The selective H2O2 oxidation reaction of phenol to catechol on Ln-ZrO2 catalyst has improved the selectivity to 85%, to compare with the conventional titania catalyst. With addition of rare earth such as lanthanum, ne...The selective H2O2 oxidation reaction of phenol to catechol on Ln-ZrO2 catalyst has improved the selectivity to 85%, to compare with the conventional titania catalyst. With addition of rare earth such as lanthanum, neodymium, to zirconia as catalyst, the selectivity is increased by 72% and 60% respectively in comparison with the bare titania catalyst.展开更多
Copper hydroxyphosphate was rapidly synthesized by using a novel hydrothermal method, in which phosphoric acid and copper acetate hydrate are two mainly raw materials in the procedure of preparation without the presen...Copper hydroxyphosphate was rapidly synthesized by using a novel hydrothermal method, in which phosphoric acid and copper acetate hydrate are two mainly raw materials in the procedure of preparation without the presence of ethylenediamine. Compared with the conventional method, this new method cost less with less reaction time and without damage to environment. The resultant copper hydroxyphosphate samples were characterized by X-ray diffraction(XRD), single crystal X-ray diffraction and Leica optical microscopy. The as-synthesized samples show significant activities to the hydroxylation of phenol. The exposure of special crystal planes(011) and (101) can be used to explain the high hydroxylation activities of as-synthesized copper hydroxyphosphate at 80 ℃.展开更多
文摘The selective H2O2 oxidation reaction of phenol to catechol on Ln-ZrO2 catalyst has improved the selectivity to 85%, to compare with the conventional titania catalyst. With addition of rare earth such as lanthanum, neodymium, to zirconia as catalyst, the selectivity is increased by 72% and 60% respectively in comparison with the bare titania catalyst.
文摘Copper hydroxyphosphate was rapidly synthesized by using a novel hydrothermal method, in which phosphoric acid and copper acetate hydrate are two mainly raw materials in the procedure of preparation without the presence of ethylenediamine. Compared with the conventional method, this new method cost less with less reaction time and without damage to environment. The resultant copper hydroxyphosphate samples were characterized by X-ray diffraction(XRD), single crystal X-ray diffraction and Leica optical microscopy. The as-synthesized samples show significant activities to the hydroxylation of phenol. The exposure of special crystal planes(011) and (101) can be used to explain the high hydroxylation activities of as-synthesized copper hydroxyphosphate at 80 ℃.
