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Process For The Preparation Of Predominantly Unbranched Higher Primary Alcohols
Patent Number: US6051743
Publication date: 2000-04-18
Inventor(s): Szameitat, Juergen (DE), Greb, Wolfgang (DE), Lappe, Peter (DE), Bahrmann, Helmut (DE), Deckers, Gregor (DE), Heymanns, Peter (DE), Mueller, Thomas (DE), Wiebus, Ernst (DE)
Applicant(s): Hoechst AG (DE)
Requested Patent: JP6279334
Application Number: US19930163086 19931207
Priority Number(s): DE19924242725 19921217
Priority number : 92 4242725
Priority date : 17.12.1992
Priority country : DE
IPC Classification: C07C29/14; C07C29/143; C07C29/16; C07C45/00
EC Classification: C07C29/141, C07C29/16, C07C45/50
Equivalents: AU5243993, AU664126, BR9305007, CA2111026, DE4242725, EP0602442, A3, JP2030848C, JP7039362B, MX9307868, SG44829, ZA9309292


For the preparation of predominantly unbranched higher primary alcohols, olefins from the Fischer-Tropsch synthesis are reacted with hydrogen and carbon monoxide in the presence of water and a catalyst which is rhodium, in metallic form or as a compound, and a water-soluble phosphine. The reaction product obtained is hydrogenated. The water-soluble phosphines employed are compounds whose anion is a phosphine containing at least one sulfonated or carboxylated aromatic radical and whose cation is a quaternary ammonium or phosphonium ion.

PURPOSE: To obtain predominantly unbranched higher primary alcohols by carrying out Fisher-Tropsch reaction of olefins with CO and H2 in the presence of water, rhodiums and a specified water-soluble phosphine, in liquid phase at a specified temp. and under a specified pressure.

CONSTITUTION: Olefins (pref. 6-20C ones) are reacted with CO and H2 in the presence of water, an R or Rh compd. and water-soluble phosphine in liquid phase at 20-150C under a pressure of 0.1-20 MPa, to obtain aldehydes. Then, aldehydes are hydrogenated, to obtain predominantly unbranched higher primary alcohols. The water-soluble phosphine whose anion is a phosphine containing at least one sulfonated or carboxylated arom. radical and whose cation or cations, corresponding to the charge of the anion, is or are one or more ions of the formula (Z is N or S; A is alkyl or aralkyl; B-D are each alkyl) is used. As anion, 3,4-dimethyl-2,5,6-tris(p-sulphonatephenyl)-1-phosphanorbornadiene, etc., are exemplified. As cation, trimethylcetylammonium ion, etc., are exemplified.