化作用机理以及影响产物选择性的主要因素。
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