Synthesis of Mesoporous Silica Gel Doped with Dysprosium and Modified with Nickel and Study of Its Selectivity in the Catalytic Hydrogenation of a Benzene and Its Derivatives

The work studied the hydrogenation of benzene and its derivatives on the mesoporous silica gel synthesized by the template method, doped with dysprosium and modified with nickel nanoparticles. The surface morphology and texture characteristics of the obtained sample were studied by scanning and transmission electron microscopy, X-ray phase analysis, and inductively coupled plasma mass spectrometry. The catalytic activity and selectivity of the obtained catalyst in the hydrogenation reaction of a mixture with an equal content of benzene, ethylbenzene,p-,o-xylenes in the temperature range of 100-170 degrees C at a pressure of 3 atm was studied. It was found that the obtained catalyst selectively hydrogenates benzene in a mixture with its derivatives to cyclohexane.