首页 | 本学科首页   官方微博 | 高级检索  
     


NiAl2O4 catalysts prepared by combustion reaction using glycine as fuel
Authors:Elvia Leal  Normanda Lino de Freita  Ruth Herta Goldschmidt Aliaga Kiminami
Affiliation:a Department of Materials Engineering - UFCG, Av. Aprígio Veloso - 882, Bodocongó, 58109-970 Campina Grande, PB, Brazil
b Department of Materials Engineering - UFSC, Rod. Washington Luiz, km 235, 13565-905 São Carlos, SP, Brazil
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 NiAl2O4 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 NiAl2O4 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 μm, respectively.
Keywords:
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号