CIESC Journal ›› 2020, Vol. 71 ›› Issue (11): 5016-5024.DOI: 10.11949/0438-1157.20200906

• Celebration Column for School of Chemistry and Chemical Engineering, Nanjing University • Previous Articles     Next Articles

Preparation of Co-N-C catalysts and one-pot method for synthesis of N-benzyl aniline

Jie LENG(),Jingjing LUO,Chonghu SONG,Yan ZHOU,Zhangmin LI,Duanjian TAO()   

  1. College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, Jiangxi, China
  • Received:2020-07-06 Revised:2020-09-17 Online:2020-11-05 Published:2020-11-05
  • Contact: Duanjian TAO

Co-N-C催化剂的制备及“一锅法”合成N-亚苄基苯胺

冷杰(),罗晶晶,宋崇虎,周言,李章敏,陶端健()   

  1. 江西师范大学化学化工学院,江西 南昌 330022
  • 通讯作者: 陶端健
  • 作者简介:冷杰(1994—),男,硕士研究生,1466302929@qq.com
  • 基金资助:
    国家自然科学基金项目(21566011);江西省自然科学基金重点项目(20192ACBL20025);江西省重点研发计划项目(20202BBGL73118)

Abstract:

A series of Co-N-C catalysts were prepared by a two-step process including pre-condensation and high-temperature calcination, as well as formamide was used as both nitrogen and carbon sources, and cobalt acetate was employed as the source of cobalt. Then the characterizations of XRD, TEM, N2 adsorption-desorption, and XPS were carried out to investigate the morphology and textural properties of as-prepared Co-N-C catalysts. Moreover, the catalytic activity and reusability of such Co-N-C catalysts were further studied for one-pot synthesis of N-benzyl aniline from nitrobenzene and benzyl alcohol. The results demonstrated that the annealing temperature and nitrogen-doping have remarkable influence on the catalytic activity of Co-N-C catalysts. The Co-N-C/800 catalyst exhibited the best catalytic performance, in which the conversion of nitrobenzene was 99%, and the selectivity of N-benzyl aniline was 99% under 0.6 MPa nitrogen, temperature of 140℃, and reaction time of 12 h. The catalyst was used repeatedly for 5 times, and its activity did not decrease significantly.

Key words: carbon material, nitrogen doping, nanostructure, catalytic synthesis, N-benzyl aniline, one-pot

摘要:

以甲酰胺为氮源和碳源,乙酸钴为钴源,采用预先缩合/高温焙烧两步法制备了一系列Co-N-C催化剂,利用XRD、TEM、N2吸附-脱附以及XPS等表征了催化剂结构,考察了催化剂用于硝基苯与苯甲醇“一锅法”合成 N-亚苄基苯胺的催化性能及其稳定性。结果表明,焙烧温度和掺杂氮元素对Co-N-C催化剂性能影响显著,催化剂Co-N-C/800具有最好的催化性能,0.6 MPa氮气气氛下,温度140℃,反应12 h,硝基苯转化率达99%,N-亚苄基苯胺选择性达99%,催化剂重复使用5次,其活性无明显下降。

关键词: 碳材料, 氮掺杂, 纳米结构, 催化合成, N-亚苄基苯胺, 一锅法

CLC Number: