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1. (WO2018040798) MONODISPERSED IRON-BASED CATALYST FOR FISCHER-TROPSCH PROCESS, PREPARATION METHOD THEREFOR AND USE THEREOF

Pub. No.:    WO/2018/040798    International Application No.:    PCT/CN2017/094223
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Wed Jul 26 01:59:59 CEST 2017
IPC: B01J 23/745
B01J 35/10
C10G 2/00
B01J 37/10
Applicants: WUHAN KAIDI ENGINEERING TECHNOLOGY RESEARCH INSTITUTE CO., LTD.
武汉凯迪工程技术研究总院有限公司
Inventors: GUO, Li
郭立
CHEN, Jiangang
陈建刚
ZHANG, Yanfeng
张岩丰
JIN, Jiaqi
金家琪
SHI, Youliang
石友良
ZHENG, Shenke
郑申棵
GONG, Yan
龚焱
Title: MONODISPERSED IRON-BASED CATALYST FOR FISCHER-TROPSCH PROCESS, PREPARATION METHOD THEREFOR AND USE THEREOF
Abstract:
Disclose are a monodispersed iron-based catalyst for the Fischer-Tropsch process, a preparation method therefor and the use thereof. The catalyst comprises a carrier, i.e. silicon dioxide and an active component, i.e. iron. The carrier, i.e. silicon dioxide has a mesoporous spherical particle structure, and the carrier, i.e. silicon dioxide covers the active component, i.e. iron. The active component, i.e. iron is of a nanoparticle shape and is distributed uniformly. The particle size of the carrier, i.e. silicon dioxide particle is 140 - 160 nm. In the preparation method therefor, the pressure of CO2 is adjusted, so that the morphology of the catalyst is changed from a disc-shaped stack into a uniform spherical shape. The iron nanoparticles are thus covered in the interior of the spherical silicon dioxide, sintering of the iron nanoparticles is prevented, and the appearance of an ingredient which is difficult to reduce is also avoided. The iron-based catalyst can be applied to a process route for preparing an α-olefin, wherein the α-olefin is directly synthesized by using a synthetic gas as a raw material under the action of the iron-based catalyst. The iron-based catalyst has a high selectivity for a long chain α-olefin.