介孔材料的形态控制.pdfVIP

I 介孔材料、合成、形态、应用 关键词： 。介孔材料SBA-15 具有球状、陀螺状、片状、无规则形态的 了制备为表面活性剂，正硅酸四乙酯为硅源十六烷基三甲基溴化铵本文使用 国际热点研究之一。筛形态已成了 子孔道结构，而且对其微米级的形态也有具体要求。因此近年来如何控制介孔分 的用于催化、吸附和分离等领域。在应用中我们不仅需要控制介孔分子筛纳米级 应散中的瓶颈效应等特点，以及作为无机材料所具有的机械和热稳定性，被广泛 扩表面积、长程有序的孔道结构、较大的孔容、良好的扩散性能和能够减小分子 比介孔材料，介孔材料作为一种新型功能材料，由于其具有较大的M41S 合成出 公司首次成功Mobil 年1992 纳米以内。2但其孔径都被限制在,工合成多孔材料 人年代人们发现一些天然多孔材料的优越性能以来就开始尝试40世纪20 自 要 摘 介孔材料的形态控制 介孔材料的形态控制 Abstract AAbbssttrraacctt Since The advantages of natural porous materials was discovered in the 1940s, People began to synthetic porous material. However, its aperture was limited to less than 2 nm. In 1992, the novel M41S mesoporous materials was firstly reported by Mobils researchers, much attention has been paid to this kind of materials.Theyhave not only larger surface area, uniform pore structure and huge pore volume, which can reduce bottleneck phenomenon in molecular diffusion, but also higher mechanically and chemicallystabilityas new inorganic materials.Thesematerials havebeen widely used as catalysts, sorbents and separation materials as theyweresynthesized firstly.In many practical applications，We not only need to control the mesoporous molecular sieve nano-level structure of the channel, but also the morphology of its Micron have specific requirements. So in recent years, the studies of how to control the morphologyofmesoporousmolecularsievewasoneoftheinternationalhotspot. In this paper, A spherical, gyroscope-like, flaky, no rules of form SBA-15 molecular sieve was synthesized using cetyltrimethylammonium bromide as a surfactantandtetraethylorthosilicateasasilicasource. Keywords: KKeeyywwoorr