GB843717A - Improvements in and relating to dehydrogenation - Google Patents
Improvements in and relating to dehydrogenationInfo
- Publication number
- GB843717A GB843717A GB5646/58A GB564658A GB843717A GB 843717 A GB843717 A GB 843717A GB 5646/58 A GB5646/58 A GB 5646/58A GB 564658 A GB564658 A GB 564658A GB 843717 A GB843717 A GB 843717A
- Authority
- GB
- United Kingdom
- Prior art keywords
- catalyst
- alcohol
- granular
- alloy
- alcohols
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/48—Silver or gold
- B01J23/50—Silver
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/72—Copper
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C31/00—Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
- C07C31/02—Monohydroxylic acyclic alcohols
- C07C31/10—Monohydroxylic acyclic alcohols containing three carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/002—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by dehydrogenation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
Abstract
An alcohol is dehydrogenated to the corresponding aldehyde using a Ag-Cu catalyst containing 0,2 (preferably 0,2-10, particularly 0,3-5)% Cu and preferably up to 0,4% of an anti-sintering agent e.g. MoMnCrV or Si (particularly). The alcohol is preferably aliphatic, particularly methanol, other examples being ethanol, propanol, butanol, benzyl alcohol, o-,m- and p-methylbenzyl alcohols and ethylene glycol. The catalyst may be supported in an inert material e.g. granular quartz or granular, acid-washed silicon carbide. Preferably the reaction is carried out in a cyclic manner and the catalyst may be regenerated with an oxygen containing gas. Reaction conditions are:-550-750 (preferably 625-675) DEG C. temperature and space velocity 100-5000 (preferably 500-2000).ALSO:A catalyst comprising at least 0.2 (preferably 0.2-10 particularly 0.3-5)% by weight of copper, preferably up to 0.4% by weight of an anti-sintering agent (e.g. Mo, Mn, G or V, but especially Si) the balance being silver, is used to dehydrogenate alcohols to the corresponding aldehydes at 550-750 (preferably 625-675) DEG C. and a space velocity of 100-5000 (preferably 500-2000). The alcohol (see Group IV(b)) is preferably aliphatic, particularly methanol, the catalyst may be supported on a material inert to the reaction, such as granular quartz or granular, acid-washed silicon carbide. It is preferred to carry out the process in a cyclic manner wherein the catalyst may be regenerated with an oxygen-containing gas when its activity has fallen to an unsatisfactory level.ALSO:A silver-copper alloy containing at least 0.2 (preferably 0.2-1.0, particularly 0.3-5)% copper and preferably incorporating up to 0.4% silicon as anti-sintering agent (or possibly Mo, Mn, Cr or V as said agent) is used as a catalyst in dehydrogenation of alcohols to aldehydes. The catalyst may be prepared by melting the mixed alloy constituents and pouring the molten alloy to form a powder or by melting the mixed alloy constituents together with aluminium, solidifying the alloy and leaching out the aluminium.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US843717XA | 1957-02-25 | 1957-02-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB843717A true GB843717A (en) | 1960-08-10 |
Family
ID=22184532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5646/58A Expired GB843717A (en) | 1957-02-25 | 1958-02-21 | Improvements in and relating to dehydrogenation |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB843717A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2471809A1 (en) * | 1979-12-18 | 1981-06-26 | Johnson Matthey Co Ltd | CATALYST AND CATALYST SUPPORT, APPLICATIONS THEREOF IN CATALYTIC PROCESSES |
| EP0068840A1 (en) * | 1981-06-29 | 1983-01-05 | Monsanto Company | Manufacture of aqueous formaldehyde |
| EP0079322A1 (en) * | 1981-10-08 | 1983-05-18 | Monsanto Company | Manufacture of aqueous formaldehyde |
-
1958
- 1958-02-21 GB GB5646/58A patent/GB843717A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2471809A1 (en) * | 1979-12-18 | 1981-06-26 | Johnson Matthey Co Ltd | CATALYST AND CATALYST SUPPORT, APPLICATIONS THEREOF IN CATALYTIC PROCESSES |
| EP0068840A1 (en) * | 1981-06-29 | 1983-01-05 | Monsanto Company | Manufacture of aqueous formaldehyde |
| EP0079322A1 (en) * | 1981-10-08 | 1983-05-18 | Monsanto Company | Manufacture of aqueous formaldehyde |
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