GB786238A - Improvements in or relating to composite catalysts for use in the hydration of olefins and to the preparation of alcohols thereby - Google Patents

Improvements in or relating to composite catalysts for use in the hydration of olefins and to the preparation of alcohols thereby

Info

Publication number
GB786238A
GB786238A GB35997/55A GB3599755A GB786238A GB 786238 A GB786238 A GB 786238A GB 35997/55 A GB35997/55 A GB 35997/55A GB 3599755 A GB3599755 A GB 3599755A GB 786238 A GB786238 A GB 786238A
Authority
GB
United Kingdom
Prior art keywords
phosphoric acid
water
catalyst
water vapour
olefin
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
GB35997/55A
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.)
Bataafsche Petroleum Maatschappij NV
Original Assignee
Bataafsche Petroleum Maatschappij NV
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 Bataafsche Petroleum Maatschappij NV filed Critical Bataafsche Petroleum Maatschappij NV
Publication of GB786238A publication Critical patent/GB786238A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/03—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by addition of hydroxy groups to unsaturated carbon-to-carbon bonds, e.g. with the aid of H2O2
    • C07C29/04—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by addition of hydroxy groups to unsaturated carbon-to-carbon bonds, e.g. with the aid of H2O2 by hydration of carbon-to-carbon double bonds
    • 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

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  • 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)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

An alcohol is prepared by contacting a gaseous mixture of an olefin and water at elevated temperature and pressure with a catalyst comprising an aqueous solution of phosphoric acid, having a concentration of at least 70 per cent, supported on a porous diatomaceous material, the diatom skeletons of which are coated with silica gel (see Group III). The reaction may be carried out at a temperature of 250-350 DEG C., a pressure of at least 500 lb. per sq. in., and a mol. ratio of water to olefin of between 0.3 and 1. During the reaction, minor amounts of aqueous phosphoric acid may be added to the catalyst. The alcohol is condensed out from the gaseous product, the remaining gases being mixed with more olefin and water vapour and recycled. Olefins derived from the thermal or catalytic cracking of petroleum hydrocarbons may be hydrated. In examples, ethylene is converted to ethyl alcohol. Specification 651,275 is referred to.ALSO:Catalyst for the hydration of olefins to alcohols (see Group IV (b)) comprises an aqueous solution of phosphoric acid supported on porous inert diatomaceous material, the diatom skeletons of which are coated with silica gel; the catalyst is prepared by saturating the diatomaceous material with a strong aqueous solution of phosphoric acid, heating in an atmosphere containing water vapour, digesting with acidified hot water having a pH of less than about 1.0, washing with hot water, drying, and then impregnating with aqueous phosphoric acid solution. The water vapour present during the heating step has a partial pressure, e.g. 50-500 mm. mercury, which is less than the partial pressure of water vapour in equilibrium with the phosphoric acid solution. Heating may be carried out at a temperature of 150-400 DEG C. and at atmospheric, increased, or reduced pressure. The digestion with acidified water, which may take place at above 85 DEG C., dissolves out metal phosphates and hydrolyses silicyl phosphate to silica gel; in Example (I) the digestion is repeated. The carrier is preferably in the form of granules or pellets. The final impregnation may be carried out with a 55-65 per cent aqueous phosphoric acid solution, the acid then being concentrated to above 70 per cent in situ before use. Specification 651,275, [Group IV (b)], is referred to.
GB35997/55A 1954-12-17 1955-12-15 Improvements in or relating to composite catalysts for use in the hydration of olefins and to the preparation of alcohols thereby Expired GB786238A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US786238XA 1954-12-17 1954-12-17

Publications (1)

Publication Number Publication Date
GB786238A true GB786238A (en) 1957-11-13

Family

ID=22145228

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35997/55A Expired GB786238A (en) 1954-12-17 1955-12-15 Improvements in or relating to composite catalysts for use in the hydration of olefins and to the preparation of alcohols thereby

Country Status (2)

Country Link
DE (1) DE1042561B (en)
GB (1) GB786238A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2375170A1 (en) * 1976-12-24 1978-07-21 Veba Chemie Ag OLEFINS HYDRATION PROCESS
US8809600B2 (en) 2009-01-15 2014-08-19 Harald Kohnz Process for the production of lower alcohols by olefin hydration

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2375170A1 (en) * 1976-12-24 1978-07-21 Veba Chemie Ag OLEFINS HYDRATION PROCESS
US8809600B2 (en) 2009-01-15 2014-08-19 Harald Kohnz Process for the production of lower alcohols by olefin hydration

Also Published As

Publication number Publication date
DE1042561B (en) 1958-11-06

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