以具有两种不同介孔结构的多孔SiO2(BMMs)为载体,采用浸渍法负载磷钨酸(HPW)得到负载型磷钨酸催化剂(HPW/BMMs),通过XRD、FTIR、N2吸附-脱附,TG和SEM等表征手段,重点考察了水、乙醇以及丙酮和乙腈等溶剂对HPW/BMMs催化剂结构和性能的影响.结果表明:在不同溶剂中所制备的负载型HPW/BMMs催化剂样品均保持了BMMs介孔结构,但随着HPW负载量的增大,样品的介孔有序度逐渐降低,比表面积和孔体积逐渐减小；低负载量时,样品表面出现新的HPW物种,通过提高HPW的负载量,可抑制该物种的产生.水溶剂对HPW的Keggin结构影响较大,但HPW的晶型保持完好,分散性能较好,负载量为40％的样品(40HPW/BMMs-WA)总酸密度最高,达到1.381 μmol/m2;乙腈溶剂虽更有利于保持HPW的Keggin结构,但晶型破坏较严重,且分散性较差；相比较而言,乙醇和丙酮溶剂的影响则不明显.此外,初步考察了HPW/BMMs样品对废油脂与甲醇催化酯化的降酸效果.
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