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- The sodium is removed with cation exchange resin. 钠用阳离子交换树脂来分离。
- The sodium is removed with cation exchange resin . 钠用阳离子交换树脂来分离。
- Methods of separation of phytic acid by ion exchange resin from rice bran are described. 本文介绍了用离子交换树脂从米糠中提取植酸的方法和条件。
- Cefquinome sulfate was prepared from cefotaxime via 3-substitution,salt formation,and salt exchange with sulfuric acid by anion exchange resin. 以头孢噻肟酸为原料;经3位取代、成盐、离子交换、硫酸成盐;最终得到标题化合物;总收率35.;9%25。
- Dibutyl succinate was synthesized catalyzed by a strong acid cation exchange resin from succinic acid and n-butyl alcohol. 用强酸性阳离子交换树脂催化丁二酸和正丁醇的酯化反应,合成了丁二酸二丁酯。
- The catalyst system used in the synthesis of Maleic acid ester,such as inorganic acid,ion exchange resin and solid acid,was introduced. 本文介绍了国内外马来酸二甲酯合成中的催化剂体系,有无机酸、离子交换树脂、固体酸等。
- 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。
- Conclusion The methods of extraction of alkaloids with alcohol and separation with strong acid cation exchange resin are economy,... 结论乙醇提取、强酸性阳离子树脂提取、分离总生物碱是一种经济简便、效率较高的方法。
- The synthesis of peroxyacetic acid by which A Type positive ion exchange resin and sulfuric acid are used ascatalyst is studied through experiment. 研究了以A型阳离子交换树脂和硫酸为混合催化剂合成过氧乙酸的工艺。
- The intrinsic kinetics of the oligomerization of isobutene was investigated in the presence of strong acid cation exchange resin catalyst. 以强酸性阳离子交换树脂为催化剂,对异丁烯齐聚反应动力学进行了研究。
- Intrinsic kinetics of isobutene(IB) oligomerization was investigated over strong acid cation exchange resin as catalyst in presence of tert-butyl alcohol(TBA). 在强酸性阳离子交换树脂(催化剂)和叔丁醇体系中,对异丁烯(IB)的齐聚动力学进行了研究。
- The borohydride reducing reagent supported by the strong acid cation exchange resin was prepared by the strong acid cation exchange resin reacting with sodium borohydride. 用强酸型离子交换树脂与硼氢化钠作用制备了强酸型离子交换树脂支载的硼氢化还原剂.;探讨了在不同溶剂中制备的还原树脂的还原能力;
- Based on the principle of ion exchange,fibre spinning acid washing water is applied to replace salt and mirabilite,so as to regenerate sodium ion exchange resin. 根据离子交换原理,利用纺丝去酸水代替食盐、芒硝再生钠离子交换树脂,可以去除硬水中的钙离子和镁离子。
- Methods: Extracted by EtOH,purified by 732-positive ion exchange resin. 方法:全草粗粉用乙醇提取,强酸型732阳离子树脂交换纯化。
- About 95% of the exchange capacity was restored with acid exchange,with activity of the regenerated catalyst close to that of fresh catalyst. 失活催化剂经酸交换,约95%25的酸交换容量能够得到恢复,其对醚化反应的活性接近新鲜催化剂的水平。
- The synthesis of tridecane dicarboxylic acid diethyl ester with ethyl alcohol and tridecane dicarboxylic acid as reactants and cation exchange resin as catalyst had been studied. 以强酸性阳离子交换树脂为催化剂,十三碳二元酸与乙醇为原料合成十三碳二元酸二乙酯,考察了影响反应的因素。
- A new process has been developed to synthesize melomic acid from diethyl malonate through hydrolysis reaction and catalyzing by strong acid type cation exchange resin. 该工艺以丙二酸二乙酯为原料,经强酸性阳离子交换树脂催化,通过水解反应制备丙二酸。
- These scale-control methods are ion exchange resin softening ,lime softening, membrance softening, acid feed, scale inhibiter feed, electrostatic water treatment and coating. 这些方法包括:离子交换软化法、石灰软化法、膜软化法、加酸法、阻垢剂法、静电水处理法和涂料法。采用这些方法后可以使清洗的有效期延长、清洗的频率降低。
- A new process has been studied to synthesize malonic acid from diethyl malonate through hydrolysis reaction and catalyzing by 732 type cation exchange resin. 用732型阳离子交换树脂催化水解丙二酸二乙酯制取丙二酸,考察了反应温度、反应时间、水与丙二酸二乙酯的质量比、丙二酸二乙酯与树脂质量比等工艺条件对收率的影响。
- MethodsThe content of sulfate groups was determined by converting heparin sodium into heparinic acid with cation exchange resin and by titrating with sodium hydroxide. 方法将肝素钠通过阳离子交换树脂转变为肝素酸,用氢氧化钠进行滴定,通过电导率的变化确定滴定终点,对硫酸基进行定量分析。