화학공학소재연구정보센터
Przemysl Chemiczny, Vol.90, No.3, 475-480, 2011
Supported Pd-Te catalysts for selective oxidation of glucose to gluconic acid in liquid phase
Te was added (2% by mass) to the SiO(2), Al(2)O(3), TiO(2), mol. sieve 13X and C-supported Pd (5% by mass) catalysts during their prodn. by impregnation of supports with aq. solns. of PdCl(2) or/and H(6)TeO(6). The Te-modified Pd catalysts were used for liq. phase oxidn. of glucose to CH(2)OH(CHOH)(4)COOH and showed higher activity and selectivity than the monometallic Pd catalysts. The presence of PdTe intermetallic was evidenced in the catalysts by temp.-programmed redn., X-ray diffraction and secondary ion mass spectrometry with time of flight anal.