STUDY OF THE EVOLUTION OF CACO3-V2O5 (1-1) MIXTURE AT ROOM-TEMPERATURE BY THERMAL-ANALYSIS

被引：4
|
作者：
SOBRADOS, L [1 ]
GONI, S [1 ]
SAGRERA, JL [1 ]
MARTINEZ, MJ [1 ]
机构：
[1] CSIC,CTR ENVIRONM SCI,MADRID 6,SPAIN
来源：
JOURNAL OF THERMAL ANALYSIS | 1992年 / 38卷 / 04期
关键词：
CACO3-V2O5; MIXTURE;
D O I：
10.1007/BF01979433
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Reactivity of solid mixtures of crystalline V2O5 and basic compounds strongly increases at room temperature by means of water molecules adsorption process from a saturated atmosphere (100% RH). This is due, to a crystalline-amorphous V2O5 transformation and secondly to the formation of strongly acid V2O5 gels. In the present paper the evolution with time of the CaCO3-V2O5 (1:1) mixture in the aforementioned conditions was studied by thermal analysis (TG, DTG and DSC), X-ray diffraction (XRD) and infrared spectroscopy (IR). The results confirmed the V2O5 gels formation which decomposed the basic CaCO3 at room temperature through an acid-base mechanism reaction. A new crystalline compound was obtained which corresponded to a hydrated calcium metavanadate.
引用
收藏
页码：997 / 1004
页数：8
相关论文
共 50 条
  • [21] Study of room-temperature magnetoelectric coupling in (1 − x)BaTiO3 and (x)NiFe2O4 multiferroic composites
    Padmapriya D
    Dhayanithi D
    Rahul M.T
    Nandakumar Kalarikkal
    Giridharan N V
    Applied Physics A, 2021, 127
  • [22] Oxygen-vacancy-induced room-temperature magnetization in lamellar V2O5 thin films
    Cezar, A. B.
    Graff, I. L.
    Varalda, J.
    Schreiner, W. H.
    Mosca, D. H.
    JOURNAL OF APPLIED PHYSICS, 2014, 116 (16)
  • [23] (Ta1-xNbx)2O5 films produced by atomic layer deposition:: Temperature dependent dielectric spectroscopy and room-temperature I-V characteristics
    Stromme, M
    Niklasson, GA
    Ritala, M
    Leskelä, M
    Kukli, K
    JOURNAL OF APPLIED PHYSICS, 2001, 90 (09) : 4532 - 4542
  • [24] OXIDATIVE AROMATIZATION OF HANTZSCH 1,4-DIHYDROPYRIDINES BY H2O2/V2O5 AT ROOM TEMPERATURE
    Su, Jinlong
    Zhang, Cai
    Lin, Dan
    Duan, Yiqin
    Fu, Xiangkai
    Mu, Ruizhu
    SYNTHETIC COMMUNICATIONS, 2010, 40 (04) : 595 - 600
  • [25] Room temperature thermal properties of Pb(Fe1/2Nb1/2)O3 ferroelectromagnetic ceramics
    Font, R.
    Marin, E.
    Lara-Bernal, A.
    Raymond, O.
    Calderon, A.
    Portelles, J.
    Siqueiros, J. M.
    REVISTA MEXICANA DE FISICA, 2011, 57 (03) : 241 - 244
  • [26] DIELECTRIC BEHAVIOR IN THE SRF2-H2O SYSTEM .1. MEASUREMENT AT ROOM-TEMPERATURE
    KURODA, Y
    YOSHIKAWA, Y
    MORIMOTO, T
    NAGAO, M
    LANGMUIR, 1995, 11 (01) : 259 - 264
  • [27] Room-temperature red phosphorescence of structurally simple benzo[2,1,3]thiadiazoles
    Gutierrez, Gregory
    Sazama, Graham
    Swager, Timothy
    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2015, 250
  • [28] THERMAL-ANALYSIS OF THE FERROELASTIC PHASE-TRANSITIONS OF LAXPR1-XP5O14
    QU, XX
    XIA, H
    XU, XY
    ZHANG, W
    ZHANG, XK
    JOURNAL OF PHYSICS-CONDENSED MATTER, 1990, 2 (01) : 55 - 59
  • [29] Study of room-temperature magnetoelectric coupling in (1-x)BaTiO3 and (x)NiFe2O4 multiferroic composites
    Padmapriya, D.
    Dhayanithi, D.
    Rahul, M. T.
    Kalarikkal, Nandakumar
    Giridharan, N., V
    APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2021, 127 (04):
  • [30] ROOM-TEMPERATURE CONDUCTANCE QUANTIZATION IN V-VERTICAL-BAR-AMORPHOUS-V2O5-VERTICAL-BAR-V THIN-FILM STRUCTURES
    YUN, EJ
    BECKER, MF
    WALSER, RM
    APPLIED PHYSICS LETTERS, 1993, 63 (18) : 2493 - 2495
12345