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Delaminated and Pit-rich Nano-kaolinites obtained via an Intercalation-etching Method and their Application to Fischer–Tropsch Synthesis

Published online by Cambridge University Press:  01 January 2024

Hongxiao Qu ,
Tong Liu ,
Ruijue Hu ,
Hao Qu ,
Yichi Zhang ,
Hui Yang ,
Haiquan Su  and
Yue Su Open the ORCID record for Yue Su [Opens in a new window]
Hongxiao Qu
Affiliation:
Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
Tong Liu
Affiliation:
Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
Ruijue Hu
Affiliation:
Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
Hao Qu
Affiliation:
Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
Yichi Zhang
Affiliation:
Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
Hui Yang
Affiliation:
Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
Haiquan Su
Affiliation:
Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
Yue Su*
Affiliation:
School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China
*
e-mail: suyue@imu.edu.cn
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Abstract

Modified kaolinites possess excellent adsorption properties and, therefore, are regarded widely as potential catalytic components. The use of modified kaolinites as a catalytic component for Fischer–Tropsch synthesis (FTS) has remained unexplored, however. In the current study, delaminated and pit-rich nano-kaolinite was prepared via acid treatment of N-methylformamide (NMF)-intercalated kaolinite (intercalation-etching strategy), and was used as a support to prepare a cobalt-based FTS catalyst (denoted as 15%-Co-HNKln). Compared with other FTS catalysts, the supports for which were raw kaolinite or directly acid-treated kaolinite, the 15%-Co-HNKln showed several advantages such as large specific surface area, dispersed Co particles with small particle size, more new active sites, and significant surface acidity. Given the aforementioned advantages, the 15%-Co-HNKln catalyst demonstrated very good FTS performance. Compared with that of the raw kaolinite-supported FTS catalyst, the CO conversion rate and C5–C12 hydrocarbon selectivity of 15%-Co-HNKln increased by 20% and 15%, respectively.

Keywords

Acid treatmentCobalt-based catalystFischer–Tropsch synthesisIntercalationModified kaolinite
Type
Original Paper
Information
Clays and Clay Minerals , Volume 71 , Issue 4 , August 2023 , pp. 448 - 460
Copyright
Copyright © Clay Minerals Society 2023

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Footnotes

Associate Editor: Runliang Zhu

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