Method for the electrochemical direct amination of hydrocarbons

Abstract

The invention relates to a process for the electrochemical direct amination of hydrocarbons by means of a diamond electrode and also a process for preparing aniline.

1 . A process for preparing an amine, the process comprising:
 carrying out an amination in from 1 to 99% strength ammonia as electrolyte in one step and electrochemically, in an electrolysis, on an organic compound,   wherein a doped diamond electrode is an electrode.   
     
     
         2 . The process according to  claim 1 , wherein a boron-doped diamond electrode is employed as a cathode and an anode of the electrode. 
     
     
         3 . The process according to  claim 1 , carried out at a current density in a range from 1 to 20 A/dm 2 . 
     
     
         4 . The process according to  claim 1 , wherein the electrolysis is stopped after an amount of charge in a range from 2 to 8 F/mol. 
     
     
         5 . The process according to  claim 1 , wherein the electrolysis is carried out continuously. 
     
     
         6 . The process according to  claim 1 , wherein temperature is in a range from −50 to 50° C. during the electrolysis. 
     
     
         7 . The process according to  claim 1 , wherein a pressure is in a range from 1 to 30 bar during the electrolysis. 
     
     
         8 . The process according to  claim 1 , wherein the electrolysis takes place in an undivided cell. 
     
     
         9 . The process according to  claim 1  carried out at temperature in a range from −50° to −33° C. at atmospheric pressure. 
     
     
         10 . The process according to  claim 1 , carried out at room temperature and a pressure in a range from 1 to 30 bar. 
     
     
         11 . The process according to  claim 1 , wherein the organic compound is an aromatic. 
     
     
         12 . The process according to  claim 1 , wherein the organic compound is benzene. 
     
     
         13 . The process according to  claim 2 , carried out at a current density in a range from 1 to 20 A/dm 2 . 
     
     
         14 . The process according to  claim 2 , wherein the electrolysis is stopped after an amount of charge in a range from 2 to 8 F/mol. 
     
     
         15 . The process according to  claim 3 , wherein the electrolysis is stopped after an amount of charge in a range from 2 to 8 F/mol. 
     
     
         16 . The process according to  claim 13 , wherein the electrolysis is stopped after an amount of charge in a range from 2 to 8 F/mol. 
     
     
         17 . The process according to  claim 2 , wherein the electrolysis is carried out continuously. 
     
     
         18 . The process according to  claim 3 , wherein the electrolysis is carried out continuously. 
     
     
         19 . The process according to  claim 13 , wherein the electrolysis is carried out continuously. 
     
     
         20 . The process according to  claim 4 , wherein the electrolysis is carried out continuously.