Crystallisation of VOHPO4·0.5H2O in the presence of a surfactant

L. O'Mahony; D. Zemlyanov; Mark E. Smith; B. K. Hodnett

doi:10.1016/S0926-860X(03)00362-4

Crystallisation of VOHPO₄·0.5H₂O in the presence of a surfactant

L. O'Mahony, D. Zemlyanov, Mark E. Smith, B. K. Hodnett

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Abstract

The formation of vanadyl hydrogen phosphate hemihydrate (VOHPO ₄·0.5H₂O) by progressive attachment of phosphorous to a vanadium oxide lamellar phase in the presence of cetyltrimethylammonium bromide (CTAB) is described. Evidence from nuclear magnetic resonance (NMR), XPS, X-ray diffraction (XRD) and scanning electron microscopy (SEM) is presented for the initial formation of a vanadium oxide lamellar structure with no long-range order to which phosphate is then progressively attached. Phosphate attachment leads to lamellar collapse with the resultant formation of the hemihydrate phase, VOHPO₄·0.5H₂O.

Original language	English
Pages (from-to)	327-335
Number of pages	9
Journal	Applied Catalysis A, General
Volume	251
Issue number	2
DOIs	https://doi.org/10.1016/S0926-860X(03)00362-4
Publication status	Published - 30 Sep 2003

Keywords

Cetyltrimethylammonium bromide
Crystallisation
Mesophase
Phosphorous
Surfactant
Vanadium oxide

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10.1016/S0926-860X(03)00362-4

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title = "Crystallisation of VOHPO4·0.5H2O in the presence of a surfactant",

abstract = "The formation of vanadyl hydrogen phosphate hemihydrate (VOHPO 4·0.5H2O) by progressive attachment of phosphorous to a vanadium oxide lamellar phase in the presence of cetyltrimethylammonium bromide (CTAB) is described. Evidence from nuclear magnetic resonance (NMR), XPS, X-ray diffraction (XRD) and scanning electron microscopy (SEM) is presented for the initial formation of a vanadium oxide lamellar structure with no long-range order to which phosphate is then progressively attached. Phosphate attachment leads to lamellar collapse with the resultant formation of the hemihydrate phase, VOHPO4·0.5H2O.",

keywords = "Cetyltrimethylammonium bromide, Crystallisation, Mesophase, Phosphorous, Surfactant, Vanadium oxide",

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T1 - Crystallisation of VOHPO4·0.5H2O in the presence of a surfactant

AU - O'Mahony, L.

AU - Zemlyanov, D.

AU - Smith, Mark E.

AU - Hodnett, B. K.

PY - 2003/9/30

Y1 - 2003/9/30

N2 - The formation of vanadyl hydrogen phosphate hemihydrate (VOHPO 4·0.5H2O) by progressive attachment of phosphorous to a vanadium oxide lamellar phase in the presence of cetyltrimethylammonium bromide (CTAB) is described. Evidence from nuclear magnetic resonance (NMR), XPS, X-ray diffraction (XRD) and scanning electron microscopy (SEM) is presented for the initial formation of a vanadium oxide lamellar structure with no long-range order to which phosphate is then progressively attached. Phosphate attachment leads to lamellar collapse with the resultant formation of the hemihydrate phase, VOHPO4·0.5H2O.

AB - The formation of vanadyl hydrogen phosphate hemihydrate (VOHPO 4·0.5H2O) by progressive attachment of phosphorous to a vanadium oxide lamellar phase in the presence of cetyltrimethylammonium bromide (CTAB) is described. Evidence from nuclear magnetic resonance (NMR), XPS, X-ray diffraction (XRD) and scanning electron microscopy (SEM) is presented for the initial formation of a vanadium oxide lamellar structure with no long-range order to which phosphate is then progressively attached. Phosphate attachment leads to lamellar collapse with the resultant formation of the hemihydrate phase, VOHPO4·0.5H2O.

KW - Cetyltrimethylammonium bromide

KW - Crystallisation

KW - Mesophase

KW - Phosphorous

KW - Surfactant

KW - Vanadium oxide

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U2 - 10.1016/S0926-860X(03)00362-4

DO - 10.1016/S0926-860X(03)00362-4

M3 - Article

AN - SCOPUS:0141525274

SN - 0926-860X

VL - 251

SP - 327

EP - 335

JO - Applied Catalysis A, General

JF - Applied Catalysis A, General

IS - 2

ER -

Crystallisation of VOHPO₄·0.5H₂O in the presence of a surfactant

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