阳离子交换树脂作催化剂合成乙酸乙酯的研究 关键词： 阳离子交换树脂; 乙酸乙酯; 催化剂[gap=833]Key words： cation exchange resin; ethyl acetate; catalyst
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... exchange group - 可交换组[比较相似并常可互 Ion-exchange chromatography - 离子交换层析 cation exchange resin - 阳离子交换尸 ...
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...： 木素磺酸钙;正离子交换树脂;反相悬浮聚合;制备;性能 [gap=1032]Keywords ：calcium lignosulphonate; cation exchange resin; reversed phase suspension polymerization;preparation; characterization ..
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...中医园 关键词】 两面针; 氯化两面针碱; 阳离子树脂; 纯化 [gap=682]Key words： Zanthoxylum nitidum; Cation exchange resin; Nitidine chloride; Purification ...
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storng-acid cation exchange resin 强酸性阳离子交换树脂
cation exchange resin catalyst 阳离子交换树脂催化剂
weakly acidic cation exchange resin 弱酸性阳离子交换树脂
carboxyl type cation exchange resin 羧基型阳离子交换树脂
Strong acid Cation exchange resin 强酸性阳离子交换树脂
weak-acid cation exchange resin 弱酸性阳离子交换树脂
powdered cation exchange resin 粉末状阳离子交换树脂
acidulous cation-exchange resin 弱酸性阳离子交换树脂
strongly acid cation exchange resin 强酸性阳离子交换树脂
The sodium is removed with cation exchange resin.
钠用阳离子交换树脂来分离。
When the fixed bed continuous process is used, the appropriate catalyst is strong acid cation exchange resin.
当采用固定床连续甲酯化反应时，适宜的催化剂为强酸性阳离子交换树脂。
Objective to select the optimum purifying process of total alkaloids in Sophora flavescens by different eluents on cation exchange resin.
目的考察阳离子交换树脂法中不同洗脱剂对苦参总碱的纯化效果，优选最佳纯化工艺。
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