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Abstract:
采用十六烷基三甲基溴化铵(CTAB)作为模板剂,正硅酸乙酯(TEOS)为硅源,在碱性条件下,用低温合成方法合成了有序介孔硅,并以此为硬模板,蔗糖为碳前驱体,采用液相浸渍方法填充碳源,制备出有序介孔碳.通过XRD、TEM、N2吸附-脱附等测试方法对其表征,结果表明合成的介孔材料高度有序,均具有很高的比表面积(介孔硅,992~1096 m2/g;介孔碳,930~1208 m2/g),较大的孔容和较窄的孔径分布.还发现随着反应温度的升高,介孔硅的结构从二维六方相(p6mm)转变为三维立方相(Ia3d);介孔碳在复制介孔硅后,其结构也从三维立方相(Ia3d)转变为四方相(I41/a),并对相转变机理做了初步探讨.
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化学学报
ISSN: 0567-7351
CN: 31-1320/O6
Year: 2011
Issue: 2
Volume: 69
Page: 226-230
0 . 5 3 3
JCR@2011
1 . 7 0 0
JCR@2023
ESI Discipline: CHEMISTRY;
JCR Journal Grade:4
Cited Count:
WoS CC Cited Count: 0
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count: -1
Chinese Cited Count:
30 Days PV: 5
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