公开(公告)号：US10307735B2

公开(公告)日：2019-06-04

申请号：US15649222

申请日：2017-07-13

Applicant: Korea Research Institute of Chemical Technology

Inventor： Sung Tak Kim ,  Geun Jae Kwak ,  Ki Won Jun ,  Ahron Hwang ,  Seok Chang Kang

IPC: B01J29/06 ,  B01J23/10 ,  B01J35/00 ,  B01J35/10 ,  C10G11/05

Abstract: The present invention relates to an anti-coking catalyst having a physical property of reducing coke formation, which comprises a solid acid catalyst containing gadolinium (Gd) on the surface, a preparation method thereof, and a use thereof. The preparation method includes a first step of determining the amount of gadolinium (Gd) or a Gd-providing precursor to be used relative to the total weight of the solid acid catalyst, which reducing the coking of a specific solid acid catalyst below a specific level under a specific reaction condition; and a second step of preparing a Gd-containing solid acid catalyst using the amount determined in the first step. The catalyst according to the present invention is a catalyst in which an appropriate weight ratio of gadolinium is supported on the surface of a pure solid acid substance or solid acid substance on which a specific metal is supported. Therefore, the production of coke on the catalyst surface is inhibited while maintaining the activity of the solid acid catalyst in a hydrocarbon conversion reaction, and as a result, the catalyst of the present invention exhibits an effect of improving its lifespan.

公开(公告)号：US10208256B2

公开(公告)日：2019-02-19

申请号：US15542264

申请日：2015-11-27

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Ki Won Jun ,  Yun Jo Lee ,  Geun Jae Kwak ,  Hae Gu Park ,  Yong Tae Kim ,  Seok Chang Kang

IPC: C10G2/00 ,  C10G69/04 ,  C07C1/04 ,  C07C1/12 ,  C10G45/68 ,  C10G11/05

Abstract: Disclosed is a method for directly synthesizing monocyclic aromatic compounds and long-chain olefin compounds from a carbon dioxide-rich synthetic gas and, specifically, a method for directly synthesizing monocyclic aromatic compounds and long-chain olefin compounds from a carbon dioxide-rich synthetic gas, the method comprising a step of preparing a C1-C15 short-chain hydrocarbon by Fischer-Tropsch (FT) synthesis and a step of preparing monocyclic aromatic compounds and long-chain olefin compounds by dehydrogenating the short-chain hydrocarbon products, and maximizing the yield of the short-chain hydrocarbon by using, as a synthetic gas to be used in FT synthesis, a carbon dioxide-rich synthetic gas in which the molar ratio of hydrogen, carbon monoxide and carbon dioxide is delimited to a specific range, and maximizing the yield of the monocyclic aromatic compounds or the long-chain olefin compounds by specifying the composition of a catalyst to be used in the dehydrogenation and the temperature and pressure condition.