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US 2002/0058840 A1Published application
Process for preparing oximes
AssigneeDegussa AG
InventorsGeorg Friedrich Thiele, Steffen Hasenzahl, Thomas Schiffer
Life of this patent
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Abstract
Oximes are prepared by reacting carbonyl compounds, hydrogen peroxide and ammonia in the presence of a catalyst system comprising a catalyst comprising titanium, silicon and oxygen and a cocatalyst comprising an acidic solid comprising an organic or inorganic support material, where either the support material itself has Lewis-acid or Brönsted acid properties, or Lewis-acid or Brönsted-acid functional groups are applied to the support material.
Claims22
A process for preparing oximes comprising:
- reacting a carbonyl compound, hydrogen peroxide and ammonia in the presence of a catalyst system comprising a catalyst and a cocatalyst,
- wherein the catalyst comprises at least one crystalline microporous or mesoporous solid comprising titanium, silicon and oxygen, and
- the cocatalyst comprises an acidic solid comprising an organic or inorganic support material, and the support material itself has Lewis-acid or Brönsted-acid properties, or Lewis-acid or Brönsted-acid functional groups are physically or chemically applied to the support material.
Dependencies are inferred from the claim text.