[특허]Method of adding an alkaline earth metal to a zeolitic catalyst

[미국특허] Method of adding an alkaline earth metal to a zeolitic catalyst 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01J-029/12
출원번호	US-0614889 (1984-05-29)
발명자 / 주소	Van Nordstrand, Robert A.
출원인 / 주소	Chevron Research Company
대리인 / 주소	LaPaglia, S. R.Turner, W. K.Schaal, E. A.
인용정보	피인용 횟수 : 29 인용 특허 : 1

초록 ▼

A method is disclosed for adding barium to a large-pore zeolite. The large-pore zeolite is ion exchanged with a barium nitrate solution at a pH of from 8 to 11; the ion exchanged large-pore zeolite is dried; the dried large-pore zeolite is calcined at a temperature of from 500° C. to 700° C.; and th

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1. A method of forming a zeolitic catalyst comprising: (a) contacting a type L zeolite with a barium salt solution at a pH of from 8 to 11; (b) drying said contacted type L zeolite at a temperature of from 70° C. to 130° C.; (c) calcining said dried type L zeolite at a temperature of from 500° C. to 700° C.; (d) contacting said calcined type L zeolite with said barium salt solution at a pH of from 8 to 11; (e) drying and calcining said doubly contacted type L zeolite; (f) impregnating the doubly contacted type L zeolite with a Group VIII metal; and (g) drying and calcining the impregnated type L zeolite to form a zeolitic catalyst. 2. A method of forming a zeolitic catalyst according to claim 1 wherein said Group VIII metal is platinum. 3. A method of forming a zeolitic catalyst according to claim 2 wherein said final reforming catalyst has from 8% to 10% by weight barium and from 0.2% to 1.0% by weight platinum. 4. A method of forming a zeolitic catalyst according to claim 1 wherein said final reforming catalyst contains an inorganic binder. 5. A method of forming a zeolitic catalyst according to claim 4 wherein said inorganic binder is selected from the group consisting of silica, alumina, and aluminosilicates. 6. A method of forming a zeolitic catalyst comprising: (a) contacting a potassium-type L zeolite with a barium nitrate solution at a temperature of from 25° C. to 100° C., at a pH of from 8 to 11, over a period of time of from 20 minutes to 4 hours; (b) drying said contacted type L zeolite at a temperature of from 70° C. to 130° C.; (c) calcining said dried type L zeolite at a temperature of from 550° C. to 650° C.; (d) contacting said calcined type L zeolite with said barium nitrate solution at a temperature of from 25° C. to 100° C., at a pH of from 8 to 11, over a period of time of from 20 minutes to 4 hours; (e) drying and calcining said doubly contacted type L zeolite; (f) impregnating said doubly contacted type L zeolite with platinum using tetrammineplatinum (II) nitrate; (g) drying and calcining said impregnated platinum-barium-type L zeolite; (h) reducing said calcined platinum-barium-type L zeolite in hydrogen at 480° C. to 500° C.; (i) mixing said reduced platinum-barium-type L zeolite with an inorganic binder selected from the group consisting of silica, alumina, and aluminosilicates; (j) extruding said mixture through a die to form cylindrical pellets; and (k) drying and calcining said pellets. 7. A method of forming a zeolitic catalyst comprising: (a) mixing a potassium-type L zeolite with an inorganic binder selected from the group consisting of silica, alumina, and aluminosilicates; (b) extruding said mixture through a die to form cylindrical pellets; (c) drying and calcining said pellets; (d) contacting said calcined pellets with a barium nitrate solution at a temperature of from 25° C. to 100° C., at a pH of from 8 to 11, over a period of time of from 20 minutes to 4 hours; (e) drying said contacted pellets at a temperature of from 70° C. to 130° C.; (f) calcining said dried barium-type L zeolite-inorganic oxide pellets at a temperature of from 550° C. to 650° C.; (g) contacting said calcined barium-type L zeolite-inorganic oxide pellets with said barium nitrate solution at a temperature of from 25° C. to 100° C., at a pH of from 8 to 11, over a period of time of from 20 minutes to 4 hours; (h) drying and calcining said doubly contacted pellets; (i) impregnating said doubly contacted pellets with platinum using tetrammineplatinum (II) nitrate; (j) drying and calcining said impregnated pellets; and (k) reducing said calcined platinum-barium-type L zeolite-inorganic oxide pellets in hydrogen at 480° C. to 500° C. 8. A method of forming a zeolitic catalyst comprising: (a) contacting a potassium-type L zeolite with a barium nitrate solution at a temperature of from 25° C. to 100° C., at a pH of from 8 to 11, over a period of time of from 20 minutes to 4 hours; (b) drying said contacted type L zeolite at a temperature of from 70° C. to 130° C.; (c) calcining said dried type L zeolite at a temperature of from 550° C. to 650° C.; (d) contacting said calcined type L zeolite with said barium nitrate solution at a temperature of from 25° C. to 100° C., at a pH of from 8 to 11, over a period of time of from 20 minutes to 4 hours; (e) drying and calcining said doubly contacted type L zeolite; (f) mixing said doubly contacted type L zeolite with an inorganic binder selected from the group consisting of silica, alumina, and aluminosilicates; (g) extruding said mixture through a die to form cylindrical pellets; and (h) drying and calcining said pellets; (i) impregnating said calcined pellets with platinum using tetrammineplatinum (II) nitrate; (j) drying and calcining said impregnated pellets; (k) reducing said calcined platinum-barium-type L zeolite-inorganic oxide pellets in hydrogen at 480° C. to 500° C.

이 특허에 인용된 특허 (1) 인용/피인용 타임라인 분석

Buss Waldeen C. (Kensington CA) Hughes Thomas R. (Orinda CA), Method of dehydrocyclizing alkanes.
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Khare, Gyanesh P., Aromatization catalysts with high surface area and pore volume.
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Blessing, Christopher D.; Brown, Scott H.; Cheung, Tin-Tack Peter; Glova, David J.; Hasenberg, Daniel M.; Holtermann, Dennis L.; Khare, Gyanesh P.; Knorr, Jr., Daniel B., Method of enhancing an aromatization catalyst.
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Wu, An-Hsiang, Methods of regenerating aromatization catalysts.
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[미국특허] Method of adding an alkaline earth metal to a zeolitic catalyst 원문보기

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