How nitric oxide affects the decomposition of supported nickel nitrate to arrive at highly dispersed catalysts

J.R.A. Sietsma; H. Friedrich; A. Broersma; M. Versluijs-Helder; A.J. van Dillen; P.E. de Jongh; K.P. de Jong

How nitric oxide affects the decomposition of supported nickel nitrate to arrive at highly dispersed catalysts

J.R.A. Sietsma, H. Friedrich, A. Broersma, M. Versluijs-Helder, A.J. van Dillen, P.E. de Jongh, K.P. de Jong

Dept of Chemistry

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

An explanation is put forward for the beneficial effect of thermal decomposition of supported Ni3(NO3)2(OH)4 in NO/He flow (0.1–1 vol%) that enables preparation of well-dispersed (3–5 nm particles) 24 wt% Ni-catalysts via impregnation and drying using aqueous [Ni(OH2)6](NO3)2 precursor solution. Moreover, combining electron tomography, XRD and N2-physisorption with SBA-15 support yielded a clear picture of the impact of air, He and NO/He gas atmospheres on NiO shape and distribution. TGA/MS indicated that NO2, N2O, H2O products evolved more gradually in NO/He. In situ XRD and DSC revealed that NO lowers the nitrate decomposition rate and appears less endothermic than in air supposedly due to exothermic scavenging of oxygen by NO, which is supported by MS results. The Ni/SiO2 catalyst prepared via the NO-method displayed a higher activity in the hydrogenation of soybean oil as the required hydrogenation time decreased by 30% compared to the traditionally air calcined catalyst.

Original language	Undefined/Unknown
Pages (from-to)	227-235
Number of pages	9
Journal	Journal of Catalysis
Volume	260
Publication status	Published - 2008

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Cite this

@article{73ea04c6092941c0ba18ed5e984a1819,

title = "How nitric oxide affects the decomposition of supported nickel nitrate to arrive at highly dispersed catalysts",

abstract = "An explanation is put forward for the beneficial effect of thermal decomposition of supported Ni3(NO3)2(OH)4 in NO/He flow (0.1–1 vol%) that enables preparation of well-dispersed (3–5 nm particles) 24 wt% Ni-catalysts via impregnation and drying using aqueous [Ni(OH2)6](NO3)2 precursor solution. Moreover, combining electron tomography, XRD and N2-physisorption with SBA-15 support yielded a clear picture of the impact of air, He and NO/He gas atmospheres on NiO shape and distribution. TGA/MS indicated that NO2, N2O, H2O products evolved more gradually in NO/He. In situ XRD and DSC revealed that NO lowers the nitrate decomposition rate and appears less endothermic than in air supposedly due to exothermic scavenging of oxygen by NO, which is supported by MS results. The Ni/SiO2 catalyst prepared via the NO-method displayed a higher activity in the hydrogenation of soybean oil as the required hydrogenation time decreased by 30% compared to the traditionally air calcined catalyst.",

author = "J.R.A. Sietsma and H. Friedrich and A. Broersma and M. Versluijs-Helder and {van Dillen}, A.J. and {de Jongh}, P.E. and {de Jong}, K.P.",

year = "2008",

language = "Undefined/Unknown",

volume = "260",

pages = "227--235",

journal = "Journal of Catalysis",

issn = "0021-9517",

publisher = "Academic Press Inc.",

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TY - JOUR

T1 - How nitric oxide affects the decomposition of supported nickel nitrate to arrive at highly dispersed catalysts

AU - Sietsma, J.R.A.

AU - Friedrich, H.

AU - Broersma, A.

AU - Versluijs-Helder, M.

AU - van Dillen, A.J.

AU - de Jongh, P.E.

AU - de Jong, K.P.

PY - 2008

Y1 - 2008

N2 - An explanation is put forward for the beneficial effect of thermal decomposition of supported Ni3(NO3)2(OH)4 in NO/He flow (0.1–1 vol%) that enables preparation of well-dispersed (3–5 nm particles) 24 wt% Ni-catalysts via impregnation and drying using aqueous [Ni(OH2)6](NO3)2 precursor solution. Moreover, combining electron tomography, XRD and N2-physisorption with SBA-15 support yielded a clear picture of the impact of air, He and NO/He gas atmospheres on NiO shape and distribution. TGA/MS indicated that NO2, N2O, H2O products evolved more gradually in NO/He. In situ XRD and DSC revealed that NO lowers the nitrate decomposition rate and appears less endothermic than in air supposedly due to exothermic scavenging of oxygen by NO, which is supported by MS results. The Ni/SiO2 catalyst prepared via the NO-method displayed a higher activity in the hydrogenation of soybean oil as the required hydrogenation time decreased by 30% compared to the traditionally air calcined catalyst.

AB - An explanation is put forward for the beneficial effect of thermal decomposition of supported Ni3(NO3)2(OH)4 in NO/He flow (0.1–1 vol%) that enables preparation of well-dispersed (3–5 nm particles) 24 wt% Ni-catalysts via impregnation and drying using aqueous [Ni(OH2)6](NO3)2 precursor solution. Moreover, combining electron tomography, XRD and N2-physisorption with SBA-15 support yielded a clear picture of the impact of air, He and NO/He gas atmospheres on NiO shape and distribution. TGA/MS indicated that NO2, N2O, H2O products evolved more gradually in NO/He. In situ XRD and DSC revealed that NO lowers the nitrate decomposition rate and appears less endothermic than in air supposedly due to exothermic scavenging of oxygen by NO, which is supported by MS results. The Ni/SiO2 catalyst prepared via the NO-method displayed a higher activity in the hydrogenation of soybean oil as the required hydrogenation time decreased by 30% compared to the traditionally air calcined catalyst.

M3 - Article

SN - 0021-9517

VL - 260

SP - 227

EP - 235

JO - Journal of Catalysis

JF - Journal of Catalysis

ER -