26. The resolution of DL p hydroxyphenylglycine into its D and L isomers was studied by using aromatic sulfonic acid as resolving agent and water as solvent.
27. The etherification of isoamylenes and methanol to form tert all methyl ether (TAME) by benz-sulfonic acid cation exchange resin as catalyst, was studied.
研究了苯磺酸型树脂催化的异戊烯和甲醇的醚化，考查了温度、醇烯比和空速对反应的影响。
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28. These calculations also indicate that the dimer structure is a reasonable model for the associated molecules of methane - sulfonic acid in the liquid phase.
对单体和二聚体的甲基磺酸进行了简正坐标计算，结果表明二聚体结构是液态甲基磺酸聚积态分子的合理模型。
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29. By applying two-step method and orthogonal experiment method, the optimum operation condition for synthesizing sulfonic acid series Gemini surfactant was obtained.
运用两步法与正交试验得出磺酸系双子表面活性剂合成的优化条件。
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30. By applying two-step method and orthogonal experiment method, the optimum operation condition for synthesizing sulfonic acid series Gemini surfactant was obtained.
