Comparing with SO42/TiO2, the acidic strength and anti-moisture ability of SO42/TiO2-SiO2 catalyst were decreased.

• 与SO_2~(2-)/TiO_2相比,SO_2~(2-)/TiO_2-SiO_2催化剂的酸强度略有降低、反应物中水蒸汽对催化剂活性的负面影响增加。