The results indicated that the composite oxide composition influences its acid characteristics that TS?1 has higher Br?nsted acid sites and TS?4 has higher Lewis acid sites.

• 实验结果表明；TS系列载体随组成不同；其酸性特征也不一样；TS 1具有较多的B酸位；而TS 4则具有较强的L酸.