In this paper, the strong acid ion exchange resins have been studied as the solid-acid catalyst for the esterification of 4-hydroxybenzoic acid.
本文研究了一种固体酸催化剂—阳离子交换树脂催化剂，用于对羟基苯甲酸的酯化反应。
In this study trimethyl amine was reclaimed from amination wastewater by using 001 hydrogenous strong-acid ion exchange resin. The recovery ratio is more than 90%.
本文采用001氢型强酸性阳离子交换树脂从胺化废水中回收三甲胺，回收率大于90%。
The catalyst system consists of solid strong acid ion exchange resin, organic solvent and copper powder in certain proportion, and the reacted catalyst system may be recovered for reuse.
该催化系统由固体强酸离子交换树脂、有机溶剂和铜粉以一定比例组成，该催化系统在反应后可再回收循环利用。
Ion balance study showed that the precipitation acidity was not decided on acid ion concentrations only, but manly decided on basic ion concentrations which neutralized acid ion in Wuhan city proper.
离子平衡分析表明，武汉城区降水的酸度高低，不仅取决于酸性离子浓度，更重要的是取决于对酸性离子起中和作用的碱性离子的浓度。
The ions exchange between calcium ions and zinc ions would influence the binding ability of zinc ion in D-mannuronic acid units.
钙锌离子交换会影响锌离子与甘露糖醛酸片段的结合。
The ions exchange between calcium ions and zinc ions in L-guluronic acid units would influence the binding ability of zinc ion in D-mannuronic acid units.
钙锌离子交换试验表明钙离子与锌离子在海藻酸古洛糖醛酸片段的离子交换会影响锌离子与甘露糖醛酸片段的结合。
The paper introduced the method of determining the methanoic acid, ethanoic acid and propanoic acid in bio-diesels via ion chromatography.
文章建立了用离子色谱法测定生物柴油中的甲酸、乙酸、丙酸的方法。
That's what's left when formic acid loses a hydrogen ion.
甲酸失去氢离子便形成甲酸盐。
The metal ion and the anion of the mineral acid form an insoluble salt.
金属离子和无机酸的阴离子生成一种难溶的盐。
The electrodes maintain 83 percent of their charge capacity after 40, 000 cycles-in comparison, lead-acid batteries last a few hundred cycles, while lithium-ion batteries typically last for 1, 000.
这种电极可以在4000此循环充电后继续维持83%的能源，仍可在用，而相比之下，蓄电池只能循环充电几百次，锂离子电池可以循环1000次。
A pound of gasoline holds about 35 times more energy than a pound of lead-acid batteries and about six times more than lithium-ion batteries.
一磅汽油的能量约是铅酸电池的35倍，锂离子电池的6倍。
Acid dissolution and metal ion complexing reactions of the organic acids accounted for their stimulation of soil phosphorus release.
有机酸影响土壤磷的释放是酸溶解作用和与金属离子络合反应共同作用的结果。
The treatment of acid wastewater containing heavy metal ion by anaerobe is an advanced technology.
利用厌氧生物法处理含重金属离子酸性废水是一门前沿技术。
Methods of extraction of phytic acid by microwave assist and ion exchange resin from degreasing rice bran are described, and the optimum condition of the method is discussed in this paper.
介绍以脱脂米糠为原料用微波辅助浸提离子交换法从米糠中提取植酸的方法，并讨论了此提取方法的最佳工艺条件。
The principles and characteristics were briefly described on the methods of acid dissolution, alkali dissolution, ion exchange and membrane separation for aluminum salt recovery.
简述了铝盐回收的主要方法，分别为酸溶法、碱溶法、离子交换法和膜分离法，对每一种方法的原理和特点作了介绍。
The metal ion and the an ion of the mineral acid form an insoluble salt.
金属离子和无机酸的阴离子生成一种难溶的盐。
Crosslinkable aromatic resin having protonic acid group, and ion conductive polymer membrane, binder and fuel cell using the resin.
含质子酸基交联性芳香族树脂及使用该树脂的离子传导性高分子膜，粘合剂，以及燃料电池。
In fresh water lake, trace elements belonging to hard acid exist mainly as free ion.
在淡水湖泊中，属于硬酸的元素主要以游离离子存在。
Oscillatory features of the reaction between malonic acid, ferrous o-phenanthroline ion and bromate ion have been studied.
本文研究了丙二酸、邻菲罗啉亚铁离子和溴酸根离子之间反应的振荡现象。
Acid-sensing ion channels (ASICs) are proton-activated receptors that are present in many human tissues and organs, and are particularly abundant in the central and peripheral nervous system.
酸感应离子通道（ASIC）是质子激活的受体，它们存在于很多人体组织和器官中，在中枢和周围神经系统中尤其丰富。
The result shows: The acid protease has good heat, acid and Metals ion stability, and is suitable for usage in feeding enzyme.
实验表明：该酸性蛋白酶制剂具有良好的热稳定性与较强的耐酸性，还具有良好的金属离子稳定性，完全适合作为饲料酶制剂。
Large amount of acid radical ion of acid salt can coexist or not in the solution depends on whether they have proton transfer reaction.
一般酸式酸根离子在溶液中能否大量共存，主要看它们之间能否发生质子转移反应。
Copper and polymerized ferric sulphate were prepared by using scrap iron coils to react with acid wastewater containing copper ion.
利用废铁卷与含铜酸性废水作用制备金属铜和聚合硫酸铁，并用聚合硫酸铁作絮凝剂处理酯化废水。
It has been a good result by using PH-electrometric titration to determine stable constant about copper sulfo salicylic acid complex ion, in comparison with reference data.
本文采用pH 电位滴定法测定磺基水杨酸铜络离子的稳定常数，得到了比较准确的结果（与文献值比较）。
This passage introduced how to develop the new flocculants (PFZSS) for wastewater treatment through adding iron(III) ion zinc(II) ion in the silicic acid and controlling the reactive condition.
本文在聚硅酸中同时引入铁、锌两种金属离子，控制好工艺条件，研制新型水处理药剂——聚硅酸硫酸铁锌（PFZSS）。
The solid sialic acid was obtained by lyophilization after counteraction, filtration and separation using ion exchange chromatography.
水解液中和过滤后，用离子交换色谱分离与冷冻干燥得到唾液酸产品。
Lithium ion battery, flow cell, sodium sulfur battery, lead acid battery, lead carbon battery, zinc bromine battery and other chemical energy storage products.
锂离子电池、液流电池、钠硫电池、铅酸蓄电池、铅碳电池、锌溴电池等化学储能产品。
The analytical method of iodine in wet process phosphoric acid by the ion selective electrodes is studied in this paper.
采用碘离子选择电极法建立了一种分析测定湿法磷酸中碘含量的方法。
The analytical method of iodine in wet process phosphoric acid by the ion selective electrodes is studied in this paper.
采用碘离子选择电极法建立了一种分析测定湿法磷酸中碘含量的方法。
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