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[求助] hclo4-sio2催化剂的制备

最近在做hclo4-sio2催化剂的制备,按文献上写的HClO4 (1.8 g,12.5 mmol,as a 70% aq solution) was added to a suspension of SiO2 (230–400 mesh,23.7 g)
in Et2O (70.0 mL). The mixture was concentrated and
the residue was heated at 100 C for 72 h under vacuum
to furnish HClO4SiO2 (0.5 mmol/g) as a free flowing
powder (50 mg = 0.025 mmol of HClO4).
感觉很不清楚,瞎做出来,试了试反应,也没效果,感觉是催化剂制备那出了问题,谁做过这方面的实验啊,求助帮忙啊,主要是具体的催化剂制备过程
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