A.L. Maksimov is one of Russia's leading scientists in the field of oil refining, petrochemistry and catalysis. Under his leadership, discovery research to develop new processes of hydrogenation, hydrodearomatization, hydroisomerization, hydrocracking of petroleum fractions using nano-heterogeneous catalysts is being carried out. Work is underway to create catalysts and processes for selective hydrogenation, hydroisomerization, oxidation, tandem transformations of hydrocarbons, oxo-synthesis. Research works in the field of hydrogen technologies, gas chemistry, catalytic conversion of carbon dioxide, processing of polymer waste and renewable raw materials are evolved.