Classifications

• • C—CHEMISTRY; METALLURGY
  • C01—INORGANIC CHEMISTRY
  • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
  • C01G1/00—Methods of preparing compounds of metals not covered by subclasses C01B, C01C, C01D, or C01F, in general
  • C01G1/04—Carbonyls

Definitions

• the present invention relates to the production of metal carbonyls from materials containing metals capable of forming metal carbonyls.
• the beforedescribed process has the further advantage that the suspension or paste previously prepared can readily be introduced continuously into the apparatus, in which the process is performed, and similarly the residue can be removed in the same form and in the same manner. Moreover the apparatus for the production oii carbonyl is much simpler and safer in operation, slnce the added liquids and melts act as agents facilitating sliding and tightening of the apparatus, in particular when introducing and removing the solid materials.
• the process is carried out with particular advantage under increased pressure for example 100, 200 and even more atmospheres as by raising the pressure the amount of dis solved carbon monoxide is correspondingly increased.
• the height or" the pressure is only limited by the resistibility oi the apparatus.
• the mixing of the material which is capable of forming carbonyl with a liquid is particularly advantageous in the working up of pulverulent or finely granular substances since carbonyl can otherwise be obtained from these substances in a dry state and on a large scale only with difficulty in consequence of their fine distribution.
• Paraffin oil, molten paraflin wax, hydrocarbons of a high boiling point, such as for example benzine, oils, and similar substances which have low vapour tension and great solvent power for carbon monoxide, or the carbonyls of the metals which are to be converted into carbonyls, are suitable inert liquids for the purpose of the present invention.
• the motion of the liquid and the metals against each other can be efiected in any suitable manner, for example by introducing the carbon monoxide or gases containing the same into the suspension or paste in such a manner as to causea motion of the suspension or paste, for example by introducing the gas in fine CllSJllblltlOIl into the suspension or passing it therethrough, or by agitating or revolving the reaction vessel.
• the re action mixture may also be kept moving by means of stirring or like devices. Such devices may be operated by means of the gases supplied to the reaction vessel or the expanding gases leaving the reaction vessel.
• a motion of the suspending liquid may also be caused by heating different parts of the. reaction vessel at dift'erent temperatures or the material under treatment may be moved electromagnetically.
• the carbon monoxide is not necessarily passed into the suspension or paste sepa- I rately, but it may also be dissolved in the 1iqhave a good dissolving action on carbon introductlon' of monoxide.
• a separate gaseous carbon monoxide into the reaction chamber can thus entirely be dispensed with in some cases.
• the process can advantageously be carried out in a continuous manner and in a circular system.
• iron carbonyl saturated at ordinary temperature withcarbon monoxide suitably under the pressure employed in the reaction in which material containing iron is suspended, is introduced continuously intothe reaction chamber and the iron carbonyl after the reaction, now poor in carbon monoxide; is removed from the reaction chamber together with the residue in the form of a paste.
• the material containing iron may also beintroduc'ed separately into the reaction vessel and acted upon with iron carbonyl saturated with carbon monoxide.
• All or part of the iron carbonyl after being separated from the residue, preferablyalso in a continuous manner, can then again be saturated with carbon monoxide for instance by a treatmentwith gaseous carbon monoxide or gases containing the same and reintroduced into the process.
• a treatment with gaseous carbon monoxide or gases containing the same and reintroduced into the process.
• the whole circular process may be carried outwithout releasing the pressure, so that only so much carbon monoxide needs to be compressed as is used'up in the process.
• Example J 5 partsof reduced fine grained roasted pyrites are made into a paste, with 3 parts of paraffinoil, and are treated in intimate contact with streaming carbon monoxide, for about 3 hours at 200 centigrade and 200 atmospheres pressure. In this manner 80 per cent of the iron is'volatilized as ⁇ carbonyl, and can be easily separated from the small. quantity of vapour of pararlin oil carried along with it by fractional condensation or distillation.
• Example 2 I Reduced roasted pyrites placed in an autoclave and submergedin liquid iron carbonyl is treated withcarbon monoxide under a pressure of 180 atmospheres at 180 0., while shaking the autoclave and keepingthe pressure of carbon monoxide constantly at the said height. The iron contained in the initial material is converted after 2 hours to about 80 per cent into iron carbonyl.
• Example 4 Benzine saturated at ordinary temperature with carbon monoxide under a pressure of 200 atmospheres is passed at 175 centrigrade over reduced roasted byritesunder the said pressure.
• the issuing benzine contains 1.7 per cent by weight of iron carbonyl. Any desired amount of iron carbonyl may be incorporated with the benzine by Varying the speed of the flow of the benzine,-if desired, by repeated passing of the benzine preferably in a circuit,'t ⁇ vith or without an additional current of carbon monoxide or gases containing the same.
• any liquid fuel capable of dissolving carbon oxide while keeping the said metal and the said liquid in motion against each other.
• the process of producing metal carbonyl which comprises acting on a metal capable of forming metal carbonyl, in mixture with an inert liquid which is a solvent for ⁇ carbon monoxide, with a gas containing carbon monoxide under increased pressure, while keeping the said metal and the said liquid in motion against each other.
• the process of producing metal carbonyl which comprises acting on a metal capable of forming metal carbonyl, in mixture with the carbonyl of said metal in the liquid state, with a gas containing carbon monoxide, while keeping the said metal and the said metal carbonyl in motion against each other.
• the process of producing metal carbonyl which comprises dissolving a gas containing carbon monoxide in a'liquid inert against a metal capable of forming metal carbonyl andacting with the said solution on the said metal, while keeping the said solution and the carbonyl in motion against each other.
• the process of producing metal carbonyl which comprises dissolving a gas containing carbon monoxide under increased pressure in a liquid inert against a metal capable of forming metal carbonyl and acting with the said solution on the said metal, while keeping the said metal and the said liquid in motion against each other.

Landscapes

• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Inorganic Chemistry (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
• Manufacture And Refinement Of Metals (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=25981514

Family Applications (2)

Family Applications After (1)

Country Status (4)

• 0
  • BE BE362042D patent/BE362042A/xx unknown
  • BE BE362861D patent/BE362861A/xx unknown
• 1928
  • 1928-08-15 DE DEI35256D patent/DE520220C/de not_active Expired
• 1929
  • 1929-06-28 FR FR677548D patent/FR677548A/fr not_active Expired
  • 1929-06-29 US US374938A patent/US1812399A/en not_active Expired - Lifetime
  • 1929-07-29 FR FR37284D patent/FR37284E/fr not_active Expired
  • 1929-08-12 US US385480A patent/US1836474A/en not_active Expired - Lifetime

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