Unravelling acidity–selectivity relationship in the bifunctional process of Fischer-Tropsch synthesis and catalytic cracking

Deviana Deviana; Geun Bae Rhim; Young eun Kim; Hyeon Song Lee; Gyoung Woo Lee; Min Hye Youn; Kwang Young Kim; Kee Young Koo; Jinwon Park; Dong Hyun Chun

doi:10.1016/j.cej.2022.140646

Unravelling acidity–selectivity relationship in the bifunctional process of Fischer-Tropsch synthesis and catalytic cracking

Deviana Deviana, Geun Bae Rhim, Young eun Kim, Hyeon Song Lee, Gyoung Woo Lee, Min Hye Youn, Kwang Young Kim, Kee Young Koo, Jinwon Park, Dong Hyun Chun

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Fischer-Tropsch synthesis (FTS) was carried out over bifunctional model catalysts prepared by physically mixing precipitated iron-based FTS catalysts (P-Fe) and H-ZSM-5. We adjusted the acidity of model catalysts by varying the ratio of P-Fe/H-ZSM-5 and the ratio of Si/Al in the H-ZSM-5. The physical mixing of H-ZSM-5 was adequate to supply the Brønsted acid sites (BAS), which are nonexistent in the P-Fe, to the bifunctional model catalysts without deteriorating the catalytic activity of P-Fe. As a result, we found a linear correlation between the cracking rate and the BAS concentration in the bifunctional process of FTS and cracking for the first time. Furthermore, the model catalysts showed high CO conversion (73–78 %), comparable to that of P-Fe (73 %), and improved C₅–C₂₀ selectivity with increased BAS concentration. The highest C₅–C₂₀ selectivity obtained in this study (72 wt%) was twice higher than that obtained in the P-Fe (36 wt%).

Original language	English
Article number	140646
Journal	Chemical Engineering Journal
Volume	455
DOIs	https://doi.org/10.1016/j.cej.2022.140646
Publication status	Published - 2023 Jan 1

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) through grants funded by the Korean government (No. NRF- 2019R1A2C2086827 and No. NRF- 2019M3D3A1A01069106 ).

Publisher Copyright:
© 2022 The Author(s)

All Science Journal Classification (ASJC) codes

Chemistry(all)
Environmental Chemistry
Chemical Engineering(all)
Industrial and Manufacturing Engineering

Access to Document

10.1016/j.cej.2022.140646

Cite this

@article{66154bd6b0b84580baf237d427b52d6a,

title = "Unravelling acidity–selectivity relationship in the bifunctional process of Fischer-Tropsch synthesis and catalytic cracking",

abstract = "Fischer-Tropsch synthesis (FTS) was carried out over bifunctional model catalysts prepared by physically mixing precipitated iron-based FTS catalysts (P-Fe) and H-ZSM-5. We adjusted the acidity of model catalysts by varying the ratio of P-Fe/H-ZSM-5 and the ratio of Si/Al in the H-ZSM-5. The physical mixing of H-ZSM-5 was adequate to supply the Br{\o}nsted acid sites (BAS), which are nonexistent in the P-Fe, to the bifunctional model catalysts without deteriorating the catalytic activity of P-Fe. As a result, we found a linear correlation between the cracking rate and the BAS concentration in the bifunctional process of FTS and cracking for the first time. Furthermore, the model catalysts showed high CO conversion (73–78 %), comparable to that of P-Fe (73 %), and improved C5–C20 selectivity with increased BAS concentration. The highest C5–C20 selectivity obtained in this study (72 wt%) was twice higher than that obtained in the P-Fe (36 wt%).",

author = "Deviana Deviana and {Bae Rhim}, Geun and Kim, {Young eun} and {Song Lee}, Hyeon and {Woo Lee}, Gyoung and {Hye Youn}, Min and {Young Kim}, Kwang and {Young Koo}, Kee and Jinwon Park and {Hyun Chun}, Dong",

note = "Funding Information: This work was supported by the National Research Foundation of Korea (NRF) through grants funded by the Korean government (No. NRF- 2019R1A2C2086827 and No. NRF- 2019M3D3A1A01069106 ). Publisher Copyright: {\textcopyright} 2022 The Author(s)",

year = "2023",

month = jan,

day = "1",

doi = "10.1016/j.cej.2022.140646",

language = "English",

volume = "455",

journal = "Chemical Engineering Journal",

issn = "1385-8947",

publisher = "Elsevier",

}

TY - JOUR

T1 - Unravelling acidity–selectivity relationship in the bifunctional process of Fischer-Tropsch synthesis and catalytic cracking

AU - Deviana, Deviana

AU - Bae Rhim, Geun

AU - Kim, Young eun

AU - Song Lee, Hyeon

AU - Woo Lee, Gyoung

AU - Hye Youn, Min

AU - Young Kim, Kwang

AU - Young Koo, Kee

AU - Park, Jinwon

AU - Hyun Chun, Dong

N1 - Funding Information: This work was supported by the National Research Foundation of Korea (NRF) through grants funded by the Korean government (No. NRF- 2019R1A2C2086827 and No. NRF- 2019M3D3A1A01069106 ). Publisher Copyright: © 2022 The Author(s)

PY - 2023/1/1

Y1 - 2023/1/1

N2 - Fischer-Tropsch synthesis (FTS) was carried out over bifunctional model catalysts prepared by physically mixing precipitated iron-based FTS catalysts (P-Fe) and H-ZSM-5. We adjusted the acidity of model catalysts by varying the ratio of P-Fe/H-ZSM-5 and the ratio of Si/Al in the H-ZSM-5. The physical mixing of H-ZSM-5 was adequate to supply the Brønsted acid sites (BAS), which are nonexistent in the P-Fe, to the bifunctional model catalysts without deteriorating the catalytic activity of P-Fe. As a result, we found a linear correlation between the cracking rate and the BAS concentration in the bifunctional process of FTS and cracking for the first time. Furthermore, the model catalysts showed high CO conversion (73–78 %), comparable to that of P-Fe (73 %), and improved C5–C20 selectivity with increased BAS concentration. The highest C5–C20 selectivity obtained in this study (72 wt%) was twice higher than that obtained in the P-Fe (36 wt%).

AB - Fischer-Tropsch synthesis (FTS) was carried out over bifunctional model catalysts prepared by physically mixing precipitated iron-based FTS catalysts (P-Fe) and H-ZSM-5. We adjusted the acidity of model catalysts by varying the ratio of P-Fe/H-ZSM-5 and the ratio of Si/Al in the H-ZSM-5. The physical mixing of H-ZSM-5 was adequate to supply the Brønsted acid sites (BAS), which are nonexistent in the P-Fe, to the bifunctional model catalysts without deteriorating the catalytic activity of P-Fe. As a result, we found a linear correlation between the cracking rate and the BAS concentration in the bifunctional process of FTS and cracking for the first time. Furthermore, the model catalysts showed high CO conversion (73–78 %), comparable to that of P-Fe (73 %), and improved C5–C20 selectivity with increased BAS concentration. The highest C5–C20 selectivity obtained in this study (72 wt%) was twice higher than that obtained in the P-Fe (36 wt%).

UR - http://www.scopus.com/inward/record.url?scp=85144789300&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85144789300&partnerID=8YFLogxK

U2 - 10.1016/j.cej.2022.140646

DO - 10.1016/j.cej.2022.140646

M3 - Article

AN - SCOPUS:85144789300

SN - 1385-8947

VL - 455

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

M1 - 140646

ER -

Unravelling acidity–selectivity relationship in the bifunctional process of Fischer-Tropsch synthesis and catalytic cracking

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this