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。

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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。

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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。

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The report on Adair's "preparation, instigation and organisation of terrorist activity" since his release claimed he had forged links with loyalist splinter group, the Loyalist Volunteer Force, and was involved in heightening tensions in interface areas.

BBC: Loyalist's fate known within days