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Degradation of Highly-Chlorinated Benzenes by Nanoscale Iron and Palladized Iron in Aqueous System

LI Jie,WANG Fang,YANG Xing-lun,GU Cheng-gang,ZHANG Yin-ping,JIANG Xin,

环境科学 , 2011,
Abstract: Adsorption and degradation of three typical chlorinated benzenes(CBs) were evaluated using commercial nanoscale Fe(nFe) and synthesized palladized Fe(Pd/nFe) via batch experiments.The results showed that the adsorption capacity exhibited significant difference between various conditions,of which its maximum adsorption amount reached with Tris-buffered solution of pH = 6.8.1,2,4,5-TeCB can be dechlorinated by Pd /nFe efficiently within 20 hours.The degradation rates were 75% and 92% in pure water system and ...
Determination and QSPR Study on the Electrochemical Reduction Cha-racteristics of Chlorinated Aromatic Compounds

Wei Dongbin,Hu Hongying,Kosei Hiramoto,Koichi Fujie,

环境科学 , 2003,
Abstract: The relationship between the reduction characteristics and molecular structure of 87 chlorinated aromatics including naphthalenes, biphenyls, benzenes and phenols was studied by using quantitative structure property relation ship technique. The result indicated that there was significant correlation between reduction potential and the energy of the lowest unoccupied molecular orbital and the number of chlorine atoms in molecule. The study threw more light on the nature of reduction process, and provided valuable basic data for designing and optimizing treatment process.
Photocatalytic degradation of chlorinated ethenes  [PDF]
Kyoichi Oki,Sachiko Tsuchida,Hiromasa Nishikiori,Nobuaki Tanaka,Tsuneo Fujii
International Journal of Photoenergy , 2003, DOI: 10.1155/s1110662x03000059
Abstract: Degradation of three chlorinated ethenes, trichloroethylene, trans-1,2-dichloroethylene and cis-1,2-dichloroethylene, by UV-light irradiated TiO2 catalyst prepared by the sol-gel method in dry air at ambient temperature have been examined by using FTIR measurement. The chlorinated ethenes rapidly decomposed to produce dichloroacethyl chloride, CO, HCl, and COCL2. For trans- and cis-1,2-DCE systems isomerization to each other is found to be the first step of the degradation. The C = C bond of the chlorinated ethenes interacts directly with TiO2 site and, consequently, the degradation results in several products on the catalyst surface in these systems.
Scaling in polymers: I. The ortho-fused spiral-benzenes  [PDF]
H. G. Miller,C. J. H. Schutte,P. H. van Rooyen
Physics , 2009,
Abstract: Analogous to a model that predicts the linear scaling of the binding energy of a nucleus from the number of nucleons, a simple model was developed to account for the observed linear variation of the quantum-chemically computed total electronic energy of the fully-optimized structures of a homologous series of polymers. This model was tested with both ab-initio DFT and molecular mechanics methods on the ortho-fused spiral-benzenes. Both methods predict linear scaling of total polymer energy with increasing number of repeating units added. Since this is also the case for the linear ortho-fused zigzag-benzenes and other polymers, it is postulated that the model is applicable to polymers in general. It may, therefore, be used to predict physical properties of long-chain polymers.
Highly selective synthesis of (E)-alkenyl-(pentafluorosulfanyl)benzenes through Horner–Wadsworth–Emmons reaction
George Iakobson,Petr Beier
Beilstein Journal of Organic Chemistry , 2012, DOI: 10.3762/bjoc.8.131
Abstract: Diethyl 2-nitro-(pentafluorosulfanyl)benzylphosphonates, available by the vicarious nucleophilic substitution reaction of meta- and para-nitro-(pentafluorosulfanyl)benzenes and diethyl chloromethylphosphonate, undergo Horner–Wadsworth–Emmons reaction with aldehydes in the presence of potassium hydroxide in acetonitrile at ambient temperature to give (E)-2-nitro-1-alkenyl-(pentafluorosulfanyl)benzenes in good yields and high stereoselectivities. Follow-up transformations of the primary products provided (E)-1-alkenyl-(pentafluorosulfanyl)benzenes and 2-(2-arylethyl)-(pentafluorosulfanyl)anilines.
L-proline catalyzed efficient and clean synthesis of polysubstituted benzenes in the ionic liquid [bmim]PF6
Jain Shubha,Keshwal Balwant S.,Rajguru Deepika
Journal of the Serbian Chemical Society , 2012, DOI: 10.2298/jsc111211067j
Abstract: A clean and efficient synthesis of polysubstituted benzenes has been developed via sequential vinylogous Michael addition and nucleophilic cyclization reactions of arylethylidenemalonodinitriles with arylidenemalo-nodinitriles in ionic liquid [bmim]PF6 catalyzed by L-proline.
响叶杨(populusadenopoda)种子的形成及其寿命  [PDF]
南京林业大学学报(自然科学版) , 1984, DOI: 10.3969/j.jssn.1000-2006.1984.01.014
Abstract: <正>用显微技术及软x射线摄影,定位观察响叶杨种子发育过程中的形态变化与胚胎发育的对应关系。根据观察、试验的结果,讨论了环境条件与种子寿命的关系;还测定了响叶杨种子寿命的变化规律及其影响因素,探索延长这种子寿命的方法。
动物学研究 , 1995,
Abstract: 1994年10月15日马中翼等人在云南省泸水县的老窝捕获到1只雄鸟,经中国科学院昆明动物研究所鉴定为黄腰响蜜lie,为我国鸟类科的新记录。标本保存在中国科学院昆明动物研究所鸟类标本室。科的特征体形较小。嘴形似雀,短而粗实,上嘴稍弯曲;尾羽12枚;翅形长而尖,仅具9枚初级飞羽;脚呈对趾型,第2、3趾向前,第1、4趾向后,似啄木鸟。
响蜜lie科的新记录  [PDF]
动物学研究 , 1995,
Abstract: 1994年10月15日马中翼等人在云南省泸水县的老窝捕获到1只雄鸟,经中国科学院昆明动物研究所鉴定为黄腰响蜜lie,为我国鸟类科的新记录。标本保存在中国科学院昆明动物研究所鸟类标本室。科的特征体形较小。嘴形似雀,短而粗实,上嘴稍弯曲;尾羽12枚;翅形长而尖,仅具9枚初级飞羽;脚呈对趾型,第2、3趾向前,第1、4趾向后,似啄木鸟。
不同基质对“珍珠”南瓜叶绿素及NR 和 POD 活 性 的 影 响  [PDF]
武英霞,沈 军,杨和连,李新峥,刘振威
北方园艺 , 2010,
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