Composition based on zirconium oxides, praseodymium, lanthanum or neodymium, method for the preparation and use thereof in a catalytic system
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01J-023/10
C01G-025/00
B01D-053/94
B01J-023/63
B01J-037/00
B01J-037/03
B01J-021/06
B01J-035/10
출원번호
US-0275516
(2011-10-18)
등록번호
US-9181104
(2015-11-10)
우선권정보
FR-04 01948 (2004-02-26)
발명자
/ 주소
Larcher, Olivier
Moissonnier, Philippe
Rohart, Emmanuel
출원인 / 주소
Rhodia Chimie
인용정보
피인용 횟수 :
0인용 특허 :
5
초록▼
The composition is based on zirconium oxide and at least one additive selected from zirconium oxide and at least one additive chosen from praseodymium, lanthanum or neodymium oxides, has a specific surface of at least 29 m 2/g after calcination at 1000° C. during a period of 10 hours and is obtained
The composition is based on zirconium oxide and at least one additive selected from zirconium oxide and at least one additive chosen from praseodymium, lanthanum or neodymium oxides, has a specific surface of at least 29 m 2/g after calcination at 1000° C. during a period of 10 hours and is obtained by a method wherein a mixture of zirconium compounds and additive is precipitated with a base; the medium thus obtained, containing a precipitate, is heated and a compound chosen from anionic surfactants, non-ionic surfactants, polyethylene glycols, carboxylic acids and the salts thereof and surfactants such as the ethoxylates of caroboxymethyl fatty alcohols is added to the compound and the precipitate is calcinated; the composition can be used as a catalyst.
대표청구항▼
1. A calcined composition consisting of zirconium oxide and at least one additive, the at least one additive being selected from the group consisting of oxides of praseodymium, lanthanum and neodymium, the composition having mesopores between 10 nm and 500 nm in diameter, the mesopores being present
1. A calcined composition consisting of zirconium oxide and at least one additive, the at least one additive being selected from the group consisting of oxides of praseodymium, lanthanum and neodymium, the composition having mesopores between 10 nm and 500 nm in diameter, the mesopores being present in an amount of at least 30% of the total pore volume, the composition being capable of having a specific surface area of at least 29 m2/g after calcining for 10 hours at 1000° C. 2. The composition as claimed in claim 1, wherein the additive content is 5% to 40% by weight of additive oxide with respect to the weight of the composition. 3. The composition as claimed in claim 1, the composition being 60% zirconium oxide and 40% praseodymium oxide, based on weight percentages of the oxides ZrO2 and Pr6O11, respectively. 4. The composition as claimed in claim 1, the composition being 85% zirconium oxide and 15% praseodymium oxide, based on weight percentages of the oxides ZrO2 and Pr6O11, respectively. 5. The composition as claimed in claim 1, the composition being 90% zirconium oxide and 10% praseodymium oxide, based on weight percentages of the oxides ZrO2 and Pr6O11, respectively. 6. The composition as claimed in claim 1, the composition being 90% zirconium oxide and 10% lanthanum oxide, based on weight percentages of the oxides ZrO2 and La2O3, respectively. 7. The composition as claimed in claim 1, the composition being 90% zirconium oxide and 10% neodymium oxide, based on weight percentages of the oxides ZrO2 and Nd2O3, respectively. 8. The composition as claimed in claim 1, the composition being 80% zirconium oxide and 20% praseodymium oxide, based on weight percentages of the oxides ZrO2 and Pr6O11, respectively. 9. The composition as claimed in claim 1, the composition being capable of having a specific surface area of at least 35 m2/g after calcining for 10 hours at 1000° C. 10. The composition as claimed in claim 2, the composition being capable of having a specific surface area of at least 35 m2/g after calcining for 10 hours at 1000° C. 11. The composition as claimed in claim 9, the composition being capable of having a specific surface area of at least 40 m2/g after calcining for 10 hours at 1000° C. 12. The composition as claimed in claim 10, the composition being capable of having a specific surface area of at least 40 m2/g after calcining for 10 hours at 1000° C. 13. The composition as claimed in claim 11, the composition being capable of having a specific surface area of at least 50 m2/g after calcining for 10 hours at 1000° C. 14. The composition as claimed in claim 12, the composition being capable of having a specific surface area of at least 50 m2/g after calcining for 10 hours at 1000° C. 15. The composition as claimed in claim 1, wherein the zirconium oxide and the at least one additive form a solid solution. 16. The composition as claimed in claim 2, wherein the zirconium oxide and the at least one additive form a solid solution. 17. The composition as claimed in claim 1, wherein the additive content is 10% to 30% by weight of additive oxide with respect to the weight of the composition. 18. The composition as claimed in claim 2, wherein the additive content is 10% to 30% by weight of additive oxide with respect to the weight of the composition. 19. The composition as claimed in claim 1, wherein the mesopores are present in an amount of at least 40% of the total pore volume. 20. The composition as claimed in claim 2, wherein the mesopores are present in an amount of at least 40% of the total pore volume. 21. The composition as claimed in claim 1, said composition being capable of having a specific surface area of at least 2 m2/g after calcining for 10 hours at 1200° C. 22. The composition as claimed in claim 2, said composition being capable of having a specific surface area of at least 2 m2/g after calcining for 10 hours at 1200° C. 23. A catalyst support comprising the composition of claim 1. 24. A substrate having a wash coat applied thereon, said wash coat comprising the composition of claim 1. 25. A calcined composition consisting of zirconium oxide and at least one additive, the at least one additive being selected from the group consisting of oxides of praseodymium, lanthanum and neodymium, the composition having mesopores between 10 nm and 500 nm in diameter, the mesopores being present in an amount of at least 30% of the total pore volume, the composition being capable of having a specific surface area of at least 29 m2/g after calcining for 10 hours at 1000° C. and being capable of having a specific surface area of at least 10 m2/g after calcining for 4 hours at 1100° C., wherein the additive content is 5% to 40% by weight of additive oxide with respect to the weight of the composition. 26. The composition as claimed in claim 25, wherein the additive content is 10% to 30% by weight of additive oxide with respect to the weight of the composition. 27. The composition as claimed in claim 25, wherein the mesopores are present in an amount of at least 40% of the total pore volume. 28. The composition as claimed in claim 25, said composition being capable of having a specific surface area of at least 2 m2/g after calcining for 10 hours at 1200° C. 29. A catalyst support comprising the composition of claim 25. 30. A substrate having a wash coat applied thereon, said wash coat comprising the composition of claim 25.
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이 특허에 인용된 특허 (5)
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