Article
Chemistry, Multidisciplinary
Amar Bendieb Aberkane, Maria Pilar Yeste, Faycal Djazi, Miguel Angel Cauqui
Summary: In this study, a series of NiO-CeO2 mixed-oxide catalysts were prepared using a modified co-precipitation method. The influence of the preparation method and pH value on the properties of the catalysts were investigated. The catalyst prepared at a higher pH value exhibited better performance in the CO methanation reaction.
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
Joaquim Miguel Badalo Branco, Ana Cristina Ferreira, Joana Filipa Martinho
Summary: Nickel- and cobalt-cerium bimetallic oxides are effective catalysts for the methanation of CO2. Pressure has a significant impact on catalyst activity, with an increase in pressure resulting in higher methane yield. Nickel-cerium bimetallic oxides exhibit the best performance, while cobalt-cerium bimetallic oxides show a particularly strong response to pressure. The catalysts' behavior follows the Langmuir-Hinshelwood-Hougen-Watson kinetic model, and the formation of cobalt carbides plays an important role in the catalytic process.
Article
Chemistry, Physical
Patrizia Frontera, Mariachiara Miceli, Francesco Mauriello, Pierantonio De Luca, Anastasia Macario
Summary: The study proposes a nickel catalyst impregnated onto a new support, ETS, for CO2 methanation reaction, achieving high CO2 conversion and CH4 selectivity; Ni/ETS-10 catalyst shows the best catalytic performance and is a promising catalyst for future CO2 methanation reaction.
Article
Engineering, Environmental
Wanyu Fang, Xinyu Liu, Jia Zhang, Hao Hou, Yang Yue, Guangren Qian
Summary: This study synthesized Ni-Si catalysts from Ni-rich and Si-rich electroplating sludges by a simple coprecipitation method and applied them in catalytic CO2 methanation. It was found that the CO2 conversion and CH4 selectivity of the sludge-derived catalyst increased as the catalytic temperature increased from 250°C to 450°C. The best catalyst achieved a CO2 conversion of 58.3% and a CH4 selectivity of 88.6% at 450°C. Detailed characterization revealed that the high performance was attributed to the Ni0/Ni2+ couple in NiO for low-temperature CO2 methanation and the interface (NiSi2) formed between NiO and Si in the sludge-derived catalyst for high-temperature CO2 methanation. Therefore, this work contributes to utilizing wastes (CO2 and sludge) to produce cost-effective products (CH4 and catalyst).
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Biotechnology & Applied Microbiology
Jianping Su, Susan van Dyk, Don O'Connor, Jack Saddler
Summary: Policies like LCFS have encouraged refineries to lower carbon intensity. Determining renewable content and carbon intensities of co-processed fuels is challenging. A combination of direct and indirect methods, such as carbon 14 and modified mass balance, can provide representative values.
BIOFUELS BIOPRODUCTS & BIOREFINING-BIOFPR
(2023)
Article
Chemistry, Physical
Nathalie Elia, Jane Estephane, Christophe Poupin, Bilal El Khoury, Laurence Pirault-Roy, Samer Aouad, Edmond Abi Aad
Summary: Nickel and ruthenium impregnated cerium oxide catalysts were tested for methanation of carbon dioxide. Ruthenium improved catalytic performance and produced a stable catalyst. At high gas pressure, CO2 conversion was close to thermodynamic equilibrium with 100% selectivity towards CH4 formation.
Article
Chemistry, Physical
Nienke L. Visser, Oscar Daoura, Philipp N. Plessow, Luc C. J. Smulders, Jan Willem de Rijk, Joseph A. Stewart, Bart D. Vandegehuchte, Felix Studt, Jessi E. S. van der Hoeven, Petra E. de Jongh
Summary: In this study, the effects of nickel particle size on catalytic stability, activity, and selectivity in CO2 methanation were investigated. Increasing the nanoparticle size led to higher catalytic activity, while the apparent activation energy remained the same. Testing at industrially relevant pressures revealed that the highest selectivity was achieved at high CO2 conversions and pressures, and the selectivity was dependent on particle size, with larger particles being more active and selective towards methane.
Article
Energy & Fuels
Yahong Han, Jinxian Zhao, Yanhong Quan, Shunan Yin, Shiping Wu, Jun Ren
Summary: The doping of La2O3 into CeO2 resulted in decreased grain size of Ni particles, increased Ni electron cloud density, and accelerated CO dissociation, leading to improved CO methanation activity. Additionally, enhanced oxygen vacancies were helpful in improving the anticoking properties of the catalyst.
Article
Engineering, Chemical
Tiancheng Pu, Liang Shen, Jing Xu, Chong Peng, Minghui Zhu
Summary: In the CO2 hydrogenation reaction, it is demonstrated that different activation mechanisms are employed due to varying H-2 dissociation capabilities over supported Ni catalysts with different particle sizes. This provides a convincing experimental explanation for the structural sensitivity of nickel-based catalysts.
Article
Chemistry, Physical
David Degerman, Patrick Lomker, Christopher M. Goodwin, Mikhail Shipilin, Fernando Garcia-Martinez, Christoph Schlueter, Anders Nilsson, Peter Amann
Summary: Operando X-ray photoelectron spectroscopy was used to investigate the surface state of Ni(111) and Ni(211) single crystal surfaces during CO hydrogenation. The results showed that at higher temperatures and hydrogen content, CO moved away from on-top configurations and toward multicoordinated sites on the nickel surface. A nickel carbide was formed in the surface near region, especially at high partial pressures of CO and lower temperatures. The presence of the carbide affected CO bonding, but was reduced during hydrogen-rich conditions and temperatures above 250 degrees C.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Ning Rui, Xiaoshan Zhang, Feng Zhang, Zongyuan Liu, Xinxiang Cao, Zhenhua Xie, Rui Zou, Sanjaya D. Senanayake, Yanhui Yang, Jose A. Rodriguez, Chang-Jun Liu
Summary: The Ni/CeO2 catalyst prepared via gas discharge plasma and hydrogen reduction shows high activity in CO2 methanation at low temperatures, with excellent CH4 formation rate and redox property. The unique interfacial structure and metal-support interaction lead to the formation of rich interfacial Ni-CeO2 sites, improving the catalyst's performance significantly in H-2 splitting and CO2 activation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
David Degerman, Patrick Lomker, Christopher M. Goodwin, Mikhail Shipilin, Fernando Garcia-Martinez, Christoph Schlueter, Anders Nilsson, Peter Amann
Summary: The state of the surface near-region during CO hydrogenation of Ni(111) and Ni(211) single crystal surfaces was investigated using operando X-ray photoelectron spectroscopy. Higher temperatures and hydrogen content were found to result in the movement of CO from on-top configurations to multicoordinated sites of the nickel surface and the formation of nickel carbide in the surface near region, particularly at high partial pressures of CO and lower temperatures. The presence of carbide affected CO bonding and the reduction of carbide was observed under hydrogen-rich conditions and temperatures above 250 degrees C.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Pin Hao, Ruirui Xu, Qian Wang, Zhenhuan Zhao, Houguang Wen, Junfeng Xie, Fengcai Lei, Guanwei Cui, Bo Tang
Summary: The cobalt, iron co-incorporated Ni(OH)(2) multiphase material exhibits superior catalytic activity and stability for multifunctional electrocatalytic oxidation, thanks to the multiphase synergy, enhanced charge transfer, and well-exposed active sites.
CHEMICAL COMMUNICATIONS
(2021)
Article
Engineering, Chemical
Zhanggui Hou, Yiming Chen, Xin Ma, Ling Zhou, Wen Wang, Jiesan Qiu, Yi Zhang
Summary: Ce-promoted Ni catalysts were developed and applied in CO methanation. The 10%Ni/SiO2 catalyst exhibited poor initial CO conversion and rapid deactivation, while maintaining the highest methane selectivity. In contrast, the 4%Ce-10%Ni/SiO2 catalyst showed significantly increased initial CO conversion and lower activation energy, resulting in higher CO conversion and better stability during the CO methanation reaction.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Thermodynamics
Angela Malara, Lucio Bonaccorsi, Patrizia Frontera, Angelo Freni, Luigi Calabrese
Summary: The study focuses on producing hybrid microfibers adsorbent materials using electrospinning technique, and characterizing the thermal stability and water sorption properties of SAPO-34 and silica gel microfibers. The experimental results showed that PMMA as carrier exhibited good mechanical properties and breathability, validating its potential as an ideal component for adsorption applications.
HEAT TRANSFER ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Emilia Paone, Mariachiara Miceli, Angela Malara, Guozhu Ye, Elsayed Mousa, Elza Bontempi, Patrizia Frontera, Francesco Mauriello
Summary: After appropriate thermal treatments, spent Li-ion batteries can be directly used as catalysts for selective hydrogenation, showing the potential of using and recycling the batteries as precious catalytic materials.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Physical
Pierantonio De Luca, Anastasia Macario, Carlo Siciliano, Janos B. Nagy
Summary: This study investigates the potential use of carbon nanotubes for treating olive vegetation waters and demonstrates their effectiveness in recovering biophenols.
Article
Plant Sciences
Marco Landi, Biswapriya B. Misra, Fabio Francesco Nocito, Giorgio Lucchini, Leonardo Bruno, Angela Malara, Maria Rosa Abenavoli, Fabrizio Araniti
Summary: Parasitisation by C. campestris enhances internal host defences but reduces environmentally directed defences, limiting the plant's ability to defend against parasitisation. The parasitisation alters plant water status, amino acid and sugar metabolism, and VOC levels, ultimately affecting the efficiency of photosynthesis and plant defence mechanisms. Overall, C. campestris parasitisation leads to an increase in osmoprotectants and changes in plant volatile compounds, impacting the host's ability to defend against parasitic invasion.
Article
Chemistry, Physical
Patrizia Frontera, Angela Malara, Anastasia Macario, Mariachiara Miceli, Lucio Bonaccorsi, Marta Boaro, Alfonsina Pappacena, Alessandro Trovarelli, Pier Luigi Antonucci
Summary: In this study, the catalytic behavior of nickel-based catalysts supported on ceria/zirconia, undoped and doped with lanthanum and neodymium, was investigated under steam reforming, partial oxidation and autothermal reforming reactions of different fuels. The catalytic properties were evaluated at a temperature of 800 degrees C, under atmospheric pressure, using steam/carbon and oxygen/carbon ratio, respectively, of S/C = 2.5 and O/C = 0.5. The doped catalyst showed better catalytic performance and resistance to deactivation due to improved distribution of nickel species and higher concentration of defect groups and oxygen vacancies on the catalyst surface.
Article
Engineering, Chemical
Patrizia Frontera, Angela Malara, Marta Boaro, Andrea Felli, Alessandro Trovarelli, Anastasia Macario
Summary: Ruthenium/nickel ex-solved perovskite catalysts were synthesized and characterized for ethanol autothermal reforming. The catalysts exhibited high ethanol conversion and hydrogen yield, with the SFMN/0.5Ru catalyst containing 0.5 wt% Ru showing the best performance. Increasing the amount of Ru in the catalyst resulted in reduced hydrogen yield and increased coke deposition.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Chemistry, Physical
Angela Malara, Lucio Bonaccorsi, Antonio Fotia, Pier Luigi Antonucci, Patrizia Frontera
Summary: Membrane technologies and materials development are important for hydrogen/natural gas separation in the transition to hydrogen economy. Current studies focus on developing novel materials for gas separation, including additives in a polymeric matrix. However, selectively separating high purity hydrogen from hydrogen/methane mixtures remains a challenge. Fluoro-based polymers like PVDF-HFP and Nafion(TM) are popular membrane materials, but further optimization is needed. This study tested hybrid polymer-based membranes for hydrogen/methane separation and found the best performance with a 4:1 PVDF-HFP/Nafion(TM) weight ratio.
Review
Green & Sustainable Science & Technology
Patrizia Frontera, Lucio Bonaccorsi, Antonio Fotia, Angela Malara
Summary: Technology needs to improve energy generation and utilization to support human societies. All highly industrialized nations are attempting to switch from fossil fuels to renewable energy sources, but the support is still not strong enough. Energy-efficient and renewable heating and cooling systems have great potential in saving energy, as buildings still heavily rely on fossil fuels for heating and cooling. Innovations in thermal energy storage materials are crucial for this transition, and this work reviews a new approach using electrospun microfibers for energy recovery in low-temperature range.
Article
Chemistry, Multidisciplinary
Pierantonio De Luca, Carlo Siciliano, Janos B. Nagy, Anastasia Macario
Summary: The purpose of this research was to evaluate the adsorbent properties of carbon nanotubes for purifying water contaminated with automotive diesel. The study investigated whether the high molecular weights of hydrocarbon molecules in diesel would affect the adsorption capacity of carbon nanotubes. NMR analysis, FT-IR spectroscopy, and thermal analysis were used to characterize the post-adsorption phases. The results showed that carbon nanotubes were efficient in adsorbing diesel, could be reused in multiple cycles, and allowed for the recovery of adsorbed diesel and treated water.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Geological
Daniela Dominica Porcino, Giuseppe Tomasello, Francesco Mauriello, Angela Malara
Summary: This research conducted comprehensive experimental investigation on the geotechnical characterization of new synthetic lightweight aggregates (SLAs) composed of reused biomass fly ash and waste plastics. The SLAs were evaluated for their compressibility, creep properties, compaction features, stress-strain-strength behavior, hydraulic conductivity, and water absorbability. The study found that the fly ash-HDPE aggregate had less compressibility compared to the fly ash-LDPE aggregate, and its creep coefficient was comparable to or even lower than that of other recycled materials. The aggregates also exhibited favorable permeability properties and proved to be environmentally sustainable.
ENVIRONMENTAL GEOTECHNICS
(2023)
Article
Engineering, Chemical
Pierantonio De Luca, Carlo Siciliano, Janos B. Nagy, Anastasia Macario
Summary: This review summarizes the most significant results reported in the literature on the use of carbon nanotubes in heterogeneous catalytic reactions. Carbon nanotubes are versatile materials and find applications in various sectors. Their thermal and chemical stability, large surface area, and high adsorbent and regenerative abilities make them excellent materials for industrial catalytic processes.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Review
Chemistry, Inorganic & Nuclear
Pierantonio De Luca, Janos B. Nagy, Anastasia Macario
Summary: This study provides information on the use of nanomaterials to combat the spread of the SARS-CoV-2 virus and discusses the strategies for utilizing the unique properties of nanomaterials in the production of personal protective equipment (PPE) for defense against the virus.
Article
Green & Sustainable Science & Technology
Antonio Fotia, Patrizia Frontera, Lucio Bonaccorsi, Beniamino Sciacca, Angela Malara
Summary: Heavy metal contamination is a significant environmental and health concern. This study develops a sensing material for their detection using the electrospinning technique to encapsulate the disodium salt of EDTA. The optimized active layer is tested using electrochemical impedance spectroscopy. The electrospun mats show lead detection in the 10-100 000 μg/L range with a detection limit of 0.031 μg/L.
ADVANCED SUSTAINABLE SYSTEMS
(2023)
