US4036738A
Expired / Lapsed
US
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Hydrocracking in strong acid systems with palladium or iridium
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1975-05-14
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Granted: 1977-07-19
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Expires: 1995-05-14
Abstract
Abstract Hydrocarbon feedstocks are hydrocracked by contacting the feedstock in the presence of hydrogen and under hydrocracking reaction conditions with a catalyst comprised of a metal fluoride, the metal being tantalum, niobium, boron or mixtures thereof, a fluoride containing Bronsted acid and palladium or iridium, the Bronsted acid being present in at least an equimolar amount relative to the metal fluoride and sufficient to dissolve at least a portion of the metal fluoride. The presence of palladium or iridium serves to extend the hydrocracking catalyst life of the metal fluoride and fluoride containing Bronsted acid. The catalyst can be described as a slurry or dispersion composed of the noble metal on a support in a liquid phase acid system.
Inventors
- 👤 Jos Wristers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:26
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J31/00; B01J31/02; B01J31/0215; B01J31/0225; B01J31/0227; B01J31/04; B01J31/16; B01J31/1616; B01J31/26; B01J31/36; C; C07; C07C; C07C4/00; C07C4/02; C07C4/06; C10; C10G; C10G47/00; C10G47/02; C10G47/10; C10G47/12; C10G47/14; B01J2231/00; B01J2231/60; B01J2231/64; B01J2231/641; C07C2523/00; C07C2523/38; C07C2523/40; C07C2523/44; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1206; C07C2527/133; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
144 words
A hydrocracking process which comprises contacting a hydrocarbon feedstock which has an initial boiling point of at least about 215° C. with hydrogen, under hydrocracking conditions, and with a substantially liquid phase acid catalyst comprised of: a. a metal fluoride wherein the metal is selected from the group consisting of tantalum, niobium, boron and mixtures thereof; b. an acid selected from the group consisting of hydrofluoric acid, C 1 -C 4 trifluoroalkylsulfonic acid, and trifluoroacetic acid; and c. a supported palladium or iridium hydrogenation component; the acid being present in at least an equimolar ratio relative to the metal fluoride and at least a portion of the metal fluoride is dissolved in the acid, the supported palladium or iridium being dispersed in the liquid acid phase and recovering a hydrocarbon product having an average molecular weight lower than the molecular weight of the feedstock.
Claim 2
Dependent Claim
144 words
A hydrocracking process which comprises contacting a hydrocarbon feedstock which has an initial boiling point of at least about 215° C. with hydrogen, under hydrocracking conditions, and with a substantially liquid phase acid catalyst comprised of: a. a metal fluoride wherein the metal is selected from the group consisting of tantalum, niobium, boron and mixtures thereof; b. an acid selected from the group consisting of hydrofluoric acid, C 1 -C 4 trifluoroalkylsulfonic acid, and trifluoroacetic acid; and c. a supported palladium or iridium hydrogenation component; the acid being present in at least an equimolar ratio relative to the metal fluoride and at least a portion of the metal fluoride is dissolved in the acid, the supported palladium or iridium being dispersed in the liquid acid phase and recovering a hydrocarbon product having an average molecular weight lower than the molecular weight of the feedstock.
Claim 3
Dependent Claim
19 words
The process of claim 1 wherein the hydrocracking process is carried out at temperature ranging from about 20°-300° C.
Claim 4
Dependent Claim
30 words
The process of claim 2 wherein the metal of the metal fluoride is selected from the group consisting of tantalum, niobium and mixtures thereof and the acid is hydrofluoric acid.
Claim 5
Dependent Claim
18 words
The process of claim 3 wherein the mole ratio of acid to metal fluoride is at least 2:1.
Claim 6
Dependent Claim
20 words
The process of claim 1 wherein the moles of hydrogen per mole of hydrocarbon feedstock ranges from 0.01 to 5.0.
Claim 7
Dependent Claim
17 words
The process of claim 2 wherein the hydrogen partial pressure ranges from about 25 to 3000 psig.
Claim 8
Dependent Claim
24 words
The process of claim 2 wherein at least 0.0001 wt. %, based on acid, of the metal hydrogenation component is present on the support.
Claim 9
Dependent Claim
129 words
A hydrocracking process which comprises contacting a hydrocarbon feedstock having an initial boiling point of at least about 215° C. with hydrogen, at temperatures ranging from about 20°-300° C., and with a substantially liquid phase acid catalyst comprised of: a. a metal fluoride selected from the group consisting of tantalum pentafluoride, niobium pentafluoride and mixtures thereof; b. hydrofluoric acid; and c. a supported palladium or iridium hydrogenation component; the acid being present in a molar ratio of at least 2:1 based on metal fluoride and at least a portion of the metal fluoride is dissolved in the acid, the supported palladium or iridium being dispersed in the liquid acid phase and recovering a hydrocarbon product having an average molecular weight lower than the average molecular weight of the feedstock.
Claim 10
Dependent Claim
129 words
A hydrocracking process which comprises contacting a hydrocarbon feedstock having an initial boiling point of at least about 215° C. with hydrogen, at temperatures ranging from about 20°-300° C., and with a substantially liquid phase acid catalyst comprised of: a. a metal fluoride selected from the group consisting of tantalum pentafluoride, niobium pentafluoride and mixtures thereof; b. hydrofluoric acid; and c. a supported palladium or iridium hydrogenation component; the acid being present in a molar ratio of at least 2:1 based on metal fluoride and at least a portion of the metal fluoride is dissolved in the acid, the supported palladium or iridium being dispersed in the liquid acid phase and recovering a hydrocarbon product having an average molecular weight lower than the average molecular weight of the feedstock.
Claim 11
Dependent Claim
21 words
The process of claim 8 wherein the feedstock is selected from the group consisting of cycle stocks, residua and mixtures thereof.
Claim 12
Dependent Claim
28 words
The process of claim 8 wherein the hydrocracking process is carried out at temperatures ranging from about 50°-160° C. and hydrogen partial pressures ranging from about 25-3000 psig.
Claim 13
Dependent Claim
13 words
The process of claim 9 wherein the hydrogenation component is palladium on carbon.
Claim 14
Dependent Claim
19 words
The process of claim 9 wherein the feedstock is a residuum and the hydrogenation component is a supported iridium.
Claim 15
Dependent Claim
20 words
The process of claim 8 wherein the moles of hydrogen per mole of hydrocarbon feedstock ranges from 0.01 to 5.0.
Claim 16
Dependent Claim
23 words
The process of claim 8 wherein at least 0.0001 wt. %, based on acid, of the hydrogenation component is present on the support.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-18 | 1981-01-17 | 1981-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-18 | 1985-01-17 | 1985-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-18 | 1989-01-17 | 1989-07-19 | $7700.00 | Window Closed / Lapsed |