GB593837A - Improvements in and relating to the production of formaldehyde - Google Patents

Improvements in and relating to the production of formaldehyde

Info

Publication number
GB593837A
GB593837A GB15225/45A GB1522545A GB593837A GB 593837 A GB593837 A GB 593837A GB 15225/45 A GB15225/45 A GB 15225/45A GB 1522545 A GB1522545 A GB 1522545A GB 593837 A GB593837 A GB 593837A
Authority
GB
United Kingdom
Prior art keywords
manganese
kneaded
ammonium molybdate
molybdate
crushed
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
GB15225/45A
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 GB593837A publication Critical patent/GB593837A/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
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/32—Manganese, technetium or rhenium
    • B01J23/34—Manganese
    • 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
    • B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/24—Chromium, molybdenum or tungsten
    • B01J23/28—Molybdenum
    • 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
    • B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/85—Chromium, molybdenum or tungsten
    • B01J23/88—Molybdenum
    • 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
    • B01J27/186—Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J27/188—Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium with chromium, molybdenum, tungsten or polonium
    • B01J27/19—Molybdenum
    • 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
    • C07C45/27—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation
    • C07C45/32—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen
    • C07C45/37—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of >C—O—functional groups to >C=O groups
    • C07C45/38—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of >C—O—functional groups to >C=O groups being a primary hydroxyl group
    • 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
    • B01J2523/00—Constitutive chemical elements of heterogeneous catalysts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Catalysts for use in the oxidation of methanol to formaldehyde contain molybdenum and another metal selected from manganese, magnesium, cadmium and the alkaline earth metals, the total gram atoms of said other metal or metals not being more than four times the number of gram atoms of molybdenum present. They may be promoted with phosphorus, sulphur or alkali metal and are prepared as follows: (1) manganese nitrate and ammonium molybdate are kneaded with water, dried and crushed; (2) manganese molybdate is precipitated by adding ammonia to a solution containing manganese sulphate and ammonium molybdate. The precipitate is washed, dried and crushed and may be kneaded with phosphoric or sulphuric acid or sodium hydrogenphosphate; (3) magnesium nitrate, ammonium molybdate, phosphoric and nitric acids are kneaded together, ignited and pelleted; (4) cadmium-manganese molybdate is precipitated by adding ammonia to a solution containing manganese and cadmium nitrates and ammonium molybdate, and the precipitate, after washing and drying kneaded with sulphuric acid; (5) calcium molybdate is precipitated by adding ammonia to a solution containing calcium nitrate, ammonium molybdate and molybdic acid; (6) magnesium nitrate is kneaded with aqueous ammonia, ammonium molybdate and nitric acid, dried and crushed.ALSO:Formaldehyde is prepared by oxidizing methanol in the vapour phase with an oxygen containing gas in the presence of an oxidation catalyst containing molybdenum and another metal selected from the group: manganese, magnesium, cadmium and the alkaline earth metals, the total gram atoms of said other metal or metals not being more than four times the number of gram atoms of molybdenum present. The use of catalysts containing molybdenum, calcium and nickel is excluded. The catalyst may be promoted with phosphorus, sulphur or an alkali metal, but when phosphorus is used, the ratio of phosphorus to molybdenum must be less than 2 : 1. Carriers such as pumice, silica gel or infusorial earth may be used. Catalysts may be prepared as follows: (1) manganese nitrate or ammonium molybdate are kneaded with water, dried and crushed; (2) manganese molybdate is precipitated by adding ammonia to a solution containing manganese sulphate and ammonium molybdate. The precipitate is washed, dried and crushed, and may be kneaded with phosphoric acid, sodium hydrogenphosphate or sulphuric acid; (3) magnesium nitrate, ammonium molybdate, phosphoric and nitric acid are kneaded together, ignited and pelleted; (4) cadmium-manganese molybdate is precipitated by adding ammonia to a solution containing manganese and cadmium nitrates, and ammonium molybdate and the precipitate after washing and drying is kneaded with sulphuric acid; (5) calcium molybdate is precipitated by adding ammonia to a solution containing calcium nitrate, ammonium molybdate and molybdic acid; (6) magnesium nitrate is kneaded with aqueous ammonia, ammonium molybdate and nitric acid, dried and crushed. In a detailed example, the catalyst (5) is employed. Specifications 280,712, 286,212, 296,071, 298,142, 313,575, [all in Class 2 (iii)], 381,570 and 547,743 are referred to.
GB15225/45A 1944-06-16 1945-06-15 Improvements in and relating to the production of formaldehyde Expired GB593837A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US593837XA 1944-06-16 1944-06-16

Publications (1)

Publication Number Publication Date
GB593837A true GB593837A (en) 1947-10-27

Family

ID=22022603

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15225/45A Expired GB593837A (en) 1944-06-16 1945-06-15 Improvements in and relating to the production of formaldehyde

Country Status (1)

Country Link
GB (1) GB593837A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3387038A (en) * 1962-09-26 1968-06-04 Du Pont Process for oxidizing propylene and isobutylene to unsaturated aldehyde
EP0294684A2 (en) * 1987-06-06 1988-12-14 Hoechst Aktiengesellschaft Method for the production of formaldehyde

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3387038A (en) * 1962-09-26 1968-06-04 Du Pont Process for oxidizing propylene and isobutylene to unsaturated aldehyde
EP0294684A2 (en) * 1987-06-06 1988-12-14 Hoechst Aktiengesellschaft Method for the production of formaldehyde
EP0294684A3 (en) * 1987-06-06 1989-10-11 Hoechst Aktiengesellschaft Method for the production of formaldehyde

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