二烷基硫代磷酸铵的捕收性能

本文研究了二烷基硫代磷酸铵（ＲＯ）２ＰＳＯＮＨ４（Ｒ＝乙基、丁基、己基、烯丙烯）系列捕收剂对非硫化矿孔雀石、锡石、赤铁矿、白铅矿、方解石和菱锌矿的浮选性能，并就药剂结构与性能关系进行了分析讨论．     

过渡金属硫化物纳米材料化学复合镀层制备方法

介绍了无机类富勒烯(Inorganic fullerene-like,简称IF)与过渡金属硫化物(WS2和MoS2)纳米材料的常用合成技术--固-气与气相反应合成方法; 以及用化学复合镀法制备含有IF-WS2纳米颗粒的Ni-P复合镀层的方法.     

Anionic Regulated NiFe (Oxy)Sulfide Electrocatalysts for Water Oxidation

The construction of active sites with intrinsic oxygen evolution reaction (OER) is of great significance to overcome the limited efficiency of abundant sustainable energy devices such as fuel cells, rechargeable metal–air batteries, and in water splitting. Anionic regulation of electrocatalysts by modulating the electronic structure of active sites significantly promotes OER performance. To prove the concept, NiFeS electrocatalysts are fabricated with gradual variation of atomic ratio of S:O. With the rise of S content, the overpotential for water oxidation exhibits a volcano plot under anionic regulation. The optimized NiFeS‐2 electrocatalyst under anionic regulation possesses the lowest OER overpotential of 286 mV at 10 mA cm^?2 and the fastest kinetics being 56.3 mV dec^?1 to date. The anionic regulation methodology not only serves as an effective strategy to construct superb OER electrocatalysts, but also enlightens a new point of view for the in‐depth understanding of electrocatalysis at the electronic and atomic level.     

Selective oxidation reactions over titanium and vanadium metallosilicate molecular sieves

Selective oxidation reactions like the oxyfunctionalization of alkanes, hydroxylation of aromatics and sulfoxidation of thioethers have been carried out with dilute hydrogen peroxide over titanium and vanadium metallosilicate molecular sieves with MEL topology, viz., TS-2 and VS-2. Though both the catalysts possess similar activities, substantial differences in the product distribution are observed. The oxyfunctionalization of the primary carbon atoms of the alkanes and the oxidation of the methyl substituents of the aromatic hydrocarbons distinguish VS-2 from TS-2. Both the catalysts are found to be equally active in the hydroxylation of phenol, though they possess different activities in different solvents. In general, the oxidations are deeper over VS-2 than on TS-2.     

难处理硫化矿生物湿法冶金研究进展（Ⅰ）微生物氧化工艺技术研究

生物湿法冶金技术与传统矿业氧化工艺相比，成本低、无污染，具有广阔的工业应用前景。本文着重评述了国内外在浸矿微生物、培养基的优化、细菌的接种量、温度、酸度、矿石粒度、矿浆浓度、浸出液中As(Ⅲ)和As(Ⅴ)浓度等方面的研究进展。     

难处理硫化矿生物湿法冶金研究进展Ⅱ氧化机制、强化细菌浸出与生物反应器设计

着重评述了难处理硫化矿的矿物结构、性质及表面特征与各种电化学因素、细菌氧化机制与难处理硫化矿细菌强化浸出、浸矿基因工程菌以及生物反应器等方面的研究进展。指出缩短生物氧化周期长是细菌强化氧化研究的核心；将细菌繁殖和矿物氧化两个过程分开进行的“分离器-发生器”设备设计，是一值得推广的高效生物反应器。     

Nanostructured Metal Chalcogenides for Energy Storage and Electrocatalysis

Energy storage and conversion technologies are vital to the efficient utilization of sustainable renewable energy sources. Rechargeable lithium‐ion batteries (LIBs) and the emerging sodium‐ion batteries (SIBs) are considered as two of the most promising energy storage devices, and electrocatalysis processes play critical roles in energy conversion techniques that achieve mutual transformation between renewable electricity and chemical energies. It has been demonstrated that nanostructured metal chalcogenides including metal sulfides and metal selenides show great potential for efficient energy storage and conversion due to their unique physicochemical properties. In this feature article, the recent research progress on nanostructured metal sulfides and metal selenides for application in SIBs/LIBs and hydrogen/oxygen electrocatalysis (hydrogen evolution reaction, oxygen evolution reaction, and oxygen reduction reaction) is summarized and discussed. The corresponding electrochemical mechanisms, critical issues, and effective strategies towards performance improvement are presented. Finally, the remaining challenges and perspectives for the future development of metal chalcogenides in the energy research field are proposed.     

Study of Leaching of Multimetal Sulphides Through an Interdisciplinary Approach

The leaching of a real multimetal bulk concentrate cannot often be adequately understood on the basis of published literature on simpler and often ideal systems because the process is far too complex, Moreover, the data can become ambiguous in the absence of adequate information on raw materials. Thus any process development work requires a thorough knowledge of the raw material characteristics. This paper describes the use of an interdisciplinary study for a better understanding of ammonia leaching of multimetal sulphides. The techniques employed comprise of X-ray diffraction, thermal analysis, chemical analysis and microscopy.     

钢中氧含量对硫化物夹杂种类和形态的影响

主要研究了钢中氧含量与硫化物夹杂物的种类和形态之间的关系,以控制合适的氧含量,从而提高线材的切削性能,对15个炉次的冶炼过程及其成品取样,分析氧含量对硫化物夹杂的成分、形态及切削性能的影响。结果表明:钢中硫化物与氧化物形成的复合夹杂物的比例会随着氧含量的增加而变大,硅、铝、钙氧化物为核心,外围包裹MnS或CaS的纺锤形或球形复合夹杂对提高切削性能非常有利,应保证成品线材中的氧的质量分数不低于0.0140%。