查询词典 ion exchange

The samples of free amino acids were prepared from bee-collected pollens of codo-nopsis pilosula, brassica campestris, typha angustifilia and papaver, through extraction with ethanol-water solution and further purified by ion-exchange chromatographic columns.

本文以党参、油菜、水烛及罂粟等4种植物的蜂集花粉进行醇—水提取，经离子交换柱后得到游离氨基酸样品，提取后的花粉残渣以6ml/l盐酸封管水解制得结合氨基酸样品。

A Pd /D005 resin catalyst was prepared by using ion exchange method.Selective hydrogenation for pentadiene in FCC C5 fractions and hydroetherification of tertiary pentanes with methanol were investigated.

摘 要：采用离子交换法制备了Pd/D005树脂催化剂，对催化裂化C5馏分中戊二烯的选择性加氢和叔戊烯与甲醇的临氢醚化反应进行了研究。

The following conclusions have been gotten from a large amount of experiments and determinations: Triiodide, pentaiodide, heptaiodide, nonaiodide, undecaiodide of solid tetra-n-butyl ammonium polyiodides and tetrabutyl ammonium bromide polyiodides can be synthesized by solid phase process which is a economic easy way, while its not suitable for synthesizing solid tetramethyl ammonium polyiodides; Solution polyiodides of triiodide, pentaiodide can be synthesized through the complexation process, and TX-10 is a better complexing agent; Triiodide, pentaiodide, heptaiodide resinic polyiodides were synthesized by ion-exchange of resinifying process, and that is a viable easy way.

在大量实验和分析的基础上，可得到以下结论：用固相法可以合成出碘三、碘五、碘七、碘九和碘十一形式的正四丁基多碘化铵固体高聚碘和四丁基多碘化溴化铵固体高聚碘系列化合物，是制备高聚碘的经济、方便的合成方法，但此法对合成四甲基多碘化铵固体高聚碘系列化合物并不适用；TX-10是合成溶液高聚碘较佳的络合剂，通过其络合作用可以合成出碘三和碘五形式的溶液高聚碘；采用树脂法，通过离子交换，合成出了碘三、碘五和碘七形式的树脂高聚碘，此法简单可行。

Methods The pept ide was separated by ion exchange column chromatography and further purified by r everse phase HPLC,and the molecular weight was determined by tricine gel electro phoresis.

用离子交换柱层析法分离，用反相高效液相色谱法进一步纯化，经聚丙烯酰胺凝胶电泳分析确定相对分子质量。

Metal phosphonate coordination polymers have attracted a great deal of research interest due to their structural diversities and many potential and practical applications in catalysis, ion exchange, intercalation chemistry, absorption, proton conduction, and so on.

金属有机膦酸配位聚合物因其结构上的多样性以及在离子交换、嵌入材料、吸附材料、质子导电材料和催化材料等领域具有潜在的应用前景，已引起人们的广泛关注。

Metal phosphonate coordination polymers have attracted a great deal of research interest due to their structural diversities and many potential applications in catalysis, ion exchange, intercalation chemistry, absorption, proton conduction, photochemistry, and so on.

金属有机膦酸盐配位聚合物因其结构上的多样性以及在离子交换、嵌入材料、吸附材料、质子导电材料、光化学材料和催化材料等领域具有潜在的应用前景，已引起人们的广泛关注。

In chapter 3: the ion-exchange for phytic acid was studied.

第三章：植酸的离子交换。

Keywords phytolacca americana red pigment isolartion and purification ion exchange rein

商陆红色素；分离纯化；离子交换树脂

The process parameters of the separation and purification of shikimic acid from Picea meyeri with ion exchange resin were established.

建立了离子交换树脂分离纯化白扦中莽草酸的工艺条件和参数。

In traditional hydrothermal ion exchange preparating method with Na-montmorillonite as parent clay and aluminum polyorycations as pillaring species, with orthogonal experiments, the optimum conditions in preparation of Na-PILC were obtained.

设计正交实验，找到了合成层柱粘土的最佳工艺条件。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷