涤棉仿丝绸的酸减量和氧化减量处理

采用酸减量和氧化减量对涤棉混纺织物进行仿丝绸处理，分析比较两者的影响因素和处理后的织物性能。结果表明，两种方法均可使织物获得较好的仿丝绸效果，但两种方法中，达同一减量率时，织物的性能差异较大，仿丝效果不同。     

丙烯环氧化合成环氧丙烷技术的研究进展

综述了丙烯催化环氧化合成环氧丙烷(PO)技术的研究进展,包括以分子氧为氧化剂、H2O2为氧化剂、原位合成H2O2为氧化剂和有机过氧化物为氧化剂的催化氧化法。同时,对各种催化反应工艺、催化剂和催化反应机理进行了讨论,并对PO的绿色催化合成技术的前景进行了展望。丙烯一步环氧化生产PO工艺具有流程简单、副产物少和环境友好等优点,是PO生产工艺的未来发展方向,其中TS-1分子筛催化丙烯与H2O2一步环氧化工艺具有较大的竞争力,极有可能实现工业化;而丙烯一步气相环氧化技术极具潜力,但目前催化剂的性能离工业化仍有一定距离。     

四氧化三锰中总锰含量测定

用过硫酸铵作为氧化剂对四氧化三锰中总锰的含量进行测定，并对测定方法的准确度和精密度进行了讨论和评价。     

Inactivation of Escherichia coli using UV/Ag?TiO2/O3‐mediated advanced oxidation: application to ballast water disinfection

BACKGROUND: Ballast water discharge from ships is regarded as one of the four major risk factors that threaten global marine environmental safety, and ballast water treatment is vital to prevent the introduction of potentially invasive species. The UV/Ag? TiO₂/O₃ process has been investigated for its potential use for ballast water treatment using Escherichia coli (E. coli) as an indicator bacterium. Inactivation curves were obtained, and the occurrence of oxidants was studied. RESULTS: Compared with individual unit processes with ozone or UV/Ag? TiO₂, the inactivation of E. coli by the combined UV/Ag? TiO₂/O₃ process was enhanced, and the inactivation efficiency was improved with increasing ultraviolet intensity and ozone dose. The initial total residual oxidant (TRO) concentration was positively correlated with ozone dose, and resulted in faster decay rate for lower initial concentration. Persistence of TRO resulted in a cumulative bacteria mortality in the effluent. CONCLUSION: The UV/Ag? TiO₂/O₃ process was found to be efficient for E. coli inactivation in simulated ballast water. Copyright © 2011 Society of Chemical Industry     

The transition from single to double oxide growth during the high temperature corrosion of a pure metal by a single oxidant

This paper considers the effects of a layer of lower compound on the overall corrosion kinetics in a single oxidant of a pure metal forming two different compounds. It is shown that if both compounds grow together from the start, the presence of the inner layer can only yield an increase of the overall parabolic rate constant compared to the growth of the higher compound only. The kinetics of direct growth of the higher compound on the metal are then examined and compared with a two-stage process involving initial formation of the higher compound directly on the metal, followed after some time by the appearance of an inner layer of the lower compound. The overall rate constant for the second stage may be larger or smaller than its initial single-layer value, depending on the defect nature of the higher oxide.     

原位投加氧化剂去除河道污染底泥黑臭的研究

针对城市河道底泥硫化物和有机污染严重的特点,以对深圳某河道污染底泥的处理为研究对象,考察原位投加硝酸盐及其与两种辅助氧化剂联合投加去除污染底泥黑臭的效果。结果表明,投加硝酸盐及硝酸盐与辅助氧化剂A联合投加均能有效去除污染底泥黑臭。硝酸盐与辅助氧化剂A联合投加对底泥总有机碳降解效果更佳,底泥硝酸盐残留量也更高,除臭效果更持久,能有效处理污染底泥,可为城市河道污染底泥的综合治理提供借鉴。     

城市感潮河道污染底泥原位处理小试研究

针对城市河道底泥硫化物和有机污染严重的特点,以深圳某河道污染底泥为研究对象,考察原位投加氧化剂去除污染底泥黑臭的效果。结果表明,投加过氧化钙和硝酸钙均能有效去除污染底泥黑臭。其中,酸可挥发性硫化物（Acid Volatile Sulfide,AVS）的去除率均超过95％。投加氧化剂原位处理污染底泥有助于底泥颗粒的吸附凝聚,颗粒比表面积变小,可避免污染物质的附着和累积。两者联合投加对底泥总有机碳（Total Organic Compounds,TOC）降解效果更佳,投加45天后TOC去除率为18．0％,大于过氧化钙和硝酸钙单独投加时的8．1％和12．9％,同时底泥硝酸盐残留量也更高,除臭效果更持久,表明过氧化钙和硝酸钙联合原位投加可有效修复污染底泥。     

不同氧化剂制备玉米淀粉胶粘剂的比较研究

以不同的氧化剂KMnO4,NaClO和H2O2分别制备了玉米淀粉胶粘剂，对氧化剂，糊化剂，交联剂，水量等进行了条件试验，测试了部分产品性能，并进行了比较研究。     

Oxidative coupling of methane by carbon dioxide: a highly C2 selective La2O3/ZnO catalyst

In the oxidative coupling of methane by carbon dioxide, La₂O₃/ZnO catalysts were found to have high C₂ selectivity and good stability. The coupling selectivity on La₂O₃/ZnO is about 90%, which is much higher than that on pure La₂O₃ or ZnO. The consumption ratio of carbon dioxide to methane is approximately one. X-ray diffraction analysis reveals that the structural forms of the oxides are unchanged during the reaction. The reaction mechanism for C₂ formation is discussed.     

中性蒸馏同时分离水中的苯酚和苯胺的可行性研究

实验结果表明,水样的pH控制在6.0～8.0范围,可以同时蒸馏水中的苯酚和苯胺,且蒸馏回收率为98%～103%;有取代基的酚类和芳胺在中性蒸馏条件下的回收率,随结构不同回收率不同。中性蒸馏时,氧化剂KClO4,KClO3,KNO3,H2O2(100mg/L以下)的存在对苯酚和苯胺氧化作用很小,误差不超过±5%,KMnO4和K2S2O8对苯酚和苯胺中性蒸馏时,氧化作用比较显著。合成水样经中性蒸馏后,紫外四阶导数法的测定结果与国家环保局推荐方法的测定结果之间精密度和准确度均无显著差异。