[미국특허]
Vapor phase preparation of fluorided solid oxides
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C08F-004/02
C08F-004/60
C08F-004/6592
C08F-010/00
출원번호
US-0594906
(2012-08-27)
등록번호
US-8916494
(2014-12-23)
발명자
/ 주소
McDaniel, Max P.
Collins, Kathy S.
Yang, Qing
Crain, Tony R.
출원인 / 주소
Chevron Phillips Chemical Company LP
대리인 / 주소
Merchant & Gould
인용정보
피인용 횟수 :
6인용 특허 :
97
초록
Methods for the vapor phase preparation of fluorided solid oxide activator-supports, using certain calcining temperatures and fluoriding temperatures, are disclosed.
대표청구항▼
1. A process to produce a fluorided solid oxide, the process comprising: (a) calcining a solid oxide at a peak calcining temperature to produce a calcined solid oxide; and(b) contacting the calcined solid oxide at a peak fluoriding temperature with a vapor comprising a fluorine-containing compound t
1. A process to produce a fluorided solid oxide, the process comprising: (a) calcining a solid oxide at a peak calcining temperature to produce a calcined solid oxide; and(b) contacting the calcined solid oxide at a peak fluoriding temperature with a vapor comprising a fluorine-containing compound to produce the fluorided solid oxide;wherein the peak fluoriding temperature is at least about 50° C. less than the peak calcining temperature, andwherein the surface area of the fluorided solid oxide produced by the process is at least about 5% greater than a surface area of a fluorided solid oxide obtained by performing the contacting step at the peak calcining temperature. 2. The process of claim 1, wherein: the peak calcining temperature is in a range from about 500° C. to about 1000° C.;the peak fluoriding temperature is in a range from about 350° C. to about 650° C.;the peak fluoriding temperature is from about 60° C. to about 600° C. less than the peak calcining temperature; orany combination thereof. 3. The process of claim 1, wherein: the peak calcining temperature is in a range from about 600° C. to about 750° C.;the peak fluoriding temperature is in a range from about 400° C. to about 600° C.;the peak fluoriding temperature is from about 75° C. to about 400° C. less than the peak calcining temperature; orany combination thereof. 4. The process of claim 1, wherein: the fluorine-containing compound comprises perfluorohexane, perfluoroacetic anhydride, tetrafluoroethane, or a combination thereof; and/orthe fluorided solid oxide comprises fluorided alumina, fluorided silica-alumina, fluorided silica-zirconia, fluorided silica-titania, fluorided silica-coated alumina, or a combination thereof. 5. The process of claim 1, wherein the fluorine-containing compound comprises a fluorocarbon. 6. The process of claim 1, wherein the solid oxide comprises silica, alumina, titania, zirconia, magnesia, boria, silica-alumina, silica-coated alumina, silica-titania, silica-zirconia, alumina-boria, or any combination thereof. 7. The process of claim 6, wherein the fluorided solid oxide comprises fluorided silica-alumina, fluorided silica-coated alumina, fluorided alumina, or a combination thereof. 8. The process of claim 1, wherein step (a) and step (b) are performed in an oxidizing atmosphere. 9. The process of claim 1, wherein: the fluorided solid oxide comprises from about 5 to about 12 wt. % fluorine, based on the weight of the fluorided solid oxide; and/orthe vapor comprises from about 100 ppmv to about 20 volume % fluorine-containing compound. 10. The process of claim 1, wherein: the contacting in step (b) is performed for a time period of less than about 8 hr; andthe fluorine-containing compound is present in the vapor for less than about 15 min. 11. The process of claim 1, wherein the fluorided solid oxide has: a pore volume in a range from about 1.2 to about 2 mL/g; anda surface area in a range from about 275 to about 700 m2/g. 12. The process of claim 1, wherein the catalyst activity of a catalyst system containing the fluorided solid oxide produced by the process is at least about 5% greater than that of a catalyst system containing a fluorided solid oxide obtained by performing the contacting step at the peak calcining temperature. 13. A fluorided solid oxide produced by the process of claim 1. 14. A catalyst composition comprising a transition metal compound and the fluorided solid oxide of claim 13. 15. A polymerization process comprising contacting the catalyst composition of claim 14 with an olefin monomer and optionally an olefin comonomer under polymerization conditions to produce an olefin polymer. 16. A process to produce a fluorided solid oxide, the process comprising: (a) calcining a solid oxide at a peak calcining temperature in an oxidizing atmosphere to produce a calcined solid oxide; and(b) contacting the calcined solid oxide at a peak fluoriding temperature with a vapor comprising a fluorine-containing compound and oxygen to produce the fluorided solid oxide;wherein the peak fluoriding temperature is from about 50° C. to about 600° C. less than the peak calcining temperature, andwherein the surface area of the fluorided solid oxide produced by the process is at least about 5% greater than a surface area of a fluorided solid oxide obtained by performing the contacting step at the peak calcining temperature. 17. The process of claim 16, wherein: the peak calcining temperature is in a range from about 550° C. to about 900° C.;the peak fluoriding temperature is in a range from about 350° C. to about 650° C.; andthe peak fluoriding temperature is from about 75° C. to about 300° C. less than the peak calcining temperature. 18. The process of claim 16, wherein: the fluorine-containing compound comprises perfluorohexane, perfluoroacetic anhydride, tetrafluoroethane, or a combination thereof; andthe fluorided solid oxide comprises fluorided silica-alumina, fluorided silica-coated alumina, fluorided alumina, or a combination thereof. 19. The process of claim 16, wherein: the surface area of the fluorided solid oxide produced by the process is from about 5% to about 15% greater than a surface area of a fluorided solid oxide obtained by performing the contacting step at the peak calcining temperature; andthe catalyst activity of a catalyst system containing the fluorided solid oxide produced by the process is at least about 10% greater than that of a catalyst system containing a fluorided solid oxide obtained by performing the contacting step at the peak calcining temperature.
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