Pre-reduction can deactivate the activity of catalyst.
预还原则降低了催化剂的活性；
The time of sulfurization is shorter, the temperature of bed layer is stable, and the activity of catalyst is high, while it is used for the sulfurization of Co-Mo catalysts.
进行钴—钼系催化剂硫化，具有硫化时间短，床层温度平稳等特点，且催化剂可获更高活性。
The alkylation catalyst has superior activity and stability; it can be widely used in similar new-built units or revamping for capacity expansion of old units.
烷基化催化剂具有良好的活性和稳定性，可在同类装置新建或扩能改造中推广应用。
The experimental results showed high catalytic activity of the catalyst, mild reaction conditions, and convenient in application.
实验结果表明该催化剂活性高，反应条件温和，方法简便。
The catalyst activity somewhat decreased and the stability of the catalyst was improved obviously.
催化剂的活性有所降低，稳定性显著增强。
The influences of preparation methods on catalyst activity were examined.
考察了制备方法对催化剂活性的影响。
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 effect of the pore volume and surface area of hydrotreating catalyst on its activity was studied.
考察了加氢精制催化剂的孔容和比表面对其活性的影响。
The effects of catalyst preparation and hydrogenation conditions on the activity of copper-chromium oxide catalysts for selective hydrogenation of soybean oil was investigated.
通过铜铬氧化物催化剂用于豆油的选择氢化，研究了制备方法及氢化条件对催化剂活性的影响。
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。
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。
Inorganic or organic acidic ligands play an important role in activity of the catalyst. Their proper acidity and chelated strength do favor to active structure of catalyst.
无机或有机酸性配体对催化剂的活性有显著影响，适当强的酸度和配位强度有利于催化剂活性结构的稳定。
The effects of catalyst preparation method and operating conditions for the hydrogenation activity of catalysts were tested.
分析了催化剂的制备方法、类型及加氢反应条件对催化剂活性的影响。
The initial activity of catalyst in isomerization reaction of propylene oxide have been evaluated with microreactorchromatograph.
采用微反-色谱联合装置对环氧丙烷开环异构化反应中催化剂的初活性进行了评选。
The water increases the activity of the catalyst, and the isooctanol improves the stability of the catalyst greatly.
微量水分的存在对催化剂的活性有很大促进作用。 异辛醇调节剂则使催化剂的稳定性大大提高。
The catalyst regeneration can be carried with air and steam for burning off the coke, and the activity of the regenerated catalyst was similar to that of fresh catalyst.
可用常规的空气和水蒸气进行烧焦再生，再生剂的活性与新鲜催化剂相当。
The etherification activity of the deactivated E-01 catalyst can be completely recovered by coke-burning regeneration.
通过烧焦再生，失活e -01催化剂的醚化活性可以完全恢复。
The simulation results showed that under the same coke level, the activity of the coked catalyst depended on the location of the coked sites and the relative coke growth rate.
模拟结果表明，在一定的积炭量下，催化剂的活性主要与积炭的位置及焦炭相对增长速率有关。
The result showed that the activity of the isomerization catalyst made from such high silica mordenite can satisfy the industrial demand.
结果表明，采用本高硅载体制成的异构化催化剂活性达到了工业要求。
Higher temperature of furnace increases the activity of the catalyst.
炉温的升高有利于提高催化剂的活性。
Regeneration of the deactivated catalyst was conducted by passing carrier gas at given temperature through the catalyst, resulting in the recovery of its initial activity.
同时进行了催化剂的再生研究，在载气下于一定温度将催化剂热再生，基本上可恢复催化剂的活性。
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 behaviors of propylene polymerization under atmospheric pressure and the influence of electron donors on the activity and the isotacticity of the catalyst were investigated.
研究了所合成的催化剂催化丙烯常压聚合反应行为，考察了琥珀酸酯类给电子体对催化剂活性及聚丙烯等规度的影响。
It was also verified that the activity of the catalyst remained stable after 11 times of recycle.
实验验证了该催化剂的活性在11次循环后仍保持稳定。
The results showed that the macrostructure, the composition of the crystal phase and the catalytic activity of the catalyst are related to the calcining temperature.
结果表明：焙烧温度对催化剂的宏观结构、晶相组成和催化活性均有影响；
The activity of the catalyst is greatly influenced by the ratio of length anddiameter.
催化剂的高径比对催化剂的活性影响很大。
The results indicated that the high dispersive method can enhance the activity of the catalyst for hydrogenation and the ability to inhibit coke formation.
结果表明。高分散加入法能显著地提高催化剂的加氢活性和抑制生焦能力。
The activity and stability of the catalyst showed better than those of cobalt phthalocyanine sulfonate.
催化剂的活性组分在使用过程中不流失，其活性和稳定性均优于磺化酞菁钴催化剂。
IR characterization showed that there was traced sulfate formed on surface of the catalyst after its activity was inhibited.
运用红外表征手段对活性抑制后的催化剂表面进行研究，发现有微量的硫酸盐生成。
The catalyst composition improves activity of the catalyst.
所述催化剂组合物提高了催化剂活性。
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