کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
59167 1419451 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Au/γ-MnO2 catalyst for solvent-free toluene oxidation with oxygen
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Au/γ-MnO2 catalyst for solvent-free toluene oxidation with oxygen
چکیده انگلیسی

α-, δ-, and γ-MnO2 were synthesized by a redox method and Au/γ-MnO2 catalysts with different Au loadings (0.5%–3.0%) were synthesized by an in situ reduction method. The supports and catalysts were characterized by X-ray diffraction, scanning electron microscope, transmission electron microscopy (TEM), and N2 adsorption. TEM images showed that the Au particles were about 10 nm. The catalysts were used in solvent-free toluene oxidation with oxygen. The results showed that toluene conversion increased with increasing Au loading, which was ascribed to the increasing amount of Au particles and also the smaller Au particles. The Au loading gave a uniquely high selectivity to benzaldehyde. The Au/γ-MnO2 catalysts exhibited good reusability in liquid phase toluene oxidation.

Graphical AbstractWell dispersed Au/γ-MnO2 catalysts have been prepared by an in situ reduction method. They showed unique selectivity towards benzaldehyde in toluene oxidation.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chinese Journal of Catalysis - Volume 34, Issue 9, September 2013, Pages 1683–1689
نویسندگان
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