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Title: NiAl{sub 2}O{sub 4} catalysts prepared by combustion reaction using glycine as fuel

Abstract

Graphical abstract: The reaction temperature was found to remain is practically constant throughout the interval preceding ignition, after which the temperature increased abruptly, reaching the maximum combustion temperature. All the reactions occurred in a matter of minutes, i.e., 5.8, 5.8 and 6 min, respectively, for compositions GES, 10GE and 20GE. Among the benefits of the combustion synthesis method are low processing cost, energy efficiency, high production rate and, especially, short reaction periods when compared with conventional methods (solid state reaction) to prepare ceramic oxide powders that require high calcination temperatures and long reaction periods. Highlights: {yields} We use a simple, fast and inexpensive technique for processing NiAl{sub 2}O{sub 4} catalyst nanopowders. {yields} We study the preparation of powders with nanometric sized particles. {yields} This material is extremely attractive for use in the development of new catalysts for a variety of chemical processes. {yields} Nanometric sized particles depend of the amount of glycine used in the synthesis process. -- Abstract: The aim of this work is to evaluate the influence of glycine fuel used in a stoichiometric proportion and with a 10% and 20% excess of this fuel in the preparation of NiAl{sub 2}O{sub 4} catalyst by combustion reaction. The powdersmore » were characterized by XRD, textural analysis by the BET nitrogen adsorption method, particle size distribution, and FTIR. The results show the presence of NiAl{sub 2}O{sub 4} as a major phase and traces of NiO and Ni in all the catalysts studied here. The crystallite sizes were 22 nm in the stoichiometric composition and 18 and 9 nm, respectively, in the composition containing 10% and 20% excess glycine. The powder obtained from all the compositions presented morphological characteristics with irregular plate-shaped agglomerates. The increase in excess glycine caused the particle size in the three compositions to decrease to 59, 54 and 38 nm and the agglomerate size to increase to 7, 8 and 12 {mu}m, respectively.« less

Authors:
 [1];  [1]; ;  [1];  [2];  [1]
  1. Department of Materials Engineering - UFCG, Av. Aprigio Veloso - 882, Bodocongo, 58109-970 Campina Grande, PB (Brazil)
  2. Department of Materials Engineering - UFSC, Rod. Washington Luiz, km 235, 13565-905 Sao Carlos, SP (Brazil)
Publication Date:
OSTI Identifier:
22212237
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 46; Journal Issue: 9; Other Information: Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ADSORPTION; CATALYSTS; CERAMICS; COMBUSTION; ENERGY EFFICIENCY; FOURIER TRANSFORMATION; GLYCINE; INFRARED SPECTRA; NANOSTRUCTURES; NICKEL OXIDES; PARTICLE SIZE; PARTICLES; POWDERS; SOLIDS; SYNTHESIS; X-RAY DIFFRACTION

Citation Formats

Leal, Elvia, Figueiredo de Melo Costa, Ana Cristina, E-mail: anacristina@dema.ufcg.edu.br, Lino de Freita, Normanda, Lucena Lira, Helio de, Goldschmidt Aliaga Kiminami, Ruth Herta, and Gama, Lucianna. NiAl{sub 2}O{sub 4} catalysts prepared by combustion reaction using glycine as fuel. United States: N. p., 2011. Web. doi:10.1016/J.MATERRESBULL.2011.05.011.
Leal, Elvia, Figueiredo de Melo Costa, Ana Cristina, E-mail: anacristina@dema.ufcg.edu.br, Lino de Freita, Normanda, Lucena Lira, Helio de, Goldschmidt Aliaga Kiminami, Ruth Herta, & Gama, Lucianna. NiAl{sub 2}O{sub 4} catalysts prepared by combustion reaction using glycine as fuel. United States. doi:10.1016/J.MATERRESBULL.2011.05.011.
Leal, Elvia, Figueiredo de Melo Costa, Ana Cristina, E-mail: anacristina@dema.ufcg.edu.br, Lino de Freita, Normanda, Lucena Lira, Helio de, Goldschmidt Aliaga Kiminami, Ruth Herta, and Gama, Lucianna. Thu . "NiAl{sub 2}O{sub 4} catalysts prepared by combustion reaction using glycine as fuel". United States. doi:10.1016/J.MATERRESBULL.2011.05.011.
@article{osti_22212237,
title = {NiAl{sub 2}O{sub 4} catalysts prepared by combustion reaction using glycine as fuel},
author = {Leal, Elvia and Figueiredo de Melo Costa, Ana Cristina, E-mail: anacristina@dema.ufcg.edu.br and Lino de Freita, Normanda and Lucena Lira, Helio de and Goldschmidt Aliaga Kiminami, Ruth Herta and Gama, Lucianna},
abstractNote = {Graphical abstract: The reaction temperature was found to remain is practically constant throughout the interval preceding ignition, after which the temperature increased abruptly, reaching the maximum combustion temperature. All the reactions occurred in a matter of minutes, i.e., 5.8, 5.8 and 6 min, respectively, for compositions GES, 10GE and 20GE. Among the benefits of the combustion synthesis method are low processing cost, energy efficiency, high production rate and, especially, short reaction periods when compared with conventional methods (solid state reaction) to prepare ceramic oxide powders that require high calcination temperatures and long reaction periods. Highlights: {yields} We use a simple, fast and inexpensive technique for processing NiAl{sub 2}O{sub 4} catalyst nanopowders. {yields} We study the preparation of powders with nanometric sized particles. {yields} This material is extremely attractive for use in the development of new catalysts for a variety of chemical processes. {yields} Nanometric sized particles depend of the amount of glycine used in the synthesis process. -- Abstract: The aim of this work is to evaluate the influence of glycine fuel used in a stoichiometric proportion and with a 10% and 20% excess of this fuel in the preparation of NiAl{sub 2}O{sub 4} catalyst by combustion reaction. The powders were characterized by XRD, textural analysis by the BET nitrogen adsorption method, particle size distribution, and FTIR. The results show the presence of NiAl{sub 2}O{sub 4} as a major phase and traces of NiO and Ni in all the catalysts studied here. The crystallite sizes were 22 nm in the stoichiometric composition and 18 and 9 nm, respectively, in the composition containing 10% and 20% excess glycine. The powder obtained from all the compositions presented morphological characteristics with irregular plate-shaped agglomerates. The increase in excess glycine caused the particle size in the three compositions to decrease to 59, 54 and 38 nm and the agglomerate size to increase to 7, 8 and 12 {mu}m, respectively.},
doi = {10.1016/J.MATERRESBULL.2011.05.011},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 9,
volume = 46,
place = {United States},
year = {2011},
month = {9}
}