The salts of para-tungstic and para-molybdic were heterogenized for their effective use as solid catalysts in the transesterification reaction of dimethyl carbonate and phenol by inserting them between the layers of Mg2Al-hydrotalcite.These catalysts were characterized by FT-IR spectra and X-ray powder diffraction.Polyoxometalates(POMs)clusters were intercalated into the interlayer of layered double hydroxide(LDH)via anion exchange with organic acid precursor in Mg2Al-LDH,and the integrity of the clusters [W7O24]6-and [Mo7O24]6-was maintained.The intercalated para-molybdic cluster showed high catalytic activity and reusability in the transesterification under mild reaction conditions.When the reaction was carried out at 180 ℃,with a molar ratio of phenol to DMC of 1∶1,a reaction time 10 h,and a catalyst amount 1%(wt),the conversion of phenol was 10.0%,the selectivities of diphenyl carbonate and methyl phenyl carbonate were 10.7% and 86.1%,respectively. The salts of para-tungstic and para-molybdic were heterogenized for their effective use as solid catalysts in the transesterification reaction of dimethyl carbonate and phenol by inserting them between the layers of Mg2Al-hydrotalcite. The factors are characterized by FT-IR spectra and X -ray powder diffraction. Polyoxometalates (POMs) clusters were intercalated into the interlayer of layered double hydroxide (LDH) via anion exchange with organic acid precursor in Mg2Al-LDH, and the integrity of the clusters [W7O24] 6-and [Mo7O24] 6 -was maintained. The intercalated para-molybdic cluster showed high catalytic activity and reusability in the transesterification under mild reaction conditions. The reaction was carried out at 180 ° C with a molar ratio of phenol to DMC of 1: 1, a reaction time 10 h, and a catalyst amount 1% (wt), the conversion of phenol was 10.0%, the selectivities of diphenyl carbonate and methyl phenyl carbonate were 10.7% and 86.1%, respectively.