NDLI: Vapor phase selective hydrogenation of acetone to methyl isobutyl ketone (MIBK) over Ni/CeO<sub>2</sub> catalysts

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Vapor phase selective hydrogenation of acetone to methyl isobutyl ketone (MIBK) over Ni/CeO₂ catalysts

Content Provider	Royal Society of Chemistry (RSC)
Author	Rao, Pendyala Venkat Ramana Rao, Ginjupalli Srinivasa Chary, Komandur V. R. Kumar, Vanama Pavan
Copyright Year	2012
Abstract	Ceria supported nickel oxide catalysts with varying nickel loadings from 1.0 to 20.0 wt% were prepared by the impregnation method. The catalysts were characterized by X-ray diffraction (XRD), UV-visible diffuse reflectance spectroscopy (UV-DRS), temperature programmed reduction (TPR), temperature programmed desorption (TPD) of CO2, and surface area measurements. The dispersion of nickel and metal area were determined by the hydrogen chemisorption method. The X-ray diffraction patterns suggest the presence of crystalline NiO phase beyond 2.5 wt% of Ni on ceria. The UV-visible diffuse reflectance spectra reveal the presence of two types of nickel species on the CeO2 support. TPR patterns reveal the presence of highly dispersed surface free nickel oxide species at lower temperatures and bulk NiO at higher temperatures. The basicity of the catalysts measured by the CO2 TPD method was found to increase with an increase in nickel loading up to 2.5 wt% and decrease with further increase in nickel loading. The vapor phase condensation and selective hydrogenation of acetone to methyl isobutyl ketone (MIBK) were carried out on Ni/CeO2 catalysts and the catalytic properties are correlated with the results of CO2 TPD measurements and also with the dispersion of the nickel species supported on ceria.
Starting Page	1665
Ending Page	1673
Page Count	9
File Format	HTM / HTML PDF
ISSN	20444753
Volume Number	2
Issue Number	8
Journal	Catalysis Science & Technology
DOI	10.1039/c2cy20021j
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	X-ray crystallography Spectroscopy Chemisorption Hydrogen Ceria Cerium(IV) oxide Nickel Hydrogenation Methyl isobutyl ketone London dispersion force Acetone
Content Type	Text
Resource Type	Article
Subject	Catalysis

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