Cu/MgO催化剂的MOCVD法制备及其γ-戊内酯加氢制1,4-戊二醇性能

以Cu（acac）₂为金属有机铜前体，层状MgO为载体，采用金属有机化学气相沉积方法（MOCVD）制备了Cu/MgO催化剂，并通过X射线衍射（XRD）、傅里叶变换红外光谱（FT-IR）、场发射扫描电镜（FE-SEM）、透射电子显微镜（TEM）和N₂物理吸附等方法对Cu/MgO催化剂结构进行表征。结果表明，有机铜前体沉积在了MgO上，并且在沉积后，载体MgO的晶体结构仍然保留完整。利用生物质平台分子γ-戊内酯加氢反应来评价Cu/MgO催化剂的催化性能。研究表明，在473 K和10 MPa反应条件下，18% Cu/MgO催化剂表现出优异的催化活性（90.5%）和1，4-戊二醇选择性（94.4%），且催化剂循环三次，催化活性没有显著降低。

Preparation of Cu/MgO catalysts for γ-valerolactone hydrogenation to 1, 4-pentanediol by MOCVD

The laminar MgO with high specific area and the organometallic precursor Cu(acac)₂ were used for the successful synthesis of Cu/MgO catalysts by metal-organic chemical vapor deposition (MOCVD) method. The copper supported on MgO catalysts were characterized by means of X-ray diffraction, Fourier-transform infrared (FT-IR) spectroscopy, field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM) and N₂-physisorption. Characterization results indicated that the organic precursor was successfully deposited onto MgO and the crystal structure of MgO remained intact after deposition. The hydrogenation of γ-valerolactone (γ-GVL) was employed to evaluate the catalytic performance of the Cu/MgO catalysts. It was found that the 18% Cu/MgO catalyst exhibited excellent catalytic activity (90.5%) and selectivity (94.4%) for 1,4-PDO at 473 K and 10 MPa, and the catalytic activity of Cu/MgO did not diminish significantly after cycling for three times.