GB941642A - A process for the production of formaldehyde - Google Patents

A process for the production of formaldehyde

Info

Publication number
GB941642A
GB941642A GB448862A GB448862A GB941642A GB 941642 A GB941642 A GB 941642A GB 448862 A GB448862 A GB 448862A GB 448862 A GB448862 A GB 448862A GB 941642 A GB941642 A GB 941642A
Authority
GB
United Kingdom
Prior art keywords
methanol
distillation
formaldehyde
iron
residue
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
GB448862A
Inventor
Ulrich Gerloff
Juergen Jahn
Otto Goehre
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.)
BASF SE
Original Assignee
BASF SE
Badische Anilin and Sodafabrik AG
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 BASF SE, Badische Anilin and Sodafabrik AG filed Critical BASF SE
Publication of GB941642A publication Critical patent/GB941642A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C07C31/04—Methanol
    • 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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

In a process for the production of formaldehyde from methanol, crude methanol is submitted to distillation to remove a low-boiling fraction which contains the iron carbonyl contaminants, and the iron-free methanol remaining as residue is subjected to dehydrogenation in the presence of a silver metal catalyst. The distillation is preferably carried out by introducing the crude methanol into the upper part of a fractionating column having a efficiency equivalent to 2 to 20 theoretical plates, a reflux ratio between 1:10 and 1:100 being employed in the fractionation. In general, the amount of distillate, withdrawn from the top of the column, amounts to 0.2 to 0.4% by weight with reference to the crude methanol. In an example, the iron-free methanol, obtained as distillation-residue, is mixed with 45% by weight of water. The solution is evaporated the vapours are mixed with air, and the vapour-mixture is passed over silver crystals at a temperature of about 625 DEG C. whereby the methanol is converted into formaldehyde.
GB448862A 1961-02-09 1962-02-06 A process for the production of formaldehyde Expired GB941642A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB61196A DE1136318B (en) 1961-02-09 1961-02-09 Process for purifying methanol by removing volatile iron carbonyl compounds

Publications (1)

Publication Number Publication Date
GB941642A true GB941642A (en) 1963-11-13

Family

ID=6973108

Family Applications (1)

Application Number Title Priority Date Filing Date
GB448862A Expired GB941642A (en) 1961-02-09 1962-02-06 A process for the production of formaldehyde

Country Status (2)

Country Link
DE (1) DE1136318B (en)
GB (1) GB941642A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8569546B2 (en) 2011-04-26 2013-10-29 Basf Se Oxidative dehydrogenation of methanol to formaldehyde over silver-containing knits

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2444586C3 (en) * 1974-09-18 1986-07-10 Basf Ag, 6700 Ludwigshafen Process for the preparation of concentrated, aqueous solutions of formaldehyde
WO2012146528A1 (en) 2011-04-26 2012-11-01 Basf Se Process for oxidative dehydrogenation of methanol to formaldehyde over silver-containing knits
EP3539657A1 (en) 2018-03-14 2019-09-18 Basf Se Improved catalysts comprising silver based intermetallic compounds

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8569546B2 (en) 2011-04-26 2013-10-29 Basf Se Oxidative dehydrogenation of methanol to formaldehyde over silver-containing knits

Also Published As

Publication number Publication date
DE1136318B (en) 1962-09-13

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