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
Highly ordered cubic Zr-doped mesoporous silica was directly prepared with Evaporation-Induced Self Assembly method(EISA) with triblock copolymers(Pluronic P123) as the structure-directing agents.The mesoporous materi...Highly ordered cubic Zr-doped mesoporous silica was directly prepared with Evaporation-Induced Self Assembly method(EISA) with triblock copolymers(Pluronic P123) as the structure-directing agents.The mesoporous material was characterized via small-angle powder X-ray diffraction(XRD),transmission electron microscopy(TEM),and nitrogen adsorption.The results show that the product has a face-centered cubic structure with space group of Fd3m.N2 sorption revealed that the Zr-doped mesoporous silica has not only ordered structures,but also high surface area(550 m2/g),large pore volume(0.66 cm3/g),as well as uniform pore size(4.0 nm).展开更多
An ordered hexagonal pore sub-mesostructured silica was synthesized via ionic liquid 1-hexadecane-3-methylimidazolium bromide(C16MIB) as structure-directing agents in acidic media.By combining the results of transmisi...An ordered hexagonal pore sub-mesostructured silica was synthesized via ionic liquid 1-hexadecane-3-methylimidazolium bromide(C16MIB) as structure-directing agents in acidic media.By combining the results of transmision electron microscopy,X-ray diffraction and surface area measurements,an elementary structure and characterization of the samples was obtained.This material performs two-dimensional hexagonal framework structure being analogous to MCM-41 and SBA-3 silicas in long range order,but the position of reflection peaks of X-ray diffraction shifts to a wide angle compared with those of MCM-41 and SBA-3.The sub-mesostructured silica has high BET specific surface area of 1360 m2/g,as well as small pore size of 1.8 nm.展开更多
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 ℃.
文摘Highly ordered cubic Zr-doped mesoporous silica was directly prepared with Evaporation-Induced Self Assembly method(EISA) with triblock copolymers(Pluronic P123) as the structure-directing agents.The mesoporous material was characterized via small-angle powder X-ray diffraction(XRD),transmission electron microscopy(TEM),and nitrogen adsorption.The results show that the product has a face-centered cubic structure with space group of Fd3m.N2 sorption revealed that the Zr-doped mesoporous silica has not only ordered structures,but also high surface area(550 m2/g),large pore volume(0.66 cm3/g),as well as uniform pore size(4.0 nm).
文摘An ordered hexagonal pore sub-mesostructured silica was synthesized via ionic liquid 1-hexadecane-3-methylimidazolium bromide(C16MIB) as structure-directing agents in acidic media.By combining the results of transmision electron microscopy,X-ray diffraction and surface area measurements,an elementary structure and characterization of the samples was obtained.This material performs two-dimensional hexagonal framework structure being analogous to MCM-41 and SBA-3 silicas in long range order,but the position of reflection peaks of X-ray diffraction shifts to a wide angle compared with those of MCM-41 and SBA-3.The sub-mesostructured silica has high BET specific surface area of 1360 m2/g,as well as small pore size of 1.8 nm.
