1results about How to "High isomerization selectivity" patented technology

The application discloses a catalyst for producing low-haze lubricating oil base oil and a preparation method and application thereof. The catalyst contains hydrogen type ZSM-22 / ZSM-23 eutectic molecular sieve, and the mass content of the ZSM-22 molecular sieve in the hydrogen type ZSM-22 / ZSM-23 eutectic molecular sieve is 10-95%, preferably 15-90%. The preparation method of the catalyst comprises the following steps: (1) preparing hydrogen type ZSM-22 / ZSM-23 eutectic molecular sieve; (2) mixing, shaping, drying and calcining the hydrogen type ZSM-22 / ZSM-23 eutectic molecular sieve prepared in the step (1), macroporous alumina and a binder to obtain a carrier; and (3) introducing noble metal active components into the carrier obtained in the step (2) and obtaining the final catalyst after drying and calcining. The catalyst prepared by the method has high weak acid content and appropriate strong acid content, can improve the liquid yield, and greatly reduces the haze point of the lubricating oil base oil.