Highly stable hydrocarbon-soluble molybdenum catalyst precursors and methods for making same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01J-027/051
B01J-031/04
B01J-023/28
C10G-047/06
C10G-047/26
B01J-031/22
B01J-031/00
C10G-049/00
C10G-047/04
출원번호
US-0787377
(2013-03-06)
등록번호
US-9403153
(2016-08-02)
발명자
/ 주소
Qiu, He
Zhou, Bing
출원인 / 주소
HEADWATERS HEAVY OIL, LLC
대리인 / 주소
Workman Nydegger
인용정보
피인용 횟수 :
0인용 특허 :
89
초록▼
Hydrocarbon-soluble molybdenum catalyst precursors include a plurality of molybdenum cations and a plurality of carboxylate anions having at least 8 carbon atoms. The carboxylate anions are alicyclic, aromatic, or branched, unsaturated and aliphatic, and can derived from carboxylic acids selected fr
Hydrocarbon-soluble molybdenum catalyst precursors include a plurality of molybdenum cations and a plurality of carboxylate anions having at least 8 carbon atoms. The carboxylate anions are alicyclic, aromatic, or branched, unsaturated and aliphatic, and can derived from carboxylic acids selected from 3-cyclopentylpropionic acid, cyclohexanebutyric acid, biphenyl-2-carboxylic acid, 4-heptylbenzoic acid, 5-phenylvaleric acid, geranic acid, 10-undecenoic acid, dodecanoic acid, and combinations thereof. The molybdenum salts have decomposition temperatures higher than 210° C. The catalyst precursors can form a hydroprocessing molybdenum sulfide catalyst in heavy oil feedstocks. Also disclosed are methods for making catalyst precursors and hydrocracking heavy oil using active catalysts.
대표청구항▼
1. A molybdenum catalyst precursor composition comprising: a molybdenum catalyst precursor composed of: a plurality of molybdenum atoms; anda plurality of carboxylate anions coordinated with each molybdenum atom and selected from the group consisting of: (a) aromatic carboxylate anions with one or t
1. A molybdenum catalyst precursor composition comprising: a molybdenum catalyst precursor composed of: a plurality of molybdenum atoms; anda plurality of carboxylate anions coordinated with each molybdenum atom and selected from the group consisting of: (a) aromatic carboxylate anions with one or two unfused aromatic rings and a total of 11 to 15 carbon atoms, (b) alicyclic carboxylate anions with a single aliphatic ring, an aliphatic side chain, and a total of 8 to 17 carbon atoms, (c) saturated aliphatic carboxylate anions with 11 to 15 carbon atoms, (d) unsaturated aliphatic carboxylate anions with 8 to 17 carbon atoms, and mixtures thereof;with the proviso that the plurality of molybdenum atoms in the molybdenum catalyst precursor have an average oxidation state in a range of 4+ to 6+ and the molybdenum catalyst precursor is soluble in heavy oil, has a first decomposition temperature of at least 210° C. and has a peak decomposition temperature of at least 250° C. 2. A molybdenum catalyst precursor composition as in claim 1, wherein the plurality of carboxylate anions are provided by at least one carboxylic acid selected from the group consisting of 3-cyclopentylpropionic acid, cyclohexanebutyric acid, biphenyl-2-carboxylic acid, 4-heptylbenzoic acid, 5-phenylvaleric acid, and geranic acid. 3. A molybdenum catalyst precursor composition as in claim 1, wherein the plurality of carboxylate anions are provided by 10-undecenoic acid. 4. A molybdenum catalyst precursor composition as in claim 1, wherein the molybdenum catalyst precursor has a hydrocarbon solvent solubility of at least 1 mol % at 100° C. and 1 atm. 5. A molybdenum catalyst precursor composition as in claim 1, wherein the molybdenum catalyst precursor has a hydrocarbon solvent solubility of at least 5 mol % at 100° C. and 1 atm. 6. A molybdenum catalyst precursor composition as in claim 1, further comprising a hydrocarbon solvent into which the molybdenum catalyst precursor is dissolved, wherein the hydrocarbon solvent is selected from the group consisting of heavy oil, heavy crude oil, vacuum gas oil, decant oil, light gas oil, cycle oil, and combinations thereof. 7. A molybdenum catalyst precursor composition as in claim 1, further comprising one or more additional transition metal cations other than molybdenum bonded to a portion of the carboxylate anions. 8. A molybdenum catalyst precursor composition as in claim 1, the carboxylate anions comprising alicyclic carboxylate anions with a single aliphatic ring, an aliphatic side chain, and a total of 8 to 17 carbon atoms. 9. A molybdenum catalyst precursor composition as in claim 1, the carboxylate anions comprising aromatic carboxylate anions with one or two unfused aromatic rings and a total of 11 to 15 carbon atoms. 10. A molybdenum catalyst precursor composition as in claim 1, the carboxylate anions having at least one functional group that provides steric hindrance for the molybdenum atoms. 11. A molybdenum catalyst precursor composition as in claim 1, wherein the molybdenum catalyst precursor has a first decomposition temperature of at least about 230° C. and a peak decomposition temperature of at least about 270° C. 12. A molybdenum catalyst precursor composition as in claim 1, wherein the molybdenum catalyst precursor has a first decomposition temperature of at least about 250° C. and a peak decomposition temperature of at least about 290° C. 13. A molybdenum catalyst precursor composition as in claim 1, wherein the plurality of carboxylate anions are provided by dodecanoic acid. 14. A molybdenum catalyst precursor composition as in claim 1, the carboxylate anions comprising unsaturated aliphatic carboxylate anions with 8 to 17 carbon atoms. 15. A molybdenum catalyst precursor composition comprising: a molybdenum catalyst precursor composed of: a plurality of molybdenum atoms; anda plurality of carboxylate anions coordinated with each molybdenum atom, wherein the carboxylate anions are provided by at least one carboxylic acid selected from the group consisting of 3-cyclopentylpropionic acid, cyclohexanebutyric acid, biphenyl-2-carboxylic acid, 4-heptylbenzoic acid, 5-phenylvaleric acid, geranic acid, 10-undecenoic acid, dodecanoic acid, and combinations thereof,with the proviso that the plurality of molybdenum atoms in the molybdenum catalyst precursor have an average oxidation state in a range of 4+ to 6+ and the molybdenum catalyst precursor is soluble in heavy oil, has a first decomposition temperature of at least 210° C. and has a peak decomposition temperature of at least 250° C. 16. A method of hydroprocessing a heavy oil feedstock, comprising: providing a heavy oil feedstock comprised of a substantial quantity of hydrocarbons having a boiling point greater than about 343° C.;blending a molybdenum catalyst precursor as in claim 15 within the heavy oil feedstock at a temperature below which a significant portion of the catalyst precursor composition starts to decompose to form a conditioned feedstock;heating the conditioned feedstock to a temperature above a decomposition temperature of the molybdenum catalyst precursor in order to decompose the molybdenum catalyst precursor and form an in situ colloidally-dispersed catalyst within the heavy oil feedstock;reacting the heavy oil feedstock and in situ colloidally-dispersed catalyst with hydrogen under hydrocracking conditions within a hydrocracking reactor to yield an upgraded oil fraction. 17. A method as defined in claim 16, wherein the heavy oil feedstock comprises at least one of heavy crude oil, oil sand bitumen, atmospheric tower bottoms, vacuum tower bottoms, resid, visbreaker bottoms, coal tar, heavy oil from oil shale, or liquefied coal. 18. A method as defined in claim 16, further comprising mixing the catalyst precursor with a hydrocarbon oil diluent to form a diluted catalyst precursor mixture before mixing the catalyst precursor with the heavy oil feedstock. 19. A method as defined in claim 18, wherein the hydrocarbon oil diluent comprises at least one of vacuum gas oil, decant oil, light gas oil, or cycle oil. 20. A method as defined in claim 18, wherein the catalyst precursor is mixed with the hydrocarbon oil diluent for a period of time in a range of about 0.001 second to about 20 minutes. 21. A method as defined in claim 18, wherein the diluted catalyst precursor mixture is mixed with the heavy oil for a period of time in a range of about 0.001 second to about 20 minutes. 22. A method of making a molybdenum catalyst precursor composition for hydrocracking heavy oil, comprising: providing a plurality of molybdenum atoms;providing a plurality of carboxylate anions selected from the group consisting of: (a) aromatic carboxylate anions with one or two unfused aromatic rings and a total of 11 to 15 carbon atoms, (b) alicyclic carboxylate anions with a single aliphatic ring, an aliphatic side chain, and a total of 8 to 17 carbon atoms, (c) saturated aliphatic carboxylate anions with 11 to 15 carbon atoms, (d) unsaturated aliphatic carboxylate anions with 8 to 17 carbon atoms, and mixtures thereof; andreacting the plurality of molybdenum atoms with the plurality of carboxylate anions in the presence of a reducing agent to yield a molybdenum catalyst precursor comprised of a molybdenum salt,with the proviso that the molybdenum atoms within the molybdenum salt have an average oxidation state in a range of 4+ to 6+ and the molybdenum catalyst precursor is soluble in heavy oil, has a first decomposition temperature of at least 210° C. and has a peak decomposition temperature of at least 250° C. 23. A method of making a molybdenum catalyst precursor composition for hydrocracking heavy oil, comprising: providing a plurality of molybdenum atoms;providing a plurality of carboxylate anions provided by at least one carboxylic acid selected from the group consisting of 3-cyclopentylpropionic acid, cyclohexanebutyric acid, biphenyl-2-carboxylic acid, 4-heptylbenzoic acid, 5-phenylvaleric acid, geranic acid, 10-undecenoic acid, dodecanoic acid, and combinations thereof; andreacting the plurality of molybdenum atoms with the plurality of carboxylate anions in the presence of a reducing agent to yield a molybdenum catalyst precursor comprised of a molybdenum salt,with the proviso that the molybdenum atoms within the molybdenum salt have an average oxidation state in a range of 4+ to 6+ and the molybdenum catalyst precursor is soluble in heavy oil, has a first decomposition temperature of at least 210° C. and has a peak decomposition temperature of at least 250° C.
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이 특허에 인용된 특허 (89)
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