Silica aerogel-supported copper catalyst prepared via ambient pressure drying process

Copper–silica aerogel catalyst was synthesized through the impregnation of silica alcogels by copper precursor and ambient pressure drying of the impregnated alcogels. In this safer and lower energy consumption drying mode for maintaining the gel structure, the solvent exchange and chemical surface...

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Bibliographic Details
Published in:	Journal of sol-gel science and technology Vol. 77; no. 3; pp. 627 - 635
Main Authors:	Yousefi Amiri, Taher, Moghaddas, Jafarsadegh, Rahmani Khajeh, Saeid
Format:	Journal Article
Language:	English
Published:	New York Springer US 01-03-2016 Springer Nature B.V
Subjects:	Aerogels Catalysis CATALYSTS Ceramics Chemical synthesis Chemistry and Materials Science Composites Copper COPPER OXIDE Copper oxides DRYING Energy consumption Exchange Glass Hydrogen production Inorganic Chemistry Materials Science Methyl alcohol Morphology Nanocrystals Nanoparticles Nanotechnology Natural Materials Optical and Electronic Materials Organic chemistry Original Paper PRESSURE Reforming Selectivity SILICON DIOXIDE Impregnation Methanol steam reforming Copper–silica aerogel catalyst Mesoprosity Sol–gel Ambient pressure drying
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Summary:	Copper–silica aerogel catalyst was synthesized through the impregnation of silica alcogels by copper precursor and ambient pressure drying of the impregnated alcogels. In this safer and lower energy consumption drying mode for maintaining the gel structure, the solvent exchange and chemical surface modification were done before the drying step. The prepared Cu/SiO 2 aerogels were characterized by AAS, XRD, FE-SEM, EDX, TEM, FTIR, BET and BJH techniques. Characterizations showed the complete surface modification, the presence of CuO nanocrystals, the relatively uniform dispersion of copper, the catalysts consisted of the nanoparticles, the homogeneous surface morphology, the large surface area (511–652 m 2 /g) and the high pore volume (~2.7 cm 3 g) and mesoporosity which are the attractive properties of aerogels as catalyst. Also, the activity and selectivity of aerogel catalysts were studied in the hydrogen production process through methanol steam reforming reaction which showed good results. Graphical Abstract
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0928-0707 1573-4846
DOI:	10.1007/s10971-015-3892-0