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Synthesis, characte...
Synthesis, characterization, and challenges faced during the preparation of zirconium pillared clays
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- Chauhan, Tanya (author)
- University of Miskolc
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- Udayakumar, Mahitha (author)
- University of Miskolc
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- Ahmed Shehab, Mohammed (author)
- University of Miskolc
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- Kristály, Ferenc (author)
- University of Miskolc
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- Katalin Leskó, Anett (author)
- University of Miskolc
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- Ek, Martin (author)
- Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Centrum för analys och syntes,Kemiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Centre for Analysis and Synthesis,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH
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- Wahlqvist, David (author)
- Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Centrum för analys och syntes,Kemiska institutionen,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Centre for Analysis and Synthesis,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH
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- Tóth, Pál (author)
- University of Miskolc
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- Hernadi, Klara (author)
- University of Miskolc
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- Németh, Zoltán (author)
- University of Miskolc
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(creator_code:org_t)
- Elsevier BV, 2022
- 2022
- English 10 s.
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In: Arabian Journal of Chemistry. - : Elsevier BV. - 1878-5352. ; 15:4
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https://doi.org/10.1...
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Abstract
Subject headings
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- In this study, Zr-pillared montmorillonite clays (Zr-PILCs) were synthesized using two different precursor materials: raw montmorillonite (CM) and sodium ion-saturated montmorillonite (Na-CM) at different Zr/clay ratios (2.5, 5 and 10 mmol/g). To study the effect of Zr concentration and clay pre-treatment with NaCl on pillaring, the modified clay samples were characterized in detail using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), high-resolution transmission electron microscopy (HRTEM), scanning transmission electron microscopy and energy-dispersive X-ray spectroscopy (STEM-EDX). The XRD analysis showed the increase of basal spacing of Zr-PILCs prepared from both precursor materials: from 1.26 to 1.74 nm in the case of CM, and from 1.13 to 1.93 nm for Na-CM. Results from FT-IR revealed new bands ascribed to Zr-O bonds in the range of 400–500 cm−1 in Zr-pillared samples obtained from Na-CM at Zr/clay ratios of 2.5 and 5 mmol/g. The distribution and nature of Zr species in between the silicate layers were studied using STEM-EDX and HAADF imaging. They were found to be separated by a distance of 1.5–3 nm and their thickness lies in the range of 1–2 nm. Pillared clays prepared from pre-treatment with NaCl were more thermally stable at higher temperatures.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Nanoteknik -- Nanoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Nano-technology -- Nano-technology (hsv//eng)
Keyword
- Montmorillonite
- Zr-PILCs
- Pillaring
- Sodium-saturated montmorillonite
- Specific surface area
- Basal spacing
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Chauhan, Tanya
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Udayakumar, Mahi ...
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Ahmed Shehab, Mo ...
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Kristály, Ferenc
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Katalin Leskó, A ...
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Ek, Martin
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show more...
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Wahlqvist, David
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Tóth, Pál
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Hernadi, Klara
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Németh, Zoltán
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show less...
- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Nano technology
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and Nano technology
- Articles in the publication
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Arabian Journal ...
- By the university
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Lund University