and magnetic properties of a 24-membered ring porous nickel(II) phosphate, VSB-1

N Guillou; Q Gao; M Nogues; Russell Edward Morris; M Hervieu; G Férey; AK Cheetham

and magnetic properties of a 24-membered ring porous nickel(II) phosphate, VSB-1

N Guillou, Q Gao, M Nogues, Russell Edward Morris, M Hervieu, G Férey, AK Cheetham

Research output: Other contribution

Abstract

A large-pore, zeolitic nickel(II) phosphate, VSB-1, has been prepared under hydrothermal conditions. The unidimensional pore system is delineated by 24 NiO6 and PO4 polyhedra and has a free diameter of approximately 9 Angstrom. It becomes microporous on calcination in air at 623 K, yielding a BET surface area of 82 m(2).g(-1), and is stable in air to approximately 823 K. VSB-1 can be prepared in both ammonium and potassium forms, and exhibits ion-exchange properties that lead, for example, to the formation of the lithium and sodium derivatives. Other cations (e.g. Mn, Fe, Co, and Zn) can be substituted for Ni in VSB-1, up to a level as high as 30 atomic %. The parent compound exhibits canted antiferromagnetic order at T-N = 10.5 K with theta = -71 K; on doping with Fe, T-N increases to 20 K and theta decreases to -108 K. (C) 1999 Academie des sciences/Editions scientifiques et medicales Elsevier SAS.

Original language	English
Volume	Sirie II
Publication status	Published - Jul 1999

Keywords

zeolites
nickel phosphate
microporous compounds
ion-exchange
antiferromagnetism
HYDROTHERMAL SYNTHESIS
CRYSTAL-STRUCTURE
ULM-12
PORE

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title = "and magnetic properties of a 24-membered ring porous nickel(II) phosphate, VSB-1",

abstract = "A large-pore, zeolitic nickel(II) phosphate, VSB-1, has been prepared under hydrothermal conditions. The unidimensional pore system is delineated by 24 NiO6 and PO4 polyhedra and has a free diameter of approximately 9 Angstrom. It becomes microporous on calcination in air at 623 K, yielding a BET surface area of 82 m(2).g(-1), and is stable in air to approximately 823 K. VSB-1 can be prepared in both ammonium and potassium forms, and exhibits ion-exchange properties that lead, for example, to the formation of the lithium and sodium derivatives. Other cations (e.g. Mn, Fe, Co, and Zn) can be substituted for Ni in VSB-1, up to a level as high as 30 atomic %. The parent compound exhibits canted antiferromagnetic order at T-N = 10.5 K with theta = -71 K; on doping with Fe, T-N increases to 20 K and theta decreases to -108 K. (C) 1999 Academie des sciences/Editions scientifiques et medicales Elsevier SAS.",

keywords = "zeolites, nickel phosphate, microporous compounds, ion-exchange, antiferromagnetism, HYDROTHERMAL SYNTHESIS, CRYSTAL-STRUCTURE, ULM-12, PORE",

author = "N Guillou and Q Gao and M Nogues and Morris, {Russell Edward} and M Hervieu and G F{\'e}rey and AK Cheetham",

note = "Solid Chem Crystal Chem",

year = "1999",

month = jul,

language = "English",

volume = "Sirie II",

type = "Other",

}

TY - GEN

T1 - and magnetic properties of a 24-membered ring porous nickel(II) phosphate, VSB-1

AU - Guillou, N

AU - Gao, Q

AU - Nogues, M

AU - Morris, Russell Edward

AU - Hervieu, M

AU - Férey, G

AU - Cheetham, AK

N1 - Solid Chem Crystal Chem

PY - 1999/7

Y1 - 1999/7

N2 - A large-pore, zeolitic nickel(II) phosphate, VSB-1, has been prepared under hydrothermal conditions. The unidimensional pore system is delineated by 24 NiO6 and PO4 polyhedra and has a free diameter of approximately 9 Angstrom. It becomes microporous on calcination in air at 623 K, yielding a BET surface area of 82 m(2).g(-1), and is stable in air to approximately 823 K. VSB-1 can be prepared in both ammonium and potassium forms, and exhibits ion-exchange properties that lead, for example, to the formation of the lithium and sodium derivatives. Other cations (e.g. Mn, Fe, Co, and Zn) can be substituted for Ni in VSB-1, up to a level as high as 30 atomic %. The parent compound exhibits canted antiferromagnetic order at T-N = 10.5 K with theta = -71 K; on doping with Fe, T-N increases to 20 K and theta decreases to -108 K. (C) 1999 Academie des sciences/Editions scientifiques et medicales Elsevier SAS.

AB - A large-pore, zeolitic nickel(II) phosphate, VSB-1, has been prepared under hydrothermal conditions. The unidimensional pore system is delineated by 24 NiO6 and PO4 polyhedra and has a free diameter of approximately 9 Angstrom. It becomes microporous on calcination in air at 623 K, yielding a BET surface area of 82 m(2).g(-1), and is stable in air to approximately 823 K. VSB-1 can be prepared in both ammonium and potassium forms, and exhibits ion-exchange properties that lead, for example, to the formation of the lithium and sodium derivatives. Other cations (e.g. Mn, Fe, Co, and Zn) can be substituted for Ni in VSB-1, up to a level as high as 30 atomic %. The parent compound exhibits canted antiferromagnetic order at T-N = 10.5 K with theta = -71 K; on doping with Fe, T-N increases to 20 K and theta decreases to -108 K. (C) 1999 Academie des sciences/Editions scientifiques et medicales Elsevier SAS.

KW - zeolites

KW - nickel phosphate

KW - microporous compounds

KW - ion-exchange

KW - antiferromagnetism

KW - HYDROTHERMAL SYNTHESIS

KW - CRYSTAL-STRUCTURE

KW - ULM-12

KW - PORE

UR - http://www.scopus.com/inward/record.url?scp=0033163891&partnerID=8YFLogxK

M3 - Other contribution

VL - Sirie II

ER -

and magnetic properties of a 24-membered ring porous nickel(II) phosphate, VSB-1

Abstract

Keywords

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