In the present work, mesoporous silica supported heteropolyacid salts were studied systematically for glycerol acetalization with formaldehyde. Attention was focused on finding an appropriate loading of Cs_2.5H_0.5PW₁₂O₄₀ (Cs_2.5) on mesoporous silica supports and studying the influence of the architecture of mesoporous silica on activity. Supported Cs_2.5H_0.5PW₁₂O₄₀ on 2D (SBA-15) and 3D (KIT-6 and SBA-16) pore lattice mesoporous silicas have been compared. The activity of all supported Cs_2.5 catalysts was found superior to that of bulk Cs_2.5 owing to the high surface area of the mesoporous supports. While the activity difference between 2D and 3D supports did not meet expectations, mesopore volume had a significant impact on activity, which is attributed to a good access to Cs_2.5H_0.5PW₁₂O₄₀ acid sites. The catalysts could be reused for three times (24 h each time), loosing only 10% glycerol conversion.

在目前的工作中，系统地研究了介孔二氧化硅负载的杂多酸盐对甲醛甲醛缩醛化的研究。注意力集中于在介孔二氧化硅载体上寻找合适的Cs _2.5 H _0.5 PW ₁₂ O ₄₀（Cs _2.5）负载量，并研究介孔二氧化硅结构对活性的影响。比较了在2D（SBA-15）和3D（KIT-6和SBA-16）孔晶格介孔二氧化硅上负载的Cs _2.5 H _0.5 PW ₁₂ O ₄₀。发现所有负载型Cs _2.5催化剂的活性均优于本体Cs _2.5由于介孔载体的表面积大。虽然2D和3D支撑之间的活度差异未达到预期，但中孔体积对活度有重大影响，这是由于可以很好地接近Cs _2.5 H _0.5 PW ₁₂ O ₄₀酸位。催化剂可以重复使用3次（每次24小时），仅损失10％的甘油转化率。