Studiengesellschaft Kohle Mbh

Herbert Lehmkuhl

Klaus-Dieter Mehler

Wilhelm Eisenbach

Gunther Wilke

Bertram Reinhold

Farroch Rabet

Organoaluminum electrolytes and methods for the coating of electrically conductive materials with aluminum or aluminum-magnesium alloys, essentially and preferably consisting of Na&lsqb;Et Al&mdash;H&mdash;AlEt &rsqb; for aluminum coating, or of either K&lsqb;AlEt &rsqb; or Na&lsqb;Et Al&mdash;H&mdash;AlEt &rsqb; and Na&lsqb;AlEt &rsqb; and trialkylaluminum for alloy coating using solutions of these electrolytes in liquid aromatic hydrocarbons or mixtures thereof with aliphatic mono- or polybasic ethers, such as dimethoxyethane, and using soluble anodes of aluminum or of aluminum and magnesium, or of aluminum-magnesium alloy.

Aluminum organic electrolytes and method for electrolytic coating with aluminum or aluminum-magnesium-alloys

The invention relates to organoaluminum electrotyles for the electrolytic deposition of aluminum which are characterized in that they consist of KF . 2 AlEt.sub.3 (A), KF . 2 AlMe.sub.3 (B) and MF . 2 Al(iBu).sub.3 (C), wherein M=sodium or potassium or a mixture of both, in a molar ratio of A:B:C of from 2:1:1 to 7:1:1. The organoaluminum electrolytes are dissolved in from 2 to 4.5 moles, based on the amount of MF employed, of an aromatic hydrocarbon which is liquid at 0.degree. C. The invention further relates to a process for the electrolytic deposition of aluminum on electrically conductive materials by using said electrolytes.

Organoaluminum electrolytes and process for the electrolytic deposition

The invention relates to organoaluminum electrolytes for the electrolytic deposition of high-purity aluminum, which are characterized in that they contain mixtures of organoaluminum complex compounds of the type MF.2 AlR.sub.3 (A), wherein M represents potassium or mixtures of K with a maximum of about 15% by mole of sodium, as well as trialkylaluminum AlR.sub.3 (B) which has not been complexed to an alkali metal fluoride in a molar ratio of A:B of from 4:0.6 to 4:2, as well as a polyfunctional Lewis base of the type R'-OCH.sub.2 CH.sub.2 -OR' (C) in a molar ratio of B:C of from 1:0.5 to 1:1. The organyl radicals R in A are ethyl groups (Et), methyl groups (Me) and iso-butyl groups (iBu) in a molar ratio of Et:Me:iBu as 3:m:n, wherein m and n are numerical values of between 1.1 and 0 and the sum (m+n) is from 0.75 to 1.4. As the solvent for said electrolytes there are used from 3 to 4.5 moles, relative to the amount of alkali metal fluoride employed, of an aromatic hydrocarbon which is liquid at 0.degree. C. or a mixture of such hydrocarbons. The invention further relates to a process for the electrolytic deposition of high-purity aluminum by using said electrolytes.

Organoaluminum electrolytes for the electrolytic deposition of

Disclosed are electrolytes and processes for the metal-plating of metallic materials, and more specifically low-alloy high-strength steels, which processes are characterized in that adhesion-bonding layers of iron, iron and nickel, nickel, cobalt, copper or alloys of said metals or Sn-Ni alloys are electrodeposited on said metallic materials from non-aqueous electrolytes, and then aluminum is electrodeposited thereon in a per se known manner.

Processes for adhesion-bonding between metallic materials and galvanic

Dicyclopentadienyl iron (ferrocene) is produced directly from iron and cyclopentadiene, or derivatives thereof, by electrolyzing a conductive salt-containing solution of a monomeric cyclopentadiene compound in an inert solvent, between an iron anode and a cathode which is inert to the electrolyte.

Electrochemical process for dicyclopentadienyl iron

Process of solubilizing alkali- and alkali-earth metal salts, characterized in that the salts are reacted in the presence of solvents if desired, with open-chain polyethyleneglycoldiethers of the general formula

Method for the solubilizing of alkali metal salts with

Process for reacting an H-acidic organic compound, in which the acidic H-atom is bonded to the organic radical by an oxygen or a sulphur atom, e.g. an alcohol, with a metal having a standard potential which is more positive than -1.66 volts and which at most incompletely reacts with the H-acidic compound under current-free conditions, e.g. Ni, Co, Fe, Mn, Sb, Cu, or Au. The H-acidic compound or a solution thereof is a polar solvent is made conducting by addition of a soluble salt of chlorine, bromine or iodine, and is electrolyzed at a temperature of up to 150.degree. C, using said metal as the anode, for production of the alcoholate.

Process for the electrochemical synthesis of organic metal compounds

Process for reacting an H-acidic organic compound, in which the acidic H-atom is bonded to the organic radical by an oxygen or a sulphur atom, e.g. an alcohol, with a metal having a standard potential which is more positive than -1.66 volts and which at most reacts with the H-acidic compound under current-free conditions, e.g. Ni, Co, Fe, Mn, Sb, Cu, or Au. The H-acidic compound or a solution thereof is a polar solvent is made conducting by addition of a soluble salt of chlorine, bromine or iodine, and is electrolysed at a temperature of up to 150.degree.C, using said metal as the anode, for production of the alcoholate.

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Mulheim/Ruhr, Germany

Herbert Lehmkuhl