Phosphomolybdic acid is widely used as active catalyst owing to its acid and redox activity.
磷钼酸具有良好的酸性和氧化还原活性，被广泛用作活性催化剂。
The results showed that the interaction between metal and support is the main factor affecting catalyst activity and stability.
结果表明，金属与载体之间的相互作用是影响催化剂活性和稳定性的重要因素。
The experimental results show that the catalyst has high catalytic activity and stability.
结果表明，该催化剂具有较高的催化活性和稳定性。
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 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 catalyst activity and stability are increased, and in the same time the catalyst cost is reduced.
提高催化剂活性和稳定性，同时降低催化剂成本。
It is a new and efficient gas catalyst can maintain high activity and capacity at normal temperature and pressure.
它是一种新型高效的气体催化剂，能在常温、常压下保持较高的活性与容量。
The catalyst was prepared by impregnating depositing process and the catalyst activity was evaluated with a continuous flow fixed bed reactor.
采用固定床连续流动反应装置，对此催化剂用于气相苯加氢制环已烷的活性进行评价。
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。
Taking the synthesis of butyl acetate by the catalytic esterification of acetic acid and butanol as a probe reaction, a series of studies on the preparation of the catalyst and its activity was made.
以乙酸和正丁醇催化酯化合成乙酸丁酯为探针反应，对氧化铌负载型催化剂的制备与催化活性进行了一系列研究，得出了优惠工艺条件。
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。
PdPM was used as a hydrocracking catalyst, which exhibited high activity of hydrocracking, strong aromatic saturation and good isomerization performances at lower temperature.
结果表明，钯层柱粘土是一种低温下裂化活性高、芳烃饱和性能强、异构化性能好的加氢催化剂。
Compared with conventional reduction, the reduction time is greatly shortened and catalyst activity after reduction is much better.
与常规还原法相比，快速还原法大大缩短了还原时间，且还原后催化剂活性更好。
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。
Some other methods for improving catalyst activity such as cathode catalyze, alloy catalyst are also reviewed in the paper. Finally, some reasonable advises are given based on these progresses.
也回顾了一些用于改善催化剂活性的其他方法，如阴极催化、合金催化剂，根据这些进展，对今后的研究方向提出了建议。
Pre-reduction can deactivate the activity of catalyst.
预还原则降低了催化剂的活性；
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 catalyst is characterized by higher activity and stability as well as lower hydrogen consumption.
该催化剂具有较高的活性、活性稳定性和较低的耗氢量。
The results show that immobilized catalyst has higher catalytic activity. The catalyst can be used times. The yield of glyceryl triacetate is above 92%.
实验表明：固定化催化剂活性高、可以重复使用多次，三醋酸甘油酯收率可达92 %以上。
Main reasons for decrease of catalyst activity were discussed, and catalyst regeneration experiment was made.
讨论了催化剂活性下降的主要原因，并进行了催化剂再生实验。
Microwave calcinations can be used to prepare the vanadium catalyst with higher activity and strengthen.
在工业钒催化剂的制备中，采用微波煅烧所得到的产品活性更高，机械强度更大。
The results show that the catalyst possesses high activity compared with conventional catalyst and imported catalyst G84-C under the same experimental conditions.
结果表明，在相同的反应条件下与普通催化剂和进口催化剂G84-C比较，这种催化剂具有较高的活性。
Results from commercial application showed that DZD-1 catalyst, with satisfactory activity and stability, was an excellent diesel oil hydrotreating catalyst.
结果表明，DZD 1加氢精制催化剂具有良好的活性和稳定性，是新一代优良的加氢精制催化剂。
In addition, on the basis of the information obtained by the characterization of catalyst composition, structure and morphology, activity and deactivation behavior of the catalyst were discussed.
此外，本文结合催化剂的组成、结构和表面形貌的表征对催化剂的催化活性和失活行为进行了讨论。
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。
Catalyst activity was determined by not only specific surface area of catalyst but also the distributions of active center and utilization ratio of internal surface.
催化剂活性不仅与比表面有关，还与其活性中心分布情况、内表面利用率有关。
DQ-1 catalyst is a high activity catalyst for propylene polymerization and co-polymerization. It is completely spherical with high stereoregularity, and high sensitivity towards hydrogen regulation.
结果证明，球形催化剂DQ -1是一种球形规整、活性高、定向能力高、具有良好的氢调性能及优良的共聚合性能的高效催化剂。
The deactivation of the catalyst of furfural decarbonylation is mainly due to carbon deposition attached to the catalyst surface, it leads to the active site embedded, so the catalyst losed activity.
糠醛脱羰催化剂失活的主要原因是大量积碳附着于催化剂表面使活性中心被包埋从而使催化剂失去活性。
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