Zr K-edge XAS study on ZrO2-pillared aluminosilicate

Hyun Jung; Seung Min Paek; Joo Byoung Yoon; Jin Ho Choy

doi:10.1007/s10934-006-9002-5

Zr K-edge XAS study on ZrO₂-pillared aluminosilicate

Hyun Jung, Seung Min Paek, Joo Byoung Yoon, Jin Ho Choy

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

The ZrO₂-pillared clay with high acidic property has been prepared by reacting 1 wt% colloidal suspension of Na⁺- montmorillonite with 1 N aqueous solution of ZrOCl₂•8H ₂O and by subsequent heating. The evolution of local structure around zirconium of the intercalant stabilized in-between aluminosilicate layers upon intercalating, drying, and pillaring condition has been systematically studied by X-ray absorption spectroscopy, and compared to those of reference compounds such as ZrO₂, and ZrOCl₂ • 8H₂O and its 1 N aqueous solution. The intercalated zirconium species was identified as the Zr-tetramer, [Zr₄(OH)₁₄(H₂O)₁₀] ²⁺, with an average molecular volume of 10 × 10 Å² and a thickness of 4.5 Å. Also it becomes more condensed upon drying and eventually transforms to a zirconium oxide pillar upon calcination.

Original language	English
Pages (from-to)	369-377
Number of pages	9
Journal	Journal of Porous Materials
Volume	14
Issue number	4
DOIs	https://doi.org/10.1007/s10934-006-9002-5
State	Published - Nov 2007

Keywords

Intercalation
Porous materials
XAS
ZrO-pillared clay

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10.1007/s10934-006-9002-5

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@article{28aa8786bdc34b6180fb88eeded1f898,

title = "Zr K-edge XAS study on ZrO2-pillared aluminosilicate",

abstract = "The ZrO2-pillared clay with high acidic property has been prepared by reacting 1 wt\% colloidal suspension of Na+- montmorillonite with 1 N aqueous solution of ZrOCl2•8H 2O and by subsequent heating. The evolution of local structure around zirconium of the intercalant stabilized in-between aluminosilicate layers upon intercalating, drying, and pillaring condition has been systematically studied by X-ray absorption spectroscopy, and compared to those of reference compounds such as ZrO2, and ZrOCl2 • 8H2O and its 1 N aqueous solution. The intercalated zirconium species was identified as the Zr-tetramer, [Zr4(OH)14(H2O)10] 2+, with an average molecular volume of 10 × 10 {\AA}2 and a thickness of 4.5 {\AA}. Also it becomes more condensed upon drying and eventually transforms to a zirconium oxide pillar upon calcination.",

keywords = "Intercalation, Porous materials, XAS, ZrO-pillared clay",

author = "Hyun Jung and Paek, \{Seung Min\} and Yoon, \{Joo Byoung\} and Choy, \{Jin Ho\}",

year = "2007",

month = nov,

doi = "10.1007/s10934-006-9002-5",

language = "English",

volume = "14",

pages = "369--377",

journal = "Journal of Porous Materials",

issn = "1380-2224",

publisher = "Springer Netherlands",

number = "4",

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TY - JOUR

T1 - Zr K-edge XAS study on ZrO2-pillared aluminosilicate

AU - Jung, Hyun

AU - Paek, Seung Min

AU - Yoon, Joo Byoung

AU - Choy, Jin Ho

PY - 2007/11

Y1 - 2007/11

N2 - The ZrO2-pillared clay with high acidic property has been prepared by reacting 1 wt% colloidal suspension of Na+- montmorillonite with 1 N aqueous solution of ZrOCl2•8H 2O and by subsequent heating. The evolution of local structure around zirconium of the intercalant stabilized in-between aluminosilicate layers upon intercalating, drying, and pillaring condition has been systematically studied by X-ray absorption spectroscopy, and compared to those of reference compounds such as ZrO2, and ZrOCl2 • 8H2O and its 1 N aqueous solution. The intercalated zirconium species was identified as the Zr-tetramer, [Zr4(OH)14(H2O)10] 2+, with an average molecular volume of 10 × 10 Å2 and a thickness of 4.5 Å. Also it becomes more condensed upon drying and eventually transforms to a zirconium oxide pillar upon calcination.

AB - The ZrO2-pillared clay with high acidic property has been prepared by reacting 1 wt% colloidal suspension of Na+- montmorillonite with 1 N aqueous solution of ZrOCl2•8H 2O and by subsequent heating. The evolution of local structure around zirconium of the intercalant stabilized in-between aluminosilicate layers upon intercalating, drying, and pillaring condition has been systematically studied by X-ray absorption spectroscopy, and compared to those of reference compounds such as ZrO2, and ZrOCl2 • 8H2O and its 1 N aqueous solution. The intercalated zirconium species was identified as the Zr-tetramer, [Zr4(OH)14(H2O)10] 2+, with an average molecular volume of 10 × 10 Å2 and a thickness of 4.5 Å. Also it becomes more condensed upon drying and eventually transforms to a zirconium oxide pillar upon calcination.

KW - Intercalation

KW - Porous materials

KW - XAS

KW - ZrO-pillared clay

UR - https://www.scopus.com/pages/publications/34848916111

U2 - 10.1007/s10934-006-9002-5

DO - 10.1007/s10934-006-9002-5

M3 - Article

AN - SCOPUS:34848916111

SN - 1380-2224

VL - 14

SP - 369

EP - 377

JO - Journal of Porous Materials

JF - Journal of Porous Materials

IS - 4

ER -

Zr K-edge XAS study on ZrO₂-pillared aluminosilicate

Abstract

Keywords

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