Effect of the Low-Frequency Sound Vibrations on the Structural and Morphological Properties of the Industrial Catalysts for the Carbon Oxides’ Hydrogenation

One of the ways to improve the catalytic activity of copper-zinc-aluminum oxide catalyst is the influence of external factors (proton current, acoustic agitation, ultrasound, mechanical force etc.) in situ. Thus, the aim of our work is to study the effect of the low-frequency sound vibrations on the physico-chemical properties of the industrial copper-zinc-aluminum oxide catalyst. The structure and surface properties of the industrial methanol synthesis catalyst trademark SNM-U before and after exposure to low-frequency sound vibrations in situ were studied in detail by various characteristic technologies, such as X-ray diffraction, scanning electron microscopy, nitrogen porosimetry, Fourier-transform infrared spectroscopy, thermogravimetric analysis and differential scanning calorimetry. We demonstrate the dependence of the structure and morphological features of the SNM-U catalyst on influence of low-frequency sound vibrations in situ. Based on the experimental observations, a change in crystallite size is established depending on the presence of external influence. We showed the role of the low-frequency sound vibrations in situ on changing the porous characteristics of copper-zinc-aluminum oxide catalyst in the hydrogenation reaction of carbon oxides. It was established that according to the latest indicators, the catalyst seems to have just been restored, and has not worked for several hundred hours.