糠醇蒸汽沉积聚合法制备有序中孔炭分子筛

Synthesis of Ordered Mesoporous Carbon from Furfuryl Alcohol by Vapor Deposition Polymerization Method

以纯硅MCM-48为模板、对甲苯磺酸为催化剂、糠醇为碳源通过蒸汽沉积聚合制备了高度有序的中孔炭分子筛。先用真空浸渍法将酸性催化剂对甲苯磺酸引入模板MCM-48孔道内,然后采用蒸汽气相沉积法将糠醇引入模板孔道内并聚合。研究发现,浸渍催化剂后的模板最好用乙醇冲洗以去除负载于模板表面的多余催化剂,适宜的乙醇冲洗量为每克模板10mL;引入蒸汽沉积时间以12h为宜;产物用XRD、N2吸附等进行了表征,表明所制得的中孔炭具有规整的三维孔道结构和多重中孔分布。

Ordered mesoporous carbon was successfully synthesized using siliceous MCM-48 as template, p-toluenesulfonic acid （PTSA） as catalyst, and furfuryl alcohol as carbon source by vapor depositon polymerization method, First, PTSA was introduced into the pores of MCM-48 by vacuum infiltration, then MCM-48 was allowed to contact with the vapor of furfural alcohol at 90℃. The suitable reaction time was about 12 h. It was found that MCM-48 ,after impregnated with PTSA ,had better been washed with certain amount of ethanol to remove extra PTSA. The proper amount of ethanol was 10 mlMg MCM-48, The obtained mesoporous carbon was characterized by XRD and N2 adsorption. XRD result showed the ordered three-dimensional channel structure and multiple mesoporous distribution of this carbon.