| 摘要 |
PROBLEM TO BE SOLVED: To produce tetrahydrofuran stably at high productivity by preventing a solid material from being deposited during a cyclodehydration reaction when the tetrahydrofuran is produced through the cyclodehydration reaction of 1,4-butanediol by using an acid catalyst having a pKa value of no greater than 4.SOLUTION: The present invention is a method for producing tetrahydrofuran by means of a cyclodehydration reaction of 1,4-butanediol in the presence of an acid catalyst having a pKa value of no greater than 4 in a reaction vessel, wherein a starting material liquid containing 1,4-butanediol made available to the reaction contains 0.01-0.35 wt.% of 2-(4-hydroxybutoxy)-tetrahydrofuran and 1-1,000 wt.ppm inclusive by concentration of nitrogen atoms of at least either of an amine and amide. |
