Article
Thermodynamics
A. O. Oni, K. Anaya, T. Giwa, G. Di Lullo, A. Kumar
Summary: Interest in blue hydrogen production technologies is increasing, but a comprehensive assessment is still needed. This study compares the cost and greenhouse gas emissions of three natural gas-based blue hydrogen production technologies and finds that steam methane reforming and autothermal reforming are economically preferable. The study also highlights the importance of plant size and carbon capture rate in determining the cost and emissions of blue hydrogen production.
ENERGY CONVERSION AND MANAGEMENT
(2022)
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
Thermodynamics
Bin-Bin Ge, Xi-Yue Li, Dong-Liang Zhong, Yi-Yu Lu
Summary: The hydrate-based solidified natural gas (SNG) technology shows promise for efficient natural gas storage and transportation. This study demonstrates the use of sulfonated lignin as a biomass surfactant to enhance CH4 hydrate formation kinetics. Furthermore, CH4 hydrate formed in the presence of sulfonated lignin exhibits a self-preservation effect under specific conditions.
Article
Thermodynamics
Bhoopendra Pandey, Pratik N. Sheth, Yogesh K. Prajapati
Summary: Using CO2 as a gasifying agent in biomass gasification can increase the CO content and heating value of the producer gas, but it reduces the average temperature in the gasifier.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Chemistry, Applied
V. A. Shilov, V. N. Rogozhnikov, N. V. Ruban, D. I. Potemkin, P. A. Simonov, M. V. Shashkov, V. A. Sobyanin, P. V. Snytnikov
Summary: The study revealed that even aged biodiesel can be converted to synthesis gas over the developed Rh/Ce0.75Zr0.25O2-delta-n-Al2O3/FeCrAl structured catalyst. Further optimization of the catalyst and reaction conditions is needed for efficient reforming of the aged biodiesel. Biodiesel and hydrodeoxygenated biodiesel are attractive biofuels for fuel cell-based power unit applications due to their high energy density and renewability.
Article
Energy & Fuels
Dimitrij Jesic, Vivian Erklavec Zajec, David Bajec, Gregor Dolanc, Gorazd Bercic, Blaz Likozar
Summary: This study proposes a method for obtaining hydrogen from diesel energy for use in fuel cells, using catalytic auto-thermal reforming and water-gas shift technology. Through simulation and analysis, the design of the reactors and the influence factors were studied, and a successful construction and operation model was established.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Applied
S. Zazhigalov, V. A. Shilov, V. N. Rogozhnikov, D. Potemkin, V. A. Sobyanin, A. N. Zagoruiko, P. Snytnikov
Summary: This work focuses on experimental studies and construction of a mathematical model for n-hexadecane reforming, using Rh/Ce0.75Zr0.25O2-delta-eta-Al2O3/FeCrAl wire mesh honeycomb catalytic module. The proposed model can be used for development, scale-up and optimization of catalytic reformers using steam reforming and auto-thermal reforming modes.
Article
Energy & Fuels
Flavio Tollini, Mattia Sponchioni, Vincenzo Calemma, Davide Moscatelli
Summary: Nowadays, most hydrogen is obtained from fossil fuels. However, efforts and resources are being dedicated to developing sustainable hydrogen manufacturing processes to promote the transition to renewable energy sources. One potential source is hydrogen sulfide, a byproduct in processes such as oil extraction and refinery operations. Methane reforming with H(2)S has attracted interest due to its economic and environmental implications, providing a way to eliminate hazardous molecules and produce high-value hydrogen. This study investigates the use of sulfur co-feeding in methane reforming with H(2)S to address key issues such as coke deposition and endothermicity of the process, and identifies optimal thermodynamic conditions for improved hydrogen production.
Article
Energy & Fuels
Wei-Hsin Chen, Partha Pratim Biswas, Hwai Chyuan Ong, Anh Tuan Hoang, Thanh-Binh Nguyen, Cheng-Di Dong
Summary: The study of hydrogen energy is gaining attention for its effectiveness in achieving net zero and environmental sustainability. Bioethanol is a carbon-neutral fuel for hydrogen production and has potential as a sustainable energy source. This research assesses different routes for ethanol reforming and evaluates the impact of catalyst physicochemistry and experimental parameters on hydrogen production. The findings show that non-noble metals like Co and Ni are more reactive than noble metals in ethanol steam reforming, while the sequence of hydrogen selectivity differs in autothermal reforming of ethanol. The review highlights the importance of sustainable hydrogen production and decarbonization in reaching the net zero target.
Article
Energy & Fuels
Prathamesh Bodhankar, Shanmukh Patnaik, Ganesh R. Kale
Summary: Autothermal reforming of methane is a widely reported technique for syngas production, the study reveals that specific operational parameters can lead to high conversion efficiency and optimal hydrogen to nitrogen ratio. Thermodynamic analysis identified the best operating parameters for this technology, contributing to efficient hydrogen production.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Physical
V. A. Shilov, V. N. Rogozhnikov, D. I. Potemkin, V. D. Belyaev, M. V. Shashkov, V. A. Sobyanin, P. V. Snytnikov
Summary: This study focused on the autothermal and steam reforming of model mixtures simulating commercial diesel fuel. The experiments showed that the low reaction rate of diaromatics steam reforming resulted in an increase in C1-C5 hydrocarbon by-products (primarily ethylene) in the gas phase, as well as the formation of polyaromatic compounds. These undesirable processes led to catalyst coking. However, monoaromatic constituents did not have a significant effect on the progress of undesirable side reactions during the reforming processes.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Maksim Lysyy, Martin A. Ferno, Geir Ersland
Summary: Underground hydrogen storage in porous media is proposed as a solution to balance seasonal fluctuations in supply and demand. However, there is still insufficient understanding of how hydrogen flows in porous media, specifically regarding relative permeability hysteresis and its impact on storage performance. This study focuses on reservoir simulation and shows that neglecting relative permeability hysteresis leads to overestimation of working gas capacity and recovered hydrogen volume. The study also highlights the importance of accurate modeling of hysteresis for predicting bottom-hole pressures in underground hydrogen storage.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Thermodynamics
Wei-Cheng Chiu, Shuhn-Shyurng Hou, Chen-Yu Chen, Wei-Hsiang Lai, Rong-Fang Horng
Summary: A system was developed to produce hydrogen-rich gas with low CO concentration via autothermal reforming of methanol, achieving high purity hydrogen with low CO concentration through a series of reactors. The system demonstrated stable hydrogen production during durability testing, enabling the fuel cell to steadily generate power.
Article
Chemistry, Applied
M. Fowles, M. Carlsson
Summary: This paper discusses the history and technological development of steam reforming for the production of synthesis gas in Billingham, UK, along with a brief overview of catalysts, technology, and industrial operation. Additionally, newer technologies aimed at increasing efficiency and reducing environmental impact of traditional steam reforming processes are presented, such as adiabatic reforming, autothermal reforming (ATR), and gas heated reforming (GHR).
TOPICS IN CATALYSIS
(2021)
Article
Engineering, Environmental
Zirui He, Juray De Wilde
Summary: Autothermal Chemical Looping Reforming (a-CLR) is a promising technology for CO2 capture and energy minimization in syngas production, utilizing a dual-fluidized bed process. A 1-D multiscale model was developed to study the feasibility, showing realistic results with precautions on oxygen carrier and oxidant ratios. Co-feeding CO2 with CH4 and H2O allows for adjusting syngas composition, but increases the risk of coke formation.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Harold R. Vergara, Maria H. Brijaldo, Jose J. Martinez, Hugo A. Rojas, Jose Pedraza, Fabio B. Passos, Luiz Pereira da Costa, Daniela Gonzalez-Vera, Paula Osorio-Vargas
Article
Chemistry, Physical
Laura M. Esteves, Andressa A. Daas, Hugo A. Oliveira, Fabio B. Passos
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)
Article
Engineering, Chemical
Juliana L. Smarzaro, Maria A. S. Baldanza, Antonio J. de Almeida, Alexander Caytuero, Vera M. M. Salim, Fabio B. Passos, Victor Teixeira da Silva
Summary: Cobalt nanoparticles encapsulated in silica with different shell thicknesses by the Stober method showed good catalytic performance in Fischer-Tropsch synthesis, and the thickness of the silica shell influenced their selectivity and activity.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Physical
Gabriel M. S. Salvador, Ana Luisa Silva, Ludmila P. C. Silva, Fabio B. Passos, Nakedia M. F. Carvalho
Summary: This study investigated the application of alpha-MnO2 and Pd/alpha-MnO2 as electrocatalysts in the oxygen evolution reaction (OER), with Pd/alpha-MnO2 showing lower OER overpotential, faster electron transfer kinetics, and excellent stability. The findings are expected to provide important insights for achieving efficient water splitting.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Pedro M. Araujo, Kevin M. da Costa, Fabio B. Passos
Summary: Nickel supported on perovskite supports showed high conversion and stability in the autothermal reforming of methane, especially Ni/CaTiO3 and Ni/BaTiO3. The alumina supported catalyst exhibited the highest initial conversion and selectivity, but deactivated over time.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Camila G. Silva, Fabio B. Passos, Victor Teixeira da Silva
Summary: The effect of carburization temperature varied for alumina-supported catalysts and silicon carbide-supported catalysts. For alumina-supported catalysts, a certain excess of carbon on the surface was needed as a shield against oxidation, while for silicon carbide-supported catalysts, the carburization temperature did not affect the activity, demonstrating the superiority of this support for different dry reforming operational conditions.
Article
Chemistry, Physical
Sancler C. Vasconcelos, Luiz F. C. Pinhel, Vinicius G. C. Madriaga, Vinicius Rossa, Leyliane G. S. Batinga, Domingos S. A. Silva, Rodrigo D. dos Santos, Andre V. H. Soares, Ernesto A. Urquieta-Gonzalez, Fabio Barboza Passos, Rajender S. Varma, Thiago M. Lima
Summary: This study presents the synthesis of hierarchical beta and mordenite zeolites for the conversion of furfural into isopropyl levulinate. Beta zeolite treated with an alkaline solution exhibited larger mesopores and a higher Lewis/Bronsted ratio, resulting in improved diffusion and higher conversion and selectivity.
Review
Chemistry, Physical
Cristian Castillo, Maria H. Brijaldo, Ludmila P. C. Silva, Fabio B. Passos
Summary: This review article discusses the recent studies on the catalytic conversion of 5-hydroxymethylfurfural (5-HMF) into 2,5-dimethylfuran (2,5-DMF). It presents the latest catalytic materials and their main results in 2,5-DMF production through catalytic hydrogen transfer (CHT) reactions and hydrodeoxygenation (HDO) reactions. The optimized reaction conditions for each catalyst are also discussed. The article also provides future perspectives on the use of CHT and HDO processes for 2,5-DMF production from 5-HMF as a platform molecule in heterogeneous catalysis.
Article
Chemistry, Multidisciplinary
Valeria Palermo, Jhoan M. Camargo Lopez, Maria H. Brijaldo, Sergio Acevedo, Sonia Mancipe, Juan-Carlos Castillo, Hugo A. Rojas, Fabio B. Passos, Jose J. Martinez, Gustavo P. Romanelli
Summary: Conversion of fruit seed residual biomass into biochar using MgCl2 as an activating agent and applying it as an acidic-basic catalyst has shown high selectivity.
Article
Chemistry, Multidisciplinary
Ana Luisa Silva, Laura M. Esteves, Ludmila P. C. Silva, Vitor S. Ramos, Fabio B. Passos, Nakedia M. F. Carvalho
Summary: This study presented the application of Mn-doped Co3O4 oxides in the electrocatalytic oxygen evolution reaction, showing higher activity with higher Co:Mn molar ratio. The excellent OER activity of the Mn-Co oxides in a wide pH range highlights their potential for practical application in various electrolyte solutions.
Review
Chemistry, Multidisciplinary
Vinicius G. C. Madriaga, Luanne E. M. Ferreira, Sancler C. Vasconcelos, Joao Pedro R. Mattos, Gabriela S. Abreu, Rodrigo C. da Silva, Vinicius Rossa, Andre V. H. Soares, Fabio Barboza Passos, Thiago M. Lima
Summary: In a society heavily reliant on fossil fuels, research into biofuels is crucial for a more sustainable future. Biodiesel has gained significant attention due to its versatility, with glycerol being a major concern as a byproduct. To address the issue of surplus glycerol, studies have proposed investing in its chemical conversion. This paper discusses how hierarchical zeolites can generate value-added compounds from glycerol and resist deactivation.
REVISTA VIRTUAL DE QUIMICA
(2022)
Review
Chemistry, Multidisciplinary
Sancler C. Vasconcelos, Lucas Marchini, Carolina G. S. Lima, Vinicius G. C. Madriaga, Ruan S. A. Ribeiro, Vinicius Rossa, Luanne E. M. Ferreira, Fernando de C. da Silva, Vitor F. Ferreira, Fabio Barboza Passos, Rajender S. Varma, Marcio W. Paixao, Thiago M. Lima
Summary: The development of efficient and green catalytic strategies for biomass upgrading is crucial. Single-atom catalysts and single-atom alloys have shown promising potential in overcoming issues associated with conventional catalytic approaches, and their application in biomass valorization is rapidly growing. This article provides an overview of the preparation, characterization, and catalytic evaluation of single-atom catalysts and alloys in biomass upgrading reactions, along with a critical outlook on the topic.
Article
Chemistry, Multidisciplinary
Laura M. Esteves, Hugo A. Oliveira, Yutao Xing, Fabio B. Passos
Summary: In this study, carbon nanotubes with similar properties to the support were successfully synthesized by methane catalytic decomposition over Co/CNT catalysts. The research found that cobalt loading and catalyst preparation method significantly influenced the yield and properties of the formed CNT, with high support surface area and low particle size playing key roles in carbon yield.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Wanderson Ferraz do Valle, Andre Von-Held Soares, Yutao Xing, Fabio Barboza Passos
Summary: This study investigated platinum and indium supported on alumina and silica as monometallic and bimetallic catalysts for the aqueous phase hydrogenolysis of glycerol towards 1,2-propanediol. The results showed that the addition of indium diluted platinum in bimetallic particles, creating more selective active sites for glycerol hydrogenolysis, leading to increased conversion rates. The influence of catalyst structure, bimetallic Pt-In particles, and different supports was discussed.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
G. P. Costa, A. H. A. Goncalves, L. A. V. Viana, J. C. S. Soares, F. B. Passos, F. M. T. Mendes, A. B. Gaspar
Summary: Ruthenium catalysts supported on zinc-promoted amorphous-niobium mixed oxides were prepared and characterized in this study using various techniques such as X-ray analysis and H-2 chemisorption. It was found that catalysts containing zinc showed higher selectivity, while those without zinc exhibited higher activity.
MATERIALS TODAY CHEMISTRY
(2021)
Correction
Chemistry, Applied
Jia Liu, Juntong Dong, Xiaodan Li, Teng Xu, Zhenguo Li, Jeffrey Dankwa Ampah, Mubasher Ikram, Shihai Zhang, Chao Jin, Zhenlong Geng, Tianyun Sun, Haifeng Liu
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Seba Alareeqi, Daniel Bahamon, Kyriaki Polychronopoulou, Lourdes F. Vega
Summary: This study explores the potential application of single-atom-alloy (SAA) catalysts in bio-oils hydrodeoxygenation refining using density functional theory (DFT) and microkinetic modeling. It establishes the relationships between stability, adsorptive properties, and activity structures for bio-oil derivatives, providing guidance for the synthesis of cost-effective SAA combinations.
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Bin Hu, Wen -Ming Zhang, Xue-Wen Guo, Ji Liu, Xiao Yang, Qiang Lu
Summary: This study explored the pyrolysis behaviors and mechanisms of different monosaccharides, including arabinose, galactose, galacturonic acid, and glucuronic acid. The roles of structural differences in these monosaccharides were analyzed, and it was found that glucuronic acid undergoes a special C-C bond breaking reaction during pyrolysis. The findings provide a deep understanding of the pyrolysis chemistry of hemicellulose and the role of different branches.
FUEL PROCESSING TECHNOLOGY
(2024)
Review
Chemistry, Applied
Youwei Zhi, Donghai Xu, Guanyu Jiang, Wanpeng Yang, Zhilin Chen, Peigao Duan, Jie Zhang
Summary: Hydrothermal carbonization (HTC) is an effective method for the harmless disposal of municipal sludge (MS) and offers potential applications for the obtained products. Optimizing reaction conditions, coupling with other waste materials, and combining different processes can improve the performance of HTC. Furthermore, HTC contributes to energy recovery and enhances the quality of life cycle assessment.
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Jia Wang, Jianchun Jiang, Dongxian Li, Xianzhi Meng, Arthur J. Ragauskas
Summary: This study presents a scalable process for converting holocellulose and cellulosic wastes into advanced oxygen-containing biofuels with high furan, cyclic ketone, and ethanol content. By combining hydropyrolysis and vapor-phase hydrodeoxygenation using Pd/Al2O3 as a catalyst, the researchers achieved high yields and conversions. The integrated process holds great promise for biomass waste conversion into advanced biofuels.
FUEL PROCESSING TECHNOLOGY
(2024)
Article
Chemistry, Applied
Florian Held, Jannis Reusch, Steffen Salenbauch, Christian Hasse
Summary: The accurate prediction and assessment of soot emissions in internal combustion engines are crucial for the development of sustainable powertrains. This study presents a detailed quadrature-based method of moments (QMOM) soot model coupled with a state-of-the-art flow solver for the simulation of gasoline engines. The model accurately describes the entire cause-and-effect chain of soot formation, growth and oxidation. Experimental validation and engine cycle simulations are used to identify the root cause of observed soot formation hotspots.
FUEL PROCESSING TECHNOLOGY
(2024)
