The addition of PVA or Na?2CO?3 does not inhibited the formation of Pd black, however, the addition of Na?2CO?3 resulted in the obvious increase of hydrogenation rate and selectivity.

• 而添加PVA和Na2CO3，虽然都不能抑制钯黑的形成，但后者的添加会明显提高加氢速度；