Synthesis and structural characterization of microporous yttrium and calcium silicates

被引:33
作者
Rocha, J [1 ]
Ferreira, P [1 ]
Lin, Z [1 ]
Brandao, P [1 ]
Ferreira, A [1 ]
de Jesus, JDP [1 ]
机构
[1] Univ Aveiro, Dept Chem, P-3810 Aveiro, Portugal
关键词
D O I
10.1021/jp9803337
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 synthesis and structural characterization of AV-1 (Aveiro microporous solid no. 1), the first synthetic microporous yttrium silicate containing stoichiometric amounts of framework sodium (and yttrium) cations, are reported. AV-1, Na2K2Y2Si16O38. 10H(2)O, possesses the structure of the rare mineral montregianite. The synthesis and structural characterization of AV-2, an alkali calcium silicate hydrate (ideal composition HKCa2Si8O19.6H2O) analogue of the rare mineral rhodesite, are also reported. The structures of AV-1 and AV-2 are characterized by the same type of double silicate layers, but important differences exist with respect to the constitution of the octahedral layers and channel species. AV materials have been characterized by a range of techniques, viz., scanning electron microscopy (SEM), powder X-ray diffraction (XRD), Si-29 and Na-23 single- and triple-quantum (3Q) magic-angle spinning (MAS) NMR spectroscopy, Fourier transform spectroscopy (FTIR), and thermogravimetric analysis (TGA).
引用
收藏
页码:4739 / 4744
页数:6
相关论文
共 16 条
  • [1] MICROPOROUS TITANOSILICATE ETS-10 - A STRUCTURAL SURVEY
    ANDERSON, MW
    TERASAKI, O
    OHSUNA, T
    MALLEY, PJO
    PHILIPPOU, A
    MACKAY, SP
    FERREIRA, A
    ROCHA, J
    LIDIN, S
    [J]. PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 1995, 71 (05): : 813 - 841
  • [2] AL,TI AVOIDANCE IN THE MICROPOROUS TITANOALUMINOSILICATE ETAS-10
    ANDERSON, MW
    PHILIPPOU, A
    LIN, Z
    FERREIRA, A
    ROCHA, J
    [J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH, 1995, 34 (09): : 1003 - 1005
  • [3] STRUCTURE OF THE MICROPOROUS TITANOSILICATE ETS-10
    ANDERSON, MW
    TERASAKI, O
    OHSUNA, T
    PHILIPPOU, A
    MACKAY, SP
    FERREIRA, A
    ROCHA, J
    LIDIN, S
    [J]. NATURE, 1994, 367 (6461) : 347 - 351
  • [4] [Anonymous], 1989, US Patent, Patent No. [US4853202 A, 4853202]
  • [5] Chao GY, 1978, CAN MINERAL, V16, P561
  • [6] Engelhardt G., 1987, HIGH RESOLUTION SOLI
  • [7] GHOSE S, 1987, AM MINERAL, V72, P365
  • [8] HESSE KF, 1987, Z KRISTALLOGR, V178, P98
  • [9] CRYSTAL-STRUCTURE OF RHODESITE, HK1-XNAX+2YCA2-Y (IB,3,2INFINITY(2))[SI8O19] .(6-Z) H2O, FROM 3 LOCALITIES AND ITS RELATION TO OTHER SILICATES WITH DREIER DOUBLE-LAYERS
    HESSE, KF
    LIEBAU, F
    MERLINO, S
    [J]. ZEITSCHRIFT FUR KRISTALLOGRAPHIE, 1992, 199 (1-2): : 25 - 48
  • [10] Synthesis and structural characterization of microporous umbite, penkvilksite, and other titanosilicates
    Lin, Z
    Rocha, J
    Brandao, P
    Ferreira, A
    Esculcas, AP
    deJesus, JDP
    Philippou, A
    Anderson, MW
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 1997, 101 (36): : 7114 - 7120