Sulfuric acid immobilized on silica gel is designed as a very useful catalyst for synthesis of 2,3-unsaturated glycopyra......

以溶胶-凝胶法制备了H2SO4-SiO2固体酸催化剂，并对其结构和酸性进行了系统表征．FT—IR和^29Si—NMR结果表明H2SO4和SiO2间存在相互作......