Controllable synthesis of mesoporous SBA-15 using H2SO4
Controllable synthesis of mesoporous SBA-15 using H2SO4
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DOI：
10.1080/09500839.2021.1903605
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发表时间：
2021-03
影响因子：
1.2
通讯作者：
Qiang Xian;Xinmiao He;Li Chen;Enchao Wang;Hui Dan;Yi Ding
中科院分区：
文献类型：
--
作者：
Qiang Xian;Xinmiao He;Li Chen;Enchao Wang;Hui Dan;Yi Ding
摘要以硫酸为介质合成了介孔分子筛SBA-15。研究了硫酸浓度和合成温度对介孔材料SBA-15形貌和介孔结构的影响。结果表明，当硫酸浓度为2 M时，样品的结构更加有序，而当硫酸浓度为3 M时，样品的结构变得不那么有序.此外，随着硫酸浓度从1 M增加到3 M，SBA-15的形貌由棒状向球状转变。实验结果表明，通过控制硫酸浓度和合成温度，可以得到具有不同结构和形貌的介孔SBA-15。
ABSTRACT Mesoporous SBA-15 has been synthesised using a binary acid H2SO4 as media. The effects of H2SO4 concentration and synthesis temperature on the morphologies and mesostructures of the obtained mesoporous SBA-15 materials were studied. The results revealed that the more-ordered structure was obtained at a H2SO4 concentration of 2 M, while a higher H2SO4 concentration of 3 M led to a less-ordered structure. In addition, with increasing H2SO4 concentration from 1 to 3 M, the morphologies of SBA-15 particles transferred from rod-like to sphere-like. This work demonstrated that mesoporous SBA-15 with various textural properties and morphologies can be feasibly obtained by controlling the H2SO4 concentration and synthesis temperature.