Promoted nickel-based catalysts on modified mesoporous silica support: The role of yttria and magnesia on CO2 methanation

Zahra Taherian; Alireza Khataee; Yasin Orooji

doi:10.1016/j.micromeso.2020.110455

Promoted nickel-based catalysts on modified mesoporous silica support: The role of yttria and magnesia on CO₂ methanation

Zahra Taherian, Alireza Khataee^*, Yasin Orooji^*

^*Corresponding author for this work

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

46 Citations (Scopus)

Abstract

In this research, a group of xY₂O₃-Ni/MgO-MCM-41catalysts were synthesized by using direct synthesis method for CO₂ hydrogenation and were characterized by employing BET, XRD, HRTEM, XPS, TPD, FE-SEM and TPO to understand the mechanism of CO₂ hydrogenation over yttria-Ni/MgO-MCM-41. Compared to Ni/MgO-MCM-41, all catalysts which contained Yttria showed improved catalytic activity. The one with 2 wt% yttria had the highest catalytic performance, with carbon dioxide conversion and methane selectivity of 65.55% and 84.44% at 673 K, respectively, and high stability after 30 h. The impact of adding yttria, as a promoter, on nickel dispersion and that of enhancing carbon dioxide adsorption sites on basicity sites attracted more attention as effective factors regarding conversion, selectivity, and stability.

Original language	English
Article number	110455
Journal	Microporous and Mesoporous Materials
Volume	306
DOIs	https://doi.org/10.1016/j.micromeso.2020.110455
Publication status	Published - 15 Oct 2020
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2020 Elsevier Inc.

Keywords

CO methanation
MCM-41
MgO-modified support
Ni catalyst
Yttria promoter

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

Access to Document

10.1016/j.micromeso.2020.110455

Cite this

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title = "Promoted nickel-based catalysts on modified mesoporous silica support: The role of yttria and magnesia on CO2 methanation",

abstract = "In this research, a group of xY2O3-Ni/MgO-MCM-41catalysts were synthesized by using direct synthesis method for CO2 hydrogenation and were characterized by employing BET, XRD, HRTEM, XPS, TPD, FE-SEM and TPO to understand the mechanism of CO2 hydrogenation over yttria-Ni/MgO-MCM-41. Compared to Ni/MgO-MCM-41, all catalysts which contained Yttria showed improved catalytic activity. The one with 2 wt% yttria had the highest catalytic performance, with carbon dioxide conversion and methane selectivity of 65.55% and 84.44% at 673 K, respectively, and high stability after 30 h. The impact of adding yttria, as a promoter, on nickel dispersion and that of enhancing carbon dioxide adsorption sites on basicity sites attracted more attention as effective factors regarding conversion, selectivity, and stability.",

keywords = "CO methanation, MCM-41, MgO-modified support, Ni catalyst, Yttria promoter",

author = "Zahra Taherian and Alireza Khataee and Yasin Orooji",

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

year = "2020",

month = oct,

day = "15",

doi = "10.1016/j.micromeso.2020.110455",

language = "English",

volume = "306",

journal = "Microporous and Mesoporous Materials",

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T1 - Promoted nickel-based catalysts on modified mesoporous silica support

T2 - The role of yttria and magnesia on CO2 methanation

AU - Taherian, Zahra

AU - Khataee, Alireza

AU - Orooji, Yasin

PY - 2020/10/15

Y1 - 2020/10/15

N2 - In this research, a group of xY2O3-Ni/MgO-MCM-41catalysts were synthesized by using direct synthesis method for CO2 hydrogenation and were characterized by employing BET, XRD, HRTEM, XPS, TPD, FE-SEM and TPO to understand the mechanism of CO2 hydrogenation over yttria-Ni/MgO-MCM-41. Compared to Ni/MgO-MCM-41, all catalysts which contained Yttria showed improved catalytic activity. The one with 2 wt% yttria had the highest catalytic performance, with carbon dioxide conversion and methane selectivity of 65.55% and 84.44% at 673 K, respectively, and high stability after 30 h. The impact of adding yttria, as a promoter, on nickel dispersion and that of enhancing carbon dioxide adsorption sites on basicity sites attracted more attention as effective factors regarding conversion, selectivity, and stability.

AB - In this research, a group of xY2O3-Ni/MgO-MCM-41catalysts were synthesized by using direct synthesis method for CO2 hydrogenation and were characterized by employing BET, XRD, HRTEM, XPS, TPD, FE-SEM and TPO to understand the mechanism of CO2 hydrogenation over yttria-Ni/MgO-MCM-41. Compared to Ni/MgO-MCM-41, all catalysts which contained Yttria showed improved catalytic activity. The one with 2 wt% yttria had the highest catalytic performance, with carbon dioxide conversion and methane selectivity of 65.55% and 84.44% at 673 K, respectively, and high stability after 30 h. The impact of adding yttria, as a promoter, on nickel dispersion and that of enhancing carbon dioxide adsorption sites on basicity sites attracted more attention as effective factors regarding conversion, selectivity, and stability.

KW - CO methanation

KW - MCM-41

KW - MgO-modified support

KW - Ni catalyst

KW - Yttria promoter

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