物理化学学报 >> 2004, Vol. 20 >> Issue (10): 1179-1181.doi: 10.3866/PKU.WHXB20041002

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热解蔗糖/γ-氧化铝制备碳均匀覆盖的碳/氧化铝复合材料

林莉;林伟;王培;朱月香;赵璧英;谢有畅   

  1. 北京大学化学与分子工程学院,分子动态与稳态国家重点实验室, 北京 100871
  • 收稿日期:2004-06-11 修回日期:2004-07-15 发布日期:2004-10-15
  • 通讯作者: 朱月香 E-mail:zhuyx@pku.edu.cn

Uniform Carbon-covered Alumina Synthesized by Pyrolysis of Sucrose/γ-Al2O3

Lin Li;Lin Wei;Wang Pei;Zhu Yue-Xiang;Zhao Bi-Yin;Xie You-Chang   

  1. State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecule Engineering, Peking University, Beijing 100871
  • Received:2004-06-11 Revised:2004-07-15 Published:2004-10-15
  • Contact: Zhu Yue-Xiang E-mail:zhuyx@pku.edu.cn

摘要: 碳/氧化铝复合材料(CCA)作为催化剂载体或吸附剂具有广泛用途.在文献报道中,大部分的碳-氧化铝复合材料是通过热解气相碳氢化合物制得的,这样在氧化铝表面覆盖的碳通常是不均匀的.本文提出了一个操作简便,且重复性高的新方法来制备碳均匀覆盖的碳/氧化铝复合材料——热解均匀分散在氧化铝表面的蔗糖.在这种复合材料中,碳层厚度可控制为一个石墨单层的厚度,且碳的覆盖度及层数可以通过改变浸渍的蔗糖量及浸渍次数来进行调控.

关键词: 碳/氧化铝(CCA), 蔗糖, 复合材料

Abstract: Carbon-covered alumina (CCA) has been reported to be a promising catalyst support or adsorbent. In the literatures, most of CCAs were prepared by pyrolysis of gaseous hydrocarbon on alumina surface, which was usually not uniformly covered by carbon. In this paper, a simple and novel process has been developed for the preparation of uniform carbon-covered alumina via pyrolysis of sucrose highly dispersed on the surface of alumina. In addition, the coverage and number of carbon layers in CCA can be easily controlled by changing the sucrose content in the precursors and the impregnation times.

Key words: Carbon-covered alumina (CCA), Sucrose, Composite material