Article
Chemistry, Physical
Hai Li, Qing Liu
Summary: This study successfully synthesized nickel-phyllosilicate catalyst using calcined biomass-based silica as a sacrificial template under mild conditions. NH4HF2, H2SiF6, and HBF4 were used as assistors, with HBF4 being the most effective. The HBF4-assisted Ni-phyllosilicate catalyst showed high CO2 conversion and CH4 selectivity due to its small particle size, high Ni content, and enhanced desorption capacity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Ming Song, Liluo Shi, Xuena Xu, Xihua Du, Yan Chen, Wenchang Zhuang, Xumei Tao, Limei Sun, Yan Xu
Summary: This study investigates the effect of different promoters on the dispersion of Ni active sites and the catalytic performance of Ni catalysts in the hydrogenation of CO2. It is found that La and Ce promoters enhance the catalytic activity at low temperatures, while Mg promoter leads to reduced catalytic performance due to Ni particle agglomeration. The findings highlight the importance of Ni active sites and CO2 activation ability for efficient CO2 methanation at low temperatures.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Materials Science, Multidisciplinary
M. Safdar, M. Gonzalez-Castano, A. Penkova, M. A. Centeno, J. A. Odriozola, H. Arellano-Garcia
Summary: This study investigates the impact of Ni-supported YMn1-xAlxO3 catalysts on the CO2 methanation reaction. The results show the importance of the support nature and the improvement in redox behavior achieved through Al-incorporation.
APPLIED MATERIALS TODAY
(2022)
Article
Engineering, Chemical
Bowen Xu, Xin Meng, Zhong Xin, Daoming Jin, Rui Zhao, Wenhua Dai, Fan Xu, Dandan Yang
Summary: Ni-based halloysite methanation catalysts with various Mo contents were prepared using halloysites as supports. The addition of Mo enhanced the interaction between Ni and halloysite, preventing Ni aggregation and improving the catalyst activity and life. Mo also increased the electron density around Ni and facilitated the CO dissociation, improving the reaction activity under low temperature. The catalyst with 6Mo10Ni/eHNTs showed the best activity, achieving 100% CO conversion and 99.7% CH4 yield at 350°C. The addition of Mo also enhanced the catalyst's resistance to sintering and carbon deposition. This study demonstrates the potential industrial application of halloysite-supported methanation catalysts.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Physical
Viktoria Golovanova, Maria Chiara Spadaro, Jordi Arbiol, Viacheslav Golovanov, Tapio T. Rantala, Teresa Andreu, Joan Ramon Morante
Summary: The study utilizes solar light harvesting in the thermocatalytic approach to carbon dioxide methanation, revealing a dual effect of incident photons on the catalytic properties of the Ni/CeO2 catalyst. The approach increases the reaction rate up to 2.4 times and decreases power consumption by 20% under solar illumination, replacing conventional thermal activation with a green energy source.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Engineering, Chemical
M. Carmen Bacariza, Claudia Grilo, Paula Teixeira, Jose M. Lopes, Carlos Henriques
Summary: CO2 methanation is typically carried out using Ni-supported catalysts containing promoters such as alkali or alkali-earth metals to improve their properties. Bimetallic Ni-based USY zeolite catalysts with alkali and alkali-earth metal compounds were prepared and characterized, showing that alkali metals incorporation led to low catalytic performances due to negative impact on zeolite structure preservation. On the other hand, catalysts containing alkali-earth metals exhibited lower structural damage, with calcium identified as the most interesting metal due to slight improvement of Ni0 dispersion.
Article
Materials Science, Multidisciplinary
M. Gonzalez-Castano, J. C. Navarro de Miguel, A. Penkova, M. A. Centeno, J. A. Odriozola, H. Arellano-Garcia
Summary: This study proposes an innovative Ni catalyst supported over YMnO3 perovskite as a promising catalytic system for CO2 methanation reaction. The synergism between strongly interacting Ni particles with partially reduced YMnO3-x perovskites enables highly active and stable catalytic behaviors.
APPLIED MATERIALS TODAY
(2021)
Article
Chemistry, Applied
Yan Xu, Hongri Wan, Xihua Du, Bing Yao, Shuai Wei, Yan Chen, Wenchang Zhuang, Huamei Yang, Limei Sun, Xumei Tao, Peng Wang
Summary: A highly active Ni/CeO2/SiO2 catalyst is developed by a combustion-impregnation method for CO2 methanation. The addition of CeO2 promoter enhances the catalyst reducibility and facilitates CO2 activation. The optimal performance is achieved on the Ni-5Ce catalyst with small Ni particles and an optimal amount of CeO2 promoter.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Engineering, Environmental
Andres Canada-Barcala, Marcos Larriba, Vicente Ismael Agueda Mate, Jose Antonio Delgado Dobladez
Summary: Valorization of CO2 is necessary for climate change mitigation. Sustainable methane production for synthetic natural gas (SNG) is an attractive solution. Recent research focuses on catalyst/adsorbent mixtures capable of retaining water and producing methane at low temperatures. This study obtained a kinetic model for a Ni/SiAl catalyst and examined its water adsorption capacity. The results were used to simulate methane production in a Sorption Enhanced Reaction Process (SERP) using zeolite 3A. The proposed method achieved high CO2 conversion, methane selectivity, molar purity, and low compression energy consumption, presenting a new methanation process.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Multidisciplinary
Anastasios I. Tsiotsias, Nikolaos D. Charisiou, Ioannis V. Yentekakis, Maria A. Goula
Summary: CO2 methanation is a process aimed at reducing anthropogenic CO2 emissions by converting CO2 captured from sources into CH4 using catalysts, and the choice and design of catalysts play a crucial role in catalytic efficiency.
Article
Energy & Fuels
Yufang Bian, Chunying Xu, Xueying Wen, Leilei Xu, Yan Cui, Shuhan Wang, Cai-e Wu, Jian Qiu, Ge Cheng, Mindong Chen
Summary: A series of CeO2 supports with various morphologies were successfully fabricated and utilized as the supports of Ni-based CO2 methanation catalysts. The catalyst supported on CeO2 nanoparticles exhibited higher catalytic activity and better stability. By precisely designing the morphology of the CeO2 support, the catalytic performance of the Ni/CeO2 catalysts could be optimized.
Article
Chemistry, Physical
Zhihe Zhang, Zihang Yu, Kai Feng, Binhang Yan
Summary: In this study, the introduction of Eu3+ to Ni/CeO2 is found to enhance the Ni-CeO2 interaction, leading to higher dispersion and more interfacial sites. This results in improved catalytic activity for CO2 methanation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Zouhair Boukha, Alejandro Bermejo-Lopez, Benat Pereda-Ayo, Jose A. Gonzalez-Marcos, Juan R. Gonzalez-Velasco
Summary: The performance of nickel catalyst supported on lanthana-modified hydroxyapatite (HAP) in CO2 methanation was investigated, with La addition improving the dispersion and reducibility of Ni particles, increasing the amounts of basic sites and their thermal stability, leading to enhanced catalytic activity.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Energy & Fuels
Adriana Blanco, Josefina Caroca, Rocio Tamayo, Marcos Flores, Manuel Romero-Saez, Rodrigo Espinoza-Gonzalez, Francisco Gracia
Summary: Nickel-doped CaTiO3 (Ni@CTO) perovskites prepared by sol-gel synthesis showed high catalytic activity and selectivity in the CO2 methanation reaction. The catalysts with particle sizes below 10 nm exhibited the highest activity. The doped catalysts exhibited activity at lower temperatures, possibly due to enhanced CO2 adsorption sites and higher specific surface area resulting from the formation of oxygen vacancies in the perovskite. The 10Ni@CTO catalyst demonstrated high stability over 40 hours of reaction.
Article
Biochemistry & Molecular Biology
Yuyi Wang, Quan Ye, Xinyu Xu, Abdelghaffar S. Dhmees, Xuemin Cui
Summary: In recent years, major economies have implemented carbon reduction and carbon neutrality policies. With advancements in science and technology, carbon dioxide (CO2) is now considered a valuable raw material for producing carbon-based fuels. This study found that the inclusion of yttrium (Y) in the catalyst enhances its performance in CO2 methanation, improves thermal stability, and offers an innovative design approach for creating highly efficient composite catalysts.
Article
Chemistry, Multidisciplinary
Leila Karam, Maria C. Bacariza, Jose M. Lopes, Carlos Henriques, Julien Reboul, Nissrine El Hassan, Pascale Massiani
Summary: A new synthesis route using MIL-53(Al) as sacrificial support was developed to prepare Ni-based alumina catalysts for CO2 methanation, resulting in highly efficient and stable catalytic performance. The unique nanosheet morphology of the catalysts contributed to improved metallic dispersion and limited sintering and agglomeration, leading to enhanced catalytic activity, selectivity, and stability.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Chemistry, Physical
Adrian Quindimil, M. Carmen Bacariza, Jose A. Gonzalez-Marcos, Carlos Henriques, Juan R. Gonzalez-Velasco
Summary: This study improved the performance of Ni/Al2O3 catalyst for low temperature CO2 methanation by using glycerol-assisted impregnation and co-impregnation of Ru. The Ru dispersion in RuAlGAI catalyst was higher, and NiAlGAI catalyst showed slightly higher metal surface and better catalytic performance. Additionally, co-impregnating Ru significantly increased Ni surface area and led to a higher methane yield.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Golshid Hasrack, Maria Carmen Bacariza, Carlos Henriques, Patrick Da Costa
Summary: In recent years, carbon dioxide hydrogenation has been proposed as a promising technology for stabilizing anthropogenic greenhouse gas emissions by producing synthetic fuels and value-added molecules. This study investigated the effects of cobalt promotion on thermal CO2 methanation and non-thermal plasma (NTP)-assisted CO2 methanation using 15Ni/CeO2 catalysts with 1% and 5% cobalt. The promotion effect of cobalt was observed in both plasma and thermal reactions and was mainly attributed to the basic properties of the materials.
Review
Energy & Fuels
Paula Teixeira, Carmen Bacariza, Patricia Correia, Carla I. C. Pinheiro, Isabel Cabrita
Summary: Hydrogen is a versatile vector for various applications, and the capture of CO2 during production process is crucial in minimizing carbon footprint. Steam methane reforming and coal gasification are the main technologies for H-2 production, and in situ CO2 capture is especially profitable as it contributes to additional production of H-2.
Article
Chemistry, Multidisciplinary
Paula Teixeira, Carmen Bacariza, Ismail Mohamed, Carla I. C. Pinheiro
Summary: This study investigates the incorporation of alumina into CaO-based pellets to improve their CO2 capture performance and mechanical strength under high temperature conditions. The results show that alumina addition reduces sorbent deactivation and enhances sorbent's CO2 capture capacity.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Engineering, Chemical
Carmen Bacariza, Leila Karam, Nissrine El Hassan, Jose M. Lopes, Carlos Henriques
Summary: This study analyzed the effects of nickel loading, Si/Al ratio, and framework type on catalyst performance. Increasing nickel loading improved conversion rates but decreased stability. Si/Al ratio and zeolite type also had significant impacts on catalytic performance.
Article
Energy & Fuels
Filipe Mateus, Paula Teixeira, Joseï M. Lopes, Carlos Henriques, Carmen Bacariza
Summary: Activated carbons derived from cork wastes were used as supports for CO2 methanation catalysts for the first time. The addition of CeO2 improved the catalytic performance of the Ni-based catalysts, showing higher CH4 yields compared to the catalyst without CeO2.
Article
Green & Sustainable Science & Technology
Simba Biti, Alan Mccue, Davide Dionisi, Ines Graca, Claudia Fernandez Martin
Summary: Using activated carbons derived from microcrystalline cellulose, this study demonstrated their potential as sustainable sorbents for CO2 capture by achieving high CO2 adsorption capacity and stability. The activated carbon with 30 wt% burn-off exhibited the highest CO2 adsorption capacity under both static and dynamic adsorption conditions. The results suggest that microcrystalline cellulose-based activated carbons have promising applications in CO2 capture.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2023)
Article
Chemistry, Physical
Domenico Aceto, Maria Carmen Bacariza, Arnaud Travert, Carlos Henriques, Federico Azzolina-Jury
Summary: In this study, a Ru-based zeolite catalyst was synthesized and characterized, and its performance under thermal and plasma-assisted CO2 methanation conditions was investigated. The results showed that under plasma-catalytic conditions, CO2 was more easily adsorbed on the catalyst surface and hydrogenated to methane.
Article
Energy & Fuels
Muhammad Usman Azam, Auguste Fernandes, Ines Graca, Waheed Afzal
Summary: This study explores the hydrocracking route for converting surgical face masks made of polypropylene into liquid fuels. The experiment shows that Ni-loaded steamed Y zeolite is the best catalyst, achieving high conversion and selectivity to liquids. The catalyst's ability to improve polymer diffusion, combined with uniformly dispersed Ni particles and generated Lewis acidity, contributes to its performance. Furthermore, the life cycle assessment demonstrates the environmental benefits of hydrocracking over pyrolysis and incineration. These findings suggest that Ni-loaded steamed Y zeolites have promise as catalysts for upcycling surgical face masks to gasoline range fuels with minimal environmental impacts.
Article
Chemistry, Multidisciplinary
Eleanor C. L. Jones, Suse S. Bebiano, Martin R. Ward, Luis M. Bimbo, Iain D. H. Oswald
Summary: Dynamic organic crystals have shown potential as lightweight alternatives to inorganic actuators, with observed superelastic behavior and single-crystal to single-crystal transformation being crucial components for functioning actuators. The proposed mechanism for molecular movement supported by Pixel energy calculations may pave the way for the future design and development of dynamic crystals.
CHEMICAL COMMUNICATIONS
(2021)