Producing and the application of strong reduced solvent by bipolar membrane electrolyzer

本研究为将双极膜用作强还原剂--铬(II)、钒(II)、钛(III)的电解液进行了实验室研究。从理论上比较了离子交换膜和双极膜电解法在氯离子含铬水溶液中制备强还原性溶剂的可行性。阐述了用双极膜替代离子交换膜的优点。经小试验证，该电解槽是一种生产强还原溶剂的电解槽。通过对双极膜电解槽生产过程中的钛溶液作为强还原溶剂的应用研究，进行了以下四个方面的研究。研究了酸性硫酸盐溶液中钛(III)对黄铜矿的还原分解作用。IT…另据了解，从CuFeS_2(黄铜矿)还原到用Ti(III)溶液通过Cu5FeS_4(斑铜矿)两步还原浸出黄铜矿到Cu2S(硫胞)而不还原为铜。在制备纳米二氧化钛的过程中，采用以尿素为沉淀剂的均匀沉淀法获得了粒径约0.7μm的均匀球形粉末，晶化温度低至100℃左右。在浸渍法和电解氧化法中，两种薄膜都是锐钛矿型的二氧化钛。并且薄膜在热处理时呈现出干涉色，在酸性和碱性条件下具有很强的附着力。分别合成了钛酸钡和钛酸锌，并作为钛酸盐进行了研究。由于以低价态溶液中的强还原溶剂钛(III)为原料，与目前的方法相比，可以在较低的温度下合成锐钛矿型、颗粒状和钛酸盐的二氧化钛薄膜。然而，绩效评估留在了未来的问题上。较少

This research is basic research for using bipolar membranes as electrolyzers of strong reducing solvents, Cr(II), V(II) and Ti(III) on the laboratory scale. Ion exchange membrane and electrolytic process using bipolar membrane were compared in theory on chloride chromous aqueous solution manufacturing of the strong reducibility solvent. The advantage of applying bipolar membrane by substituting ion exchange membrane is described. It was verified that it was useful as a producing electrolyzer of strong reducing solvents in the laboratory scale. Excellence of the bipolar membrane and a performance within specification were confirmed.The following four researches were attempted by using Ti(III) solution of the producing with the bipolar membrane electrolyzer as an application research on strong reducing solvents. Each result is individually described as follows.The reductive decomposition of chalcopyrite in aqueous solution was investigated by using Ti(III) in acidic sulfate solution. It … More has been understood for reduction to progress from CuFeS_2(chalcopyrite) to the reduction leaching of chalcopyrites with Ti(III) solution by two steps to Cu_2S(chalcocyte) through Cu_5FeS_4(bornite), and not to be reduced to copper.In the producing of the TiO_2 particulates, a uniform spheroidal powder of grain diameter about 0.7μm is obtained by using the uniform precipitation method which uses the urea for the precipitation agent, and the crystallization temperature is low about 100℃.In the dipping method and the electrolysis oxidation method, both films are TiO_2 of the anataze type, and the film is presents the interference color when heat-treating is given, and an excellent film of strong adhesion in the acid and the alkali.Two kinds of syntheses of the barium titanate and the zinc titanate and were done additionally as a titanic acid salt. The film of TiO_2 of anataze type, particulate, and the titanates can be synthesized at the low temperature compared with the method so far because strong reducing solvent Ti(III) which is the solution in the state of a low valence is made a raw material. However, the performance evaluation was left as a problem in the future. Less