|
چکیده
|
In this study, taking into account the principles of green chemistry and extension of economical and industrials catalysts (as the heart of the chemical processes), coppergrafted zagrosian natural asphalt sulfonate (Cu-Zagronas) was synthesized, identified and introduced as a new efficient heterogeneous nanocatalyst for the synthesis of phenols and anilines. For preparation of the Cu-Zagronas nanocatalyst, we transform Iranian natural asphalt as a green, cheap and available mineral material into a support for organic transformations. The Cu-Zagronas nanocatalyst was characterized by various techniques such as Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscope, energy-dispersive X-ray spectroscopy, thermogravimetric analysis, X-ray diffraction, inductively coupled plasma and N2adsorption–desorption measurement. Some advantages of this heterogeneous nanocatalyst include: simple preparation from commercially available materials, simple operation, high catalytic activity, high yields, easy work-up and recyclability of the catalyst up to 6 times without significant loss in catalyticactivity
|