METHOD OF PRODUCTION OF STYRENE Russian patent published in 1999 - IPC

FIELD: petrochemical industry; joint production of propylene oxide and styrene. SUBSTANCE: methyl phenylcarbinol-containing agent is subjected to liquid phase catalytic dehydration at levated temperature in presence of modified sulfuric acid as catalyst by introducing oxygen-containing organic compounds and/or nitrogen-containing compounds. Used as oxygen-containing organic compounds are: keton, alcohol, carboxylic acid, alkylene glycol, esters and ethers obrained on base of olefins and methyl phenylcarbonyl, organic acids and phenol and/or their mixtures; used as nitrogen-containing compounds are: amines, amino alcohols, Mannich base, oxyquinoline-, alkyl-, dialkyl hydroxylamine, hydrazine, pyridine, amides, such as formamides, alkyl formamide, dialkyl formanide, acetamide, carbamide, sulfamide, amidosulfuric acid, their derivatives and/or their mixtures. EFFECT: enhanced selectivity of styrene formation; reduction of content of high-boiling products in dehydration products. 6 cl, 19 ex