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^*

^*Bu çalışma için yazışmadan sorumlu yazar

Araştırma sonucu: Dergiye katkı › Makale › bilirkişi

46 Atıf (Scopus)

Özet

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.

Orijinal dil	İngilizce
Makale numarası	110455
Dergi	Microporous and Mesoporous Materials
Hacim	306
DOI'lar	https://doi.org/10.1016/j.micromeso.2020.110455
Yayın durumu	Yayınlandı - 15 Eki 2020
Harici olarak yayınlandı	Evet

Bibliyografik not

Publisher Copyright:
© 2020 Elsevier Inc.

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Belgeye Erişim

10.1016/j.micromeso.2020.110455

Diğer Dosyalar ve Linkler

Link to publication in Scopus

Alıntı Yap

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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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TY - JOUR

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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DO - 10.1016/j.micromeso.2020.110455

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SN - 1387-1811

VL - 306

JO - Microporous and Mesoporous Materials

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