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Process for the preparation of p-benzoquinone

  • US 4,973,720 A
  • Filed: 10/04/1988
  • Issued: 11/27/1990
  • Est. Priority Date: 10/16/1987
  • Status: Expired due to Term
First Claim
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1. A process of producing p-benzoquinone, wherein hydroquinone and hydrogen peroxide are reacted in water, an aqueous inorganic acid solution, an inert organic polar solvent or a mixture of water with an inert organic polar solvent in the presence of a catalyst selected from the group consisting of iodine, hydrogen iodide, sodium iodide, potassium iodide, lithium iodide, zinc iodide, magnesium iodide, and iodates of alkali metals.

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