Cargando…

Modes of tetra(4-pyridyl)porphyrinatomanganese(III) ion intercalation inside natural clays

BACKGROUND: Metalloporphyrin ions, with planar shape, have been known to intercalate horizontally and diagonally between montmorillonite layers. Perpendicular intercalation inside montmorillonite has not been reported earlier. This work aims at achieving perpendicular intercalation inside montmorill...

Descripción completa

Detalles Bibliográficos
Autores principales: Zyoud, Ahed, Jondi, Waheed, Mansour, Waseem, Majeed Khan, M. A., Hilal, Hikmat S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer International Publishing 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4787189/
https://www.ncbi.nlm.nih.gov/pubmed/26973710
http://dx.doi.org/10.1186/s13065-016-0153-4
_version_ 1782420662831284224
author Zyoud, Ahed
Jondi, Waheed
Mansour, Waseem
Majeed Khan, M. A.
Hilal, Hikmat S.
author_facet Zyoud, Ahed
Jondi, Waheed
Mansour, Waseem
Majeed Khan, M. A.
Hilal, Hikmat S.
author_sort Zyoud, Ahed
collection PubMed
description BACKGROUND: Metalloporphyrin ions, with planar shape, have been known to intercalate horizontally and diagonally between montmorillonite layers. Perpendicular intercalation inside montmorillonite has not been reported earlier. This work aims at achieving perpendicular intercalation inside montmorillonite in natural clays. Possible intercalation inside other forms of natural clay will also be investigated. METHODS: Natural clays were purified and characterized. The naked clay powder was then refluxed with tetra(4-pyridyl)porphyrinatomanganese(III) ion (MnTPyP(+)) solution in methanol with continuous stirring for different times. Electronic absorption spectra, atomic absorption spectra, Fourier Transform infrared spectra, scanning electron microscopy and X-ray diffraction were all used in clay characterization and in intercalation study. RESULTS: The natural clay involved different phases, namely montmorillonite, biotite, kaolinite, illite and traces of quartz. Montmorillonite clay allowed horizontal, diagonal and perpendicular intercalation of the metalloporphyrin ions. Biotite allowed only horizontal intercalation. The mode of intercalation was deduced by monitoring the clay inter-planar distance value change. Intercalation occurred inside both micro- and nano-size clay powders to different extents. The nano-powder (average size ~50 nm) showed uptake values up to 3.8 mg MnTPyP/g solid, whereas the micro-size powder (average size ~316 nm) exhibited lower uptake (2.4 mg MnTPyP/g solid). Non-expandable clay phases did not allow any intercalation. The intercalated MnTPyP(+) ions showed promising future supported catalyst applications. CONCLUSIONS: Depending on their phase, natural clays hosted metalloporphyrin ions. Montmorillonite can allow all three possible intercalation geometries, horizontal, diagonal and for the first time perpendicular. Biotite allows horizontal intercalation only. Non-expandable clays allow no intercalation. [Figure: see text] ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/s13065-016-0153-4) contains supplementary material, which is available to authorized users.
format Online
Article
Text
id pubmed-4787189
institution National Center for Biotechnology Information
language English
publishDate 2016
publisher Springer International Publishing
record_format MEDLINE/PubMed
spelling pubmed-47871892016-03-12 Modes of tetra(4-pyridyl)porphyrinatomanganese(III) ion intercalation inside natural clays Zyoud, Ahed Jondi, Waheed Mansour, Waseem Majeed Khan, M. A. Hilal, Hikmat S. Chem Cent J Research Article BACKGROUND: Metalloporphyrin ions, with planar shape, have been known to intercalate horizontally and diagonally between montmorillonite layers. Perpendicular intercalation inside montmorillonite has not been reported earlier. This work aims at achieving perpendicular intercalation inside montmorillonite in natural clays. Possible intercalation inside other forms of natural clay will also be investigated. METHODS: Natural clays were purified and characterized. The naked clay powder was then refluxed with tetra(4-pyridyl)porphyrinatomanganese(III) ion (MnTPyP(+)) solution in methanol with continuous stirring for different times. Electronic absorption spectra, atomic absorption spectra, Fourier Transform infrared spectra, scanning electron microscopy and X-ray diffraction were all used in clay characterization and in intercalation study. RESULTS: The natural clay involved different phases, namely montmorillonite, biotite, kaolinite, illite and traces of quartz. Montmorillonite clay allowed horizontal, diagonal and perpendicular intercalation of the metalloporphyrin ions. Biotite allowed only horizontal intercalation. The mode of intercalation was deduced by monitoring the clay inter-planar distance value change. Intercalation occurred inside both micro- and nano-size clay powders to different extents. The nano-powder (average size ~50 nm) showed uptake values up to 3.8 mg MnTPyP/g solid, whereas the micro-size powder (average size ~316 nm) exhibited lower uptake (2.4 mg MnTPyP/g solid). Non-expandable clay phases did not allow any intercalation. The intercalated MnTPyP(+) ions showed promising future supported catalyst applications. CONCLUSIONS: Depending on their phase, natural clays hosted metalloporphyrin ions. Montmorillonite can allow all three possible intercalation geometries, horizontal, diagonal and for the first time perpendicular. Biotite allows horizontal intercalation only. Non-expandable clays allow no intercalation. [Figure: see text] ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/s13065-016-0153-4) contains supplementary material, which is available to authorized users. Springer International Publishing 2016-03-10 /pmc/articles/PMC4787189/ /pubmed/26973710 http://dx.doi.org/10.1186/s13065-016-0153-4 Text en © Zyoud et al. 2016 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
spellingShingle Research Article
Zyoud, Ahed
Jondi, Waheed
Mansour, Waseem
Majeed Khan, M. A.
Hilal, Hikmat S.
Modes of tetra(4-pyridyl)porphyrinatomanganese(III) ion intercalation inside natural clays
title Modes of tetra(4-pyridyl)porphyrinatomanganese(III) ion intercalation inside natural clays
title_full Modes of tetra(4-pyridyl)porphyrinatomanganese(III) ion intercalation inside natural clays
title_fullStr Modes of tetra(4-pyridyl)porphyrinatomanganese(III) ion intercalation inside natural clays
title_full_unstemmed Modes of tetra(4-pyridyl)porphyrinatomanganese(III) ion intercalation inside natural clays
title_short Modes of tetra(4-pyridyl)porphyrinatomanganese(III) ion intercalation inside natural clays
title_sort modes of tetra(4-pyridyl)porphyrinatomanganese(iii) ion intercalation inside natural clays
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4787189/
https://www.ncbi.nlm.nih.gov/pubmed/26973710
http://dx.doi.org/10.1186/s13065-016-0153-4
work_keys_str_mv AT zyoudahed modesoftetra4pyridylporphyrinatomanganeseiiiionintercalationinsidenaturalclays
AT jondiwaheed modesoftetra4pyridylporphyrinatomanganeseiiiionintercalationinsidenaturalclays
AT mansourwaseem modesoftetra4pyridylporphyrinatomanganeseiiiionintercalationinsidenaturalclays
AT majeedkhanma modesoftetra4pyridylporphyrinatomanganeseiiiionintercalationinsidenaturalclays
AT hilalhikmats modesoftetra4pyridylporphyrinatomanganeseiiiionintercalationinsidenaturalclays