电流密度对CuCo/CNTs 催化剂结构和催化性能的影响
马乐¹，罗梓轩²，王君鹏³
（1. 长庆油田第一采油厂，陕西 西安 710200；2. 长庆化工集团庆阳分公司，甘肃 庆阳 745000；
3. 长庆（宁夏） 精细化工有限公司，宁夏 银川 750000）
摘要： 为了探究不同电流密度对CuCo/CNTs 催化剂结构及其对合成气制低碳醇反应中催化性能的影响，以碳纳米管
为载体，以直流电沉积方法制备了一系列CuCo/CNTs 催化剂，采用XRD （X 射线粉末衍射）和BET（比表面积测定仪）
对其进行表征，最后进行活性评价，得出最优电流密度为2.9 A/dm²，且在电解温度50 ℃，电解时间30 min 下制备的
CuCo/CNTs 催化剂孔径分布均匀，活性组分高度分散，具有较高的CO 转化率和醇选择性。反应条件是温度300 ℃，压
力3 MPa，空速5 000 h^-1，H₂转化的量/CO转化的量=2，此条件下CO 转化率为34.2%，C₃₊醇含量为42.9%。
关键词： 合成气；低碳醇；电沉积；碳纳米管；CuCo催化剂
中图分类号：TE6     文献标识码：A     文章编号：2095-0802-(2020)01-0117-03
Effect of Current Density on Structure and Catalytic Performance of CuCo/CNTs Catalysts
MA Le¹, LUO Zixuan², WANG Junpeng³
(1. PCOC No.1 Oil Production Plant, Xi'an 710200, Shaanxi, China; 2. Qingyang Branch Company, Changqing Chemical Group,
Qingyang 745000, Gansu, China; 3. Changqing (Ningxia) Fine Chemical Corporation, Yinchuan 750000, Ningxia, China)
Abstract: In order to investigate the effect of different current densities on the structure of CuCo/CNTs catalysts and their
catalytic properties in the synthesis of lower alcohols from syngas, a series of CuCo/CNTs were prepared catalysts by direct current
electrodeposition method using carbon nanotubes as a carrier. It was characterized by XRD (X-ray powder diffraction) and BET
(N2 physical adsorption-desorption spectrometer), and finally evaluated for activity. The optimal current density is 2.9 A/dm², and
the CuCo/CNTs catalysts prepared at the electrolysis temperature of 50 ℃and the electrolysis time of 30 min has uniform pore
size distribution, high active component dispersion, high CO conversion and alcohol selectivity. The reaction conditions temperature
is 300 ℃, pressure is 3 MPa, a space velocity is 5 000 h^-1, and H_² conversion divided by CO conversion equals 2. Under these
conditions, the CO conversion is 34.2%, and the C₃₊ alcohol content is 42.9 %.

Key words: syngas; lower alcohol; electrodeposition; carbon nanotubes; CuCo catalyst