Process for producing cumene and process for propylene oxide production including the production process
AssigneeSumitomo Chemical Company, Limited
InventorsTetsuo Suzuki, Masaru Ishino, Toshio Nakayama
Life of this patent
Estimating the term…
Abstract
A process for producing cumene by subjecting cumyl alcohol to hydrogenolysis or hydrogenation subsequent to dehydration, which comprises using a palladium-based catalyst as a catalyst for the hydrogenolysis or the hydrogenation, and using hydrogen having a carbon monoxide concentration of 0.1 to 10% by volume as hydrogen.
Claims8
A process for producing cumene by subjecting cumyl alcohol to hydrogenolysis or hydrogenation subsequent to dehydration, which comprises using a palladium-based catalyst as a catalyst for the hydrogenolysis or the hydrogenation, and using hydrogen having a carbon monoxide concentration of 0.1 to 10% by volume as hydrogen.
A process for producing propylene oxide, which comprises the following steps:
- oxidation step:
- a step of obtaining cumene hydroperoxide by oxidizing cumene;
- epoxidation step:
- a step of obtaining propylene oxide and cumyl alcohol by reacting cumene hydroperoxide obtained in the oxidation step with propylene in an excess amount;
- and
- cumene production step:
- a step of producing cumene by subjecting cumyl alcohol obtained in the epoxidation step to hydrogenolysis or hydrogenation subsequent to dehydration and recycling said cumene to the oxidation step, and
- which comprises using a palladium-based catalyst as a catalyst for hydrogenolysis or hydrogenation;
- and using hydrogen having a carbon monoxide concentration of 0.1 to 10% by volume as hydrogen.
Dependencies are inferred from the claim text.