Article
Materials Science, Multidisciplinary
Paulina Summa, Katarzyna Swirk, Ye Wang, Bogdan Samojeden, Magnus Ronning, Changwei Hu, Monika Motak, Patrick Da Costa
Summary: A series of cobalt-promoted Ni-Mg-Al hydrotalcite-derived catalysts showed good performance in CO2 methanation reaction. Cobalt was found to enhance the reducibility of nickel species and the acidic/basic properties. While the Co-Ni alloy was not the subject of research, it was believed to form a solid solution in the nickel matrix.
APPLIED MATERIALS TODAY
(2021)
Article
Chemistry, Applied
Paulina Summa, Bogdan Samojeden, Monika Motak, Dominik Wierzbicki, Ivo Alxneit, Konrad Swierczek, Patrick Da Costa
Summary: This research focuses on a Ni-Mg-Al hydrotalcite-derived catalyst promoted with Cu for CO2 hydrogenation to methane. The Cu promotion was especially effective at low temperatures, leading to significant CO2 conversion and selectivity for methane formation. Higher Cu content did not necessarily result in better activity, as high Cu concentrations were found not to be suitable for CO2 methanation. Additionally, the formation of Ni-Cu solid solution and subsequent redispersion of Ni-Cu alloy during the methanation reaction were observed.
Article
Chemistry, Physical
Liangtao Yin, Xiying Chen, Menghan Sun, Bin Zhao, Jianjun Chen, Qiulin Zhang, Ping Ning
Summary: Fe-modified hydrotalcite-derived Ni-based catalysts show significant promotion effect on CO2 methanation, enhancing the reaction activity and carbon deposition resistance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Paola Riani, Ioannis Valsamakis, Tullio Cavattoni, Vicente Sanchez Escribano, Guido Busca, Gabriella Garbarino
Summary: Ni-based catalysts with enhanced thermal stability and catalytic performance for CO2 methanation have been synthesized, and it was found that La2O3 plays a promoting role in the reaction.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
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
Chemistry, Applied
Sergei Chernyak, Vyacheslav Rodin, Roman Novotortsev, Igor Kaplin, Konstantin Maslakov, Serguei Savilov
Summary: CO2 utilization is a crucial challenge in combating global warming. This study focuses on the conversion of CO2 to methane using Ni-based catalysts supported on rice husk. The purity of the support plays a crucial role in determining the catalyst's structure, activity, and selectivity.
Article
Energy & Fuels
Huilin Yi, Qiangqiang Xue, Shuliang Lu, Jiajia Wu, Yujun Wang, Guangsheng Luo
Summary: This study comprehensively investigates the role of pore structure on metal dispersion and catalytic performance. The results demonstrate that a narrow pore size distribution, high specific surface area, and large pore volume of the support promote uniform metal dispersion and stronger metal-support interaction. The Ni/Al2O3 microsphere catalysts exhibit smaller Ni particle size and higher CO2 conversion compared to other samples.
Article
Chemistry, Physical
Davina Messou, Vincent Bernardin, Frederic Meunier, Marta Borges Ordono, Atsushi Urakawa, Bruno F. Machado, Vincent Colliere, Regis Philippe, Philippe Serp, Carole Le Berre
Summary: The catalytic performances of TiO2-supported Ni catalysts for the methanation of CO2 are investigated, showing that the crystalline phases of TiO2 significantly affect the activity of Ni. Mixing rutile and anatase TiO2 can increase the reaction rate significantly without direct contact between the two catalysts. The synergy between the two catalysts is attributed to hydrogen spillover mediated by surface or gas-phase species.
JOURNAL OF CATALYSIS
(2021)
Article
Engineering, Chemical
Amira Afra Adam, Hasliza Bahruji, Athirah Ayub, Abdul Hanif Mahadi, Didik Prasetyoko, Rozita Yahaya
Summary: The introduction of Ba has improved the methanation activity of γ-Al2O3 prepared from waste aluminium. Ba can inhibit the formation of detrimental NiAl2O4 and increase the stability of the catalyst. By maintaining the oxidation states of Ni, Ba can also increase the methane yield.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Chemistry, Physical
Chao Sun, Katarzyna Swirk Da Costa, Dominik Wierzbicki, Monika Motak, Teresa Grzybek, Patrick Da Costa
Summary: Ni-containing mixed oxides derived from layered double hydroxides with various amounts of yttrium exhibited excellent catalytic activity, especially in the moderate temperature region. Modification with different amounts of yttrium had a positive effect on the catalytic performance and CO2 conversion rate, leading to mixed oxides with stronger affinity and smaller crystallite size.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Rui Tang, Niamat Ullah, Zhenhua Li
Summary: Introducing promoters on Ni-based catalysts has been proven to enhance their performance in CO2 methanation. The correlation between the promotion mechanism and the reaction pathway is significant for designing efficient catalysts. In this study, Zr-promoted SBA-15 supported Ni catalysts were prepared, and it was found that the addition of citric acid improved CH4 selectivity and the presence of Zr species on the support activated CO2. The ZrNi-1.7(CI) catalyst showed excellent catalytic performance with high CO2 conversion and CH4 selectivity, as well as good stability without carbon deposits after 50 hours of testing.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
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
Chemistry, Physical
Sana Ullah, Emma C. Lovell, Tze Hao Tan, Bingqiao Xie, Priyank Kumar, Rose Amal, Jason Scott
Summary: The study showed that illuminating the Co10/Lax-TiO2 catalyst with visible light can enhance the efficiency of CO2 methanation reaction, especially with lanthanum (La) doping, which significantly lowers the activation energy and improves CO2 conversion.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Paola Riani, Elena Spennati, Maria Villa Garcia, Vicente Sanchez Escribano, Guido Busca, Gabriella Garbarino
Summary: Samples of NiO on silica and alumina doped with silica were prepared and characterized. The SiO2 support showed low Ni dispersion ability, producing segregated NiO particles and dispersed Ni2+ in exchange sites, while the Si-doped alumina formed a surface spinel monolayer phase, leading to the formation of NiO. H2-TPR results indicated that NiO particles are more easily reduced than Ni species. Low loading Ni/SiO2 catalysts showed high selectivity and moderate activity for RWGS reaction, while high loading Ni/SiO2 catalysts showed both methanation and RWGS with short-term deactivation for methanation. Ni on alumina-rich carriers exhibited high activity and selectivity for methanation, attributed to small nickel clusters or metal particles interacting with alumina.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Applied
Andrea Cardenas-Arenas, Helena Soriano Cortes, Esther Bailon-Garcia, Arantxa Davo-Quinonero, Dolores Lozano-Castello, Agustin Bueno-Lopez
Summary: The study of CO2 hydrogenation to CH4 revealed that the catalyst consisting of size-controlled NiO-CeO2 mixed oxide nanoparticles exhibits higher activity and selectivity, attributed to its high specific surface area and the presence of highly-reducible Ni-O-Ce species on the nanoparticle surface.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Chemistry, Applied
Debaprasad Shee, Goutam Deo
Article
Chemistry, Applied
Aditya Shankar Sandupatla, Sudhir Charan Nayak, Chalumuri Sivananda, Goutam Deo
Article
Materials Science, Multidisciplinary
Anil Mangla, Goutam Deo, Pankaj A. Apte
COMPUTATIONAL MATERIALS SCIENCE
(2018)
Article
Chemistry, Physical
Sanjay Katheria, Goutam Deo, Deepak Kunzru
APPLIED CATALYSIS A-GENERAL
(2019)
Article
Chemistry, Physical
Aditya Shankar Sandupatla, Arghya Banerjee, Goutam Deo
APPLIED SURFACE SCIENCE
(2019)
Article
Chemistry, Physical
Puneet Kumar Chaudhary, Neeraj Koshta, Goutam Deo
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Chemistry, Physical
Koustuv Ray, Aditya Shankar Sandupatla, Goutam Deo
Summary: The catalytic activity and stability of alumina-supported Ni and Ni3M (M = Fe, Co, Cu) alloy catalysts for dry reforming of methane (DRM) were rationalized through density functional theory (DFT) studies. It was found that methane dissociation energy is a suitable descriptor for activity, while carbon adsorption energy is a suitable descriptor for stability.
INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY
(2021)
Article
Chemistry, Physical
Puneet Kumar Chaudhary, Goutam Deo
Summary: The study found that adding oxygen during the dry reforming of methane can enhance CH4 conversion and reduce carbon deposition, leading to the production of syngas with insignificant amounts of carbon.
REACTION KINETICS MECHANISMS AND CATALYSIS
(2021)
Article
Chemistry, Physical
Puneet Kumar Chaudhary, Goutam Deo
Summary: Dry reforming of methane is a promising method for converting methane and carbon dioxide into syngas. By calcining the catalyst and co-feeding oxygen, almost carbon-free operations can be achieved.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Mechanics
Anil Mangla, Goutam Deo, Pankaj A. Apte
Summary: In this study, the ordering process of Ni3Fe alloy was simulated using embedded atom potentials. It was found that at the critical cooling temperature, Ni(L12>1) atoms and Ni([IP]3) atoms significantly increased, and L12 ordered domains formed and resisted thermal fluctuations. The experimental and simulated results were in reasonable agreement.
JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT
(2022)
Article
Chemistry, Physical
Satyam Gupta, Goutam Deo
Summary: Mesoporous Ni-Al2O3 catalysts with different Ni loadings (5% to 15%) were synthesized and characterized for tri-reforming of methane (TRM). The results showed that the metal loading influenced the metal-support interaction, and the reduction temperature affected the dispersion of metallic-Ni. Higher Ni loading led to increased conversions and yields in TRM, but decreased the H2/CO ratio. The catalyst with 15 wt% Ni showed the highest conversions and yields, and minimal dispersion change post-reaction. Therefore, the active metal loading and reduction temperature are important parameters for designing a suitable catalyst for TRM.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Chemical
Satyam Gupta, A. S. Russel, Goutam Deo
Summary: Flue gas reforming of methane is an effective method to convert industrial flue gas into syngas. The conversion of reactants and yield of products increase with higher contact time and temperature. Additionally, the water content in flue gas from natural gas-fired burners affects the CO2 conversion and H-2/CO ratio.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
A. S. Russel, Puneet Kumar Chaudhary, Pulkit Jain, Goutam Deo
Summary: The microkinetic modelling of dry reforming of methane (DRM) with O-2 co-feed shows that feeding O-2 improves CH4 conversion, reduces carbon deposition, and increases H-2/CO ratio. Microkinetic analysis reveals that the surface coverage of empty sites tracks CH4 conversion, while the H-2/CO ratio is directly related to surface H* and CO* coverages. Sensitivity analysis highlights that CH4 dissociation is the rate-determining step for the ODRM reaction.
REACTION CHEMISTRY & ENGINEERING
(2021)
