Preparation of monolithic aluminium titanate with well-defined macropores via a sol–gel process accompanied by phase separation
作者： Xingzhong Guo , Wenjun Zhu , Xiaobo Cai , Shengxing Liu , Hui Yang
DOI: 10.1016/J.MATDES.2015.06.055
关键词: Porosity 、 Formamide 、 Amorphous solid 、 Titanate 、 Monolith 、 Materials science 、 Aluminium 、 Chemical engineering 、 Chromatography 、 Ethylene oxide 、 Sol-gel
摘要: Abstract Monolithic aluminium titanate with well-defined macropores has been prepared through a sol–gel process accompanied by phase separation, using poly(ethylene oxide) (PEO) to induce the separation and formamide (FA) control gelation of Al 2 O 3 –TiO system. Appropriate amounts PEO allow formation xerogel cocontinuous macroporous structure monolithic shape. The pore size resultant dried gels is in range 2–3 μm porosity above 60%. as-dried gel amorphous completely transforms into single TiO 5 after heat-treated at 1300 °C. well maintained while skeleton becomes smooth heat-treatment.
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