CAJ | 학술논문

通过一种新颖的方法,即软模板-固液技术(CSSL)合成具有高比表面积的介孔纳米晶体氧化锆.首先,通过软模板法以1-十六烷基-3-甲基咪唑溴(C16mim+Br-)为结构导向剂,硫酸锆为无机前驱物合成了介观相氧化锫杂化物,然后该杂化物与固体硝酸铜无机盐研磨并进行热处理.在600℃焙烧后所得到的氧化锆材料具有蠕虫状介孔结构,且孔壁由尺寸约为2.50nm的四方相氧化锆纳米粒子组成.该材料的比表面积为240.0 m2·g-1,孔径为4.10 nm.与之对应,使用单一的软模板法在相同的温度焙烧后,所得到的氧化锆材料介孔结构坍塌,比表面积仅为9.5m2·g-1.
통과일충신영적방법,즉연모판-고액기술(CSSL)합성구유고비표면적적개공납미정체양화고.수선,통과연모판법이1-십륙완기-3-갑기미서추(C16mim+Br-)위결구도향제,류산고위무궤전구물합성료개관상양화부잡화물,연후해잡화물여고체초산동무궤염연마병진행열처리.재600℃배소후소득도적양화고재료구유연충상개공결구,차공벽유척촌약위2.50nm적사방상양화고납미입자조성.해재료적비표면적위240.0 m2·g-1,공경위4.10 nm.여지대응,사용단일적연모판법재상동적온도배소후,소득도적양화고재료개공결구담탑,비표면적부위9.5m2·g-1.
A novel strategy involving the combination of soft-templating and the solid-liquid method (CSSL) is presented for the synthesis of mesoporous nanocrystalline zirconia with a high specific surface area.The mesostructured zirconia hybrid is firstly synthesized by the soft-templating method using 1-hexadecyl-3-methylimidazolium bromide (C16mim+Br-)as the structure-directing agent and zirconium sulphate as an inorganic precursor.It is then ground in the presence of solid copper nitrate followed by heat-treatment in air.The resulting zirconia material，after calcination at 600℃，possesses a wormlike arrangement of mesopores surrounded by tetragonal ZrO2 nanocrystallites of ca 2.50 nm diameter.The Brunauer-Emmett-Teller(BET)surface area is 240.0 m2·g-1 and the pore size is 4.10 nm.However，no mesoporous structure exists in the obtained zirconia material that was produced using the simple soft-templating method at the same calcination temperature.The BET surface area is only 9.5 m2·g-1 for this material.