催化学报
催化學報
최화학보
CHINESE JOURNAL OF CATALYSIS
2010年
4期
386-393
,共8页
汤建庭%辛洪川%苏玮光%刘健%李灿%杨启华
湯建庭%辛洪川%囌瑋光%劉健%李燦%楊啟華
탕건정%신홍천%소위광%류건%리찬%양계화
铜%氧化硅%介孔材料%多级孔%中性条件%苯酚%羟基化
銅%氧化硅%介孔材料%多級孔%中性條件%苯酚%羥基化
동%양화규%개공재료%다급공%중성조건%분분%간기화
copper%silica%mesoporous material%hierarchical pore%neutral condition%phenol%hydroxylation
在近中性条件下,以正硅酸甲酯和Cu(APTES)_4~(2+)(APTES:(EtO)_3Si(CH_2)_3NH_2)为前驱体,P123为模板剂,KCl为添加剂合成了不同孔结构的含铜介孔氧化硅材料.扫描电镜和氮气吸附结果表明,当Cu(APTES)_Z~(2+)/TMOS摩尔比较高时能得到具有多级孔结构的材料.在以H_2O_2为氧化剂的苯酚羟基化反应中,具有多级孔结构的含铜介孔氧化硅材料表现出比单一介孔材料高的催化性能.
在近中性條件下,以正硅痠甲酯和Cu(APTES)_4~(2+)(APTES:(EtO)_3Si(CH_2)_3NH_2)為前驅體,P123為模闆劑,KCl為添加劑閤成瞭不同孔結構的含銅介孔氧化硅材料.掃描電鏡和氮氣吸附結果錶明,噹Cu(APTES)_Z~(2+)/TMOS摩爾比較高時能得到具有多級孔結構的材料.在以H_2O_2為氧化劑的苯酚羥基化反應中,具有多級孔結構的含銅介孔氧化硅材料錶現齣比單一介孔材料高的催化性能.
재근중성조건하,이정규산갑지화Cu(APTES)_4~(2+)(APTES:(EtO)_3Si(CH_2)_3NH_2)위전구체,P123위모판제,KCl위첨가제합성료불동공결구적함동개공양화규재료.소묘전경화담기흡부결과표명,당Cu(APTES)_Z~(2+)/TMOS마이비교고시능득도구유다급공결구적재료.재이H_2O_2위양화제적분분간기화반응중,구유다급공결구적함동개공양화규재료표현출비단일개공재료고적최화성능.
Copper-containing mesoporous silicas with different mesostructures were synthesized by co-condensation of tetramethoxysilane and Cu(APTES)_4~(2+) (APTES: (EtO)_3Si(CH_2)_3NH_2) with predefined copper species using P123 as template and KC1 as additive under near neutral conditions. Scanning electron microscopy and nitrogen adsorption characterization showed that the material with a hierarchical pore structure was obtained at high Cu(APTES)4~(2+)/TMOS ratio. In phenol hydroxylation using H_2O_2 as oxidant, the material with the hierarchical porous structure showed a higher catalytic activity than that with only the mesoporous structure.
