Synthesis and use of nanocrystalline zeolites
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01D-053/56
B01D-053/86
B01D-047/00
B01D-053/94
B01J-008/00
B01J-008/02
C01B-021/00
B01J-029/08
출원번호
UP-0510776
(2009-07-28)
등록번호
US-7858062
(2011-02-24)
발명자
/ 주소
Larsen, Sarah
Grassian, Vicki
Song, Weiguo
Li, Gonghu
출원인 / 주소
University of Iowa Research Foundation
대리인 / 주소
Schwegman, Lundberg & Woessner, P.A.
인용정보
피인용 횟수 :
1인용 특허 :
19
초록▼
Embodiments of the present invention relate to a method for synthesizing nanocrystalline zeolites, the method comprising contacting starting products that comprise a solvent, a silicon source, a cation base, an organic template, and an aluminum source, or any combination thereof sufficient to produc
Embodiments of the present invention relate to a method for synthesizing nanocrystalline zeolites, the method comprising contacting starting products that comprise a solvent, a silicon source, a cation base, an organic template, and an aluminum source, or any combination thereof sufficient to produce a zeolite gel by hydrolysis, heating the zeolite gel sufficient to produce a first batch of zeolite crystals and a first clear solution, separating the first batch of zeolite crystals from the first clear solution, heating the first clear solution sufficient to produce a second batch of zeolite crystals and second clear solution and separating the second batch of zeolite crystals from the second clear solution. In addition, embodiments relate to a method of using nanocrystalline zeolites, the method comprising contacting a nanocrystalline zeolite with a reductant sufficient to produce a nanocrystalline zeolite with adsorbed reductant and exposing the nanocrystalline zeolite with adsorbed reductant to reactant gases sufficient to obtain reaction products and the nanocrystalline zeolite.
대표청구항▼
What is claimed is: 1. A method for the reduction of reactant gases comprising: (a) contacting a nanocrystalline zeolite with a reductant, sufficient to produce a nanocrystalline zeolite with adsorbed reductant thereon; and (b) exposing the nanocrystalline zeolite with adsorbed reductant thereon to
What is claimed is: 1. A method for the reduction of reactant gases comprising: (a) contacting a nanocrystalline zeolite with a reductant, sufficient to produce a nanocrystalline zeolite with adsorbed reductant thereon; and (b) exposing the nanocrystalline zeolite with adsorbed reductant thereon to reactant gases, for a sufficient time and at a sufficient temperature to obtain reduction of the reactant gases; wherein the nanocrystalline zeolite has a particle size of less than about 100 nm; wherein the reductant comprises ammonia; wherein the nanocrystalline zeolite comprises zeolite NaY. 2. The method of claim 1, wherein the reactant gases comprise nitric oxide (NO). 3. The method of claim 1, wherein the reactant gases comprise nitrogen dioxide (NO2). 4. The method of claim 1, wherein the reaction products comprise water, nitrogen gas (N2), nitrous oxide (N2O), or any combination thereof. 5. The method of claim 1, wherein the reactant gases comprise oxides of nitrogen (NOx). 6. A method for the reduction of reactant gases comprising: (a) contacting a nanocrystalline zeolite with a reductant, sufficient to produce a nanocrystalline zeolite with adsorbed reductant thereon; and (b) exposing the nanocrystalline zeolite with adsorbed reductant thereon to reactant gases, for a sufficient time and at a sufficient temperature to obtain reduction of the reactant gases; wherein the nanocrystalline zeolite has a particle size of less than about 100 nm; wherein the reductant comprises ammonia. 7. The method of claim 6, wherein the nanocrystalline zeolite comprises a transition metal, alkali, or alkaline earth nanocrystalline zeolite Y. 8. The method of claim 6, wherein the nanocrystalline zeolite comprises zeolite NaY. 9. The method of claim 6, wherein the reactant gases comprise nitric oxide (NO). 10. The method of claim 6, wherein the reactant gases comprise nitrogen dioxide (NO2). 11. The method of claim 6, wherein the reaction products comprise water, nitrogen gas (N2), nitrous oxide (N2O), or any combination thereof. 12. The method of claim 6, wherein the reactant gases comprise oxides of nitrogen (NOx). 13. A method for the reduction of reactant gases comprising: (a) contacting a nanocrystalline zeolite with a reductant, sufficient to produce a nanocrystalline zeolite with adsorbed reductant thereon; and (b) exposing the nanocrystalline zeolite with adsorbed reductant thereon to reactant gases, for a sufficient time and at a sufficient temperature to obtain reduction of the reactant gases; wherein the nanocrystalline zeolite has a particle size of less than about 100 nm; wherein the nanocrystalline zeolite comprises zeolite NaY. 14. The method of claim 13, wherein the reductant comprises urea. 15. The method of claim 13, wherein the reductant comprises ammonia. 16. The method of claim 13, wherein the reactant gases comprise nitric oxide (NO). 17. The method of claim 13, wherein the reactant gases comprise nitrogen dioxide (NO2). 18. The method of claim 13, wherein the reaction products comprise water, nitrogen gas (N2), nitrous oxide (N2O), or any combination thereof. 19. The method of claim 13, wherein the reactant gases comprise oxides of nitrogen (NOx).
Chandler, Guy Richard; Rajaram, Raj Rao; Goersmann, Claus Friedrich; Self, Valerie Anne, Process and apparatus for reducing the nitrogen oxide content in exhaust gases by the controlled addition of NH3.
Ichihashi Hiroshi,JPX ; Sugita Keisuke,JPX ; Yako Makoto,JPX, Process for producing pentacyl-type crystalline zeolites and a process for producing .epsilon.-caprolactam using the same.
Pastorello Fabio (Milan ITX) Troglia Claudio (Milan ITX), Process for the manufacture of zeolites 4A having a high crystallinity and a fine granulometry and being particularly su.
Farnos Maria D. (Wilmington DE) McWilliams John P. (Woodbury NJ) Sharma Sanjay B. (Langhorne PA) Shihabi David S. (Pennington NJ) Stevenson Scott A. (Langhorne PA) Vartuli James C. (West Chester PA), Selective catalytic reduction of nitrogen oxides using an iron impregnated zeolite catalyst.
Harris, Michael; Leyrer, Jurgen; Demel, Yvonne; Lox, Egbert; Kreuzer, Thomas, Structured catalysts for selective reduction of nitrogen oxides by ammonia using a compound that can be hydrolyzed to ammonia.
Descat Gilles (Saint Avold FRX) Hamon Christian (Saint Nazaire FRX), Zeolite Y-based catalytic composition for use in the treatment of oxygenated effluents containing nitrogen oxides, its p.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.