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Synthesis and catalytic activity of Ni°-acid activated montmorillonite nanoparticles
Abstract Ni°-nanoparticles of 0–8nm were prepared in situ by impregnation of Ni(CH3COO)2 into the nanopores of modified montmorillonite (Mt) followed by polyol reduction. The Mt was activated with HCl under controlled condition for generating desired pore sizes. The porous materials were characterized by XRD, TEM, SEM, UV–visible spectroscopy, FTIR and XPS analysis. N2 adsorption data revealed specific surface areas (BET) in the range of 296–548m2/g, specific pore volumes of 0.4–0.6cm3/g and pore diameters of 0–6.8nm. XRD pattern of Ni°-nanoparticles revealed the formation of face centered cubic (fcc) lattice. These supported Nio-nanoparticles show efficient catalytic activity in transfer hydrogenation of acetophenone to 1-phenylethanol with about 98% conversion, having nearly 100% selectivity.
Graphical abstract Ni°-nanoparticles in the size range 0–8nm have been synthesized into the nanopores of modified montmorillonite. These clay supported Ni°-nanoparticles showed efficient catalytic activity in transfer hydrogenation of acetophenone to 1-phenylethanol in presence of isopropanol as hydrogen donor and NaOH as base, yielding about 98% conversion and 100% selectivity. Display Omitted Research highlights ► Generation of nanopores in montmorillonite. ► Synthesis of Ni°-nanoparticles into the nanoporous montmorillonite. ► Catalytic transfer hydrogenation reaction.
Synthesis and catalytic activity of Ni°-acid activated montmorillonite nanoparticles
Abstract Ni°-nanoparticles of 0–8nm were prepared in situ by impregnation of Ni(CH3COO)2 into the nanopores of modified montmorillonite (Mt) followed by polyol reduction. The Mt was activated with HCl under controlled condition for generating desired pore sizes. The porous materials were characterized by XRD, TEM, SEM, UV–visible spectroscopy, FTIR and XPS analysis. N2 adsorption data revealed specific surface areas (BET) in the range of 296–548m2/g, specific pore volumes of 0.4–0.6cm3/g and pore diameters of 0–6.8nm. XRD pattern of Ni°-nanoparticles revealed the formation of face centered cubic (fcc) lattice. These supported Nio-nanoparticles show efficient catalytic activity in transfer hydrogenation of acetophenone to 1-phenylethanol with about 98% conversion, having nearly 100% selectivity.
Graphical abstract Ni°-nanoparticles in the size range 0–8nm have been synthesized into the nanopores of modified montmorillonite. These clay supported Ni°-nanoparticles showed efficient catalytic activity in transfer hydrogenation of acetophenone to 1-phenylethanol in presence of isopropanol as hydrogen donor and NaOH as base, yielding about 98% conversion and 100% selectivity. Display Omitted Research highlights ► Generation of nanopores in montmorillonite. ► Synthesis of Ni°-nanoparticles into the nanoporous montmorillonite. ► Catalytic transfer hydrogenation reaction.
Synthesis and catalytic activity of Ni°-acid activated montmorillonite nanoparticles
Dutta, Dipanka (Autor:in) / Borah, Bibek Jyoti (Autor:in) / Saikia, Lakshi (Autor:in) / Pathak, Madan Gopal (Autor:in) / Sengupta, Pinaki (Autor:in) / Dutta, Dipak Kumar (Autor:in)
Applied Clay Science ; 53 ; 650-656
20.05.2011
7 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Synthesis and catalytic activity of Ni°-acid activated montmorillonite nanoparticles
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