通过高温热解的方法制备出在活性炭中掺杂N元素的催化剂载体，并用原位还原法将过渡金属Ir负载到催化剂载体上，然后经过氧化处理制备出金属颗粒较小且分散均匀的N掺杂活性炭负载型Ir催化剂（Ir-N@C）。Ir-N@C多相催化剂在以乙醇与正戊醇制备直链醇（正庚醇）的应用中表现出一定的活性和较高的选择性。通过对催化剂的制备与反应条件的优化，交叉缩合产物直链醇（正庚醇）与支链醇（2-乙基-戊醇）的比例可以达到6.0：1.0，乙醇的单程转化率达到45.9%。Ir-N@C催化剂在循环实验中活性没有明显的变化，表现出一定的稳定性及循环使用性。

Nitrogen-doped activated carbon supports are prepared by high temperature pyrolysis method,and then transition metal Ir is uniformly immobilized on the supports by in-situ reduction method.Finally,the nitrogen-doped activated carbon-supported Ir catalyst (Ir-N@C) is prepared by the oxidation treatment,in which Ir metal particles have small size and are dispersed uniformly on the supports.The prepared Ir-N@C heterogeneous catalyst shows certain activity and higher selectivity in the preparation of straight chain alcohol (n-heptanol) from ethanol and n-pentanol.The mass ratio of straight chain alcohol (n-heptanol) to branched alcohol (2-ethyl-pentanol) among cross-condensation products can reach 6.0:1.0 and the single-pass conversion of ethanol can reach 45.9% after optimizing catalyst preparation and reaction condition.In recycling experiments,Ir-N@C catalyst shows good stability and recycling performance.

王振东(1992-),男,硕士研究生,研究方向为催化化学,wangzhendong-ouc@163.com