Method for oxidizing hydrocarbons

Abstract

The present invention relates to a catalyst for oxidizing hydrocarbons with a hydrogen/oxygen mixture. The catalyst contains a) a support material containing titanium and b) silver particles having an average particle size of from 0.3 to 100 nm.

1 . Process for the oxidation of hydrocarbons in the presence of a hydrogen/oxygen mixture on a catalyst which contains silver, containing 
 a) a support containing titanium and    b) silver particles with an average particle size from 0.3 to 100 nm.    
     
     
         2 . Process according to  claim 1 , characterized in that olefins are used as hydrocarbons.  
     
     
         3 . Catalyst containing silver for the oxidation of hydrocarbons containing 
 a) a support containing titanium and    b) silver particles with an average particle size from 0.3 to 100 run.    
     
     
         4 . Use of a catalyst according to  claim 3  for the oxidation of hydrocarbons.  
     
     
         5 . Process according to one of more of  claims 1  to  4 , characterized in that titanyl hydrates, titanium dioxides and silicon/titanium mixed oxides are preferably used as catalyst support.  
     
     
         6 . Process according to one or more of  claims 1  to  4 , characterized in that before titanium application the catalyst support containing silicon is subjected to a treatment with water or aqueous salt solutions (e.g. solutions of ammonium chloride, ammonium nitrate, calcium nitrate, lanthanum nitrate) and the surplus water is then removed.  
     
     
         7 . Process according to one or more of  claims 1  to  6 , characterized in that promoters from the groups (IUPAC periodic system, 1985) 1, 2, preferably potassium, caesium, magnesium, and from the groups 5, preferably tantalum, and from group 13, preferably Al are used.  
     
     
         8 . Process according to one or more of  claims 1  to  6 , characterized in that sulfate contents from 0.1 to 1 wt. % are favourable when titanyl hydrates and/or titanium dioxides are used as catalyst support.