还原的

Studying the chemical balance,energy balance and material balance in the gasification process and probing into the interaction in the gasification process and law of changing offer a theoretical foundation for gasification control. Through the materialization nature of coal, the gasification characteristics of the deoxidize zone are mainly studied (the dynamics characteristics and chemical characteristics). Probing into coz deoxidize mechanism ?establishes the theoretical foundation for the proposition of mark gas;the Principle to adjust and control temperature and applying methods is studied;the physical and mathematical models of underground gasification are set up;A temperature field in the district of gasification is set up and the instance analysis of computer analogue simulation machine has been carried out.

本文通过探讨"三带"基本特征，进而对煤炭地下气化的过程稳定进行研究；研究气化过程中的化学平衡、能量平衡及物料平衡，探讨气化过程中各组分之间的相互关系及变化规律，为气化调控提供理论依据；通过煤炭的物化性质，重点研究还原带的气化特征，分析探讨还原机理，为标志气体的提出奠定理论基础；研究以标志气体为核心的调控升温气化原理及实施方法；建立地下气化的物理模型与数学模型；建立气化盘区温度场，并进行计算机模拟仿真的实例分析。

The drying process of chrome liquor was studied. The structure and property of chrome complex reducing by alcohol were analysed and tokened by many present well-rounded separation and analysis methods such as IR, UV-Vis Spectrum, IEC and pH potentiometry. Application tests of chrome tanning agents were conducted and tanning methods of tanning at high pH were studied. A systematic study was conducted on high alkalinity chrome tanning agents application in leather making process and possibility of clean chrome tanning was discussed.

本文系统地研究了多种小分子醇与重铬酸盐之间的氧化-还原反应，对反应过程进行了认真的剖析；对铬鞣液的干燥过程进行了研究；用红外光谱法、紫外及可见分光光度法、离子色谱法以及pH电位滴定法等多种比较成熟的现代分离分析方法相结合，对醇还原铬配合物的结构与性能进行了分析与表征；对铬鞣剂的鞣革性能进行了应用实验，研究了醇铬鞣剂在高pH值下的鞣制方法，并就高碱度铬鞣剂在制革过程中的应用进行了系统研究，探讨了用其实施清洁化铬鞣的可能性。

This paper introduces the new concept—— electrode potential axis used in the electrochemical redox reaction.

介绍了一种电化学中氧化还原反应的新概念——电极电位轴，它对电池的电动势、极性、电子流动方向以及相关的化学反应的描述很直观，是一种较为理想的判断氧化还原反应的方法。

Part Ⅰ The Research of Chiral Phosphorus Catalysts in the Enantioselective Borane Reduction of Prochiral Ketones ABSTRACT In this paper, the preparation of varied types of chiral phosphorus ligands and their applications as catalysts in the asymmetric borane reduction of prochiral ketones were investigated.

第一部分对映选择的潜手性酮的硼烷还原反应中手性磷催化剂的研究本文研究了多种不同类型的手性磷配体催化剂的合成及其在酮的不对称硼烷还原反应中的应用。

The results show that the surface layer of the air-exposed ZrVFe getter is covered with H20, CO2 and hydrocarbons, both Zr and V exist in the oxidized state, and vanadium oxide starts to reduce at 200℃. The activation results in the enrichment of Zr on the getter surface and the formation of the metallic carbides. H2O, CO2 and hydrocarbons sequentially desorb from the surface with the increase of temperature. H2 is the main gas which desorbs above 200℃ and O2 is not discovered. ZrO2 is reduced to near-metallic or metallic state because O in ZrO2 leaves the getter surface through diffusing into getter bulk.

结果表明：暴露于过大气的吸气剂表面覆盖着H2O、CO2及碳氢化合物等，Zr和V主要以氧化态存在；在吸气剂加热激活过程中，V的氧化物在200℃开始还原；激活过程导致表面近金属态Zr的富集以及部分金属碳化物的生成；随着温度的升高，H2O、CO2及碳氢化合物逐渐从吸气剂表面脱附，在200℃以上，主要脱附气体为H2，整个激活过程未发现O2；ZrO2还原为近金属态或金属态，主要是由于ZrO2中的O通过向吸气剂内部扩散而离开吸气剂表面所致。

In flotation pulp, local cell was present in sulfide particles-water system, sulfide particles-modifer-water system, sulfide particles-collector-water system and grinding medium-water system; Galvanic coupling did in mineral-mineral interaction and mineral-grinding medium interaction, the material of higher potential acted as a cathode , and the lower as an anode.

在磨矿—浮选矿浆中产生的局部电池包括硫化矿物颗粒在水体系、调整剂体系、捕收剂体系和磨矿介质在水体系中的阳极氧化以及氧在同一固体表面上的阴极还原；在磨矿—浮选矿浆中的迦伐尼电偶则存在于硫化矿物—硫化矿物、硫化矿物—磨矿介质之间，其中静电位低的物质发生阳极氧化，氧在具有高静电位的阴极钝化物质上还原。

The traditional technology of iron carbide production exists the problem that the reaction time is too long. The research of adding the additive into the ore of the fluid-bed was carried out in order to find the catalyst of this reaction. It was found out that K2CO3 and CaCl2 can be the catalysts of this reaction. The reacting time and equilibrium data in addition of K2CO3 and CaCl2 were examined and were campared with the contrastive experimental results respectively. The theoretical dynamics analysis also reveals that both K2CO3 and CaCl2 can accelerate the iron carbide forming reaction.

摘 要：传统的碳化铁生产工艺存在反应时间较长的难题，为此通过在流化床入炉矿石中配加部分添加剂的还原实验研究，以寻求该反应可能的催化剂，缩短反应时间，提高碳化铁生产效率和经济效益采用CaCl2和K2CO3作为反应的催化剂，利用反应所测数据，与对比实验相比较，并结合动力学分析，得出CaCl2和K2CO3可以加速碳化铁还原反应进行的结论。

At the same time, the conversion efficiency of NO〓to N〓 was improved by plasma and the selectivity to N〓 formation was enhanced from 1.1% to 1.53%. 4. TPR experiment of simultaneous removal of PM and NO〓 were carried out by plasma/catalysis techniques. The PM was obtained by putting the γ-Al〓O〓 spherules in the diesel exhausts.

选用75％负荷工况挂烟得到的PM的程序升温反应试验结果显示，CO〓和N〓产生在相同的温度范围，表明PM的氧化和NO〓还原同时发生，而且是NO〓和PM的相互作用的结果，并且，PM燃烧得到的程序升温反应曲线是双峰曲线，NO〓在低温段和高温段分别被可溶性有机物SOF和干碳烟DS还原。

In the ultra high vacuum activation, reduction of the vanadium oxide started at a lower temperature (250℃ to 300℃), and the reduction of the titanium oxides started at a higher temperature(300℃).

当吸气剂置于高真空激活时，钒的氧化物在较低的温度(250℃~300℃)开始被还原，钦的氧化物在稍高于钒的温度(300℃)也开始被还原，400℃时表面已经有大量的金属钦的存在，而Zr的氧化物在(100℃~400℃)激活过程中，则没有明显的变化。

Fe was favorable for the hydrogen-producing fermentation system to keep a lower redox potential and this would improve its hydrogen yield due to the enhancement of the metabolic activity of anaerobic bacteria.

单质Fe具有较强的还原能力，可使系统的氧化还原电位维持在较低的水平，对于提高厌氧细菌的代谢活性，提高反应系统的产氢能力，具有较好的促进作用。

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