在该类催化体系中，多种不同的催化活性位点协同催化有机合成反应。
In the multi-functional catalytic system, multiple parts of a catalyst or multiple catalysts work together to promote a specific reaction.
并分别深入探讨了A位和B位掺杂元素、掺杂比例对催化活性中心离子的影响。
The influence of doping elements in A site and B site and the doping ratio on the catalytic activity of perovskite-type oxides was also respectively discussed in this thesis.
结果表明，催化剂不同反应位上的催化活性不同，边位的催化活性较高。
It was found that different reaction sites on catalyst possessed different catalytic activity among which those edge reaction sites possessed higher activity.
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