Comparative study of modified Ni catalysts over mesoporous CaO-Al2O3 support for CO2/methane reforming

Zahra Taherian; Vahid Shahed Gharahshiran; Alireza Khataee; Fereshteh Meshkani; Yasin Orooji

doi:10.1016/j.catcom.2020.106100

Comparative study of modified Ni catalysts over mesoporous CaO-Al₂O₃ support for CO₂/methane reforming

Zahra Taherian
, Vahid Shahed Gharahshiran
, Alireza Khataee^*
, Fereshteh Meshkani
, Yasin Orooji

^*Corresponding author for this work

University of Tabriz
Semnan University
Duy Tan University
University of Kashan
Nanjing Forestry University

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

35 Citations (Scopus)

Abstract

Promoted (ceria, lanthana, and yttria)-Ni/CaO-Al₂O₃ catalysts were prepared and after characterizing by XRD, BET, TPR, TEM, TPO, and FE-SEM tests, evaluated in CO₂/methane reforming (CRM) process. The observations revealed that the catalyst redox properties, crystallite size, and dispersion are important factors in catalytic performance. Among promoted Ni catalysts, the ceria-promoted catalyst with the smallest crystallite size (8.9 nm), the largest specific surface area and total pore volume showed the highest catalyst activity (~81%). Moreover, the TPO and FE-SEM of used catalysts demonstrated the lower CNT deposited on the ceria-promoted catalyst surface that leads to a delay in catalyst deactivation.

Original language	English
Article number	106100
Journal	Catalysis Communications
Volume	145
DOIs	https://doi.org/10.1016/j.catcom.2020.106100
Publication status	Published - Oct 2020
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2020 Elsevier B.V.

UN SDGs

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

SDG 13 Climate Action

Keywords

Alumina support
Ceria
Lanthana
Methane dry reforming
Ni catalyst
Yttria

Access to Document

10.1016/j.catcom.2020.106100

Cite this

@article{5f8c45cf491d45e1a76b293c2b93fbd4,

title = "Comparative study of modified Ni catalysts over mesoporous CaO-Al2O3 support for CO2/methane reforming",

abstract = "Promoted (ceria, lanthana, and yttria)-Ni/CaO-Al2O3 catalysts were prepared and after characterizing by XRD, BET, TPR, TEM, TPO, and FE-SEM tests, evaluated in CO2/methane reforming (CRM) process. The observations revealed that the catalyst redox properties, crystallite size, and dispersion are important factors in catalytic performance. Among promoted Ni catalysts, the ceria-promoted catalyst with the smallest crystallite size (8.9 nm), the largest specific surface area and total pore volume showed the highest catalyst activity (\textasciitilde{}81\%). Moreover, the TPO and FE-SEM of used catalysts demonstrated the lower CNT deposited on the ceria-promoted catalyst surface that leads to a delay in catalyst deactivation.",

keywords = "Alumina support, Ceria, Lanthana, Methane dry reforming, Ni catalyst, Yttria",

author = "Zahra Taherian and \{Shahed Gharahshiran\}, Vahid and Alireza Khataee and Fereshteh Meshkani and Yasin Orooji",

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year = "2020",

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doi = "10.1016/j.catcom.2020.106100",

language = "English",

volume = "145",

journal = "Catalysis Communications",

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T1 - Comparative study of modified Ni catalysts over mesoporous CaO-Al2O3 support for CO2/methane reforming

AU - Taherian, Zahra

AU - Shahed Gharahshiran, Vahid

AU - Khataee, Alireza

AU - Meshkani, Fereshteh

AU - Orooji, Yasin

PY - 2020/10

Y1 - 2020/10

N2 - Promoted (ceria, lanthana, and yttria)-Ni/CaO-Al2O3 catalysts were prepared and after characterizing by XRD, BET, TPR, TEM, TPO, and FE-SEM tests, evaluated in CO2/methane reforming (CRM) process. The observations revealed that the catalyst redox properties, crystallite size, and dispersion are important factors in catalytic performance. Among promoted Ni catalysts, the ceria-promoted catalyst with the smallest crystallite size (8.9 nm), the largest specific surface area and total pore volume showed the highest catalyst activity (~81%). Moreover, the TPO and FE-SEM of used catalysts demonstrated the lower CNT deposited on the ceria-promoted catalyst surface that leads to a delay in catalyst deactivation.

AB - Promoted (ceria, lanthana, and yttria)-Ni/CaO-Al2O3 catalysts were prepared and after characterizing by XRD, BET, TPR, TEM, TPO, and FE-SEM tests, evaluated in CO2/methane reforming (CRM) process. The observations revealed that the catalyst redox properties, crystallite size, and dispersion are important factors in catalytic performance. Among promoted Ni catalysts, the ceria-promoted catalyst with the smallest crystallite size (8.9 nm), the largest specific surface area and total pore volume showed the highest catalyst activity (~81%). Moreover, the TPO and FE-SEM of used catalysts demonstrated the lower CNT deposited on the ceria-promoted catalyst surface that leads to a delay in catalyst deactivation.

KW - Alumina support

KW - Ceria

KW - Lanthana

KW - Methane dry reforming

KW - Ni catalyst

KW - Yttria

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