热解蔗糖/γ-氧化铝制备碳均匀覆盖的碳/氧化铝复合材料(英文)  

Uniform Carbon-covered Alumina Synthesized by Pyrolysis of Sucrose/γ-Al_2O_3

作　　者：林莉[1] 林伟[1] 王培[1] 朱月香[1] 赵璧英[1] 谢有畅[1] 

机构地区：[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

出　　处：《物理化学学报》2004年第10期1179-1181,共3页Acta Physico-Chimica Sinica

基　　金：国家自然科学基金(20173002);国家重点基础研究发展规划(G2000077503)资助项目~~

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.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.

关 键 词：碳-氧化铝复合材料 热解 蔗糖 Γ-氧化铝 制备 催化剂 吸附剂 

分 类 号：TB332[一般工业技术—材料科学与工程]