碳微球负载镍催化顺酐选择性加氢制备丁二酸酐

采用水热法制备了胶态碳微球(CMS)，进一步制备了碳微球负载镍催化剂(Ni/CMS), 并进行了FTIR、XRD、SEM、TEM和N2吸附表征。对Ni/CMS催化顺酐(MA) 选择性加氢制备丁二酸酐(SA) 进行了考察，结果表明，以葡萄糖为碳源，经过500 ○C焙烧制备的Ni/CMS催化剂表现最佳的性能，氢气压力、反应温度和反应时间对加氢反应中顺酐转化率有很大影响。以乙酸酐作溶剂，在90 ○C、1.0 MPa H2压力、反应3小时的温和条件下，顺酐在Ni/CMS催化剂上转化率达到98.4%，丁二酸酐选择性为100%。

Selective Hydrogenation of Maleic Anhydride to Succinic Anhydride over Nickel Catalyst Supported on Carbon Microspheres

The colloidal carbon microspheres (CMS) were prepared by hydrothermal method. The nickel catalysts supported on carbon microspheres (Ni/CMS) were further prepared and were characterized by fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM) and N2 adsorption. The selective hydrogenation of maleic anhydride (MA) to succinic anhydride (SA) over the Ni/CMS catalysts was investigated. The results indicated that the Ni/CMS catalyst prepared with glucose as carbon source and calcined at 500 ○C exhibited the best performance. The hydrogen pressure, reaction temperature, and reaction time significantly influenced on the conversion of maleic anhydride in the hydrogenation. 98.4% conversion of MA and 100% selectivity to SA were achieved over the Ni/CMS catalyst in acetic anhydride solvent under the mild conditions of 90 ○C, 1.0 MPa of H2 pressure, and reaction time of 3 h.