有色金属冶炼烟气SO2的回收治理及其资源化

简要说明了在有色金属冶炼过程中回收元素硫的必要性,介绍了火法冶金工艺中回收硫及其资源化的一些方法,简单讨论了不同方法的优缺点;主张综合利用回收硫资源发展市场需求的硫化工产品。     

水热法合成钒钼磷系列多金属氧酸盐

较系统地论述了目前国内外已见报道的采用水热法合成技术制备钒钼磷系列多金属氧酸盐(以下简称VMoPO)的研究现状，归纳了各VMoPO的水热法合成条件，并从反应温度及反应物种等方面初步总结了几点合成规律；概述了VMoPO的组成中抗衡阳离子的种类—4种简单的有机含氮物和两种碱金属阳离子；根据各VMoPO中多阴离子的空间结构特点对其作了分类和较细致的结构描述，并展望了今后水热法合成VMoPO研究工作的主要内容和发展方向。     

水提板栗壳色素对羟自由基和超氧阴离子自由基的清除作用

以水从板栗壳中提取得到板栗壳色素CSPⅡ,并以Fenton反应产生·OH模型、邻苯三酚自氧化反应产生O2-·模型,用紫外和可见分光光度法试验了CSPⅡ对模型中产生的·OH和O2-·的清除作用。结果表明CSPⅡ具有良好的清除·OH作用,且清除作用与色素的浓度呈正相关性,EC50为83.19mg/L;CSPⅡ对O2-·没有显著的清除作用。     

室温离子液体在催化及有机反应中的应用

简述了室温离子液体在氢化反应、氧化反应和酯化反应等有机反应中作为催化剂和溶剂的应用。指出室温离子液体具有熔点低、有较宽的液态范围(大约300℃)、很强的溶解能力、良好的酸性并在很大的范围内可调、几乎没有蒸气压、高极性、较宽的电化学窗口和较好的热稳定性和化学稳定性等独特性能,可以重复使用。     

沸石负载TiO2光催化剂的制备及其性能研究

以钛酸四丁酯和乙醇为原料,采用溶胶-凝胶(sol-gel)法制备以天然沸石为载体的负载型TiO2光催化剂,并利用X射线衍射(XRD)和扫描电镜(SEM)等对其进行结构表征.通过自行设计的光催化反应器,考查溶胶-凝胶体系的组成、焙烧温度及焙烧时间等因素对光催化剂降解造纸废水性能的影响,同时讨论该催化剂的可重复利用性,确定制备天然沸石负载型二氧化钛光催化剂的最佳实验条件:无水乙醇与钛酸四丁酯的体积比为4.0,冰醋酸与钛酸四丁酯的体积比为0.1,水与钛酸四丁酯的体积比为0.15,硝酸与钛酸四丁酯的体积比为0.1,焙烧温度为300℃,焙烧时间为4 h,造纸废水COD去除率可达81.93%.     

凹凸棒石粘土吸附剂处理含镍(Ⅱ)废水的研究

采用凹凸棒石粘土吸附剂对含Ni(Ⅱ)废水的处理进行研究。用粘土和活化土吸附剂处理含Ni(Ⅱ)水样,探讨了不同实验条件如吸附剂用量、灼烧时间、处理时间等对Ni(Ⅱ)吸附率的影响,得出了最佳实验条件。实验结果表明：用该吸附剂在最佳条件下处理含镍量为71mg／L的废水,可使Ni(Ⅱ)的残余浓度远远降低。     

Preparation and characterization of visible-light-driven europium doped mesoporous titania photocatalyst

Pure and different content europium(Eu) doped mesoporous titania were prepared by template method using Eu(NO3)3.6H2O andTi(OC4H9)4 as precursors and Pluronic P123 as template and characterized with X-ray diffraction(XRD),N2 adsorption-desorption measurements,and ultraviolet-visible diffuse absorption spectra.Their photocatalytic activities were studied by photodegradation phenol in water under visible light irradiation.The results showed that Eu doping restrained the growth of grain size and extended the p...     

Preparation of TiO2 Nanoparticles Coated Cotton Fibers at Low Temperature and Their Photocatalytic Activity

TiO_2 nanoparticles coated cotton fiber composite was successfully prepared by using a sol-gel method at low temperature(about 100℃) using tetrabutyl-titanate [Ti(OBu)_4] as raw material.The preparation of the TiO_2 colloid and the composite were described.The properties of resulting materials were characterized by SEM and XRD,the photocatalytic degradation performance was tested using methylene blue(MB) as the target pollutant in aqueous solution.The results showed that the amorphous TiO_2 nanoparticles were distributed evenly on the outer surfaces of cotton fibers,which shows efficient photocatalytic properties when exposed to UV light,the degradation rate of MB reached 95.35% under the conditions of catalyst dosage 2.5 g/L,MB concentration 50 mg/L,irradiation time 120 min,and pH 10,and the photocatalytic activity of TiO_2/cotton fibers remained above 90% of its activity as-prepared after being used four times,the degradation rate of MB could reach 88.78% when irradiation time was 120 min.The photocatalytic degradation of MB could be properly described by the first-order kinetic law.By comparison of the removal rates of MB with and without UV light,it could be affirmed that the disappearance of MB was due to photodegradation rather than adsorption on cotton fibers.     

乳状液膜夹带溶胀的研究

采用界面张力法和聚结电压法测定三种表面活性剂界面张力的时间效应、界面膜的聚结电压以及表面活性剂液膜体系的夹带溶胀率。实验表明,吸附速度慢、聚结电压低的表面活性剂,其夹带溶胀小,因此,认为抑制液膜溶胀的合适表面活性剂是一种吸附速度慢、聚结电压低的聚合物。     

活性水合氧化铁对水中砷（V）的去除

研究活性水合氧化铁对砷(Ⅴ)的吸附行为,讨论不同砷铁比、反应时间、温度、pH值、干扰离子、老化时间等对砷(Ⅴ)吸附的影响,分析其在不同温度下的吸附等温线及其对砷(Ⅴ)的吸附动力学,确定活性水合氧化铁处理含砷(Ⅴ)废水的最佳实验条件.结果表明:Langmuir方程能较好地描述吸附平衡,其吸附动力学符合Lagergen二级方程.干扰离子F-和Cl-离子对砷(Ⅴ)的去除几乎没有影响,而SiO2-3、SO2-4、PO3-4-等离子的存在则抑制砷(Ⅴ)的去除.