In Situ XRD, XAS, and Magnetic Susceptibility Study of the Reduction of Ammonium Nickel Phosphate NiNH4PO4·H2O into Nickel Phosphide
Тип публикации: Journal Article
Дата публикации: 2009-02-23
scimago Q1
wos Q1
БС1
SJR: 0.928
CiteScore: 7.6
Impact factor: 4.7
ISSN: 00201669, 1520510X
PubMed ID:
19236008
Inorganic Chemistry
Physical and Theoretical Chemistry
Краткое описание
The reduction of the ammonium nickel phosphate NiNH(4)PO(4) x H(2)O precursor into nickel phosphide (Ni(2)P), a highly active phase in hydrotreating catalysis, was studied using a combination of magnetic susceptibility and in situ X-ray diffraction and X-ray absorption spectroscopy (XAS) techniques. The transformation of NiNH(4)PO(4) x H(2)O into Ni(2)P could be divided into three distinguishable zones: (1) from room temperature to 250 degrees C, the NiNH(4)PO(4) x H(2)O structure was essentially retained; (2) from 300 to 500 degrees C, only an amorphous phase was observed; (3) above 500 degrees C, a crystallization process occurred with the formation of Ni(2)P. An in situ XAS study and magnetic susceptibility measurements clearly revealed for the first time that the amorphous region corresponds to the nickel pyrophosphate phase alpha-Ni(2)P(2)O(7). The phosphate reduction into phosphide did not start before 550 degrees C and led to the selective formation of Ni(2)P at 650 degrees C.
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Berhault G. et al. In Situ XRD, XAS, and Magnetic Susceptibility Study of the Reduction of Ammonium Nickel Phosphate NiNH4PO4·H2O into Nickel Phosphide // Inorganic Chemistry. 2009. Vol. 48. No. 7. pp. 2985-2992.
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Berhault G., Afanasiev P., Loboué H., Geantet C., Tivadar C., Pichon C., Guillot-Deudon C., Lafond A. In Situ XRD, XAS, and Magnetic Susceptibility Study of the Reduction of Ammonium Nickel Phosphate NiNH4PO4·H2O into Nickel Phosphide // Inorganic Chemistry. 2009. Vol. 48. No. 7. pp. 2985-2992.
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TY - JOUR
DO - 10.1021/ic802074k
UR - https://doi.org/10.1021/ic802074k
TI - In Situ XRD, XAS, and Magnetic Susceptibility Study of the Reduction of Ammonium Nickel Phosphate NiNH4PO4·H2O into Nickel Phosphide
T2 - Inorganic Chemistry
AU - Berhault, Gilles
AU - Afanasiev, Pavel
AU - Loboué, Hermione
AU - Geantet, Christophe
AU - Tivadar, Cseri
AU - Pichon, Christophe
AU - Guillot-Deudon, Catherine
AU - Lafond, Alain
PY - 2009
DA - 2009/02/23
PB - American Chemical Society (ACS)
SP - 2985-2992
IS - 7
VL - 48
PMID - 19236008
SN - 0020-1669
SN - 1520-510X
ER -
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@article{2009_Berhault,
author = {Gilles Berhault and Pavel Afanasiev and Hermione Loboué and Christophe Geantet and Cseri Tivadar and Christophe Pichon and Catherine Guillot-Deudon and Alain Lafond},
title = {In Situ XRD, XAS, and Magnetic Susceptibility Study of the Reduction of Ammonium Nickel Phosphate NiNH4PO4·H2O into Nickel Phosphide},
journal = {Inorganic Chemistry},
year = {2009},
volume = {48},
publisher = {American Chemical Society (ACS)},
month = {feb},
url = {https://doi.org/10.1021/ic802074k},
number = {7},
pages = {2985--2992},
doi = {10.1021/ic802074k}
}
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MLA
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Berhault, Gilles, et al. “In Situ XRD, XAS, and Magnetic Susceptibility Study of the Reduction of Ammonium Nickel Phosphate NiNH4PO4·H2O into Nickel Phosphide.” Inorganic Chemistry, vol. 48, no. 7, Feb. 2009, pp. 2985-2992. https://doi.org/10.1021/ic802074k.