scholarly journals Aqueous Miscible Organic LDH Derived Ni-Based Catalysts for Efficient CO2 Methanation

Catalysts ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1168
Author(s):  
Ziling Wang ◽  
Liang Huang ◽  
Tomas Reina ◽  
Angelos Efstathiou ◽  
Qiang Wang
Keyword(s):  
Vacancy Concentration ◽  
Value Added ◽  
Oxygen Vacancy Concentration ◽  
Co2 Methanation ◽  
Catalyst Structure ◽  
Metal Support ◽  
Fuels And Chemicals ◽  
Metal Support Interactions ◽  
Double Hydroxides ◽  
Metal Sintering

Converting CO2 to methane via catalytic routes is an effective way to control the CO2 content released in the atmosphere while producing value-added fuels and chemicals. In this study, the CO2 methanation performance of highly dispersed Ni-based catalysts derived from aqueous miscible organic layered double hydroxides (AMO-LDHs) was investigated. The activity of the catalyst was found to be largely influenced by the chemical composition of Ni metal precursor and loading. A Ni-based catalyst derived from AMO-Ni3Al1-CO3 LDH exhibited a maximum CO2 conversion of 87.9% and 100% CH4 selectivity ascribed to both the lamellar catalyst structure and the high Ni metal dispersion achieved. Moreover, due to the strong Ni metal–support interactions and abundant oxygen vacancy concentration developed, this catalyst also showed excellent resistance to carbon deposition and metal sintering. In particular, high stability was observed after 19 h in CO2/H2 reaction at 360 °C.

Electronic Metal-Support Interactions and their Promotional Effect on CO2 Methanation on Ru/ZrO2 Catalysts

2021 ◽  
Author(s):  
Shilong Chen ◽  
Ali M. Abdel-Mageed ◽  
Mengru Li ◽  
Sebastian Cisneros ◽  
Joachim Bansmann ◽  
...  
Keyword(s):  
Co2 Methanation ◽  
Promotional Effect ◽  
Metal Support ◽  
Metal Support Interactions

Enhanced stability of Ni/SiO2 catalyst for CO2 methanation: Derived from nickel phyllosilicate with strong metal-support interactions

Energy ◽  
2019 ◽  
Vol 188 ◽  
pp. 116059 ◽  
Author(s):  
Run-Ping Ye ◽  
Weibo Gong ◽  
Zhao Sun ◽  
Qingtao Sheng ◽  
Xiufeng Shi ◽  
...  
Keyword(s):  
Co2 Methanation ◽  
Metal Support ◽  
Metal Support Interactions ◽  
Enhanced Stability

Metal–support interactions on Ru/CaAlOx catalysts derived from structural reconstruction of Ca–Al layered double hydroxides for ammonia decomposition

2019 ◽  
Vol 55 (96) ◽  
pp. 14410-14413 ◽  
Author(s):  
Jiawen Zhao ◽  
Shuang Xu ◽  
Hongjie Wu ◽  
Zhixiong You ◽  
Lidan Deng ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Layered Double Hydroxides ◽  
Ammonia Decomposition ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Metal Support ◽  
Metal Support Interactions ◽  
Double Hydroxides ◽  
Strong Metal Support Interaction

Strong metal–support interaction (SMSI) over Ru/CaAlOx was constructed by utilizing the surface structural reconstruction of Ca–Al layered double hydroxides (LDHs) in aqueous solution and their subsequent hydroxide-to-oxide transformations.

Enhanced CO2 Methanation Activity of Ni/Anatase Catalyst by Tuning Strong Metal–Support Interactions

ACS Catalysis ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 6342-6348 ◽  
Author(s):  
Jian Li ◽  
Yaping Lin ◽  
Xiulian Pan ◽  
Dengyun Miao ◽  
Ding Ding ◽  
...  
Keyword(s):  
Co2 Methanation ◽  
Metal Support ◽  
Metal Support Interactions ◽  
Methanation Activity

scholarly journals Effect of Ni(NO3)2 Pretreatment on the Pyrolysis of Organsolv Lignin Derived from Corncob Residue

Processes ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 23
Author(s):  
Wenli Wang ◽  
Yichen Liu ◽  
Yue Wang ◽  
Longfei Liu ◽  
Changwei Hu
Keyword(s):  
Sustainable Development ◽  
Fixed Bed ◽  
Value Added ◽  
Bio Oil ◽  
Fuels And Chemicals ◽  
Gas Products ◽  
Work Samples ◽  
Nickel Species ◽  
The Impact ◽  
Selective Formation

The thermal degradation of lignin for value-added fuels and chemicals is important for environment improvement and sustainable development. The impact of pretreatment and catalysis of Ni(NO3)2 on the pyrolysis behavior of organsolv lignin were studied in the present work. Samples were pyrolyzed at 500 ∘C with an upward fixed bed, and the characteristics of bio-oil were determined. After pretreatment by Ni(NO3)2, the yield of monophenols increased from 23.3 wt.% to 30.2 wt.% in “Ni-washed” and decreased slightly from 23.3 wt.% to 20.3 wt.% in “Ni-unwashed”. Meanwhile, the selective formation of vinyl-monophenols was promoted in “Ni-unwashed”, which indicated that the existence of nickel species promoted the dehydration of C-OH and breakage of C-C in pyrolysis. In comparison with “Water”, HHV of bio-oil derived from “Ni-unwashed” slightly increased from 27.94 mJ/kg to 28.46 mJ/kg, suggesting that the lowering of oxygen content in bio-oil is associated with improved quality. Furthermore, the content of H2 in gas products dramatically increased from 2.0% to 7.6% and 17.1%, respectively.

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