Pd2+的还原在反应开始的前一个小时反应快速进行，还原物质的吸光度明显

The reduction of Pd2+ proceeds rapidly one hour before the start of the reaction, and the absorbance of the reducing substance is significantly reduced. After continuing to extend the reaction time to 4 h and continuing to delay the time, the peak of the reduction product no longer changes, indicating that the Na2PdCl4 precursor has been completely reduced.

The reduction of Pd2 plus reacts quickly one hour before the reaction begins, and the absorbentness of the reduced substance is significantly reduced. After the continuous extension of the reaction time to 4 h, the delay time continues and the peak of the reduced object does not change, indicating that the Na2PdCl4 precarns are fully restored.

The reduction of Pd2 + takes place rapidly one hour before the beginning of the reaction, and the absorbance of the reducing substance decreases obviously. When the reaction time was prolonged to 4 h, the peak of the reduced product did not change, indicating that the reduction of na2pdcl4 precursor was completed.<br>