The adsorption of PO on the reduced catalyst is more complicated and ketones may be produced.

而PO在还原态催化剂上的吸附行为较复杂，可能生成了酮类化合物。

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There is no accurate method for analyzing the reduction degree of pre-reduced catalyst for ammonia synthesis at present.

对预还原型氨合成催化剂还原度的分析，目前暂无相对准确的方法。

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The reduction step of catalyst with butene-2 and reoxidation step of reduced catalyst with oxygen were investigated by the pulse method.

用脉冲法研究了催化剂用丁烯- 2还原及还原催化剂用氧再氧化步骤。

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The company also said the new catalyst reduced the cost by 37% while complying with California state standards, which it described as among the strictest emissions regulations in the world.

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