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Catalytic Conversion of Methanol to Formaldehyde Over La2CuO4 Nanoparticles

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La2CuO4 (LCO) perovskite nanoparticle was synthesized by microwave assisted combustion method and characterized using X-ray diffraction (XRD), diffuse reflectance spectroscopy (DRS), Fourier transformed infrared spectroscopy (FT-IR), high resolution scanning electron microscopy (HR-SEM) and energy dispersive X-ray analysis (EDX), respectively. The XRD confirmed the formation of a single orthorhombic phase. The average crystallite size of LCO samples were 39.6 nm and 46.4 nm. This LCO perovskite nanoparticle was evaluated for the conversion of methanol to formaldehyde in liquid phase batch reactor at atmospheric conditions. The conversions were studied by using different solvents like dimethyl sulfoxide (DMSO), acetonitrile, n-hexane, and temperature varying from 60 °C to 90 °C and reaction time from 1 to 4 h duration. 50 mg of catalyst, 50 mmol of DMSO, 50 mmol of methanol, temperature at 70 °C and 4 h duration was the optimized condition to achieve 100% methanol conversion and 98% selectivity of formaldehyde. The reaction pathway of methanol to formaldehyde conversion is discussed.
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Keywords: Formaldehyde; La2CuO4 Nanostructure; Methanol; Selective Oxidation; X-ray Diffraction

Document Type: Research Article

Affiliations: Materials and Physics Division, School of Advanced Sciences, Vellore Institute of Technology (VIT), Chennai Campus, Chennai 600127, Tamil Nadu, India

Publication date: February 1, 2019

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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