GB1078117A - Chemical methods - Google Patents

Chemical methods

Info

Publication number
GB1078117A
GB1078117A GB46830/63A GB4683063A GB1078117A GB 1078117 A GB1078117 A GB 1078117A GB 46830/63 A GB46830/63 A GB 46830/63A GB 4683063 A GB4683063 A GB 4683063A GB 1078117 A GB1078117 A GB 1078117A
Authority
GB
United Kingdom
Prior art keywords
catalyst
steam
fed
phosphoric acid
stages
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
GB46830/63A
Inventor
Mark Semenovich Nemtsov
Revekka Vul Fovna Kachalova
Nadezhda Vasil Evna Romanova
Andreevna Kalinicheva
Fridrikh Shmerkov Shenderovich
Elena Iakovlevna Mandelshtam
Sergei Nickolaevich Arkharov
Vladimir Nazarovich Zlatkin
Valery Iakovlevich Grinshpun
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.)
VSESOUZNY NI SKY I SINT KAUCHO
Original Assignee
VSESOUZNY NI SKY I SINT KAUCHO
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
Priority to DEP1271A priority Critical patent/DE1271106B/en
Application filed by VSESOUZNY NI SKY I SINT KAUCHO filed Critical VSESOUZNY NI SKY I SINT KAUCHO
Priority to GB46830/63A priority patent/GB1078117A/en
Publication of GB1078117A publication Critical patent/GB1078117A/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
    • B01J27/18—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 with metals other than Al or Zr
    • B01J27/1802—Salts or mixtures of anhydrides with compounds of other metals than V, Nb, Ta, Cr, Mo, W, Mn, Tc, Re, e.g. phosphates, thiophosphates
    • B01J27/1808—Salts or mixtures of anhydrides with compounds of other metals than V, Nb, Ta, Cr, Mo, W, Mn, Tc, Re, e.g. phosphates, thiophosphates with zinc, cadmium or mercury
    • 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
    • B01J27/18—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 with metals other than Al or Zr
    • B01J27/1802—Salts or mixtures of anhydrides with compounds of other metals than V, Nb, Ta, Cr, Mo, W, Mn, Tc, Re, e.g. phosphates, thiophosphates
    • B01J27/1806—Salts or mixtures of anhydrides with compounds of other metals than V, Nb, Ta, Cr, Mo, W, Mn, Tc, Re, e.g. phosphates, thiophosphates with alkaline or alkaline earth metals
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C1/00—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon
    • C07C1/20—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as heteroatoms
    • C07C1/247—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as heteroatoms by splitting of cyclic ethers
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2527/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • C07C2527/14—Phosphorus; Compounds thereof
    • C07C2527/16—Phosphorus; Compounds thereof containing oxygen
    • C07C2527/167—Phosphates or other compounds comprising the anion (PnO3n+1)(n+2)-
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2527/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • C07C2527/14—Phosphorus; Compounds thereof
    • C07C2527/16—Phosphorus; Compounds thereof containing oxygen
    • C07C2527/167—Phosphates or other compounds comprising the anion (PnO3n+1)(n+2)-
    • C07C2527/173—Phosphoric acid or other acids with the formula Hn+2PnO3n+1
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/584—Recycling of catalysts

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

Diene hydrocarbons are prepared by reacting dioxan-1,3 with steam containing 0.002-0.06 wt. per cent of phosphoric acid in the presence of a normal metal phosphate, e.g. tricalcium and/or tricadmium phosphate. The catalyst may contain 3-10% of a corresponding hydrogen phosphate. The process may be carried out in a multi-stage reactor in which the phosphoric acid is fed at different rates into the different stages together with steam at 700-800 DEG C., said steam being fed to the first stage at a constant rate of about 1 kg./litre of catalyst/hour and into the other stages at such a rate that the total quantity of steam fed into all the stages is about 1.2 kg./litre of total catalyst/hour. The phosphoric acid need not be added to the catalyst during catalysis but may be added during regeneration of the catalyst. The examples describe the preparation of isoprene, 1,3-butadiene and methyl pentadiene from 4,4-dimethyl, 4-dimethyl and 2,4,4,6-tetramethyl-dioxan-1,3 respectively.
GB46830/63A 1963-10-05 1963-11-27 Chemical methods Expired GB1078117A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DEP1271A DE1271106B (en) 1963-10-05 1963-10-05 Process for the production of diene hydrocarbons by catalytic cleavage of 1,3-dioxanes
GB46830/63A GB1078117A (en) 1963-11-27 1963-11-27 Chemical methods

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB46830/63A GB1078117A (en) 1963-11-27 1963-11-27 Chemical methods

Publications (1)

Publication Number Publication Date
GB1078117A true GB1078117A (en) 1967-08-02

Family

ID=10442740

Family Applications (1)

Application Number Title Priority Date Filing Date
GB46830/63A Expired GB1078117A (en) 1963-10-05 1963-11-27 Chemical methods

Country Status (1)

Country Link
GB (1) GB1078117A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3714202A (en) * 1969-07-15 1973-01-30 Atlantic Richfield Co Vinyl glycerol acetals
FR2195585A1 (en) * 1972-08-08 1974-03-08 Inst Neftechimichesk Metal phosphate prepn - with very low acid content
FR2464747A1 (en) * 1979-09-11 1981-03-20 Batalin Oleg Calcium phosphate catalyst prodn. for decomposition of 1,3-dioxane(s) - by pptn. of calcium phosphate in presence of ammonia,then steaming in presence of conditioning agent
WO2021173739A1 (en) 2020-02-28 2021-09-02 The Procter & Gamble Company Method of using nanofiltration and reverse osmosis to remove chemical contaminants

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3714202A (en) * 1969-07-15 1973-01-30 Atlantic Richfield Co Vinyl glycerol acetals
FR2195585A1 (en) * 1972-08-08 1974-03-08 Inst Neftechimichesk Metal phosphate prepn - with very low acid content
FR2464747A1 (en) * 1979-09-11 1981-03-20 Batalin Oleg Calcium phosphate catalyst prodn. for decomposition of 1,3-dioxane(s) - by pptn. of calcium phosphate in presence of ammonia,then steaming in presence of conditioning agent
WO2021173739A1 (en) 2020-02-28 2021-09-02 The Procter & Gamble Company Method of using nanofiltration and reverse osmosis to remove chemical contaminants
WO2021173738A1 (en) 2020-02-28 2021-09-02 The Procter & Gamble Company Method to remove chemical contaminants

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