Process for gas phase synthesis of vinyl esters
Abstract
Abstract AN IMPROVED PROCESS FOR THE PREPARATION OF VINYL ESTERS BY A PROCESS WHICH COMPRISES CONTACTING A GASEOUS MIXTURE COMPOSED OF ETHYLENE, OXYGEN, AND ORGANIC ALIPHATIC MONO-CARBOXYLIC ACID HAVING UP TO 4 CARBON ATOMS WITH A CATALYST SYSTEM COMPOSED OF PALLADIUM, AN ACETATE OF AN ALKALI METAL ON A CATALYST CARRIER AT AN ELEVATED TEMPERATURE, AND RECOVERING THE FORMED CORRESPONDING VINYL ESTER, THE IMPROVEMENT WHICH COMPRISES EMPLOYING AS SAID CATALYST CARRIER ALUMINA HAVING A SURFACE AREA OF 60150 M.2/G. AND A PURITY OF NO LOWER THAN 99%, SAID CATALYST CARRIER BEING PREPARED BY THE STEPS COMPRISING FORMING A BASIC ALUMINUM SULFATE SOL BY ADDING CARBONATE TO AN AQUEOUS ALUMINUM SULFATE SOLUTION, HEATING THE SOL TO GEL THE SAME, REMOVING SULFATE IONS THEREFROM, DRYING AND CALCINING THE SAME AT A TEMPERATURE OF 750 TO 1100*C, THE OXYGEN BEING PRESENT IN SAID GASEOUS MIXTURE IN A AMOUNT OF FROM 5-20% BASED ON THE SUM VOLUME OF ETHYLENE AND OXYGEN WHILE SAID ORGANIC ALIPHATIC MONO-CARBOXYLIC ACID IS PRESENT FROM 5-15% BASED ON THE SUM VOLUME OF ETHYLENE AND OXYGEN.
Inventors
- 👤 Teruo Yasui
- 👤 Seishiro Nakamura
Bibliographic Details
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