GB843717A - Improvements in and relating to dehydrogenation - Google Patents

Improvements in and relating to dehydrogenation

Info

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
Application number
GB5646/58A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB843717A publication Critical patent/GB843717A/en
Expired legal-status Critical Current

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.
GB5646/58A 1957-02-25 1958-02-21 Improvements in and relating to dehydrogenation Expired GB843717A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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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