STRUCTURAL STUDY OF TI-IV EXCHANGED K10-MONTMORILLONITE BY XRD, EXAFS AND XANES

被引：9

作者：

SANCHEZ, MC

GARCIA, J

MAYORAL, JA

BLASCO, J

PROIETTI, MG

机构：

[1] UNIV ZARAGOZA,CSIC,INST CIENCIA MAT ARAGON,DEPT FIS MAT CONDENSADA,E-50009 ZARAGOZA,SPAIN

[2] UNIV ZARAGOZA,CSIC,INST CIENCIA MAT ARAGON,DEPT QUIM ORGAN,E-50009 ZARAGOZA,SPAIN

来源：

JOURNAL OF MOLECULAR CATALYSIS | 1994年 / 92卷 / 03期

关键词：

EXAFS; MONTMORILLONITES; STRUCTURE; TITANIUM; XANES; XRD;

D O I：

10.1016/0304-5102(94)00075-1

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：

Structural and catalytic properties of Ti-IV/K10-montmorillonite and fine size anatase activated at different temperatures are compared. EXAFS spectra at the Ti K edge and X-ray diffraction patterns show the formation of small TiO2 particles in the preparative process, which grow up with the calcination temperature. The low catalytic activity of the fine size anatase clearly shows that the activity of the exchanged clay is due to the exchanged Ti-IV into the K10-montmorillonite. XANES indicates that some of the titanium exchanged atoms would present a tetrahedral structure and consequently behave as a strong Lewis acid.

引用

页码：311 / 324

页数：14

共 16 条

[1] XRD, EXAFS AND XANES INVESTIGATION OF TI(IV) EXCHANGED K10-MONTMORILLONITE
SANCHEZ, MC
GARCIA, J
MAYORAL, JA
BLASCO, J
PROIETTI, MG
PHYSICA B, 1995, 208 (1-4): : 702 - 704
[2] XRD EXAFS and XANES investigation of Ti(IV) exchanged K10-montmorillonite
Sanchez, M.C.
Garcia, J.
Mayoral, J.A.
Blasco, J.
Proietti, M.G.
Physica B: Condensed Matter, 1995, 208-209 (1-4):
[3] TiIV exchanged K10-montmorillonite: characterisation and catalytic properties in liquid-phase sulfide oxidation
Khedher, I.
Ghorbel, A.
Fraile, J. M.
Mayoral, J. A.
JOURNAL OF CHEMICAL RESEARCH, 2008, (10) : 604 - 608
[4] Synthesis of substituted isoquinolines via iminoalkyne cyclization using Ag(I) exchanged K10-montmorillonite clay as a reusable catalyst
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RSC ADVANCES, 2014, 4 (73) : 38491 - 38497
[5] Synthesis of substituted isoquinolines via iminoalkyne cyclization using Ag(i) exchanged K10-montmorillonite clay as a reusable catalyst
Pitchumani, K. (pit12399@yahoo.com), 1600, Royal Society of Chemistry (04):
[6] Structural changes in Ti1-xAlxN coatings during turning: A XANES and EXAFS study of worn tools
Rogstrom, L.
Moreno, M.
Andersson, J. M.
Johansson-Joesaar, M. P.
Oden, M.
Klementiev, K.
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Magnuson, M.
APPLIED SURFACE SCIENCE, 2023, 612
[7] Structural studies of Na-montmorillonite exchanged with Fe2+, Cr3+ and Ti4+ by N2 adsorption and EXAFS
Juang, RS
Lin, SH
Huang, FC
Cheng, CH
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2004, 274 (01) : 337 - 340
[8] Structural study of an amorphous Cu64Ti36 alloy produced by mechanical alloying using XRD, EXAFS and RMC simulations
Machado, K. D.
Maciel, G. A.
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de Lima, J. C.
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SOLID STATE COMMUNICATIONS, 2010, 150 (35-36) : 1674 - 1678
[9] A Ti L3,2 - and K - edge XANES and EXAFS study on Fe3+ - substituted CaCu3Ti4O12
Raval, Pooja Y.
Joshi, Niketa P.
Pansara, Pooja R.
Vasoya, Nimish H.
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Dolia, Satya Narayan
Modi, Kunal B.
Singhal, Rishi Kumar
CERAMICS INTERNATIONAL, 2018, 44 (17) : 20716 - 20722
[10] Evolution of microstructure during the thermal activation of chromium-promoted tin(IV) oxide catalysts: An FT-IR, FT-Raman, XRD, TEM, and XANES/EXAFS study
Harrison, PG
Lloyd, NC
Daniell, W
Bailey, C
Azelee, W
CHEMISTRY OF MATERIALS, 1999, 11 (04) : 896 - 909

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