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标题：FT-IR and TGA of MCF Silica-Supported Nickel Catalyst
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作者：L. Hermida ; A.Z. Abdullah ; A.R. Mohamed 等
期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2018
卷号：9
期号：8
页码：2328-2333
出版社：University of Mohammed Premier Oujda
摘要：In the present study, active site–support bonds in calcined and reduced catalysts ofMCF silica-supported nickel catalysts were investigated using FTIR analyses. FTIRresults show the presence of nickel phyllosilicate bonds (-O-Ni-O-Si) in the calcinedcatalysts.However, nickel phyllosilicate bonds were not detected in the reducedcatalysts indicating that nickel phyllosilicate bons were absence after reduction process.FTIR results confirmed the presence of Ni-O-Si bond in the reduced catalysts. TGAanalyses were also carried to investigate catalyst stability in terms of weight loss,thermal behaviour and structural destruction. According to the TGA results, driedcatalyst of MCF silica-supported nickel catalyst showed weight loss of around 9% in aregion from room temperature to 300 oC and weigh loss of 6% at above 300 oC.Weight loss from room temperature to 300 oC was ascribed to desorption of physisorbedand chemisorbed water. Meanwhile, weight loss at above 300 oC could be due to slowdecompositions of nickel phyllosilicate to the formation of nickel oxide.
关键词：Stability;Nickel incorporation;MCF;FT;IR;TGA;