期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 280, 期 -, 页码 133-143出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.micromeso.2019.01.050
关键词
Ordered mesoporous silica; Pore size tailoring; High specific surface area
类别
资金
- German Research Foundation (DFG - Deutsche Forschungsgemeinschaft)
Ordered mesoporous silica materials such as COK-12, analogous to the well-known SBA-15, are characterized by high surface areas and unique features such as defined pore sizes in the meso-size range and high pore ordering. The aim of this work was to prove the washing step and choice of calcination and aging temperature during the COK-12 synthesis as effective tools in tailoring, markedly improving the specific surface area, pore size, and pore volume. By controlling the aging temperature, the pore size was linearly adjusted between 5.7 and 8.1 nm, while preserving the hexagonal ordering of the pores. The synthesized COK-12 powders possess pore volumes and specific surface areas up to 1.23 cm(3) g(-1) and 860 m(2) g(-1), respectively, which is markedly higher than what has previously been reported about COK-12. The presented results and the environmentally friendly character of the synthesis will make COK-12 more interesting for future adaption to the industrial processes, for example in catalysis, adsorption, or drug delivery.
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