1、

Acetylsalicylic acid was synthesized from salicylic acid and acetic anhydride catalyzed by strong-acid cation exchange resin.

以水杨酸和乙酸酐为原料、强酸阳离子交换树脂为催化剂合成阿司匹林.

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2、

Methods Alcohol and strong acid cation exchange resin were used in the extraction and separation.

方法醇类溶剂提取法、离子交换树脂分离法.

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3、

Eastman-AQ is a new kind of polymer ( ester sulfonic acid ) cation exchanger.

Eastman -AQ (AQ-55D,AQ-29D )是一种新的聚合物 ( 磺酸酯 ) 阳离子交换剂,涂于玻碳电极上,形成的膜具有强的附着力、高的选择性、良好的离子交换及防污性能.

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4、

( iii) a coordination bond, formed by ammonia atom with a surface cation ( Lewis acid site).

与催化剂表面的阳离子(即表面Lewis位)形成共价结构。

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5、

Grasping the measuring method of total exchange capability of acid cation resin.

掌握强酸性阳树脂总交换容量的测定方法.

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6、

The reaction adopted strong-acid cation exchange resin catalysed phthalic anhydride and alcohol.

采用强酸性阳离子交换树脂催化邻苯二甲酸酐与正丁醇的酯化反应.

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7、

Taking succinic acid, alcohol as material, cation exchange resin as catalyst the diethyl succinate is synthesized.

论述了以丁二酸 、 无水乙醇为原料, 离子交换树脂,催化合成丁二酸二乙酯的新工艺.

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8、

Cation exchange resin ( strong acid type ) is used as esterification catalyst.

用强酸型阳离子交换树脂作催化剂合成乙酸乙酯.

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9、

The reaction adopted strong-acid cation exchange resin catalysed phthalic anhydride and butyl alcohol.

催化邻苯二甲酸酐与正丁醇的酯化反应.

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10、

Grasping the measuring method of working exchange capability of acid-cation resin.

掌握强酸性阳树脂工作交换容量的测定方法.

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11、

Effects of Simulated Acid Rain on Exchangeable Cation Transplant and Acidifying Potential in Litchi Orchard Soils

模拟酸雨对果园土壤交换性阳离子迁移及其对土壤酸化的影响

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12、

Weak acid cation exchanger isolation and molecular identification of infectious bursal disease virus strains

三株鸡传染性法氏囊病毒弱毒株的分离与分子鉴定

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