US4042615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon synthesis from CO and H2 using Ni supported on a titanium oxide
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1976-04-05
•
Granted: 1977-08-16
•
Expires: 1996-04-05
Abstract
Abstract Nickel supported on TiO2, other titanium-containing oxides or mixtures of various titanium oxides results in a catalyst system which exhibits superior hydrocarbon synthesis characteristics. Such supported nickel catalysts exhibit selectivity to paraffinic hydrocarbon products of from C2 to C7 which are free of olefins and oxygenated products. They generate CO conversions of up to 60% at pressures of 3090 kPa without significant change in product distribution. A large fraction of the product obtained contains 2 or more carbon atoms in the chain up to conversions of 60%. The supported nickel catalysts exhibit enhanced activity, improved selectivity to higher molecular weight normal paraffins, improved longevity and tolerance to sulfur and resistance to nickel carbonyl formation as compared to nickel catalysts on other supports such as Al2O3, silica or carbon.
Inventors
- 👤 M. Albert Vannice
- 👤 Robert L. Garten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:42
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/0425; C07C1/043; C07C1/0435; B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/46; B01J23/70; B01J23/74; B01J23/755; C07C2521/00; C07C2521/02; C07C2521/04; C07C2521/06; C07C2521/18; C07C2523/00; C07C2523/02; C07C2523/04; C07C2523/10; C07C2523/38; C07C2523/40; C07C2523/46; C07C2523/70; C07C2523/74; C07C2523/755; C07C2523/89
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
146 words
A process for the synthesis of higher molecular weight paraffins comprising the steps of passing CO and H 2 in a CO/H 2 ratio of 10 to 0.1 over a catalyst comprising nickel on a titanium-containing oxide support, wherein said titanium-containing oxide support is selected from the group consisting of TiO 2 ZrTiO 4 , TiO 2 -carbon, TiO 2 -- Al 2 O 3 , TiO 2 -- SiO 2 alkaline earth titanates, alkali titanates, rare earth titanates and mixtures thereof, at a space velocity of from 100 to 50,000 V/V/Hr. and a temperature of from 100° to 500° C. and at pressures of from 103 to 1.03 × 10 5 kPa for a time sufficient to effect the generation of the desired paraffinic products in the desired ratio, wherein the concentration of said nickel in said catalyst is from 0.01 to 75% by weight.
Claim 2
Dependent Claim
146 words
A process for the synthesis of higher molecular weight paraffins comprising the steps of passing CO and H 2 in a CO/H 2 ratio of 10 to 0.1 over a catalyst comprising nickel on a titanium-containing oxide support, wherein said titanium-containing oxide support is selected from the group consisting of TiO 2 ZrTiO 4 , TiO 2 -carbon, TiO 2 -- Al 2 O 3 , TiO 2 -- SiO 2 alkaline earth titanates, alkali titanates, rare earth titanates and mixtures thereof, at a space velocity of from 100 to 50,000 V/V/Hr. and a temperature of from 100° to 500° C. and at pressures of from 103 to 1.03 × 10 5 kPa for a time sufficient to effect the generation of the desired paraffinic products in the desired ratio, wherein the concentration of said nickel in said catalyst is from 0.01 to 75% by weight.
Claim 3
Dependent Claim
13 words
The process of claim 1 wherein the titanium-containing oxide is TiO 2 .
Claim 4
Dependent Claim
22 words
The process of claim 2 wherein the TiO 2 has a surface area of from 25-100 m 2 g - 1 .
Claim 5
Dependent Claim
27 words
The process of claim 2 wherein the nickel-on-titanium oxide catalyst has a weight loading of nickel of from 0.1 to 10 wt. % based on total catalyst.
Claim 6
Dependent Claim
23 words
The process of claim 2 wherein the nickel-on-titanium oxide catalyst has a nickel crystallite size of from 1 to 10 nm (100 A).
Claim 7
Dependent Claim
31 words
The process of claim 2 wherein the CO/H 2 ratio is 4.0 to 0.5, the temperature is from 150° to 400° C and the pressure is from 103 to 3090 kPa.
Claim 8
Dependent Claim
31 words
The process of claim 2 wherein the CO/H 2 ratio is 3 to 1, the temperature is from 150° to 300° C and the pressure is from 103 to 2060 kPa.
Claim 9
Dependent Claim
16 words
The process of claim 2 wherein the nickel concentration is from 1.5 to 10% by weight.
Claim 10
Dependent Claim
27 words
The process of claim 2 wherein the catalyst consisting of nickel supported on TiO 2 has a nickel particle crystallite size of from 1 to 30 nm.
Claim 11
Dependent Claim
27 words
The process of claim 2 wherein the catalyst consisting of nickel supported on TiO 2 has a nickel particle crystallite size of from 1 to 7.5 nm.
Claim 12
Dependent Claim
24 words
The process of claim 2 wherein the TiO 2 has a surface area of from 1 to 200 m 2 g - 1 .
Claim 13
Dependent Claim
24 words
The process of claim 2 wherein the TiO 2 has a surface area of from 10 to 100 m 2 g - 1 .
Claim 14
Dependent Claim
24 words
The process of claim 1 wherein the titanium-containing oxide has a surface area of from 1 to 200 m 2 g - 1 .
Claim 15
Dependent Claim
16 words
The process of claim 1 wherein the nickel concentration is from 1.5 to 10 wt. %.
Claim 16
Dependent Claim
26 words
The process of claim 1 wherein the catalyst consisting of nickel supported on a titanium-containing oxide has a nickel particle crystallite size of from 1-30 nm.
Claim 17
Dependent Claim
28 words
The process of claim 1 wherein the catalyst consisting of nickel supported on a titanium-containing oxide has a nickel particle crystallite size of from 1 to 10 nm.
Claim 18
Dependent Claim
31 words
The process of claim 1 wherein the CO/H 2 ratio is 4.0 to 0.5, the temperature is from 150° to 400° C. and the pressure is from 103 to 3090 kPa.
Claim 19
Dependent Claim
31 words
The process of claim 1 wherein the CO/H 2 ratio is 3 to 1, the temperature is from 150° to 300° C. and the pressure is from 103 to 2060 kPa.
Claim 20
Dependent Claim
28 words
The process of claim 1 wherein the catalyst consisting of nickel supported on a titanium-containing oxide has a nickel particle crystallite size of from 1 to 7.5 nm.
Claim 21
Dependent Claim
25 words
The process of claim 1 wherein the titanium-containing oxide support has a surface area of from 10 to 100 m 2 g - 1 .
Claim 22
Dependent Claim
25 words
The process of claim 1 wherein the titanium-containing oxide support has a surface area of from 25 to 100 m 2 g - 1 .
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) | 1980-08-15 | 1981-02-14 | 1981-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-15 | 1985-02-14 | 1985-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-15 | 1989-02-14 | 1989-08-16 | $7700.00 | Window Closed / Lapsed |