Self-assembly of flower-like LaNiAlO3-supported nickel catalysts for CO methanation

Hamidreza Arandiyan; Ghasem Kasaeian; Behzad Nematollahi; Yuan Wang; Hongyu Sun; Stuart Bartlett; Hongxing Dai; Mehran Rezaei

doi:10.1016/j.catcom.2018.07.001

Self-assembly of flower-like LaNiAlO₃-supported nickel catalysts for CO methanation

Hamidreza Arandiyan^*, Ghasem Kasaeian, Behzad Nematollahi, Yuan Wang, Hongyu Sun, Stuart Bartlett, Hongxing Dai, Mehran Rezaei

^*Corresponding author for this work

Research output: Contribution to journal › Journal article › Research › peer-review

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Abstract

A series of supported Ni nanoparticles on a flower-like porous LaNi_0.6Al_0.4O₃ (LNAO) perovskite carrier (zNi/LNAO; z = 5, 10 and 15 wt%) were successfully synthesized using a controlled self-assembly sol-gel method. The experimental results showed that the presence of Ni nanoparticles markedly enhanced the reaction rate of CO conversion, namely from 12.4 mmol/(g_cat h) over LNAO to 244 mmol/(g_cat h) over 10 wt% Ni/LNAO. The porous LNAO perovskite support provides both a large surface area to well disperse Ni nanoparticles and active sites for the methanation reaction, thus resulting in a catalyst with activity (per gram of catalyst basis) at least comparable to other nickel metal-based supported catalysts reported so far and with very good stability. Reaction rates calculated based on Ni exposed surface and total Ni amount revealed that Ni active sites in the Ni nanoparticles and bulk perovskite were distinct.

Original language	English
Journal	Catalysis Communications
Volume	115
Pages (from-to)	40-44
Number of pages	5
ISSN	1566-7367
DOIs	https://doi.org/10.1016/j.catcom.2018.07.001
Publication status	Published - 2018

Keywords

Al-substituted lanthanum nickelate
CO methanation
Flower-like porous material
Perovskite-supported Ni catalyst
Self-assembly

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10.1016/j.catcom.2018.07.001

PESEI 1 s2Accepted author manuscript, 860 KBLicence: CC BY-NC-ND

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title = "Self-assembly of flower-like LaNiAlO3-supported nickel catalysts for CO methanation",

abstract = "A series of supported Ni nanoparticles on a flower-like porous LaNi0.6Al0.4O3 (LNAO) perovskite carrier (zNi/LNAO; z = 5, 10 and 15 wt%) were successfully synthesized using a controlled self-assembly sol-gel method. The experimental results showed that the presence of Ni nanoparticles markedly enhanced the reaction rate of CO conversion, namely from 12.4 mmol/(gcat h) over LNAO to 244 mmol/(gcat h) over 10 wt% Ni/LNAO. The porous LNAO perovskite support provides both a large surface area to well disperse Ni nanoparticles and active sites for the methanation reaction, thus resulting in a catalyst with activity (per gram of catalyst basis) at least comparable to other nickel metal-based supported catalysts reported so far and with very good stability. Reaction rates calculated based on Ni exposed surface and total Ni amount revealed that Ni active sites in the Ni nanoparticles and bulk perovskite were distinct.",

keywords = "Al-substituted lanthanum nickelate, CO methanation, Flower-like porous material, Perovskite-supported Ni catalyst, Self-assembly",

author = "Hamidreza Arandiyan and Ghasem Kasaeian and Behzad Nematollahi and Yuan Wang and Hongyu Sun and Stuart Bartlett and Hongxing Dai and Mehran Rezaei",

year = "2018",

doi = "10.1016/j.catcom.2018.07.001",

language = "English",

volume = "115",

pages = "40--44",

journal = "Catalysis Communications",

issn = "1566-7367",

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TY - JOUR

T1 - Self-assembly of flower-like LaNiAlO3-supported nickel catalysts for CO methanation

AU - Arandiyan, Hamidreza

AU - Kasaeian, Ghasem

AU - Nematollahi, Behzad

AU - Wang, Yuan

AU - Sun, Hongyu

AU - Bartlett, Stuart

AU - Dai, Hongxing

AU - Rezaei, Mehran

PY - 2018

Y1 - 2018

N2 - A series of supported Ni nanoparticles on a flower-like porous LaNi0.6Al0.4O3 (LNAO) perovskite carrier (zNi/LNAO; z = 5, 10 and 15 wt%) were successfully synthesized using a controlled self-assembly sol-gel method. The experimental results showed that the presence of Ni nanoparticles markedly enhanced the reaction rate of CO conversion, namely from 12.4 mmol/(gcat h) over LNAO to 244 mmol/(gcat h) over 10 wt% Ni/LNAO. The porous LNAO perovskite support provides both a large surface area to well disperse Ni nanoparticles and active sites for the methanation reaction, thus resulting in a catalyst with activity (per gram of catalyst basis) at least comparable to other nickel metal-based supported catalysts reported so far and with very good stability. Reaction rates calculated based on Ni exposed surface and total Ni amount revealed that Ni active sites in the Ni nanoparticles and bulk perovskite were distinct.

AB - A series of supported Ni nanoparticles on a flower-like porous LaNi0.6Al0.4O3 (LNAO) perovskite carrier (zNi/LNAO; z = 5, 10 and 15 wt%) were successfully synthesized using a controlled self-assembly sol-gel method. The experimental results showed that the presence of Ni nanoparticles markedly enhanced the reaction rate of CO conversion, namely from 12.4 mmol/(gcat h) over LNAO to 244 mmol/(gcat h) over 10 wt% Ni/LNAO. The porous LNAO perovskite support provides both a large surface area to well disperse Ni nanoparticles and active sites for the methanation reaction, thus resulting in a catalyst with activity (per gram of catalyst basis) at least comparable to other nickel metal-based supported catalysts reported so far and with very good stability. Reaction rates calculated based on Ni exposed surface and total Ni amount revealed that Ni active sites in the Ni nanoparticles and bulk perovskite were distinct.

KW - Al-substituted lanthanum nickelate

KW - CO methanation

KW - Flower-like porous material

KW - Perovskite-supported Ni catalyst

KW - Self-assembly

U2 - 10.1016/j.catcom.2018.07.001

DO - 10.1016/j.catcom.2018.07.001

M3 - Journal article

SN - 1566-7367

VL - 115

SP - 40

EP - 44

JO - Catalysis Communications

JF - Catalysis Communications

ER -