Article
Energy & Fuels
Dan Zhou, Zhiyuan Li, Yaoqi Deng, Chengxiong Dang, Weiquan Cai
Summary: Sorption-enhanced biogas steam reforming with a Pb-modified Ni-CaO catalyst shows excellent stability and can continuously produce high-purity hydrogen.
Article
Chemistry, Physical
Yiru Mao, Lizhi Zhang, Xiangjuan Zheng, Wenming Liu, Zhihua Cao, Honggen Peng
Summary: In this study, a series of bimetallic RhNi catalysts supported on MgAl2O4 were synthesized and used for low-temperature biogas dry reforming. The results showed that the RhNi catalyst achieved high conversion rates of CH4 and CO2 at low reaction temperature (600 degrees C) without carbon deposition. The enhanced coking resistance was attributed to the addition of Rh, which efficiently suppressed carbon formation, and the high surface areas of the MgAl2O4 support, which promoted CO2 adsorption and activation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Applied
Nolven Guilhaume, Daniel Bianchi, Ramaniya A. Wandawa, Wang Yin, Yves Schuurman
Summary: Research on combined dry-steam reforming of model biogas over Ni-Rh/MgAl2O4 catalyst shows that methane prefers reacting with H2O rather than CO2, leading to inhibition of dry reforming reaction in the presence of steam. Adsorption studies demonstrate that H2O is adsorbed in higher amounts than CO2 on the catalyst surface, indicating competition for adsorption sites.
Article
Chemistry, Physical
Ramakrishna Chava, Anil Kumar Seriyala, D. Bhaskar Anurag Varma, Karthiek Yeluvu, Banasri Roy, Srinivas Appari
Summary: The A-site deficient La0.9_xBaxAl0.85Ni0.15O3 (x = 0, 0.02, 0.04, and 0.06) perovskite oxide catalyst was developed and used for dry reforming of model biogas. The catalysts were prepared using a citrate sol-gel method and analyzed using various techniques. The partial doping of Ba improved the catalytic activity and stability, resulting in the highest performance observed for La0.84Ba0.06Al0.85Ni0.15O3 (LB6AN-15).
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Green & Sustainable Science & Technology
Chengxiong Dang, Huanhuan Xia, Shuting Yuan, Xingchuan Wei, Weiquan Cai
Summary: Sorption-enhanced steam reforming of biogas (SESRB) is an efficient method to obtain high-purity hydrogen from biogas with in-situ CO2 removal. The study shows that the CO2 content does not affect CH4 conversion and H2 purity in the pre-breakthrough stage of SESRB process. The results demonstrate that SESRB is a promising technology for the efficient utilization of biogas to produce high-purity hydrogen.
Article
Chemistry, Physical
Rei-Yu Chein, Yen-Chung Chen, Wei-Hsin Chen
Summary: The study found that catalyst deactivation depends on reaction temperature and time, with complete sulfur coverage at low temperatures and regeneration at high temperatures. Additionally, bi-reforming of methane cannot prevent catalyst deactivation, and regeneration is only possible after the catalyst is poisoned. High-temperature oxidation is the most effective process for regenerating the poisoned catalyst.
Article
Chemistry, Physical
Yuchen Gao, Ayub Golmakani, Seyed Ali Nabavi, Jianguo Jiang, Vasilije Manovic
Summary: This study synthesized a Ni/MgO catalyst for biogas reforming using the wet impregnation method and optimized parameters through experimental rig and simulations. The optimal configuration was found to be a 2-zone setup with a catalyst ratio of 1:4, showing significant effects on catalytic behavior. The findings provide new insights into biogas reforming and heterogeneous catalysis reactions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Maryam Kaviani, Mehran Rezaei, Seyed Mehdi Alavi, Ehsan Akbari
Summary: In this study, Ni-SiO2@SiO2 core-shell catalysts were prepared and the effect of nickel content and calcination temperature on the catalytic activity was investigated. The results showed that Ni-SiO2@SiO2 catalyst with 10% Ni loading exhibited stable and high conversion rates of methane and CO2 with minimal carbon deposition. The high stability and carbon resistance properties of the catalyst were attributed to the strong Ni-SiO2 interaction and coverage of Ni particles by SiO2. The catalytic activity gradually improved with increasing calcination temperature.
Article
Chemistry, Applied
Monica Dan, Maria Mihet, Gheorghe Borodi, Mihaela D. Lazar
Summary: Three catalysts with bimodal pore structure, Ni/Al2O3, Ni/MgO-Al2O3, Ni/La2O3-Al2O3, were prepared and tested for combined steam and dry reforming of methane. Both magnesium and lanthanum oxides contributed to better dispersion and stabilization of Ni nanoparticles on the catalyst surface. Ni/La2O3-Al2O3 showed the best stability and catalytic activity among the tested catalysts.
Article
Engineering, Chemical
Artur J. Majewski, Sunit K. Singh, Nitin K. Labhasetwar, Robert Steinberger-Wilckens
Summary: A series of supported Ni-Mo catalysts were synthesised and investigated for combined steam and dry reforming, showing improved carbon tolerance and potential for use in Solid Oxide Fuel Cells. Formation of Mo2C improved catalytic activity towards steam reforming, and increasing Mo loading improved coke resistance but reduced catalytic activity.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Energy & Fuels
Anis H. Fakeeha, Abdulrahman Kurdi, Yousef A. Al-Baqmaa, Ahmed A. Ibrahim, Ahmed E. Abasaeed, Ahmed S. Al-Fatesh
Summary: Dry reforming of methane (DRM) has significant positive implications for the environment and industry by using top greenhouse gases to produce syngas and hydrogen. The catalytic performance of Ni/ZrO2 catalysts for DRM was studied, and an optimized catalyst with improved activity was discovered. The catalyst was further promoted with Sr to enhance the catalytic activity. Increasing the reaction temperature and reducing the feed flow rate improved the activity.
Article
Energy & Fuels
Nicola Schiaroli, Mirco Volanti, Antonio Crimaldi, Fabrizio Passarini, Angelo Vaccari, Giuseppe Fornasari, Sabrina Copelli, Federico Florit, Carlo Lucarelli
Summary: The combined S/DR process utilizing clean biogas shows great potential in reducing the environmental impact and has excellent potential as carbon capture and utilization technology with the lowest damage in all categories. Further improvements in the process could help to further reduce the environmental burden and support sustainable development.
Article
Energy & Fuels
Galina Xanthopoulou, Savvas Varitis, Manapkhan Zhumabek, Konstantinos Karanasios, George Vekinis, Svetlana A. Tungatarova, Tolkyn S. Baizhumanova
Summary: The world of energy is undergoing a profound transformation with hydrogen and hydrogen-containing fuel mixtures as efficient carriers of clean energy. Carbon dioxide conversion of methane using Ni/Mn-based catalysts shows promising results in reducing greenhouse gas emissions and city pollution, while also decreasing reliance on oil-based fuels. Characterization and investigation of catalyst composition on activity, selectivity, and product yield have been conducted.
Article
Chemistry, Applied
Pilar Tarifa, Nicola Schiaroli, Phuoc Hoang Ho, Fernando Canaza, Francesca Ospitali, Giancosimo Sanghez de Luna, Carlo Lucarelli, Giuseppe Fornasari, Angelo Vaccari, Antonio Monzon, Patricia Benito
Summary: The valorisation of clean biogas by steam reforming over metal open-cell foam-based structured catalysts was studied, showing that Rh-based catalysts exhibit superior activity and stability compared to Ru catalysts, leading to reduced carbon deposition and increased biogas valorisation and productivity.
Article
Chemistry, Physical
V. A. Shilov, V. N. Rogozhnikov, S. V. Zazhigalov, D. I. Potemkin, V. D. Belyaev, M. V. Shashkov, A. N. Zagoruiko, V. A. Sobyanin, P. V. Snytnikov
Summary: The catalytic blocks with different lengths were tested in the reactions of steam and autothermal reforming of n-hexadecane. Heating the catalyst through the reactor wall can improve the conversion efficiency and product distribution in the reforming processes.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Michelina Soccio, Rita Mazzoni, Carlo Lucarelli, Silvia Quattrosoldi, Andrea Cingolani, Maurizio Fiorini, Nadia Lotti, Tommaso Tabanelli
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2020)
Article
Energy & Fuels
Nicola Schiaroli, Mirco Volanti, Antonio Crimaldi, Fabrizio Passarini, Angelo Vaccari, Giuseppe Fornasari, Sabrina Copelli, Federico Florit, Carlo Lucarelli
Summary: The combined S/DR process utilizing clean biogas shows great potential in reducing the environmental impact and has excellent potential as carbon capture and utilization technology with the lowest damage in all categories. Further improvements in the process could help to further reduce the environmental burden and support sustainable development.
Article
Chemistry, Applied
Pilar Tarifa, Nicola Schiaroli, Phuoc Hoang Ho, Fernando Canaza, Francesca Ospitali, Giancosimo Sanghez de Luna, Carlo Lucarelli, Giuseppe Fornasari, Angelo Vaccari, Antonio Monzon, Patricia Benito
Summary: The valorisation of clean biogas by steam reforming over metal open-cell foam-based structured catalysts was studied, showing that Rh-based catalysts exhibit superior activity and stability compared to Ru catalysts, leading to reduced carbon deposition and increased biogas valorisation and productivity.
Article
Chemistry, Inorganic & Nuclear
Cristiana Cesari, Beatrice Berti, Francesco Calcagno, Carlo Lucarelli, Marco Garavelli, Rita Mazzoni, Ivan Rivalta, Stefano Zacchini
Summary: This study focuses on the reaction of Na[Co(CO)(4)] with different ligands M(IPr) and M(IMes) in the presence of Cu, Ag, and Au metals, resulting in the formation of various neutral and ionic heterometallic complexes. The synthesized products were characterized using spectroscopic techniques, and the molecular structures of some complexes were determined by X-ray diffraction. The catalytic performances of these bimetallic complexes were evaluated for the dehydrogenation of ammonia-borane and compared with other compounds. Additionally, DFT calculations were performed to provide information on the structure, IR spectroscopy, and thermodynamics of Co-M carbonyl clusters.
Article
Chemistry, Physical
Cristiana Cesari, Anna Gagliardi, Alessandro Messori, Nicola Monti, Valerio Zanotti, Stefano Zacchini, Ivan Rivalta, Francesco Calcagno, Carlo Lucarelli, Tommaso Tabanelli, Fabrizio Cavani, Rita Mazzoni
Summary: The catalytic activity of anionic ruthenium complexes in the transformation of bio-ethanol to 1-butanol and higher alcohols is dependent on the imidazolium counterion, and significantly enhanced by the addition of p-benzoquinones as co-catalysts. The catalytic system shows competitive conversions up to 88% and yields up to 85% of butanol and higher alcohols, with an overall selectivity of 97%, making them valuable for advanced biofuel and lubricant applications. The system is recyclable and efficient even in the presence of significant amounts of water, potentially closing an economic loop.
JOURNAL OF CATALYSIS
(2022)
Review
Chemistry, Physical
Nicola Schiaroli, Martina Battisti, Patricia Benito, Giuseppe Fornasari, Amalio Giovanni Di Gisi, Carlo Lucarelli, Angelo Vaccari
Summary: The purification and reforming of biogas plays a crucial role in obtaining a catalyst with high activity, stability, and resistance towards carbon formation.
Article
Engineering, Chemical
Phuoc Hoang Ho, Giancosimo Sanghez de Luna, Nicola Schiaroli, Alejandro Natoli, Francesca Ospitali, Martina Battisti, Francesco di Renzo, Carlo Lucarelli, Angelo Vaccari, Giuseppe Fornasari, Patricia Benito
Summary: Bulk Ni-based catalysts derived from hydrotalcite-type compounds exhibit enhanced stability compared to supported catalysts in the hydrogenation of CO2 into CH4. The presence of Fe and La in the catalysts influences their performance, with La showing better CH4 productivity at higher temperatures. Increasing the Ni loading in the NiMgLaAl catalyst further enhances its activity in the direct methanation of clean biogas.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Physical
Lorella Izzo, Tommaso Tabanelli, Fabrizio Cavani, Paola Blair Vasquez, Carlo Lucarelli, Massimo Mella
CATALYSIS SCIENCE & TECHNOLOGY
(2020)
