EP0169743A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Syngas conversion catalyst production and use thereof
Assignee: BP PLC
•
Filing: 1985-07-25
•
Granted: —
•
Expires: 2005-07-25
Abstract
Abstract A composition for use after reductive activation as a catalyst for the conversion of synthesis gas to hydrocarbons having a carbon number greater than one, which composition has the formula: wherein A is an alkali metal, x is a number such that the valence requirements of the other elements for oxygen is satisfied, a is greater than zero and less than 1%w/w, based on the total weight of the composition, b is in the range from zero to 10% w/w, based on the total weight of the composition, and CE and O constitute the remainder of the composition, is produced by the process comprising the steps of: (A) bringing together in solution soluble salts of the metals ruthenium and cerium and a precipitant comprising a carbonate and or bicarbonate and/or a hydroxide of an alkali metal or ammonium under conditions whereby there is formed a precipitate comprising rythenium and cerium in the form of compounds thermally decomposable to their oxides, and (B) recovering the precipitate obtained in step (A). Also a process for the conversion of synthesis gas using the catalyst produced as aforesaid, optionally in combination with a zeolite.
Inventors
- 👤 Leonard Cotton
- 👤 Barry Nay
- 👤 Michael John Wilcox
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 14:59
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/58; B01J23/63; B01J37/00; B01J37/04; C; C07; C07C; C07C1/00; C07C1/02; C07C1/04; C07C1/0425; C07C1/043; C07C1/0435; C07C1/0445; C07C2523/00; C07C2523/02; C07C2523/10; C07C2523/38; C07C2523/40; C07C2523/46; C07C2523/54; C07C2523/56; C07C2523/58; C07C2523/63
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
174 words
1 A process for the production of a composition for use after reductive activation as a catalyst in the conversion of synthesis gas to hydrocarbons of carbon number greater than one, which . composition has the formula: wherein A is an alkali metal, x is a number such that the valence requirements of the other elements for oxygen is satisifed, a is greater than zero and less than 1% w/w, based on the total weight of the composition, b is in the range from zero to 10% w/w, based on the total weight of the composition, and Ce and 0 constitute the remainder of the composition, which process comprises the steps of: (A) bringing together in solution soluble salts of the metals ruthenium and cerium and a precipitant comprising a carbonate and/or a bicarbonate and/or a hydroxide of an alkali metal or ammonium under conditions whereby there is formed a precipitate comprising ruthenium and cerium in the form of compounds thermally decomposable to their oxides, and (B) recovering the precipitate obtained in step (A).
Claim 2
Dependent Claim
174 words
1 A process for the production of a composition for use after reductive activation as a catalyst in the conversion of synthesis gas to hydrocarbons of carbon number greater than one, which . composition has the formula: wherein A is an alkali metal, x is a number such that the valence requirements of the other elements for oxygen is satisifed, a is greater than zero and less than 1% w/w, based on the total weight of the composition, b is in the range from zero to 10% w/w, based on the total weight of the composition, and Ce and 0 constitute the remainder of the composition, which process comprises the steps of: (A) bringing together in solution soluble salts of the metals ruthenium and cerium and a precipitant comprising a carbonate and/or a bicarbonate and/or a hydroxide of an alkali metal or ammonium under conditions whereby there is formed a precipitate comprising ruthenium and cerium in the form of compounds thermally decomposable to their oxides, and (B) recovering the precipitate obtained in step (A).
Claim 3
Dependent Claim
21 words
2 A process according to claim 1 wherein the ruthenium content (a in the formula I) is less than 0.5% w/w.
Claim 4
Dependent Claim
28 words
3 A process according to either claim 1 or claim 2 wherein the amount (b) of alkali metal (A) is greater than zero and up to 5% w/w.
Claim 5
Dependent Claim
14 words
4 A process according to claim 3 wherein the alkali metal (A) is potassium.
Claim 6
Dependent Claim
24 words
5 A process according to any one of the preceding claims wherein the salts of ruthenium and cerium are brought together in aqueous solution.
Claim 7
Dependent Claim
30 words
6 A process according to any one of the preceding claims wherein the salts of ruthenium and cerium are brought together at a temperature in the range 0 to 100°C.
Claim 8
Dependent Claim
18 words
7 A process according to claim 6 wherein the temperature is in the range from 80 to 100°C.
Claim 9
Dependent Claim
13 words
8 A process according to claim 6 wherein the temperature is below 30°C.
Claim 10
Dependent Claim
26 words
9 A process according to any one of the preceding claims wherein in step (A) the final pH is in the range from 6 to 10.
Claim 11
Dependent Claim
45 words
10 A process according to any one of the preceding claims wherein thermally decomposable compounds comprised in the precipitate recovered in step (B) are thermally decomposed in a discrete step (C) comprising heating the precipitate at a temperature in the range from 250 to 600°C.
Claim 12
Dependent Claim
19 words
11 A process according to claim 10 wherein the precipitate is heated in a stream of nitrogen or air.
Claim 13
Dependent Claim
29 words
12 A process according to any one of the preceding claims wherein the composition of formula (I) is reductively activated by contact at elevated temperature with a reducing gas.
Claim 14
Dependent Claim
13 words
13 A process according to claim 12 wherein the reducing gas comprises hydrogen.
Claim 15
Dependent Claim
45 words
14 A process according to either claim 12 or claim 13 wherein reductive activation is effected at a pressure in the range from 1 to 100 bar and a temperature in the range from 150 to 350°C for a period of up to 24 hours.
Claim 16
Dependent Claim
53 words
15 A process for the production of hydrocarbons having a carbon number greater than one from synthesis gas which process comprises contacting synthesis gas with a reductively activated composition of formula (I) at a temperature in the range from 190 to 400°C and a pressure in the range from 0 to 100 bar.
Claim 17
Dependent Claim
53 words
15 A process for the production of hydrocarbons having a carbon number greater than one from synthesis gas which process comprises contacting synthesis gas with a reductively activated composition of formula (I) at a temperature in the range from 190 to 400°C and a pressure in the range from 0 to 100 bar.
Claim 18
Dependent Claim
30 words
16 A process according to claim 15 wherein the temperature is in the range from 250 to 350°C and the pressure is in the range from 10 to 50 bars.
Claim 19
Dependent Claim
25 words
17 A process according to either claim 15 or claim 16 wherein a zeolite is combined with the composition either before or after reductive activation.
Claim 20
Dependent Claim
14 words
18 A process according to claims 17 wherein the zeolite is of the MFI-type.
Claim 21
Dependent Claim
19 words
19 A process according to either claim 17 or claim 18 wherein the zeolite is in the hydrogen form.
Claim 22
Dependent Claim
19 words
20 A process according to any one of claims 17 to 19 wherein the catalyst composition is alkali metal-free.
Claim 23
Dependent Claim
43 words
21 A process according to any one of claims 17 to 20 wherein the ratio of the number of parts by volume of catalyst composition to the number of parts by volume of the zeolite is in the range from 5:1 to 1:5.
References Cited (Backward Citations)
FR2194482A1
Cited
GB2119277A
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.