Fabrication and characterization of highly active fibrous silica-mordenite (FS@SiO2-MOR) cockscomb shaped catalyst for enhanced CO2 methanation

I. Hussain; A. A. Jalil; N. S. Hassan; H. U. Hambali; N. W.C. Jusoh

doi:10.1016/j.ces.2020.115978

Fabrication and characterization of highly active fibrous silica-mordenite (FS@SiO₂-MOR) cockscomb shaped catalyst for enhanced CO₂ methanation

I. Hussain, A. A. Jalil^*, N. S. Hassan, H. U. Hambali, N. W.C. Jusoh

^*Corresponding author for this work

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

50 Scopus citations

Abstract

Carbon dioxide (CO₂) emissions are of global concern because of climate change. CO₂ methanation is one of the most prestigious technologies to convert CO₂ into value-added products such as substitute natural gas. In this study, a highly active fibrous silica-mordenite (FS@SiO₂-MOR) catalyst has been synthesized by a microemulsion process and characterized by XRD, TEM, FESEM, N₂ adsorption analysis, FTIR-pyrrole, CO₂-TPD, and ESR spectroscopy. The CO₂ methanation reaction was performed, and it was found that the FS@SiO₂-MOR catalyst exhibited higher CH₄ selectivity (68%) and CO₂ conversion (65%) due to the distinctive fibrous morphology, which provided higher surface area, basic sites, and oxygen vacancies. In addition, the synthesized FS@SiO₂-MOR catalyst exhibited high thermal stability (50 h) and significantly suppressed coke deposition compared to commercial mordenite. According to in-situ FTIR observations, the carbonyls and linear CO₂* were the essential intermediates species for the formation of methane during CO₂ methanation via an associative mechanism.

Original language	English
Article number	115978
Journal	Chemical Engineering Science
Volume	228
DOIs	https://doi.org/10.1016/j.ces.2020.115978
State	Published - 31 Dec 2020
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2020 Elsevier Ltd

Keywords

CO methanation
Climate change
Fibrous silica mordenite zeolite
Oxygen vacancies
Reaction mechanism
Substitute natural gas

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.ces.2020.115978

Cite this

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title = "Fabrication and characterization of highly active fibrous silica-mordenite (FS@SiO2-MOR) cockscomb shaped catalyst for enhanced CO2 methanation",

abstract = "Carbon dioxide (CO2) emissions are of global concern because of climate change. CO2 methanation is one of the most prestigious technologies to convert CO2 into value-added products such as substitute natural gas. In this study, a highly active fibrous silica-mordenite (FS@SiO2-MOR) catalyst has been synthesized by a microemulsion process and characterized by XRD, TEM, FESEM, N2 adsorption analysis, FTIR-pyrrole, CO2-TPD, and ESR spectroscopy. The CO2 methanation reaction was performed, and it was found that the FS@SiO2-MOR catalyst exhibited higher CH4 selectivity (68\%) and CO2 conversion (65\%) due to the distinctive fibrous morphology, which provided higher surface area, basic sites, and oxygen vacancies. In addition, the synthesized FS@SiO2-MOR catalyst exhibited high thermal stability (50 h) and significantly suppressed coke deposition compared to commercial mordenite. According to in-situ FTIR observations, the carbonyls and linear CO2* were the essential intermediates species for the formation of methane during CO2 methanation via an associative mechanism.",

keywords = "CO methanation, Climate change, Fibrous silica mordenite zeolite, Oxygen vacancies, Reaction mechanism, Substitute natural gas",

author = "I. Hussain and Jalil, \{A. A.\} and Hassan, \{N. S.\} and Hambali, \{H. U.\} and Jusoh, \{N. W.C.\}",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2020",

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doi = "10.1016/j.ces.2020.115978",

language = "English",

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AU - Hussain, I.

AU - Jalil, A. A.

AU - Hassan, N. S.

AU - Hambali, H. U.

AU - Jusoh, N. W.C.

PY - 2020/12/31

Y1 - 2020/12/31

N2 - Carbon dioxide (CO2) emissions are of global concern because of climate change. CO2 methanation is one of the most prestigious technologies to convert CO2 into value-added products such as substitute natural gas. In this study, a highly active fibrous silica-mordenite (FS@SiO2-MOR) catalyst has been synthesized by a microemulsion process and characterized by XRD, TEM, FESEM, N2 adsorption analysis, FTIR-pyrrole, CO2-TPD, and ESR spectroscopy. The CO2 methanation reaction was performed, and it was found that the FS@SiO2-MOR catalyst exhibited higher CH4 selectivity (68%) and CO2 conversion (65%) due to the distinctive fibrous morphology, which provided higher surface area, basic sites, and oxygen vacancies. In addition, the synthesized FS@SiO2-MOR catalyst exhibited high thermal stability (50 h) and significantly suppressed coke deposition compared to commercial mordenite. According to in-situ FTIR observations, the carbonyls and linear CO2* were the essential intermediates species for the formation of methane during CO2 methanation via an associative mechanism.

AB - Carbon dioxide (CO2) emissions are of global concern because of climate change. CO2 methanation is one of the most prestigious technologies to convert CO2 into value-added products such as substitute natural gas. In this study, a highly active fibrous silica-mordenite (FS@SiO2-MOR) catalyst has been synthesized by a microemulsion process and characterized by XRD, TEM, FESEM, N2 adsorption analysis, FTIR-pyrrole, CO2-TPD, and ESR spectroscopy. The CO2 methanation reaction was performed, and it was found that the FS@SiO2-MOR catalyst exhibited higher CH4 selectivity (68%) and CO2 conversion (65%) due to the distinctive fibrous morphology, which provided higher surface area, basic sites, and oxygen vacancies. In addition, the synthesized FS@SiO2-MOR catalyst exhibited high thermal stability (50 h) and significantly suppressed coke deposition compared to commercial mordenite. According to in-situ FTIR observations, the carbonyls and linear CO2* were the essential intermediates species for the formation of methane during CO2 methanation via an associative mechanism.

KW - CO methanation

KW - Climate change

KW - Fibrous silica mordenite zeolite

KW - Oxygen vacancies

KW - Reaction mechanism

KW - Substitute natural gas

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