The active phase (NI 2+) distribution in NI/γ-Al 2O 3 catalysts prepared by impregnation of Bis(ethylenediamine)nickel(II) complexes

Ponminiessary P. Robinson; Vasudevan Arun; Karukapadath K.Abdul Rashid; Chennampilly Ummer Aniz; Karukapadath K.M. Yusuff

doi:10.1080/00986445.2011.591615

The active phase (NI ²⁺) distribution in NI/γ-Al ₂O ₃ catalysts prepared by impregnation of Bis(ethylenediamine)nickel(II) complexes

Ponminiessary P. Robinson
, Vasudevan Arun
, Karukapadath K.Abdul Rashid
, Chennampilly Ummer Aniz
, Karukapadath K.M. Yusuff

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

5 Scopus citations

Abstract

Pore volume and wet impregnations were carried on γ-Al ₂O ₃ support spheres using [Ni(H ₂O) ₆](NO ₃) ₂ and [Ni(en) ₂(H ₂O) ₂]X ₂ complexes, where en = ethylenediamine and X = NO ^- ₃ Cl ^-, or CH ₃COO ^-. The distribution of nickel on the support was studied by optical microscopy and SEM-EDX. The use of ethylenediamine complexes leads to samples with nearly uniform profiles. The distribution is dependent on interaction of complexes with alumina, changes in viscosity during drying, and crystallization volume. Redistribution during drying is minimal for the ethylenediamine complexes. The study illustrates that increase in viscosity retards the convection distribution to outward migration. Cyclohexanol decomposition was studied as a test reaction and the results demonstrate that the macrodistribution of nickel oxide phase influences the product distribution.

Original language	English
Pages (from-to)	321-334
Number of pages	14
Journal	Chemical Engineering Communications
Volume	199
Issue number	3
DOIs	https://doi.org/10.1080/00986445.2011.591615
State	Published - Mar 2012
Externally published	Yes

Keywords

Cyclohexanol decomposition
Distribution profile
Ethylenediamine complexes
Impregnation
Viscosity

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering

Access to Document

10.1080/00986445.2011.591615

Cite this

@article{776834cd15174554a25df6e0b1461927,

title = "The active phase (NI 2+) distribution in NI/γ-Al 2O 3 catalysts prepared by impregnation of Bis(ethylenediamine)nickel(II) complexes",

abstract = "Pore volume and wet impregnations were carried on γ-Al 2O 3 support spheres using [Ni(H 2O) 6](NO 3) 2 and [Ni(en) 2(H 2O) 2]X 2 complexes, where en = ethylenediamine and X = NO - 3 Cl -, or CH 3COO -. The distribution of nickel on the support was studied by optical microscopy and SEM-EDX. The use of ethylenediamine complexes leads to samples with nearly uniform profiles. The distribution is dependent on interaction of complexes with alumina, changes in viscosity during drying, and crystallization volume. Redistribution during drying is minimal for the ethylenediamine complexes. The study illustrates that increase in viscosity retards the convection distribution to outward migration. Cyclohexanol decomposition was studied as a test reaction and the results demonstrate that the macrodistribution of nickel oxide phase influences the product distribution.",

keywords = "Cyclohexanol decomposition, Distribution profile, Ethylenediamine complexes, Impregnation, Viscosity",

author = "Robinson, \{Ponminiessary P.\} and Vasudevan Arun and Rashid, \{Karukapadath K.Abdul\} and Aniz, \{Chennampilly Ummer\} and Yusuff, \{Karukapadath K.M.\}",

year = "2012",

month = mar,

doi = "10.1080/00986445.2011.591615",

language = "English",

volume = "199",

pages = "321--334",

journal = "Chemical Engineering Communications",

issn = "0098-6445",

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TY - JOUR

T1 - The active phase (NI 2+) distribution in NI/γ-Al 2O 3 catalysts prepared by impregnation of Bis(ethylenediamine)nickel(II) complexes

AU - Robinson, Ponminiessary P.

AU - Arun, Vasudevan

AU - Rashid, Karukapadath K.Abdul

AU - Aniz, Chennampilly Ummer

AU - Yusuff, Karukapadath K.M.

PY - 2012/3

Y1 - 2012/3

N2 - Pore volume and wet impregnations were carried on γ-Al 2O 3 support spheres using [Ni(H 2O) 6](NO 3) 2 and [Ni(en) 2(H 2O) 2]X 2 complexes, where en = ethylenediamine and X = NO - 3 Cl -, or CH 3COO -. The distribution of nickel on the support was studied by optical microscopy and SEM-EDX. The use of ethylenediamine complexes leads to samples with nearly uniform profiles. The distribution is dependent on interaction of complexes with alumina, changes in viscosity during drying, and crystallization volume. Redistribution during drying is minimal for the ethylenediamine complexes. The study illustrates that increase in viscosity retards the convection distribution to outward migration. Cyclohexanol decomposition was studied as a test reaction and the results demonstrate that the macrodistribution of nickel oxide phase influences the product distribution.

AB - Pore volume and wet impregnations were carried on γ-Al 2O 3 support spheres using [Ni(H 2O) 6](NO 3) 2 and [Ni(en) 2(H 2O) 2]X 2 complexes, where en = ethylenediamine and X = NO - 3 Cl -, or CH 3COO -. The distribution of nickel on the support was studied by optical microscopy and SEM-EDX. The use of ethylenediamine complexes leads to samples with nearly uniform profiles. The distribution is dependent on interaction of complexes with alumina, changes in viscosity during drying, and crystallization volume. Redistribution during drying is minimal for the ethylenediamine complexes. The study illustrates that increase in viscosity retards the convection distribution to outward migration. Cyclohexanol decomposition was studied as a test reaction and the results demonstrate that the macrodistribution of nickel oxide phase influences the product distribution.

KW - Cyclohexanol decomposition

KW - Distribution profile

KW - Ethylenediamine complexes

KW - Impregnation

KW - Viscosity

UR - https://www.scopus.com/pages/publications/84857003207

U2 - 10.1080/00986445.2011.591615

DO - 10.1080/00986445.2011.591615

M3 - Article

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SN - 0098-6445

VL - 199

SP - 321

EP - 334

JO - Chemical Engineering Communications

JF - Chemical Engineering Communications

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