Process of using germanium zeolite catalyst for alkane aromatization
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0387179
(2009-04-29)
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등록번호 |
US-8153852
(2012-04-10)
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발명자
/ 주소 |
- Ellis, Paul E.
- Juttu, Gopalakrishnan G.
- Khanmamedova, Alla K.
- Mitchell, Scott F.
- Stevenson, Scott A.
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출원인 / 주소 |
- Saudi Basic Industries Corporation
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
4 인용 특허 :
8 |
초록
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This invention is for a catalyst for conversion of alkanes having two to six carbon atoms per molecule to aromatics. The catalyst is a MFI zeolite with a crystallite size of less than 15 microns with, in addition to silicon and aluminum, germanium as a framework element. Platinum is deposited on the
This invention is for a catalyst for conversion of alkanes having two to six carbon atoms per molecule to aromatics. The catalyst is a MFI zeolite with a crystallite size of less than 15 microns with, in addition to silicon and aluminum, germanium as a framework element. Platinum is deposited on the zeolite. The zeolite may contain other optional tetravalent and trivalent elements in the zeolite framework. The catalyst is synthesized by preparing a zeolite containing aluminum, silicon, germanium and, optionally, other elements in the framework, calcining the zeolite and depositing platinum on the zeolite. The catalyst may be used for aromatization of alkanes, such as propane, to aromatics, such as benzene, toluene and xylenes.
대표청구항
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1. A process for converting a hydrocarbon feed containing alkanes having two to six carbon atoms per molecule to aromatics comprising contacting the hydrocarbon feed at aromatizing conditions with a catalyst to form the aromatics, wherein the catalyst comprises: a) a MFI zeolite having a crystallite
1. A process for converting a hydrocarbon feed containing alkanes having two to six carbon atoms per molecule to aromatics comprising contacting the hydrocarbon feed at aromatizing conditions with a catalyst to form the aromatics, wherein the catalyst comprises: a) a MFI zeolite having a crystallite size of less than 15 microns andb) platinum deposited on the zeolitewherein germanium is a framework element of the zeolite. 2. The process of claim 1 wherein the MFI zeolite has a crystallite size of more than about 0.2 micron. 3. The process of claim 1 wherein the MFI zeolite has a crystallite size from about 1 micron to about 7 microns. 4. The process of claim 1 wherein the MFI zeolite has a crystallite size from about 1 micron to about 4 microns. 5. The process of claim 1 wherein the MFI zeolite has a crystallite size from about 1.5 micron to about 2 microns. 6. The process of claim 1 wherein tin, lead, zirconium, titanium, vanadium, chromium, gallium, boron, indium, thallium, iron, zinc, phosphorus and combinations thereof are framework elements of the zeolite. 7. The process of claim 1 wherein platinum is present in the range of from 0.05% to 3% by weight. 8. The process of claim 1 wherein platinum is present in the range of from 0.15% to 2% by weight. 9. The process of claim 1 wherein platinum is present in the range of from 0.15% to 1.5% by weight. 10. The process of claim 1 wherein the hydrocarbon feed additionally contains sulfur. 11. A process for converting a hydrocarbon feed containing alkanes having two to six carbon atoms per molecule to aromatics comprising contacting the hydrocarbon feed at aromatizing conditions with a catalyst comprising: a MFI zeolite having a crystallite size of less than 15 microns platinum deposited on the zeolite and sulfur; andwherein germanium is a framework element of the zeolite. 12. The process of claim 1, wherein prior to contact with the feed, the catalyst is pretreated with a sulfur compound. 13. The process of claim 12 wherein the sulfur compound is H2S, CnH2n+2S where n=1-20, CnH2n+1S2 where n=2-22 or CnH2n+1S where n=2-22. 14. The process of claim 1 wherein the process is a dehydrocyclodimerization process operating at a temperature of about 350° C. to 650° C. and a pressure of about 10 to 2000 kPa gauge. 15. The process of claim 1 wherein the catalyst additionally comprises a binder selected from oxides of magnesium, aluminum, titanium, zirconium, thorium, silicon, boron or mixtures thereof. 16. The process of claim 15 wherein the binder is an oxide of silicon (silica). 17. The process of claim 1 wherein the catalyst has the formula |H+Pt|[Si91Ge4Al1O192]-MFI. 18. The process of claim 1 wherein the hydrocarbon feed comprises propane. 19. The process of claim 11 wherein the amount of sulfur on the catalyst is about 10 ppm to about 0.1 weight %.
이 특허에 인용된 특허 (8)
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Juttu, Gopalakrishnan G.; Smith, Robert Scott, Catalyst for aromatization of alkanes, process of making and using thereof.
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Miller Stephen J. (San Francisco CA) Mulaskey Bernie F. (Fairfax CA), Crystalline silicate catalyst and a reforming process using the catalyst.
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Miller Stephen J. (San Francisco CA) Mulaskey Bernie F. (Fairfax CA), Crystalline silicate catalyst and processes using the catalyst.
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Zones Stacey I. (San Francisco CA) Ziemer James N. (Hercules CA) Santilli Donald S. (Larkspur CA) Innes Robert A. (San Rafael CA) Holtermann Dennis L. (Crockett CA), Hydrocarbon conversion process using zeolite SSZ-32 having constraint index of 13 or greater.
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Smith Robert Scott ; Verduijn ; deceased Johannes Petrus,BEX ; van den Berge ; executrix by Jannetje Maatje,NLX ; Mohr Gary David ; Colle Thomas Herman, Hydrocarbon conversion using large crystal zeolite catalyst.
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Nacamuli Gerald J. ; Innes Robert A. ; Gloyn Arnold J., Manufacture of high purity benzene and para-rich xylenes by combining aromatization and selective disproportionation of impure toluene.
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Kline Jules M. (San Anselmo CA) Miller Stephen J. (San Francisco CA) Mulaskey Bernard F. (Fairfax CA), Staged catalyst processing to produce optimum aromatic barrel per calendar day aromatic production.
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Field Leslie A. (Oakland CA), Two-step reforming process.
이 특허를 인용한 특허 (4)
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Stevenson, Scott A.; Khanmamedova, Alla K.; Farmer, Dustin B.; Mitchell, Scott F.; Vartuli, Jim, Catalyst for conversion of hydrocarbons, process of making and process of using thereof—Ge zeolite.
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Khanmamedova, Alla K.; Mitchell, Scott F.; Stevenson, Scott A.; Juttu, Gopalakrishnan G., Catalyst for conversion of hydrocarbons, process of making and process of using thereof—bimetallic deposition.
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Khanmamedova, Alla; Stevenson, Scott, Catalyst with improved activity/selectivity for light naphtha aromatization.
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Khanmamedova, Alla; Stevenson, Scott; Farmer, Dustin; Mier, Mike, Germanium silicalite catalyst and method of preparation and use.
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