| abstract |
[PROBLEMS] To provide a novel dehydrogenation catalyst, particularly a catalyst for dehydrogenating alcohol. A dehydrogenation catalyst containing a transition metal and a phosphorus compound having a PN bond. Preferably, the phosphorus compound having a PN bond is a compound represented by the general formula IP (R 1 ) 1 (R 2 ) m (NR 3 R 4 ) n (I) (where R 1 to R 4 are H, aliphatic or aromatic) A group hydrocarbon group, two or more groups may be bonded to each other to form a cyclic structure, n is an integer of 1 to 3, 1 and m are integers of 0 to 2, The sum of 1, m and n is 3. ) The compound represented by the formula (1), in particular, a triaminophosphine, wherein the transition metal is a Group 8 transition metal, particularly, ruthenium. This catalyst Suitable for producing gamma-butyrolactone from 1,4-butanediol. |