کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
150753 456456 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Oxovanadium(IV) salophen complex covalently anchored to multi-wall carbon nanotubes (MWNTs) as heterogeneous catalyst for oxidation of cyclooctene
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Oxovanadium(IV) salophen complex covalently anchored to multi-wall carbon nanotubes (MWNTs) as heterogeneous catalyst for oxidation of cyclooctene
چکیده انگلیسی

The chemical modification of multi-wall carbon nanotubes (MWNTs) is an emerging area in material science. In the present study, hydroxyl functionalized oxovanadium(IV) Schiff-base; (N,N-bis(4-hydroxysalicylidene)phenylene-1,2-diamine)oxovanadium(IV), [VO((OH)2-salophen)]; has been covalently anchored on modified MWNTs. The new modified MWNTs ([VO((OH)2-salophen)]@MWNTs]) have been characterized by transmission electron microscopy (TEM), atomic absorption spectroscopic (AAS) analysis, X-ray diffraction (XRD), Diffuse reflectance (DRS) UV–vis, FT-IR spectroscopy and elemental analysis. The analytical data indicated a composition corresponding to the mononuclear complex of tetradentate Schiff-base ligand. The characterization of the data showed the absence of extraneous complex, retention of MWNTs and covalently anchored on modified MWNTs. Liquid-phase oxidation of cyclooctene with molecular oxygen to a mixture of cyclooctene-1-one, cyclooctene-1-ol and cyclooctene epoxide in CH3CN have been reported using oxovanadium(IV) Schiff-base complex covalently anchored on modified MWNTs as catalysts.


► [VO(OH)2-salophen] complex was covalently grafted on the MWNTs.
► The catalytic activity was tested in the oxidation of cyclooctene.
► Nanocomposites indicate good catalytic activity and selectivity in the oxidation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 173, Issue 2, 15 September 2011, Pages 651–658
نویسندگان
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