摘要:
POLYCYCLIC AROMATIC HYDROCARBONS CAN BE CONVERTED TO OTHER POLYCYCLIC HYDROCARBONS BY A CATALYTIC CONVERSION PROCESS COMPRISING CONTACTING THE HYDROCARBON WITH AN ACIDIC ALUMINO-SILICATE ZIOLITE IN THE PRESENCE OF FROM 5-5000 P.S.I. OF HYDROGEN AT AN ELEVATED TEMPERATURE (E.G., AT LEAST 40*C.) FOR A PERIOD OF TIME SUFFICIENT TO ALLOW THE CATALYTIC CONVERSION TO OCCUR. FOR EXAMPLE, SYM-OCTAHYDROPHENANTHRENE (S-OHP) CAN BE CONVERTED TO SYMOCTAHYDROANTHRACENE BY SO CONTACTING THE S-OHP WITH A GDHY ZEOLITE AT 80-120*C. IN THE PRESENCE OF 15-250 P.S.I.G. OF HYDROGEN AT A WEIGHT HOURLY SPACE VELOCITY IN THE RANGE OF 0.1-20 (PREFERABLY 0.25-10).
摘要:
THE CONVERSION OF S-HYDRINDACENE TO AS-HYDRINDACENE, OR THE REVERSE CONVERSION, IS EFFECTED BY CONTACTING A FEED RICH IN ONE OF THESE ISOMERS WITH HF-BF3 OR HF-BCL3 TO FORM THE OTHER ISOMER BY ISOMERIZATION. THESE ISOMERS ARE USEFUL AS INTERMEDIATES FOR THE PREPARATION OF BENZENE TETRACARBOXYLIC ACIDS OR THEIR ANHYDRIDES, WHICH PRODUCTS HAVE KNOWN UTILITY AS MONOMERS IN POLYMER MANUFACTURE.