Molecular sieve organic oxide adsorbent as well as preparation method and application thereof

The invention provides a molecular sieve organic oxide adsorbent and a preparation method and application thereof, and the preparation method comprises the following steps: preparing a seed crystal by controlling the pH value and a two-stage crystallization process, carrying out aluminum dissolving and silicon dissolving treatment by taking a molecular sieve-containing material as a raw material and regulating the ratio of each raw material, and mixing the two materials to prepare a mother solution, then carrying out aging treatment and hydrothermal crystallization treatment to prepare the 13X molecular sieve with high silica-alumina ratio and excellent specific surface area and pore capacity. A 13X molecular sieve is subjected to carbon modification treatment, organic silicon is introduced into the 13X molecular sieve through reaction with an organic silicon coupling agent and calcination treatment, and the adsorbent with excellent adsorption performance on organic oxides is obtained through copper salt solu