以SBA-15为硬模板剂,采用溶剂挥发诱导煤基沥青烯与聚丙烯腈(PAN)自组装,制备了氮掺杂有序介孔炭(NOMC)。通过CO_(2)活化,进一步提升NOMC的比表面积及电容性能。结果表明,SBA-15、沥青烯、PAN的比例为1∶1.2∶4.8时,800℃炭化所得炭材...以SBA-15为硬模板剂,采用溶剂挥发诱导煤基沥青烯与聚丙烯腈(PAN)自组装,制备了氮掺杂有序介孔炭(NOMC)。通过CO_(2)活化,进一步提升NOMC的比表面积及电容性能。结果表明,SBA-15、沥青烯、PAN的比例为1∶1.2∶4.8时,800℃炭化所得炭材料成炭率与有序性均较高。900℃活化后其比表面积、孔容及孔径依次为602.1 m 2/g,0.426 cm 3/g,3.808 nm,且比电容达到127.2 F/g,相比未活化,提升了41.8%。展开更多
Octa(tetramethylammonium)-polyhedral oligomeric silsesquioxane(TMA-POSS) with cage-like structure was synthesized, the structure was characterized by NMR, FTIR and Elemental analyses. The mesoporous silica was prepare...Octa(tetramethylammonium)-polyhedral oligomeric silsesquioxane(TMA-POSS) with cage-like structure was synthesized, the structure was characterized by NMR, FTIR and Elemental analyses. The mesoporous silica was prepared under alkaline condition using TMA-POSS as the silicon source and hexadecyltrimethylammonium bromide (CTAB) as the template, the structures of these products were characterized by XRD, TEM and nitrogen adsorption and desorption methods. The results indicate that the synthesized silica exhibites a well-ordered hexagonal pore structure with larger specific surface area. With increasing of CTAB molar ratio, the spacing of the crystal plane d100 is increased. The effects of the pH values on the mesoporous structure in the reaction system with different molar ratio of nPOSS / nCTAB were investigated. The synthesis mechanism of mesoporous silica was also discussed.展开更多
In this paper,we have reported the sy nthesis of highly-ordered mesoporo us material with domestic AucP as templating agent.The product has a BET surface area of 534.8m 2 ·g -1 ,pore size of 4.6nm and pore volume...In this paper,we have reported the sy nthesis of highly-ordered mesoporo us material with domestic AucP as templating agent.The product has a BET surface area of 534.8m 2 ·g -1 ,pore size of 4.6nm and pore volume of0.68cm 3 ·g -1 .The synthesis cost of FDU-7is much l ower than that of SBA-15(just 25%of SBA-15),which will be much helpful to the industrializa tion of such mesoporous materials.展开更多
文摘以SBA-15为硬模板剂,采用溶剂挥发诱导煤基沥青烯与聚丙烯腈(PAN)自组装,制备了氮掺杂有序介孔炭(NOMC)。通过CO_(2)活化,进一步提升NOMC的比表面积及电容性能。结果表明,SBA-15、沥青烯、PAN的比例为1∶1.2∶4.8时,800℃炭化所得炭材料成炭率与有序性均较高。900℃活化后其比表面积、孔容及孔径依次为602.1 m 2/g,0.426 cm 3/g,3.808 nm,且比电容达到127.2 F/g,相比未活化,提升了41.8%。
文摘Octa(tetramethylammonium)-polyhedral oligomeric silsesquioxane(TMA-POSS) with cage-like structure was synthesized, the structure was characterized by NMR, FTIR and Elemental analyses. The mesoporous silica was prepared under alkaline condition using TMA-POSS as the silicon source and hexadecyltrimethylammonium bromide (CTAB) as the template, the structures of these products were characterized by XRD, TEM and nitrogen adsorption and desorption methods. The results indicate that the synthesized silica exhibites a well-ordered hexagonal pore structure with larger specific surface area. With increasing of CTAB molar ratio, the spacing of the crystal plane d100 is increased. The effects of the pH values on the mesoporous structure in the reaction system with different molar ratio of nPOSS / nCTAB were investigated. The synthesis mechanism of mesoporous silica was also discussed.
文摘In this paper,we have reported the sy nthesis of highly-ordered mesoporo us material with domestic AucP as templating agent.The product has a BET surface area of 534.8m 2 ·g -1 ,pore size of 4.6nm and pore volume of0.68cm 3 ·g -1 .The synthesis cost of FDU-7is much l ower than that of SBA-15(just 25%of SBA-15),which will be much helpful to the industrializa tion of such mesoporous materials.
