A lanthanum chelate possessing an open-channel framework with water nanotubes: properties and desalination

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	A lanthanum chelate possessing an open-channel framework with water nanotubes: properties and desalination
	Chen, Mao-Long ; Guo, Yi-Chao ; Yang, Fang ; Liang, Jin-Xia ; Cao, Ze-Xing ; Zhou, Zhao-Hui ; Cao ZX(曹泽星)
刊名	http://dx.doi.org/10.1039/c3dt52837e
	2014
关键词	METAL-ORGANIC FRAMEWORK NORM-CONSERVING PSEUDOPOTENTIALS CARBON-DIOXIDE CAPTURE SEAWATER DESALINATION PURIFICATION TECHNOLOGY
英文摘要	National Science Foundation of China [21133007]; Ministry of Science and Technology of China [2010CB732303, 2011CB808504]; PCSIRT [IRT1036]; A new type of thermally stable chelate {La(H2O)(4)[La(1,3-pdta)(H2O)](3)}(n)center dot 12nH(2)O (1) [1,3-H(4)pdta=CH2[CH2N(CH2CO2H)(2)](2)] with an open-channel shows significant and unusual solvent transport properties and demonstrates a use for low-pressure desalination, which is constructed by cheap and available lanthanum salt and 1,3-propanediaminetetraacetate. The chelate could be converted reversibly to its trihydrate {La(H2O)(4)[La(1,3-pdta)(H2O)](3)}(n)center dot 3nH(2)O (1a), dehydrated product {La(H2O)(4)[La(1,3-pdta)-(H2O)](3)}(n) (1b) and ethanol adduct {La(H2O)(4)[La(1,3-pdta)(H2O)](3)}(n)center dot 3nH(2)O center dot 3nEtOH (1c). The latter nano-confined ethanol shows a remarkable downfield shift (Delta delta = 6.0 ppm) for the methylene group in the solid C-13 NMR spectrum compared with that of the free EtOH. Crystal 1 with a regular hexagonal appearance can be used directly for saline water desalination on a small-scale at an ambient temperature, demonstrating a low energy consumption and environmentally friendly method. This is attributed to the 10.0 angstrom hydrophobic open-channel containing water nanotubes (WNTs, Phi = 4.2 angstrom). The nano-confined WNTs can be removed at a low temperature (45 degrees C).
语种	英语
出版者	ROYAL SOC CHEMISTRY
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/89453]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Chen, Mao-Long,Guo, Yi-Chao,Yang, Fang,et al. A lanthanum chelate possessing an open-channel framework with water nanotubes: properties and desalination[J]. http://dx.doi.org/10.1039/c3dt52837e,2014.
APA	Chen, Mao-Long.,Guo, Yi-Chao.,Yang, Fang.,Liang, Jin-Xia.,Cao, Ze-Xing.,...&曹泽星.(2014).A lanthanum chelate possessing an open-channel framework with water nanotubes: properties and desalination.http://dx.doi.org/10.1039/c3dt52837e.
MLA	Chen, Mao-Long,et al."A lanthanum chelate possessing an open-channel framework with water nanotubes: properties and desalination".http://dx.doi.org/10.1039/c3dt52837e (2014).