| abstract |
The invention discloses an isomerization catalyst and a preparation method thereof, and a preparation method of β-isophorone. Described isomerization catalyst, its structural formula is shown as: M represents Cr, Mn, Fe, Co, Ni, Cu, and Zn. The catalyst of the invention has high selectivity and high yield for the isomerization reaction of α-isophorone to form β-isophorone, the catalyst preparation is simple, the active groups are supported on the carrier through chemical bonds, and the catalyst is stable Strong, can be applied repeatedly without obvious loss of activity. Using the catalyst and benzoquinone and naphthoquinone as auxiliary agents, α-isophorone is prepared by isomerization reaction to prepare β-isophorone, which has high selectivity and can inhibit the side reactions of Michael addition and carbonyl condensation. . |