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GB937561A - Improvements in or relating to the preparation of melamine - Google Patents

Improvements in or relating to the preparation of melamine

Info

Publication number
GB937561A
GB937561A GB2867361A GB2867361A GB937561A GB 937561 A GB937561 A GB 937561A GB 2867361 A GB2867361 A GB 2867361A GB 2867361 A GB2867361 A GB 2867361A GB 937561 A GB937561 A GB 937561A
Authority
GB
United Kingdom
Prior art keywords
phosphoric acid
melamine
catalyst
heat treatment
relating
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
GB2867361A
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.)
Evonik Operations GmbH
Original Assignee
SKW Trostberg 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 SKW Trostberg AG filed Critical SKW Trostberg AG
Publication of GB937561A publication Critical patent/GB937561A/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
    • B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/14—Phosphorus; Compounds thereof
    • B01J27/16—Phosphorus; Compounds thereof containing oxygen, i.e. acids, anhydrides and their derivates with N, S, B or halogens without carriers or on carriers based on C, Si, Al or Zr; also salts of Si, Al and Zr

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Catalysts (AREA)

Abstract

Melamine is obtained from urea and/or its thermal decomposition products either by heat treatment alone or pressure and heat treatment of the starting material in the presence of ammonia and a catalyst without a porous and/or cellular structure, the catalyst being a phosphoric acid containing oxide (other than the alkali and alkaline earth oxides) and/or phosphoric acid containing carbon, with a total specific external surface area in excess of 0,1 sq. metres/gm. The phosphoric acid is defined and may be partially replaced by boric, arsenic or sulphuric acid or their mixtures.
GB2867361A 1960-11-30 1961-08-08 Improvements in or relating to the preparation of melamine Expired GB937561A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES71491A DE1222506B (en) 1960-11-30 1960-11-30 Process for the production of melamine

Publications (1)

Publication Number Publication Date
GB937561A true GB937561A (en) 1963-09-25

Family

ID=7502510

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2867361A Expired GB937561A (en) 1960-11-30 1961-08-08 Improvements in or relating to the preparation of melamine

Country Status (3)

Country Link
CH (1) CH436318A (en)
DE (1) DE1222506B (en)
GB (1) GB937561A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8058428B2 (en) 2005-05-06 2011-11-15 Lurgi Ag Method for producing melamine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8058428B2 (en) 2005-05-06 2011-11-15 Lurgi Ag Method for producing melamine

Also Published As

Publication number Publication date
DE1222506B (en) 1966-08-11
CH436318A (en) 1967-05-31

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