| 摘要 |
IT IS AN OBJECT OF THIS INVENTION TO PROVIDE A METHOD FOR PRODUCING AN ESTER BY A TRANSESTERIFICATION REACTION IN WHICH THE REACTION CAN BE STABLY PERFORMED IN A SHORT TIME AT A PRESSURE APPROXIMATELY EQUAL TO NORMAL PRESSURE. THE ESTER IS PRODUCED BY A TRANSESTERIFICATION REACTION IN WHICH A STARTING MATERIAL ESTER AND AN ALCOHOL ARE BROUGHT INTO CONTACT WITH A SOLID ACID CATALYST THAT DISPLAYS THE CHARACTERISTICS OF A VERY STRONG ACID IN TERMS OF THE ABSOLUTE VALUE OF ARGON ADSORPTION HEAT RANGING FROM 15 TO 22 KJ/MOL. IN PARTICULAR, IT IS PREFERABLY THAT THE STARTING MATERIAL ESTER IN A LIQUID PHASE AND ALCOHOL IN A VAPOR PHASE BE BROUGHT INTO CONTACT WITH THE SOLID ACID CATALYST, AND THAT THE STARTING MATERIAL ESTER BE OIL OR FAT, AND THE ALCOHOL BE METHANOL OR ETHANOL.
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