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吸附作用

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Based on the formation of hydrogen bond between polyamide and phenol, phenol can adsorb on the electrode surface.

将这种吸附剂修饰于碳糊电极中,利用其所含有的羰基与苯酚中的羟基可形成氢键这一作用,而把苯酚分子吸附富集于电极表面,然后进行氧化。

They had suppressed the cathodic process of carbon steel electrode. Their inhibition performance was also related with their molecule stereo conformation and electron configuration. Four of bis-(1, 1'-benzotriazoly)-α,β-diamide compounds linked via-CO 〓CO-chain were synthesized and certified by IR and 〓H-NMR. The minimum energy conformations of these compounds were obtained by MM2 forcefield program. The two benzotriazole moiety in BBT1 was more planar than in other compounds. This was beneficial in increasing the inhibition effects of BBT1. In 0.5M H〓SO〓 solution, BBT1 suppressed anodic corrosion reaction. In 3%NaCl solution, BBT1 suppressed both cathodic and anodic corrosion reactions. 1- [ (1'-imidazolly)-methyl] benzotriazole was synthesized by Mannich reaction.

合成了四个通过-CO〓CO-连接的双(1,1'-苯并三唑)-α,ω-二酰胺化合物,采用MM2分子力学程序优化了它们的分子结构,双(1,1'-苯并三唑)-α,ω-二酰胺化合物的缓蚀作用与其分子内两个苯并三唑单元的空间取向有关系,良好的平面性有利于苯并三唑二聚体的吸附和缓蚀作用,苯并三唑二聚体BBT1分子内两个苯并三唑单元近似平行,所以显示出较好的缓蚀效果。0.5M硫酸中BBT1主要抑制铜的阳极溶解的电化学反应;3%NaCl溶液中,BBT1对铜的阳极溶解和氧的阴极还原过程均有抑制作用,相比较而言对阴极过程的抑制作用更大一些。

The performance and mechanism of corrosion inhibitions of POCA were studied bymethods such as weight-loss, electrochemistry, EDS, XPS and quantum chemistry. It isfound that POCA is cathodic corrosion inhibitor, having synergistic effect with HEDP andZn~(2+). The P and O atoms of phosphono have important electron density contribution toHOMO orbital and the electron gross orbital population is bigger than 1, so it is easy toform absorbing location between phosphono and metal resulting in good corrosioninhibition on mild steel.

通过利用失重法、电化学方法、扫描电镜、X光电子能谱、X-射线能谱和量子化学方法研究膦酰基羧酸的缓蚀性能及其机理,发现POCA是一种阴极型缓蚀剂,与HEDP、Zn~(2+)具有优良的协同增效作用;POCA分子中的膦酰基基团的P原子和O原子对HOMO轨道电荷密度贡献较大,且其轨道电子布居数均大于1,因此比较容易通过膦基与金属形成吸附位而对碳钢具有良好的缓蚀作用;对铜合金具有一定的腐蚀作用,但腐蚀作用比HEDP等有机膦药剂要小得多,同时与BTA具有优良的相容性,添加1mg/L的BTA则可以有效地防止铜合金的腐蚀。

The biometallogenesis system of Jinya gold deposits consists of the following procedure: pre-concentration of gold and metallogenic matter in living organisms in Luodian-Danchi rift depositional basin; solution, absorption and concentration of metallogenic matter in organic matter and organic thermal fluid generated from organisms during lithogenesis; migration of gold and metallogenic matter in organic fluid from basin to Lingyun underwater carbonate platform and concentration at its boundary convex (palaeo-blind-mountain) during basin compaction ; metallization due to depth thermal fluid making organic fluid thermal degradation and forming new fluid which riches in gold and sulfur, and the fluid migrating upward and depositing in upside ore-controlling structures because of absorptions by organic carbon and atc.

通过研究金牙金矿作用的生物成矿系统内容为:在早、中三叠世罗甸—丹池裂谷盆地接受沉积时,生物对金等成矿物质就存在预富集作用;在成岩过程中,生物转化为有机质及有机热流体,对生物及沉积物中的金等成矿物质存在溶解、萃取、富集作用;在盆地压实成岩作用中,盆地中有机热流体向凌云水下碳酸盐台地运移,并在台地边缘外凸部位集中,此过程流体携带大量成矿物质,对金等成矿物质存在迁移集中作用;深部热流上侵使有机流体发生降解和释放金的热作用、形成高含金的有机热液,含金热液上移在构造通道中沉积并被有机碳再次吸附,最终形成金矿床,对金存在成矿作用。

It can not only be absorbed on the surface of cement granule such as sulphonated naphthalene superplastic agent, but also produce the steric hindrance effect of branch chain.

它不仅具有磺化萘等传统减水剂吸附在水泥颗粒表面使其表面带电而互斥作用,更具备支链的位阻作用,从而对水泥分散的作用更强,作用时间更持久。

The results of the effect on HSV-2 virulence experiment and the sample-canceling experiment showed that the four sulfated oligosaccharides had no virucidal activity to HSV-2 but inhibition activity.

初步探讨了低聚糖硫酸酯的抗病毒作用机制,由不同时间加药实验结果推测四种低聚糖硫酸酯具有类似的作用机制,可能作用于HSV-2与细胞的吸附阶段,不能抑制病毒在细胞内的复制过程;低聚糖硫酸酯的作用对象为病毒;对病毒毒力的影响实验和撤药实验说明四种低聚糖硫酸酯不能杀灭HSV-2,仅起抑制作用。

In fact, the coagulating mechanism was surface chelating and surface sedimentation. It was said that adsorption was before hydrolysis, then the hydrolysis and sedimentation reaction of the polynuclear hydroxy complexes took place on the adsorption surface, at the same time they counteracted the electric charge of the colloids and suspended substances then adsorbed and bridged the flocculates.

其混凝机理实际上是表面络合及表面沉淀过程,即絮凝剂投入水体后,其最佳混凝形态及其聚集体在一定时间内具有稳定性而保持其原有形态,并很快吸附在颗粒物表面,吸附过程先于水解过程,因带电荷及分子量较高而同时发挥电中和及吸附架桥作用。

Shell gather candy in absorb while getting rid of drinking water harmful substancing , K+、Ca2+、Na+、Mg2+、SO42-、Cl-、HCO-3 ,etc. of adsorbed water, do not influence this density of bottom of the natural water body , and restrain funguses , sterilization function , it is the ideal absorbent drinks aqueous cleaning.

壳聚糖在吸附去除饮用水中有害物质的同时,不吸附水中的K+、Ca2+、Na+、Mg2+、SO42-、Cl-、HCO3-等离子,不天然水体的本底浓度,且有抑菌、杀菌作用,是饮用水净化的理想吸附剂。

Surfactant sorbed on soil increases the adsorption capacity of the soil; however, the microemulsion composed of surfactant and organic materials decreases the adsorption capacity of the soil.

增加离子强度对非离子表面活性剂的吸附无影响,却可略微增加阴离子表面活性剂的吸附。表面活性剂吸附于土壤后对憎水性污染物在土壤/水间的分配行为产生显著作用。

The objective of this study was to compare and differentiate the different removal mechanisms of the dissolved organic matter in the secondary effluent during the granular activated carbon adsorption, horizontal subsurface flow wetland treatment, sand column treatment, laboratory-scale soil aquifer treatment and GAC+SAT.

通过模拟活性炭吸附、砂柱处理、土壤含水层处理、GAC+SAT及潜流式人工湿地处理实验,研究了城市污水处理厂二级出水中溶解性有机物在吸附、生物降解及生物与吸附的共同作用等具有不同DOC去除特点的处理过程中的去除及转化机制。

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