GB346221A - Process for the manufacture of acrolein - Google Patents

Process for the manufacture of acrolein

Info

Publication number
GB346221A
GB346221A GB17816/30A GB1781630A GB346221A GB 346221 A GB346221 A GB 346221A GB 17816/30 A GB17816/30 A GB 17816/30A GB 1781630 A GB1781630 A GB 1781630A GB 346221 A GB346221 A GB 346221A
Authority
GB
United Kingdom
Prior art keywords
phosphate
acrolein
glycerol
pumice
per cent
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
GB17816/30A
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.)
Schering Kahlbaum AG
Original Assignee
Schering Kahlbaum 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 Schering Kahlbaum AG filed Critical Schering Kahlbaum AG
Publication of GB346221A publication Critical patent/GB346221A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C07C45/51—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition
    • C07C45/52—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition by dehydration and rearrangement involving two hydroxy groups in the same molecule

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Acrolein is obtained by passing glycerol vapours at high temperatures, e.g. above 300 DEG C., over salts of acids which are higher than dibasic, or mixtures thereof. These salts may be distributed in metal tubes on carrier substances such as pumice, the impregnation of the carrier being effected by precipitation when necessary. By distillation from the receiver through a dephlegmator, pure acrolein is obtained, even when aqueous glycerol, e.g. 50 per cent glycerol, is sued as the starting material. In the examples, (1) pumice is impregnated with 1 per cent of normal lithium phosphate, dried, and introduced into a glass tube which is heated in an electric furnace to 400-420 DEG C. The product is fractionally distilled to yield acrolein. (2) Copper phosphate is employed at 425-430 DEG C. Further example of suitable catalysts, with their optimum temperatures, are bismuth phosphate (400 DEG C.), silver phosphate (400-410 DEG C.), ferric phosphate (390-410 DEG C.), and magnesium borate (500 DEG C.).
GB17816/30A 1929-06-15 1930-06-10 Process for the manufacture of acrolein Expired GB346221A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE346221X 1929-06-15

Publications (1)

Publication Number Publication Date
GB346221A true GB346221A (en) 1931-04-09

Family

ID=6255098

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17816/30A Expired GB346221A (en) 1929-06-15 1930-06-10 Process for the manufacture of acrolein

Country Status (1)

Country Link
GB (1) GB346221A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2421554A (en) * 1943-05-01 1947-06-03 Shell Dev Catalytic cleavage of glycols
US8703450B2 (en) 2005-02-28 2014-04-22 Evonik Degussa Gmbh Water-absorbent polymer structures based on renewable resources and method for producing said structures

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2421554A (en) * 1943-05-01 1947-06-03 Shell Dev Catalytic cleavage of glycols
US8703450B2 (en) 2005-02-28 2014-04-22 Evonik Degussa Gmbh Water-absorbent polymer structures based on renewable resources and method for producing said structures

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