Quaternary oxides and catalysts containing quaternary oxides
AssigneeThe Board of Trustees of the University of Illinois
InventorsRong-Cai Xie, Jian-Ku Shang, Pinggui Wu
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Abstract
A quaternary oxide includes a dopant metal, a dopant nonmetal, titanium, and oxygen. The atomic ratio of titanium, oxygen and dopant nonmetal may be 1:0.5-1.99:0.01-1.5. Quaternary oxides may be used in catalytic compositions, in coatings for disinfecting surfaces and in coatings for self-cleaning surfaces. A method of making a quaternary oxide includes combining ingredients including a titanium source, a dopant nonmetal source, a dopant metal salt, and a polar organic solvent to form a reaction mixture; and heating the reaction mixture.
Claims19
A method of making a catalytic composition, comprising:
- combining ingredients to form a reaction mixture, the ingredients comprising a titanium source, a dopant nonmetal source comprising at least one nonmetal selected from the group consisting of boron, nitrogen, sulfur and fluorine, a metal salt different from the dopant nonmetal source and not including titanium, and a polar organic solvent;
- and
- heating the reaction mixture to form a catalytic composition comprising titanium, the metal other than titanium, the dopant nonmetal, and oxygen.
A method of making a catalytic composition, the method comprising:
- combining a titanium source and a dopant nonmetal source comprising at least one nonmetal selected from the group consisting of boron, nitrogen, sulfur and fluorine with a polar organic solvent to form a first mixture;
- adding a metal salt different from the dopant nonmetal source and not including titanium to the first mixture to form a reaction mixture;
- heating the reaction mixture at a temperature of from 50° C. to 250° C. for a period of at least 4 hours;
- removing a precipitate from the reaction mixture;
- and
- calcining the precipitate, thereby forming a catalytic composition comprising titanium, the metal other than titanium, the dopant nonmetal, and oxygen.
A method of making a catalytic composition, comprising:
- combining a polar organic solvent with a dopant nonmetal source comprising at least one nonmetal selected from the group consisting of boron, nitrogen, sulfur and fluorine to form a first mixture;
- adding a titanium source to the first mixture to form a second mixture;
- adding a metal salt different from the dopant nonmetal source and not including titanium to the second mixture to form a reaction mixture;
- and
- heating the reaction mixture in an autoclave at a temperature of from 100° C. to 350° C. for a period of at least 4 hours to form a catalytic composition comprising titanium, the metal other than titanium, the dopant nonmetal, and oxygen.
Dependencies are inferred from the claim text.