GB2188930A - Preparation of higher alcohols - Google Patents

Preparation of higher alcohols Download PDF

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Publication number
GB2188930A
GB2188930A GB8708608A GB8708608A GB2188930A GB 2188930 A GB2188930 A GB 2188930A GB 8708608 A GB8708608 A GB 8708608A GB 8708608 A GB8708608 A GB 8708608A GB 2188930 A GB2188930 A GB 2188930A
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United Kingdom
Prior art keywords
methanol
hydrogen
carbon monoxide
catalyst
carbon
Prior art date
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Granted
Application number
GB8708608A
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GB8708608D0 (en
GB2188930B (en
Inventor
Christopher Leslie Winter
Anthony Horton
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Humphreys and Glasgow Ltd
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Humphreys and Glasgow Ltd
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Publication date
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Publication of GB8708608D0 publication Critical patent/GB8708608D0/en
Publication of GB2188930A publication Critical patent/GB2188930A/en
Application granted granted Critical
Publication of GB2188930B publication Critical patent/GB2188930B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • C07C29/32—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring increasing the number of carbon atoms by reactions without formation of -OH groups

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

Abstract

A process for the production of higher alcohols in which the feedstock is a gas containing hydrogen, methanol and carbon monoxide in which the hydrogen to carbon monoxide ratio is below 0.33.

Description

SPECIFICATION Feedstock process Processes for the manufacture of compounds containing two or more carbon atoms, particularly alcohols (higher alcohols), from synthesis gas mixtures, i.e. mixtures containing carbon monoxide, hydrogen, and possibly carbon dioxide, do not usually give high yields of individual compounds.
One of the purposes of this invention is to raisethe yields of individual compounds when converting a one carbon atom feedstock into a product containing two or more carbon atoms.
The invention comprises using methanol as part of the feedstock and feeding this to the catalyst along with synthesis gas which is high in carbon monoxide content. The hydrogen to carbon monoxide ratio is below 0.33, preferably below 0.25, on entry to the catalyst.
Two extremes of this invention are the feeding of methanol in a carrier gas containing hydrogen and carbon monoxidewhich intotocomprisesthe feedstockto the catalyst. Alternatively some or all of the carbon monoxide/hydrogen carrier gas is recycled within a catalyst containing loop and the methanol is injected into the recycled gas before it contacts the catalyst.
Quantitatively the methanol could be injected into such a carrier gas whose composition was such that if contacted underthe prevailing conditions with a methanol synthesis catalyst further methanol would be produced.
Alternatively, methanol could be introduced into such a barrier gas such that the concentration of methanol present in the carbon monoxide/hydrogen carrier gas is greater than 25% of the (calculated) equilibrium methanol concentration the same conditions.
Advantages ofthis invention are that the exothermic heat formation of methanol is not added to any exotherm of any compounds formed, and that the product distribution is altered in thatthe starting point is, in part, now methanol ratherthan just carbon monoxide/dioxide and hydrogen.
1. A process forthe production of higher alcohols from a gas containing hydrogen, carbon monoxide and methanol in which the hydrogen to carbon monoxide ratio is below 0.33.
2. Higheralcoholswhen produced by means of this invention.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (2)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Feedstock process Processes for the manufacture of compounds containing two or more carbon atoms, particularly alcohols (higher alcohols), from synthesis gas mixtures, i.e. mixtures containing carbon monoxide, hydrogen, and possibly carbon dioxide, do not usually give high yields of individual compounds. One of the purposes of this invention is to raisethe yields of individual compounds when converting a one carbon atom feedstock into a product containing two or more carbon atoms. The invention comprises using methanol as part of the feedstock and feeding this to the catalyst along with synthesis gas which is high in carbon monoxide content. The hydrogen to carbon monoxide ratio is below 0.33, preferably below 0.25, on entry to the catalyst. Two extremes of this invention are the feeding of methanol in a carrier gas containing hydrogen and carbon monoxidewhich intotocomprisesthe feedstockto the catalyst. Alternatively some or all of the carbon monoxide/hydrogen carrier gas is recycled within a catalyst containing loop and the methanol is injected into the recycled gas before it contacts the catalyst. Quantitatively the methanol could be injected into such a carrier gas whose composition was such that if contacted underthe prevailing conditions with a methanol synthesis catalyst further methanol would be produced. Alternatively, methanol could be introduced into such a barrier gas such that the concentration of methanol present in the carbon monoxide/hydrogen carrier gas is greater than 25% of the (calculated) equilibrium methanol concentration the same conditions. Advantages ofthis invention are that the exothermic heat formation of methanol is not added to any exotherm of any compounds formed, and that the product distribution is altered in thatthe starting point is, in part, now methanol ratherthan just carbon monoxide/dioxide and hydrogen. CLAIMS
1. A process forthe production of higher alcohols from a gas containing hydrogen, carbon monoxide and methanol in which the hydrogen to carbon monoxide ratio is below 0.33.
2. Higheralcoholswhen produced by means of this invention.
GB8708608A 1986-04-10 1987-04-10 Preparation of higher alcohols Expired - Lifetime GB2188930B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8608746A GB8608746D0 (en) 1986-04-10 1986-04-10 Feedstock process

Publications (3)

Publication Number Publication Date
GB8708608D0 GB8708608D0 (en) 1987-05-13
GB2188930A true GB2188930A (en) 1987-10-14
GB2188930B GB2188930B (en) 1990-04-04

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Family Applications (2)

Application Number Title Priority Date Filing Date
GB8608746A Pending GB8608746D0 (en) 1986-04-10 1986-04-10 Feedstock process
GB8708608A Expired - Lifetime GB2188930B (en) 1986-04-10 1987-04-10 Preparation of higher alcohols

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB8608746A Pending GB8608746D0 (en) 1986-04-10 1986-04-10 Feedstock process

Country Status (1)

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GB (2) GB8608746D0 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0311297A2 (en) * 1987-10-08 1989-04-12 Coal Industry (Patents) Limited Alcohol synthesis process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0311297A2 (en) * 1987-10-08 1989-04-12 Coal Industry (Patents) Limited Alcohol synthesis process
EP0311297A3 (en) * 1987-10-08 1990-01-03 Coal Industry (Patents) Limited Alcohol synthesis process

Also Published As

Publication number Publication date
GB8708608D0 (en) 1987-05-13
GB2188930B (en) 1990-04-04
GB8608746D0 (en) 1986-05-14

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PCNP Patent ceased through non-payment of renewal fee