The catalyst gets high activity and DPC yield is 44.8%, when calcination temperature is 500?, Pb(NO3)2and Zn(NO3)2 as precursors, and Pb:Zn=2:l.

• 当焙烧温度为500℃、Pb(NO_3)_2和Zn(NO_3)_2作母体、二者比为2:1时，DPC产率达44.；8%25。