共查询到20条相似文献,搜索用时 78 毫秒
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离子水是一种新型的保健饮用水.本文主要对饮用水、离子水的功能和作用进行了概述,阐述了离子水对人类生活和健康的影响,且指出了离子水具有良好的发展、开发和推广的前景. 相似文献
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以聚合前驱体方法制备了Ti/SnO_2平板电极,用SEM和XRD表征了电极表面涂层形貌及结构。以自制Ti/SnO_2电极为阳极,电解催化氧化法处理100 mg/L的含酚废水,试验表明电催化系统能够产生羟基自由基,自制Ti/SnO_2电极具有良好的催化活性和使用寿命。当电流密度为0.01 A/cm2、极板间距为14 mm、初始p H为4,电解催化时间50 min后,出水苯酚去除率几乎为100%。 相似文献
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硝基苯电解还原制备对氨基苯酚的研究 总被引:3,自引:0,他引:3
1 前言对氨基苯酚(简称 PAP)是一种重要的有机精细化工中间体。在制药工业中,它可用于生产扑热息痛、扑炎痛和安妥明等药品;在染料工业中,可用于生产各种硫化染料、酸性染科和毛皮染料。此外,它还可用作橡胶防老剂和照像显影剂等,是一种用途较广的有机化工原料。传统的生产方法是以苯为原料,经氯化、硝化、水解和酸化4个主要步骤制得对硝基苯酚,对硝基苯酚经铁粉还原制得 PAP。该法产品的总收率仅50%左右,产品质量差且三废 相似文献
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流化床电解法处理含铜废水装置的研制 总被引:5,自引:0,他引:5
提出了采用流化床电解法处理含铜废水,对处理装置的性能进行了研究,确定处理含铜废水的最佳电解参数为电流密度0.5~1.2 A·dm-2,电流效率80%以上,其技术指标为铜回收率99%,电耗5~6 kWh·kg-1.实验表明,该装置处理含铜废水效果良好,并能回收金属铜. 相似文献
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主要总结了国内外利用酸性离子液体催化合成生物柴油的进展,介绍了离子液体特性及其催化制备生物柴油的优点。简述了酸性离子液体在酯化和制备生物柴油反应中的应用,对酸性离子液体催化制备生物柴油的研究方向进行了展望。 相似文献
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Three sets of electrodes, namely Pt electroplated Ti (PET) and diffusion annealed PET (DAPET) of plating thickness 3, 5, 7 and 10 μm and thermochemically glazed mixed oxide coated titanium anode (MOCTA-G) were evaluated for their performance, with a view to optimizing the current density conditions for maximum efficiency during the electrolytic destruction of nitric acid. In the acid killing by electro-reduction process, concentration of nitric acid in the high level waste (HLW) from the spent nuclear fuel reprocessing plant was brought down from about 4 to 0.5 M in order to reduce the amount of HLW by subsequent evaporation and to minimise the corrosion in waste tanks during storage of the concentrated waste solution. The electrochemical reduction of 4 and 8 M nitric acid to near neutral conditions was carried out with the above-said anodes and Ti cathode at various cathodic current densities ranging from 10 to 80 mA cm−2. At current densities below 15 mA cm−2 MOCTA-G electrode worked satisfactorily, whereas PET and DAPET electrodes could withstand and function well at much higher cathodic current densities (up to 80 mA cm−2). The life assessment of a 3 μm thick PET electrode at a cathodic current density of 60 mA cm−2 in 8 M HNO3 for a period of 110 h showed no failure. Phase identification of the plated electrodes was done by XRD measurements and their surface morphology was investigated by SEM. 相似文献
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离子液体体系电解铝技术的研究与应用进展 总被引:3,自引:0,他引:3
指出了传统高温电解铝工艺存在的严重问题,在此基础上总结了新型低温熔盐?离子液体的结构和性质,重点综述了近年来离子液体低温电解铝技术的特点、基础研究与应用进展. 通过系统分析表明,离子液体法的反应温度可降至100℃以下乃至室温附近,反应能耗一般低于10 kW×h/kg,同时也减少了CO2, CO和氟化氢等有害物质的排放. 以铝为阳极时,该技术还能应用于低温铝精炼、铝合金与纳米铝的制备,不仅提高了反应效率和产物纯度,也扩展了铝产品种类和研究领域. 这主要归功于离子液体良好的物理化学性能和较强的结构可调性. 未来应进一步加深对体系构效关系的认识,建立电极反应的调控机制,实现技术的集成放大. 相似文献
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《分离科学与技术》2012,47(9-10):2460-2472
Abstract With the continual rise in the cost of fossil fuel based energy, research into economic and sustainable alternatives is of increasing importance. One significant source of increased cost and demand is the consumption of fossil fuels for automotive fuels. While ethanol has received the most attention as a fuel additive; butanol could be a better direct fuel alternative owing to its physical properties and energy value when compared to ethanol. Commercial butanol is nearly exclusively produced from petroleum feedstocks currently; however, some recent interest has begun to refocus on its generation via fermentation. Unfortunately, this production is limited due to the nature of the process and the use of energy-intensive separation techniques. Ionic liquids are novel green solvents that have the potential to be employed as an extraction agent to remove butanol from the aqueous fermentation media. A hurdle to this potential is the limited availability of solubility data for ionic liquids. This research investigates the phase behavior of two ionic liquids, butanol, and water. Additionally, issues related to the implementation of the investigated ionic liquids are discussed. 相似文献
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The electrochemical preparation of NaClO has been widely used for the production of industrial disinfectant. To reduce the cost of electrode preparation using the brushing method, this paper introduces a method for the electrodeposition for RuO2/Ti and RuO2‐IrO2/Ti preparation and NaCl solution electrolysis. The deposition of Ir improves the uniformity and stability of the RuO2/Ti electrode. The optimum preparation conditions and additive concentrations were investigated in detail through the orthogonal experiment. By adjusting the electroplating time, temperature and voltage, the electrode with a high content of available chlorine was synthesized successfully. The physicochemical properties of the as‐prepared RuO2/Ti and RuO2‐IrO2/Ti were determined by XRD, SEM‐EDS, and XPS, and the electrochemical performance and lifetime of the RuO2/Ti and RuO2‐IrO2/Ti was verified via an electrochemical workstation. Uniform and stable RuO2/TiO2 and RuO2‐IrO2/TiO2 were synthesized successfully for the electrolysis of the NaCl solution. 相似文献