Korea Research Institute of Chemical Technology

Hanwha Total Petrochemical Co., Ltd.

Jo Yong Park

Kyoung Su Ha

Ki Won Jun

Ki-Won Jun

Yun-Jo Lee

Jin Suk Lee

Yun Jo Lee

Ho Sik Chang

Jong-Wook Bae

Yeon Shick Yoo

Jeong Rang Kim

Provided is a preparation method for a mesoporous zeolite, particularly a method for preparing mesoporous zeolite through a simple process without using costly materials such as an organic amine template or a surfactant. The method includes 1) forming a synthetic zeolite gel by mixing a silica precursor, an aluminum precursor and water and aging the resulted mixture; 2) carrying out zeolite synthesis by subjecting the synthetic zeolite gel to a hydrothermal reaction; 3) cooling the synthesized zeolite from the above step 2), then adding a basic solution thereto and allowing them to react, thereby obtaining a mesoporous zeolite slurry; and 4) washing the mesoporous zeolite slurry with water, drying and firing it, thereby obtaining a mesoporous zeolite.

Method for preparation of mesoporous zeolites

The present invention relates to a process for producing light olefins from a synthesis gas with significantly improved conversion and selectivity for C-Clight olefins in general and propylene in particular, as compared to a conventional process, through a sequential two-step process comprising preparing olefin compounds from a synthesis gas in the presence of an iron catalyst by the Fischer-Tropsch reaction followed by cracking the olefin compounds in the presence of a zeolite catalyst.

Process for producing light olefins from synthesis gas using dual sequential bed reactor

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Daejeon, South Korea

Jo Yong Park