查询词典 ion exchange

The research results also show that the electrical catalysis of the electrodes can be enhanced evidently when the electrodes are added some Nafion latex,but it also found that the Nafion latax made by different method has the different effects on the discharge voltage and current density of the ion exchange membrane fuel cells.

实验结果还表明，在电极中加入适量的Nafion乳液可显著地提高电极的电催化反应活性，同时也发现添加不同方法配制的Nafion乳液，对燃料电池放电性能的影响也有一定的差别。

Methods Extract α 1 AT from FIV 1,precipitate with PEG,purify by ion exchange chromatography and lyophilize.

FIV 1抽提液经PEG沉淀，离子交换，病毒灭活、超滤、除菌、分装，冻干制备α1 AT制剂。

The accelerative effects of mixed organic acids of malonic and other organic ligand acids on mass transfer of U in ion exchange are studied by elution development.

本文用流洗色谱法研究了丙二酸和其他有机酸组成的混合有机酸对铀酰离子在离子交换树脂中的加速传质作用。

Secondly, the silver based catalysts modified by phosphorus, zirconium, zinc, potassium and so on using molecular sieve as carrier, which were produced by ion-exchange method, had also good catalytic performance for 1,2-propane glycol oxidation to methylglyoxal. The conversion of 1,2-propane glycol and the selectivity of methylglyoxal were both high, and the impurity such as formaldehyde and acetaldehyde in the product is little. At the condition of the temperature 300 ℃, the molar ratio of oxygen to 1,2-propane glycol 1.7:1, the space velocity 6000h~(-1), and the concentration of 1,2-propane glycol 70wt%, the conversion of 1,2-propane glycol is 90% and the selectivity of methylglyoxal is 45% on the Ag-P catalyst.

其次对采用离子交换法制备的负载在分子筛上的银系催化剂进行了研究，发现此催化剂在助催化剂磷、锆、锌、钾等的作用下对丙二醇的低温氧化脱氢具有很高的活性，可以得到较好的丙酮醛的收率，并且产物中的甲醛、乙醛副产物的量比较低；经过对Ag-P催化剂上反应条件的考察，发现当温度为300℃、氧醇比1.7：1、空速6000h~(-1)、丙二醇浓度为70wt%时，丙二醇的转化率为90%，丙酮醛的选择性为45%。

This result laid a foundation of theory and experiment for the development of mordenite sorbent to separate ethene.NaY was firstly modified using two ion-exchange and two calcinations method which was heated by microwave.

首次采用微波加热二次离子交换二次焙烧的方法改性NaY分子筛，制得CeY、CeY、CuY、AgY、KY、MgY和SrY，并用于吸附噻吩和苯，其中CeY分子筛对噻吩具有最好的吸附容量和选择性。

The polysaccharides were extracted from Morinda officinalis How by pretreatment of cellulose,and were further purified by ion exchange and gel filtration chromatography.

采用纤维素酶水解方法提取巴戟天粗多糖，并通过离子交换和凝胶过滤层析对得到的粗多糖进行了分离纯化。

The DielsAlder reaction of myrcene and acrolein over ZnCl2/NaY prepared by solidstate interaction under microwave irradiation, conventional heating physical mixture, and over ZnNaY prepared by ion exchange in solution was studied.

比较了微波固相法、普通加热法和简单混合法制备的ZnCl2／NaY及溶液离子交换法制备的ZnNaY在月桂烯与丙烯醛DielsAlder反应中的催化性能，发现微波固相法制备的催化剂表现出最高的环加成选择性和区域选择性。

Through ethanol deposition, organic solvent extraction, then active carbon, 732 positive ion-exchange resin and silica gel columniation chromatography, cream nematocide substance have been obtained. Inspection the substance by TLC, UV-Visible Spectrophotometer have been deduced singleness component, and it's pure 97.38% by HPLC. The substance could use for structure analysis and character identify.

活性物通过无水乙醇沉淀，有机溶剂萃取，活性炭柱、732型阳离子交换树脂柱及硅胶柱层析后，经硅胶薄层层析、紫外－可见光检测和高效液相色谱检测，其纯度达97.38%，可用于物质进一步结构分析及性质测定。

Organophilic montmorillonite is obtained by the ion exchange of organic ammonium compound and its interlayer space changes from 1.31nm to 2.01nm.

通过阳离子交换的方法将蒙脱土进行有机化处理，使蒙脱土的片层间距从原来的1.31nm增加到2.01nm。

The new opinion and mechanism that the simultaneously adsorption of complex pollution of both organic and heavy metals will be achieved on soil modified with amphoteric surface modifying agent, which have both charged group and organophilic group on one ASMA molecule, were proposed at first time, and its rationality was testified at the same time; The 50% was the critical CTMAB modifying ratio of soil CEC at which the organophilic bond modifying mechanism was emerged; The thermodynamic characteristics of adsorption of OPT and HMP on OMS were discovered ; The study revealed the surface peculiarity of OMS that the modifying agent were distributed at uneven scatter mode and multi-characters surface were coexisted on surface of OMS, revealed the adsorption peculiarity of OMS that multi-mechanisms were coexisted, confirmed the unequal charge amount modifying mode of OMS in which dual-modifying mechanism of both ion exchange and OPB were processed at the same time, and confirmed that the adsorption hobby to CTMAB was higher than that to Ca2+ on Lou soil.

首次提出了用两性表面修饰剂对土壤进行修饰改性，利用两性表面修饰剂所具有的荷电基团和疏水基团达到对土壤中有机、重金属污染物同时吸附的思路和机理，并通过实验证实了所提设想的合理性；发现了土壤CEC值的50%修饰比例是CTMAB开始显现以疏水键机制对土土样表面进行修饰的临界点；揭示了有机修饰改性土对有机物、重金属吸附过程的热力学特征，填补了该项研究工作的空白；阐明了修饰剂在改性土表面呈分散态的非均匀分布，改性土表面具有不同性质表面共存的表面特征和对污染物多机制共存的吸附特征，确定了阳离子表面修饰剂在土表面的修饰是一种离子交换和疏水键结合两种机制相伴并行且为非等电荷量交换的修饰反应模式，以及土具有对CTMAB的吸附偏好性远大于对钙离子吸附偏好性的特征。

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