磷化作用

This article mainly reviewed the discovery and the research course of natural phosphine ,namely,how phosphine coming into being,and whether phosphine being universal existed gas in natural environment such as in aerosphere,biosphere,hydrosphere.

磷化氢是剧毒的、十分活泼的无色气体，具有强的还原性，在光照、空气等作用下，极易转化为磷的其它形态。

It is very difficult to eliminate these influence factors completely by conventional treatment. Surface properties and surface treatment of ultrafine red phosphorus and MMT and their interface properties with polymer matrices were studied in this thesis. The results were characterized by GC, FTIR, XRD, DTA, TG, XPS, UV, SEM, TEM and other physical and chemical methods. The main contents are as following: 1. The study of factors influencing ultrafine red phosphorus's invariability and phosphine liberation indicated red phosphorus undergone oxidation and dismutation reaction in air, and trace ion of iron, copper and nickel fastened water absorption and oxidation, in which the effect of copper ion was the most, while aluminium and zinc ion could slow down red phosphorus'oxidation, and silver ion had the best effect on red phosphorus moisture absorption. Inhibitors such as aluminium hydroxide, magnesium hydroxide, organic phenol and ferrous potassuim cyanide had a good effect on reducing red phosphorus moisture absorption and restraining phosphine liberation.

本文围绕纳微米材料的表面处理及其在高聚物基体中的应用这一主题，系统地研究了超细红磷和蒙脱土两种常见材料的表面特性、表面处理方法及其与高聚物基体的界面特性，通过气相色谱、红外光谱、X射线衍射、差热、热重、X射线光电子能谱仪、紫外光谱、扫描电镜、透射电镜等现代分析仪器以及其它物理、化学方法对实验结果进行了表征和分析，全文主要内容如下： 1、对影响超细红磷安定性的因素以及磷化氢的缓释研究表明：红磷在空气中发生缓慢氧化、歧化反应，微量的铜、铁、镍等金属离子增加了它的吸水和氧化速度，其中铜离子的作用最为明显，而铝、锌等离子减慢了红磷的氧化速度，银离子对减少红磷的吸湿性效果最好。

The bonding strength of adhesive/metal can be affected by surface pretreatments,the effect of various surface pretreatments such as grinding with emery paper,acid etching,phosphating and blasting on the bonding strength by the shearing test are aim to ravel.

利用拉伸剪切实验系统地研究了砂纸打磨、喷砂、酸洗和磷化四种表面处理方法对粘结剂粘结强度的影响，并结合扫描电镜、表面粗糙度测试仪对金属表面形貌的研究，结合能谱测定拉剪试样破坏面的成分数据，详细分析了不同表面处理方法影响界面粘结强度的作用机理。

The effect of the accelerators in phosphating solution on phosphatization was investigated. The reaction mechanism was also studied.

为此研制了一种含硝酸肌和氯酸钠的复合促进剂，考察了复合促进剂所含物质对磷化液磷化效果的影响，对其作用机理进行了讨论。

Therefore, it is of great significance to make thorough study on its distribution characters in marine sediments and the transforming mechanism of phosphine so that evidences would be provided for its function in the phosphorus biogeochemical recycle.

开展磷化氢在海洋沉积物中的分布特征、磷化氢与其他形态磷化物之间的转化机制的研究，对于弄清磷化氢在磷的生物地球化学循环中的作用和地位具有重要的科学意义。

PartⅡ: N-phosphoryl amino acids have many biomimic reactions and the co-participation of the three functional group of phosphoryl, carboxyl and theamino acids side chain are essential for these reactions to occur. To study themechanism and the intrinsic relationship of these three groups will enlight thestudy on the mechanism of enzymatic reaction, the origin of life and otherproblems in the life science.

第二部分：N-磷酰氨基酸的多种仿生化反应是磷酰基、羧基、和侧链基团协同作用的结果，对其反应机理的研究，将对生化反应和生命起源中磷的作用有着重要的意义。

Using phosphoryl chloride as catalyst, 5,6-O-isopropylidene ascorbic acid was prepared by the reaction of Vc and acetone, then the product was treated with phosphoryl chloride to produce Magnesium L-ascorbate-2-phosphate.

在三氯氧磷催化剂作用下，Vc首先与丙酮反应生成5，6-O-异丙叉-L-抗坏血酸，再与三氯氧磷发生磷酰化反应合成得到。

The results show that HAS has excellent effects of corrosion protection and phosphation acceleration , especially has alkali resistance at a lower temperature.

研究了内含羟胺促进剂的磷化工艺，证明在低温条件下羟胺具有优异的促进作用和耐蚀性，且与氯化钠配合使用可大大降低其有效用量；最后采用正交试验确定最佳磷化配方。

CPP-ACP has the ability of promoting remineralization of enamel artificial white spot lesions which can be enhanced by fluorid.The remineralization ability depends on the concentration of calcium phosphate stabilized by CPP-ACP.

CPP-ACP溶液可于体外使脱矿牙釉质发生再矿化，且矿化作用可被氟加强；再矿化作用与CPP稳定的钙磷浓度呈剂量-效应关系。

The aniline HDN was strongly stressed by the presence of quinoline and DHQ and the HDN of quinoline proceeds exclusively via a pathway which involves fully saturated intermediates on the MCM-41-supported nickel phosphides. The HDN activity of nickel phosphide catalyst was dramatically reduced by the presence of H2S and DBT, probably due to the strong adsorption of H_2S and DBT on active sites which inhibited the adsorption of quinoline.

喹啉和DHQ对苯胺的HDN反应有强烈的抑制作用，喹啉在磷化镍催化剂上几乎全部通过完全加氢饱和路径进行反应。H_2S和二苯并噻吩强烈地吸附在磷化镍催化剂活性中心上，阻碍了反应物分子的吸附，从而对喹啉的HDN反应有强烈的抑制作用。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。