相转移催化氧化法合成己二酸

用聚乙二醇 (PEG -60 0 0 ) ,十二烷基硫酸钠 (SDS)等作为环己醇液相氧化制己二酸的相转移催化剂 ;实验发现 :SDS在高锰酸钾氧化环己醇的反应中具有较好的相转移催化作用 ,改变了反应体系的微环境 ,提高了收率     

正交设计法研究催化氧化环己醇合成己二酸的影响因素

为了寻求一种清洁的合成己二酸的方法,以30%(质量分数)的过氧化氢为氧化剂,磺基水杨酸为配体,Na2WO4·2H2O催化氧化环己醇制备己二酸.利用正交试验的方法对影响己二酸合成工艺的主要因素:催化剂用量、催化剂/配体(moleratio)和反应时间进行了优化.同时对各因素对己二酸的产率的影响进行了分析,得出了一组最佳的合成己二酸的反应条件:环己醇/催化剂为40(moleratio),Na2WO4·2H2O/磺基水杨酸的摩尔比为0 925,反应时间为8 5h时反应效果最好.     

Electrocatalysis method for wastewater treatment using a novel beta-lead dioxide anode

A novel β-PbO2 anode modified with fluorine resin was developed for typical pollutant electrocatalytic degradation and wastewater treatment. Various operating parameters such as applied voltage (3.5-10.5 V), pH (2-6), salinity of the electrolyte (0.5-2 g／L K2SO4) and initial phenol concentration (100-400 mg／L) were investigated to explore the electrocatalytic ability of the anode by taking phenol as sample. A preliminary study on dyeing wastewater treatment by this method indicated that the biodegradability could be increased to suit subsequent biological treatment. The stability of the anode has been proved to be high against acidity. The anode showed promising application for treatment of wastewater, especially of high salinity and high acidity wastewater.     

Oxidizing Cellulose to 2,3-Dialdehyde Cellulose by Sodium Periodate

Study on oxidizing cellulose to 2.3-dialdehyde cellulose by sodium periodate （NalO4） was carried out. The effects of reaction conditions such as pH of solution, temperature, oxidant concentration, oxidation time. the particle size of 2,3-dialdehyde cellulose and alkali treatment temperature on the dialdehyde concentration ot cellulose were investigated in detail, The results show that the aldehyde group content was created while reaction temperature and alkali treatment temperature increased. The most principal factors affecting the aldehyde group content of 2,3-dialdehyde cellulose were found out and the best oxidation conditions were as follows： the pH was 2. the reaction temperature was 45℃. the mass ratio of cellulose to NalO4 was 1/2, the reaction time was 4 h, the alkali treatment temperature was 70℃ and smaller particle size was 0.80 mm.     

难浸金矿石处理研究进展

主要介绍了含砷、铜等难浸金矿石的处理方法并提出了处理难浸金矿石的新思路和新方向。     

高浓度有机废水电催化氧化实验研究

以活性炭—纳米二氧化钛为电催化剂,对甲胺磷溶液进行了电催化氧化降解规律的研究,考察了催化剂量、槽电压、pH值、反应时间等因素对处理效果的影响。实验结果表明,该工艺能有效的去除废水中的有机物,活性炭纳米二氧化钛催化剂的催化效果显著,去除机制主要是电致H_2O_2、·OH对有机物的氧化、降解。     

半导体光催化氧化的机理及实践应用

综述了半导体光催化氧化法的基本原理，概括了影响光催化氧化反应的各个因素及提高反应速率的各种方法，介绍了应用该方法处理水污染物的研究现状，并对光催化氧化法的发展前景及研究方向作了简单阐述．     

怎样做好用高锰酸钾氧化甲苯的实验

本文从甲苯的纯度、反应条件、高锰酸钾用量及酸度讨论了高锰酸钾对甲苯氧化的影响。     

氧化铁的机械力超细化及表面改性

运用机械力化学方法对煅烧法所获得的氧化铁进行超细化和表面改性.研究了多种表面活性剂和助剂用量及对其性能的影响.为获得粒径均一的超细氧化铁,通过在不同球配比和不同球料比的条件下进行实验,得到最佳球配比和最佳球料比.     

生物接触氧化法深度处理定西市马铃薯淀粉加工废水

采用生物接触氧化作为深度处理工艺,进一步去除前期厌氧工艺出水中的有机物。结果表明：在DO＝4 mg／L、HRT＝6 h的最佳工艺条件下,生物接触氧化反应器对厌氧工艺处理后的马铃薯淀粉加工废水有着较好的处理效果,出水COD＜85 mg／L、BOD＜5 mg／L、SS＜35 mg／L、pH 6～pH 9,达到《污水综合排放标准》（GB8978—1996）二级排放标准。