The invention relates to the field of petrochemical engineering catalysts and discloses a silicon dioxide extrusion moulding method, a silicon dioxide bar-shaped agent prepared by the method, and application of the silicon dioxide bar-shaped agent in catalysts. The silicon dioxide extrusion moulding method includes the steps of firstly, kneading silicon dioxide powder, starch containing protein, silica sol, optional dilute nitric acid and water to obtain plastomer; secondly, subjecting the plastomer to extrusion moulding to obtain a wet formed body; thirdly, drying and calcining the wet formedbody to obtain the silicon dioxide bar-shaped agent. By the method, the prepared silicon dioxide bar-shaped agent is uniform in surface, less prone to adhering and high in radial average mechanical strength.

Zhang Mingsen

Papers

Silicon dioxide bar-shaped agent and extrusion moulding method and application thereof