Catalytic efficiency of copper oxide in degradation of phenol using sintered calcium phosphate (SCaP) as catalyst support

For the first time sintered calcium phosphate is explored as catalyst–support, analogous to silica, alumina etc. The present work involves preparation of catalysts by depositing copper oxide over the sintered calcium phosphate using three techniques, viz., impregnation of CuO, impregnation of copper (II) nitrate & calcination, reduction of Cu2 + ions on the support & calcination. The above samples were characterized using XRD, UV-DRS, SEM-EDAX, BET surface area and acidity. Oxidation of phenol was studied with the above catalysts and sintered calcium phosphate was found to be an efficient catalyst–support.

Figure optionsDownload as PowerPoint slideHighlights
► Sintered calcium phosphate (SCaP) used as the catalyst–support for the first time.
► Fine particles of CuO were deposited over SCaP using DRC technique.
► Phenol degradation of 95% at room temperature was achieved within 90 min of reaction time.
► Induction period was as low as 10 min of reaction time.