In this work, we present a synthesis of a catalyst derived from phosphomolybdenum vanadic acid supported on cesium‑ion‑promoted KSKG silica gel and studied its morphology. X‑ray fluorescence analysis, cryoporometry, and thermogravimetric analysis were used to study the composition, textural characteristics, and thermal stability of this system. We found homogeneous distribution of the active phase, decreased specific surface area due to pore occupation, and the formation of a heat‑resistant structure after calcination at 400°C.