Synthesis and characterization of versatile MgO-ZrO2 mixed metal oxide nanoparticles and their applications

被引:136
|
作者
Gawande, Manoj B. [1 ]
Branco, Paula S. [1 ]
Parghi, Kalpesh [2 ]
Shrikhande, Janhavi J. [2 ]
Pandey, Rajesh Kumar [3 ]
Ghumman, C. A. A. [4 ]
Bundaleski, N. [4 ]
Teodoro, O. M. N. D. [4 ]
Jayaram, Radha V. [2 ]
机构
[1] Univ Nova Lisboa, Fac Sci & Technol, Dept Chem, REQUIMTE, P-2829516 Lisbon, Portugal
[2] Inst Chem Technol, Dept Chem, Bombay, Maharashtra, India
[3] Marquette Univ, Dept Chem, Milwaukee, WI 53233 USA
[4] Univ Nova Lisboa, FCT, Dept Fis, Ctr Phys & Technol Res CeFITec, P-2829516 Caparica, Portugal
关键词
AROMATIC NITRO-COMPOUNDS; CATALYTIC TRANSFER HYDROGENATION; N-BENZYLOXYCARBONYL DERIVATIVES; 1,5-BENZODIAZEPINE DERIVATIVES; CHEMOSELECTIVE REDUCTION; SELECTIVE REDUCTION; ALPHA; BETA-UNSATURATED CARBONYLS; KNOEVENAGEL CONDENSATION; EFFICIENT REAGENT; FACILE SYNTHESIS;
D O I
10.1039/c1cy00259g
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A heterogeneous, versatile nano-magnesia-zirconia or MgO-ZrO2 (MZ) catalyst was prepared by an ultra dilution method. The as-synthesised catalyst was characterized by several analytical techniques such as XRD, particle size analysis, BET surface area, thermogravimetric analysis (TGA), differential thermal analysis (DTA), FT-IR spectroscopy, SEM (scanning electron microscope), TEM (transmission electron microscope) and XPS (X-ray fluorescence spectroscopy). The surface area is found to be 268 m(2)g(-1). The catalytic activity of MZ was tested for various important organic reactions such as cross-aldol condensation, N-benzyloxycarbonylation of amines, reduction of aromatic nitrocompounds, and synthesis of 1,5-benzodiazepines. It has been observed that for all reactions MZ shows a good catalytic activity. All corresponding products were obtained in good to excellent yield under mild conditions. The MgO-ZrO2 catalyst can be prepared from inexpensive precursors, has high surface area, and is reusable and recyclable for all reactions.
引用
收藏
页码:1653 / 1664
页数:12
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