Ni2P/rGO-Al2O3催化剂的表征及加氢脱氧性能

以鳞片石墨为原料，通过Hummer法合成氧化石墨(GO)，然后与拟薄水铝石溶液充分混合后还原，得到还原氧化石墨烯 氧化铝复合载体(rGO-Al₂O₃)，再采用浸渍法制备出负载型Ni₂P/rGO-Al₂O₃催化剂。通过扫描电子显微镜、物理吸附仪和X射线衍射仪等手段对催化剂进行了表征。以苯甲醛加氢脱氧(HDO)制甲苯为反应体系，在反应温度300℃、压力2.5 MPa、反应时间4 h条件下，对比了rGO-Al₂O₃复合载体与单独rGO或Al₂O₃负载的Ni₂P催化剂的加氢脱氧性能。结果表明，rGO-Al₂O₃具有发达的孔结构和较大的表面积，Ni₂P/rGO-Al₂O₃催化剂展现出良好的催化活性和选择性。

Characterization of Ni2P/rGO-Al2O3 Catalyst and Its Catalytic Performance in Hydrodeoxygenation

Using flake graphite as raw material, graphite oxide (GO) was synthesized by hummer method, and GO was mixed with pseudo-boehmite solution to synthesize reduced graphene oxide-alumina (rGO-Al₂O₃ ) composite support. Then, Ni₂P/rGO-Al₂O₃catalyst was prepared by impregnated method. The catalysts were characterized by scanning electron microscopy (SEM), physical adsorption (BET) and X-ray diffraction (XRD). The performance of Ni₂P catalyst supported on rGO-Al₂O₃ composite support and rGO or Al₂O₃ alone in hydrodeoxygenation (HDO) was compared, under the conditions of reaction temperature of 300℃, pressure of 2.5 MPa and reaction time of 4 h with benzaldehyde as substrate. Results show that the rGO-Al₂O₃ has abundant of pore structure and large surface area, and the Ni₂P/rGO-Al₂O₃ catalyst shows excellent catalytic activity and selectivity.