EP0117944A2
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EP
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Methanol synthesis and catalyst therefor
Assignee: Imperial Chemical Industries Ltd
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Filing: 1983-11-23
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Granted: —
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Expires: 2003-11-23
Abstract
Abstract Methanol synthesis over a catalyst derived from an alloy of copper and/or a platinum group metal and a highly oxidisable metal such as a rare earth metal can be carried out at unusually low temperatures such as 70 DEG C and using synthesis gas deficient in hydroben. The process life of the catalyst is longer if the starting alloy contains a further metal such as aluminium or manganese. The synthesis gas should preferably be very pure and substantially free of carbon dioxide and water vapour. The process can be advantageously carried out using the catalyst suspended in an inert liquid.
Inventors
- 👤 Glyn David Short
- 👤 James Robert Jennings
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 23:20
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/83; B01J23/38; B01J23/54; B01J23/56; B01J23/63; B01J23/89; B01J23/8933; B01J23/894; C; C07; C07C; C07C29/00; C07C29/15; C07C29/151; C07C29/153; C07C29/156; C07C29/157; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
46 words
A process of methanol synthesis by reacting carbon monoxide with hydrogen over a catalyst comprising at least one active metal and/or oxide and a difficultly reducible oxidic support material made by oxidation of at least one element, characterised by a catalyst temperature under 240 0 C.
Claim 2
Dependent Claim
46 words
A process of methanol synthesis by reacting carbon monoxide with hydrogen over a catalyst comprising at least one active metal and/or oxide and a difficultly reducible oxidic support material made by oxidation of at least one element, characterised by a catalyst temperature under 240 0 C.
Claim 3
Dependent Claim
52 words
A process of methanol synthesis by reacting carbon monoxide with hydrogen over a catalyst comprising at least one active metal and/or oxide and a difficultly reducible oxidic support material made by oxidation of at least one element, characterised in that the composition of the gas mixture passed over the catalyst corresponds to
Claim 4
Dependent Claim
52 words
A process of methanol synthesis by reacting carbon monoxide with hydrogen over a catalyst comprising at least one active metal and/or oxide and a difficultly reducible oxidic support material made by oxidation of at least one element, characterised in that the composition of the gas mixture passed over the catalyst corresponds to
Claim 7
Dependent Claim
55 words
A-process of methanol synthesis by reacting carbon monoxide with hydrogen over a catalyst comprising at least one active metal and/or oxide and a difficutly reducible oxidic support material made by oxidation of at least one element, characterised in that the catalyst is contained in a body of liquid substantially inert in the conditions of synthesis.
Claim 8
Dependent Claim
55 words
A-process of methanol synthesis by reacting carbon monoxide with hydrogen over a catalyst comprising at least one active metal and/or oxide and a difficutly reducible oxidic support material made by oxidation of at least one element, characterised in that the catalyst is contained in a body of liquid substantially inert in the conditions of synthesis.
Claim 9
Dependent Claim
22 words
A process according to anyone of the preceding claims in which the temperature is in the range 140 - 180 0 C.
Claim 10
Dependent Claim
22 words
A process according to any one of claims 1 to 3 in which the temperature is in the range 50 - 120°C.
Claim 11
Dependent Claim
41 words
A process according to any one of the preceding claims in which the element from which the support material is derived is a metal having a standard electrode potential at least 1.8 volts negative with respect to the standard hydrogen electrode.
Claim 12
Dependent Claim
29 words
A process according to claim 6 in which the catalyst is derived from a composition comprising an activatable metal, at least one rare earth metal and aluminium and/or manganese.
Claim 13
Dependent Claim
33 words
A process according to any one of the preceding claims in which the gas passed over the catalyst contains carbon dioxide and steam to the extent of less than 0.1 bar in total.
Claim 14
Dependent Claim
24 words
A process according to any one of the preceding claims in which the oxidation is carried out by means of the methanol synthesis gas.
Claim 15
Dependent Claim
40 words
A process according to any one of claims 1 to 8 in which the oxidation is carried out by means of a reactive medium of oxidising power less than half that of air at a temperature not over 200 C.
Claim 16
Dependent Claim
52 words
A process according to any one of the preceding claims in which the catalyst comprises the oxidation product of a metal capable of forming an unstable hydride and has been made from an alloy of such a metal with a metal active or activatable for methanol synthesis by hydriding followed by oxidation.
Claim 17
Dependent Claim
62 words
A process according to any one of the preceding claims in which the gas contacting the catalyst contains less than 1 part . in 10 by weight of volatile metal compounds, less than 1 part in 10 by volume as equivalent HCl of halogen and less than 100 parts in 10 9 by volume as equivalent H 2 S of sulphur compounds.
Claim 18
Dependent Claim
45 words
An alloy convertible to a methanol synthesis catalyst by oxidation and comprising copper, at least one metal having an electrode potential above 1.8 volt negative to the standard hydrogen electrode and at least one metal having such a potential in the range 0.8 to 1.8.
Claim 19
Dependent Claim
45 words
An alloy convertible to a methanol synthesis catalyst by oxidation and comprising copper, at least one metal having an electrode potential above 1.8 volt negative to the standard hydrogen electrode and at least one metal having such a potential in the range 0.8 to 1.8.
Claim 20
Dependent Claim
58 words
A hydrided alloy convertible to a methanol synthesis catalyst by oxidation and having the composition where M is copper and/or at least one platinum group metal T is selected from rare earth metals, yttrium, titanium, zirconium, hafnium and thorium x = y = 1 when M is copper, y = 20x when M is a platinum group metal.
Claim 21
Dependent Claim
58 words
A hydrided alloy convertible to a methanol synthesis catalyst by oxidation and having the composition where M is copper and/or at least one platinum group metal T is selected from rare earth metals, yttrium, titanium, zirconium, hafnium and thorium x = y = 1 when M is copper, y = 20x when M is a platinum group metal.
Claim 22
Dependent Claim
29 words
An alloy comprising a platinum group metal having methanol synthesis activity, optionally copper, and at least one rare earth metal, and a methanol synthesis catalyst derived therefrom by oxidation.
Claim 23
Dependent Claim
29 words
An alloy comprising a platinum group metal having methanol synthesis activity, optionally copper, and at least one rare earth metal, and a methanol synthesis catalyst derived therefrom by oxidation.
References Cited (Backward Citations)
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