Preparation method of gamma-valerolactone

The invention discloses a preparation method of gamma-valerolactone. The gamma-valerolactone is prepared from acetylpropionic acid through catalytic hydrogenolysis reaction; an adopted catalyst is prepared by taking nitrogen-doped mesoporous carbon as a carrier and taking transition element M as an active component through an embedding method. The invention discloses the preparation method of the gamma-valerolactone; the conversion rate of the acetylpropionic acid and the selectivity of the gamma-valerolactone can be remarkably improved when the nitrogen-doped mesoporous carbon loaded transition element catalyst prepared through the embedding method is adopted; more importantly, the catalyst has extremely high circulating stability; after the catalyst is repeatedly used for 5 times, the extremely high conversion rate and selectivity can still be kept. 本发明公开了种γ-戊内酯的制备方法，由乙酰丙酸经催化氢解反应制备得到，采用的催化剂以掺氮介孔炭为载体，以过渡金属M为活性组分，经包埋法制备得到。本发明公开了种γ-戊内酯的制备方法，采用由包埋法制备的掺氮介孔炭负载的过渡金属催化剂，可显著提高乙酰丙酸的转化率和γ-戊内酯的选择性，更重要的是，该催化剂具有极高的循环稳定性，