以一水柠檬酸和六水硝酸钴为原料,采用水热-碳化联合法制备碳包覆纳米金属钴催化剂。通过调变原料比例和碳化温度,得到优选催化剂Co-CA_2.5-500。将制备的催化剂用于肉桂醛选择加氢反应,表现出优异的催化性能,在70℃、2 MPa H₂条件下,以9 mL EtOH+1 mL H₂O为溶剂反应2 h,肉桂醛转化率为75.1%,肉桂醇选择性为64.7%。表征结果表明,Co-CA_2.5-500的高催化性能与碳载体发达的孔道结构和活性金属钴的高度分散有关。

Carbon coated nano cobalt catalyst (Co-CA_x-T) is prepared through a combined hydrothermal-carbonation method,using citric acid monohydrate and cobalt nitrate hexahydrate as raw materials.Co-CA_2.5-500,a preferred catalyst,is synthesized by adjusting raw material ratio and carbonization temperature.The catalyst is evaluated in the selective hydrogenation of cinnamaldehyde,and showing an excellent catalytic performance.The conversion of cinnamaldehyde and the selectivity of cinnamyl alcohol are 75.1% and 64.7%,respectively when the reaction has performed for 2 h at 70℃and 2 MPa of H₂ in 9 mL EtOH+1 ml H₂O solvent.A series of characterization demonstrates that the high catalytic performance of Co-CA_2.5-500 is ascribed to the well-developed pore structure of the carbon carrier and the highly dispersed active metal Co.

张新驰(1998-),女,硕士生,研究方向为多相催化,1786017102@qq.com。