Article
Engineering, Environmental
Ye Li, Xinping Wang, Chuan Shi
Summary: A series of Ba-Ce-Cu catalysts were prepared by the citric acid method and used for N2O decomposition. The doping effects of Ba and Ce on CuO were studied. It was found that the activity and tolerance of the catalyst to impurity gases can be effectively modified by the doping components. Ba0.2Cu displayed high activity due to the stabilizing effect of Ba on the active Cu+ species, while Ba0.2Ce0.5Cu exhibited higher catalytic activity and strong tolerance to NO, thanks to the synergistic effect of Ba and Ce and the ability of CeO2 to remove NOx species.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Nia Richards, Luke A. Parker, James H. Carter, Samuel Pattisson, David J. Morgan, Nicholas F. Dummer, Stanislaw E. Golunski, Graham J. Hutchings
Summary: The study demonstrates that catalysts with strong redox capabilities and weak Co-O bonds can be formed at lower temperatures using a citric acid preparation method, leading to enhanced activity for N2O decomposition. The mobility of surface oxygen species is crucial for the improved activity, and the recombination of oxygen on the catalyst surface plays a key role in the rate-limiting step for N2O decomposition.
Article
Chemistry, Physical
Satoshi Hinokuma, Takeshi Iwasa, Yoshihiro Kon, Tetsuya Taketsugu, Kazuhiko Sato
Summary: This comprehensive study investigated the effects of support materials and Ir loading on the catalytic N2O decom-position properties, revealing a close relationship between decomposition activity and Ir dispersion. The correlation between adsorption properties of N2O/NOx and the catalytic N2O decomposition activity was also demonstrated through NO-TPD profiles and in situ FTIR spectra.
CATALYSIS COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Jinru Sun, Aolei Song, Yu Tian, Hua Zhan, Jianlin Deng, Hong Wang, Ming Ke
Summary: In this study, the effect of alkali metal deposition on the activity of x-Co3O4 catalysts for the N2O catalytic decomposition was investigated. The results showed that the deposition of alkali metal Na improved the activity of the Na-Co3O4 catalyst, while the deposition of other alkali metals suppressed the catalytic decomposition of N2O. Characterization analysis indicated that the deposition of alkali metals did not change the morphology and structure of the catalysts but affected the chemical environment around the Co ion.
Article
Environmental Sciences
Abrar Inayat, Lisandra Rocha-Meneses, Muhammad Ayoub, Sami Ullah, Ahmad Z. Abdullah, Salman R. Naqvi, Aamir H. Bhat
Summary: This study explores the impact of different Co3O4-based catalysts on the catalytic decomposition of nitrous oxide (N2O) and the conversion of nitric oxide (NO). The results indicate that Co3O4 catalysts prepared through precipitation methods exhibit the highest activity and N2O conversion, even at low reaction temperatures, while commercial nano and powder forms of Co3O4 (CS) perform the poorest. The catalysts lose effectiveness below 400 degrees C, with their activity being greatly influenced by the mixing temperature. The findings offer valuable insights for designing and optimizing catalytic systems for N2O and NO control.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Biotechnology & Applied Microbiology
Behrouz Bozorgi, Javad Karimi-Sabet, Parisa Khadiv-Parsi
Summary: Using promoters to improve catalytic activity is an efficient method in chemical and industrial applications. This paper comprehensively examines the effects of impregnation method and alkali metals on the decomposition of N2O using a series of 1%wt Pt-M/SiO2 (M=Na, K, and Cs) catalysts. The catalysts were characterized using various techniques to analyze their physical and chemical properties and their relationship with catalytic activity. The results show that sodium and cesium reduce the conversion rate, while potassium exhibits promotional characteristics. Electron donation, facilitation of oxygen surface diffusion, and uniform distribution of KOx clusters are significant factors in improving the catalyst's reactivity.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Chemistry, Physical
Fan Lin, Tahrizi Andana, Yiqing Wu, Janos Szanyi, Yong Wang, Feng Gao
Summary: N2O decomposition on Cu, Co, and Fe-exchanged SSZ-13 zeolite catalysts follows a dual-site mechanism or a single-site mechanism. The reaction is limited by N-O cleavage under low pressure and first-order kinetic regime. Fe-SSZ-13 exhibits lower activation barriers, leading to a higher N2O decomposition rate.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Physical
Yuan Jing, Chenxi He, Ningqiang Zhang, Yu Murano, Ryo Toyoshima, Hiroshi Kondoh, Yuuta Kageyama, Hironori Inomata, Takashi Toyao, Ken-ichi Shimizu
Summary: In this study, the addition of Ag was found to enhance the catalytic efficiency of RhOx/Al2O3 catalyst, especially at low temperatures. The promotional effect was mainly achieved by enhancing the thermal reduction of Rh oxide.
Review
Chemistry, Physical
Yong Zhang, Zhigao Tian, Lin Huang, Honghong Fan, Qiufei Hou, Ping Cui, Wanqiang Wang
Summary: This review provides an overview of noble metal-based catalysts used in the direct catalytic decomposition of N2O, with a focus on recent advances. The review discusses various factors that influence the catalyst performance, such as catalyst supports, preparation methods, additives, and impurity gases. Additionally, future trends in catalyst systems for the direct catalytic decomposition of N2O are also discussed.
Article
Engineering, Chemical
Phuoc Hoang Ho, Katarzyna Swirk Da Costa, Giancosimo Sanghez de Luna, Magdalena Jablonska, Francesca Ospitali, Francesco Di Renzo, Gerard Delahay, Giuseppe Fornasari, Angelo Vaccari, Regina Palkovits, Patricia Benito
Summary: This study demonstrates a simple and reproducible method to prepare Co3O4 coated on metallic foams and investigates its catalytic performance in the decomposition of N2O. The obtained structured catalysts show stable performance and lower pressure drop compared to combustion or precipitated catalysts.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Engineering, Multidisciplinary
Er-hai An, Xiao-xia Li, Hai-xia Zhao, Ying-xin Tan, Xiong Cao, Peng Deng
Summary: This study investigates the effect of MgCo2O4 nanosheets on the thermal decomposition of AP-based energetic molecular perovskites. The results show that the addition of MgCo2O4 nanosheets lowers the thermal decomposition temperature and reduces the activation energy. This research provides a reference for the future application of AP-based energetic molecular perovskites.
DEFENCE TECHNOLOGY
(2023)
Article
Chemistry, Physical
Yuan Jing, Koichiro Taketoshi, Ningqiang Zhang, Chenxi He, Takashi Toyao, Zen Maeno, Teppei Ohori, Naoya Ishikawa, Ken-ichi Shimizu
Summary: In this study, a RhOx/ZrO2 catalyst was identified as the optimal catalyst for N2O decomposition at a relatively low temperature. The loading amount of Rh species significantly affects the efficiency of N2O decomposition, with the optimal loading being 10%. RhOx species in relatively large particles serve as more effective catalytically active sites.
Article
Chemistry, Physical
Rujito S. R. Suharbiansah, Muhammad Fernadi Lukman, Chiara Nannuzzi, Anna Wach, Kinga Gora-Marek, Michael Liebau, Ana Palcic, Andreas Poeppl, Gloria Berlier, Silvia Bordiga, Roger Glaeser, Magdalena Jablonska
Summary: Two series of zeolite Y with different particle sizes (approximately 100 or 400 nm) were prepared using different synthesis gel compositions, ageing, and hydrothermal steps. Copper-containing zeolite Y samples were obtained through ion-exchange and characterized. The catalytic activity of these materials varied significantly due to the different copper species present.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Maxim Zabilskiy, Iztok Arcon, Petar Djinovic, Elena Tchernychova, Albin Pintar
Summary: The study found that Cu2+/Cu+ and Ce4+/Ce3+ ionic pairs play dynamic and crucial roles in the N2O decomposition reaction, with the initial formation of reduced Cu+ and Ce3+ species during activation process. The concentration of these species significantly decreases during the steady-state reaction. The copper-ceria interface plays a crucial role in mediating electron and oxygen transfer during the catalytic reaction.
Article
Chemistry, Multidisciplinary
Seongmin Choi, Ki Bok Nam, Heon Phil Ha, Dong Wook Kwon
Summary: Cu supported on Ce-Y via CeO2-Y2O3 solid solution was reformed to improve the activity in catalytic N2O decomposition. Cu/Ce0.5Y0.5 achieved the highest activity. The number of accessible sites and oxygen vacancies increased with Y species loading, but the activity of Cu/Ce0.1Y0.9 decreased due to the difficulty of releasing O2.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Energy & Fuels
Eduard Alexandru Morosanu, Andres Saldivia, Massimiliano Antonini, Samir Bensaid
Article
Engineering, Environmental
Giuseppe Pipitone, Giulia Zoppi, Simone Ansaloni, Sergio Bocchini, Fabio A. Deorsola, Raffaele Pirone, Samir Bensaid
CHEMICAL ENGINEERING JOURNAL
(2019)
Article
Engineering, Environmental
Fabio Salomone, Emanuele Giglio, Domenico Ferrero, Massimo Santarelli, Raffaele Pirone, Samir Bensaid
CHEMICAL ENGINEERING JOURNAL
(2019)
Article
Chemistry, Physical
Tahrizi Andana, Marco Piumetti, Samir Bensaid, Nunzio Russo, Debora Fino
APPLIED CATALYSIS A-GENERAL
(2019)
Article
Chemistry, Applied
Giuseppe Pipitone, Giulia Zoppi, Sergio Bocchini, Andrea Maria Rizzo, David Chiaramonti, Raffaele Pirone, Samir Bensaid
Article
Chemistry, Applied
Giuseppe Pipitone, Giulia Zoppi, Alessandra Frattini, Sergio Bocchini, Raffaele Pirone, Samir Bensaid
Article
Chemistry, Physical
Quang Nguyen Tran, Ferenc Martinovic, Monica Ceretti, Serena Esposito, Barbara Bonelli, Werner Paulus, Francesco Di Renzo, Fabio A. Deorsola, Samir Bensaid, Raffaele Pirone
APPLIED CATALYSIS A-GENERAL
(2020)
Article
Chemistry, Physical
Enrico Sartoretti, Chiara Novara, Marco Fontana, Fabrizio Giorgis, Marco Piumetti, Samir Bensaid, Nunzio Russo, Debora Fino
APPLIED CATALYSIS A-GENERAL
(2020)
Article
Chemistry, Physical
Ferenc Martinovic, Tahrizi Andana, Marco Piumetti, Marco Armandi, Barbara Bonelli, Fabio Alessandro Deorsola, Samir Bensaid, Raffaele Pirone
APPLIED CATALYSIS A-GENERAL
(2020)
Article
Chemistry, Applied
Giulia Zoppi, Giuseppe Pipitone, Hannes Gruber, Gerald Weber, Alexander Reichhold, Raffaele Pirone, Samir Bensaid
Summary: The study explored aqueous phase reforming of waste from a Fischer-Tropsch plant as a promising process to produce hydrogen at mild temperatures. Results showed that higher temperatures favored hydrogen selectivity, with a plateau reached at 4 hours for hydrogen productivity. No appreciable deactivation phenomena were observed for the catalyst during reuse.
Article
Chemistry, Physical
Ferenc Martinovic, Fabio Alessandro Deorsola, Marco Armandi, Barbara Bonelli, Regina Palkovits, Samir Bensaid, Raffaele Pirone
Summary: A composite catalyst formed by mixing Cu-SSZ-13 with CeO2-SnO2 through solid-state synthesis showed resistance to hydrocarbon poisoning in NH3-mediated NOx-SCR reaction. The addition of CeO2-SnO2 enhanced the resistance towards propylene poisoning, with the primary active sites playing a complex role in preventing hydrocarbon poisoning. The mechanism proposed for deactivation and poisoning prevention involved HONO/nitrate intermediates formed over CeO2-SnO2 re-activating the zeolitic copper for SCR reaction, highlighting the importance of the interaction between different active sites.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Nanoscience & Nanotechnology
Hilmar Guzman, Fabio Salomone, Samir Bensaid, Micaela Castellino, Nunzio Russo, Simelys Hernandez
Summary: The study focuses on converting CO2 into valuable chemicals and fuels through electrocatalytic processes using Cu/ZnO catalysts. The addition of ZnO stabilizes the Cu1+/Cu-0 interface on the catalyst surface, potentially enhancing the surface properties and increasing the productivity of CO2 conversion products by optimizing the ZnO loading.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Chemical
Arturo Di Fraia, Edoardo Miliotti, Andrea Maria Rizzo, Giulia Zoppi, Giuseppe Pipitone, Raffaele Pirone, Luca Rosi, David Chiaramonti, Samir Bensaid
Summary: This study converted lignin-rich stream from lignocellulosic ethanol production into biocrude through continuous hydrothermal liquefaction (HTL), and produced hydrogen through aqueous phase reforming (APR). The use of NaOH catalyst resulted in a maximum biocrude yield of 27 wt%, and the phenolics in the co-produced aqueous phase were effectively removed through liquid-liquid extraction, improving the hydrogen yield of APR. Preliminary mass balances showed that APR can provide up to 46% of the theoretical hydrogen required for upgrading the HTL biocrude, enhancing the process performance and sustainability.
Article
Green & Sustainable Science & Technology
Giulia Grisolia, Debora Fino, Umberto Lucia
Summary: This study evaluates the potential of producing biomethane from rice straw through anaerobic digestion and introduces the concept of "rice straw barrel" as a metric approach to assigning economic value to this waste. The improvement in sustainability by using rice straw barrels is analyzed based on a new indicator called the Thermodynamic Human Development Index (THDI).
Article
Thermodynamics
Andrea Mazza, Fabio Salomone, Francesco Arrigo, Samir Bensaid, Ettore Bompard, Gianfranco Chicco
ENERGY CONVERSION AND MANAGEMENT-X
(2020)