Synthesis, characteristics and electrical properties of heteropoly compound Na2K3CuV(OH2)W11O39•16H2O permeated by Gd

被引：6

作者：

Wang, Lili ^{[1
]}

Zhou, Baibin

Cao, Jingjing

Wang, Yunpeng

机构：

[1] NE Forestry Univ, Dept Chem, Coll Sci, Harbin 150040, Peoples R China

[2] Harbin Normal Univ, Dept Chem, Harbin 150080, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2007年 / 432卷 / 1-2期

关键词：

rare earth element; ionic conduction; thermal analysis; X-ray diffraction; impedance spectroscopy;

D O I：

10.1016/j.jallcom.2006.06.027

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The permeation of the rare earth element gadolinium (Gd) to the heteropoly compound Na2K3CuV(OH2)W(11)O(39)(.)16H(2)O using the rare earth gas phase-heated diffused permeation method is reported for the first time. Inductively coupled plasma (ICP) and X-ray photoelectron spectroscopy (XPS) were used to determine the percentage composition of the rare earth element Gd in a permeated sample. Structures of compounds before and after permeation were investigated by infrared spectroscopy (IR) and X-ray diffraction (XRD). The results show that compound anions before permeation have the Keggin structure, while the Keggin cage structure is destroyed and a new compound is produced due to the permeation of Gd. Conductivity of compounds before and after permeation was investigated by ac impedance spectra. It reveals that conductivity of the permeated sample is greatly enhanced compared with the original sample. The thermal analysis result indicates that the thermostability of the permeated sample is improved. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：55 / 60

页数：6

共 28 条

[1] Synthesis and characterisation of proton conducting styrene-co-methacrylate-silica sol-gel membranes containing tungstophosphoric acid [J].

Aparicio, M ;

Castro, Y ;

Duran, A .

SOLID STATE IONICS, 2005, 176 (3-4) :333-340

[2] Isomerization of n-hexane on the Pt-promoted Keggin and Dawson tungstophosphoric heteropoly acids supported on zirconia [J].

Ivanov, AV ;

Vasina, TV ;

Nissenbaum, VD ;

Kustov, LM ;

Timofeeva, MN ;

Houzvicka, JI .

APPLIED CATALYSIS A-GENERAL, 2004, 259 (01) :65-72

[3] Surface investigation on thermal stability of tungstophosphoric acid supported on MCM-41 using synchrotron radiation [J].

Jalil, PA ;

Tabet, N ;

Faiz, M ;

Hamdan, NM ;

Hussain, Z .

APPLIED CATALYSIS A-GENERAL, 2004, 257 (01) :1-6

[4] The structure of molybdenum-heteropoly acids under conditions of gas-phase selective oxidation catalysis:: a multi-method in situ study [J].

Jentoft, FC ;

Klokishner, S ;

Kröhnert, J ;

Melsheimer, J ;

Ressler, T ;

Timpe, O ;

Wienold, J ;

Schlögl, R .

APPLIED CATALYSIS A-GENERAL, 2003, 256 (1-2) :291-317

[5] Electronic structure of CuWO4:: XPS, XES and NEXAFS studies [J].

Khyzhun, OY ;

Strunskus, T ;

Cramm, S ;

Solonin, YM .

JOURNAL OF ALLOYS AND COMPOUNDS, 2005, 389 (1-2) :14-20

[6] Keggin's ion structural modification and expansion of dodecatungstophosphoric acid hexahydrate induced by temperature treatment:: In situ X-ray powder diffraction and raman investigations [J].

Kremenovic, A ;

Spasojevic-de Biré, A ;

Dimitrijevic, R ;

Sciau, P ;

Mioc, UB ;

Colomban, P .

SOLID STATE IONICS, 2000, 132 (1-2) :39-53

[7] Synthesis and crystal structure of Ba2La2MnW2O12 [J].

Li, ZF ;

Sun, JL ;

You, LP ;

Wang, YX ;

Lin, JH .

JOURNAL OF ALLOYS AND COMPOUNDS, 2004, 379 (1-2) :117-121

[8]

Li ZH, 2002, J RARE EARTH, V20, P479

[9]

Li ZH, 2003, CHINESE J INORG CHEM, V19, P1053

[10]

LI ZH, 2004, CHIN HIGH TECHNOL LE, V14, P45

← 1 2 3 →