The bamboo residues could be liquefied to be biopolyol in the mixed solvent of polyether alcohol and crude glycerol under the catalysis of concentrated sulfuric acid.

在硫酸的催化作用下，竹废料在由聚醚多元醇和粗甘油组成的混合液化剂中可被液化成多羟基化合物。

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By the use of the new nitrating agent, the use of concentrated sulfuric acid was avoided and the reaction was environmental friendly with high atom economy.

该方法通过改变硝化剂，不仅成功地避免了浓硫酸的使用，而且提高了原子经济性，具有良好的环境效益。

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Preparation of methyl acetate from methanol and acetic acid by reactive rectification was investigated with concentrated sulfuric acid as catalyst.

在中试反应精馏塔中以浓硫酸为催化剂进行了醋酸与甲醇反应制备醋酸甲酯的试验。

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