离子

To economize cost of S03H-functionalized ionic liquids,extend their range of application in chemistry reaction,fifteen of ionic liquids have been synthesized by using methylimidazole,tri-alkylamine,pyridine with industrial materials 1,4-butane-sultone and 1,3-propane sultone as source in this paper.The ionic liquids were synthesized by tri-alkylamine have not been reported and yields are higher than 98%.

为了降低SO_3H-功能化离子液体的成本，使其应用范围更加广泛，本论文利用N-甲基咪唑、三烷基胺、吡啶和廉价工业级原料1，3-丙烷磺内酯、1，4-丁烷磺内酯为原料来源，合成十五种SO_3H-功能化离子液体，三甲胺为原料合成的SO_3H-功能化离子液体还未见文献报道，收率大于98%。

In order to improve the catalytic performances of the chloroaluminate, some organic chemicals with strong electron-donating capacity,such as benzene,alkylbenzene,thioalcohol and thiophene,were introduced into the ionic liquids to modify the ionic liquids.

为改善氯铝酸离子液体的催化性能，向氯铝酸离子液体中引入微量具有供电子能力的苯，烷基苯，硫醇，噻吩等助剂，对离子液体进行改性。

The separation performance of these membranes for thiophenic sulfurs from n-hexane was evaluated. The competitive adsorption of thiophenic sulfurs on these membranes was investigated by varying the loaded ions, the ion concentration and the activation temperature. The regeneration of used membranes was also investigated.

所制得的膜经过负载金属离子改性后用于模拟汽油中噻吩类二元硫化物的分离，研究了不同负载离子种类、负载离子浓度和活化温度对二元硫化物竞争吸附的影响，同时还考察了膜的再生效果。

Silver ion selective electrode was utilized in the potential titrimetric measurements of chloride in water.

用银离子选择性电极做响应电极，以AgNO3滴定水溶液中的氯离子，研究了不同计算方法对终点时AgNO3用量的影响，以及离子强度、有机溶剂等因子对滴定曲线和滴定终点的影响。

Mixture of BMIPF6 ionic liquid and acdic ionic liquid triethyl(propyl-3-sulfonyl ammonium methanesulfonate was prepared.

在BMIPF6离子液体中加入酸性离子液体磺酸丙基三乙基铵甲基磺酸盐，配成酸性的离子液体溶液。

The results indicated that: Tripyrazolone, tripodal and crptands ligand L〓, L〓 and L〓 have good coordination ability with rare earth ions Rare earth ions were coordinated with their oxygen and nitrogen atoms.

结果表明，三脚架结构吡唑啉酮、三酸和穴醚配体与稀土离子有较好的配位作用，它是通过氮原子、氧原子与稀土离子配位的。而穴醚配体与稀土离子配位效果却不好。

It was found that the central metal ion is located at the symmetric center of the molecule. Four oxygen atoms from two H2O molecules and two 〔C6H4(CO2)2〕2- groups are coordinated with copper ion to form a similar planar square coordination configuration. There is one only unidentate coordination bond between O(1) in 〔C6H4(CO2)2〕2- and Cu2+.

结构分析发现，中心金属离子位于分子的对称中心位置，铜离子与来自2个水分子和2个邻苯二甲酸根中的4个氧原子形成近似正方形平面配位，邻苯二甲酸根是以1个O(1)与Cu2+离子形成单齿配体，O(2)和Cu2+之间没有形成配位键。

The results are showed as follow:During the birds were exposed to low temperature,the concentrations of blood calcium,blood chloride and urinous nitrogen ch...

产蛋率与血清总蛋白、无机磷呈弱负相关，与钙离子、镁离子呈弱正相关，与尿素氮、血糖呈中等正相关，与钠离子呈强正相关，与其它指标无明显相关性。

It was described in this paper the effect of vinylene carbonate as additive on rechargeable lithium cell with carbon anode.

本文仅对碳阳极的锂离子二次电池添加剂做探讨。1添加剂的引入及作用锂离子在电解液中和溶剂分子形成溶剂化物，这些分子和锂离子一起插入石墨层，并在石墨层中发生电化学分解引起它的脱落。

One is the interstitial water or zeolitic water, it corresponds to the broad absorptive band at around 3498 cm〓 that results from the association of water owing to the H-bonding. 2 The other is the water coordinated to lanthanum, corresponding to the very strong sharp peak at 3607cm〓, The peaks at around 1600cm〓 were assigned to the bending vibrations of water in LaHCF, two sharp peaks were found at 1601cm〓 and 1624cm〓 respectively, which correspond to two bending vibrations of the interstitial water and the coordinated water respectively in the structure of LaHCF.

通过电化学扫描法，得到了一种有电活性的稀土元素化学修饰电极—铁氰化镧修饰电极；并用循环伏安法进行了表征，比较了碱金属离子Li〓，Na〓，K〓，Rb〓，Cs〓和H〓在膜中的通透性，结果表明氢离子能透过铁氰化镧膜而碱金属离子则不能透过铁氰化镧膜；稳定性研究表明，该修饰电极在纯1.0mol/L HCl溶液中扫描，峰电流迅速下降，到第10圈时峰电流几乎为零，而在混合溶液1.0mol/L KCl+0.10mol/L HCl。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐