Effect of Hydrothermal Synthesis Conditions on the Metal–Polymer System Structure and the Metallic Phase Composition

Nickel- and cobalt-containing particles immobilized on a polymer support (hypercrosslinked polystyrene) by the hydrothermal method are studied. The composition, structure, and morphology of the synthesized metal–polymer composites are analyzed. It is shown that hydrothermal synthesis provides the formation of metal–polymer composites with a uniformly distributed metal-containing phase without significant changes in the composition and structure of the polymer support. It is found that, under conditions of superheated water, the pore structure of the support undergoes rearrangement to form pores with a diameter of 20–100 nm; this is one of the key factors for many catalytic processes involving large molecules.