Article
Chemistry, Physical
Thanh Son Phan, Doan Pham Minh
Summary: Dry reforming of methane (DRM) is a promising process for producing synthetic gas, and the design of an effective catalyst is crucial. In this study, nickel catalysts supported by calcium hydroxyapatite (HAP) and HAP-doped magnesium (Mg_HAP) were synthesized and evaluated in the DRM reaction. The Ni/HAP and Ni/Mg_HAP catalysts showed outstanding performance due to the tunable acidity-basicity of the supports, strong metal-support interaction, and good thermal stability of nickel nanoparticles. The main products were H2 and CO, with stable selectivity around 85%, while H2O and solid carbon were byproducts with 5-10% selectivity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Energy & Fuels
Mohd Razali Shamsuddin, Nasar Mansir, Arfaezah Anuar, Mohd Izham Saiman, Tengku Sharifah Marliza, Mohd Ambar Yarmo, Yun Hin Taufiq-Yap
Summary: The study investigated the synergetic effect between NiO and dolomite support in the dry reforming of methane process, with 10% NiO/dolomite catalyst showing superior performance in producing H-2 rich syngas. The catalytic reaction demonstrated high conversion rates of CH4 and CO2 to H-2, with minimal coke formation and dual site associative adsorption mechanism.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Yvan J. O. Asencios, Cristiane B. Rodella, Elisabete M. Assaf
Summary: Catalysts based on Ni/PrO2-ZrO2 mixtures show excellent catalytic performance in various reactions. The PrO2-ZrO2 solid solution as a catalytic support can enhance the production of syngas and reduce carbon deposition. In situ characterization of the catalysts reveals that higher PrO2 content helps optimize the catalyst structure and improve activity and stability.
JOURNAL OF CO2 UTILIZATION
(2022)
Review
Chemistry, Physical
Ahmad Salam Farooqi, Mohammad Yusuf, Noor Asmawati Mohd Zabidi, R. Saidur, Khairuddin Sanaullah, Abid Salam Farooqi, Afrasyab Khan, Bawadi Abdullah
Summary: Rapid global energy demand growth has led to increased greenhouse gas emissions, highlighting the importance of utilizing Ni-based catalysts for methane reforming as a sustainable solution. Ni-based catalysts offer cost-effectiveness and high catalytic activity in curbing emissions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Mumtaj Shah, Prasenjit Mondal
Summary: In this study, the Taguchi method was used to optimize the process conditions for CO2 reforming of methane over the Ni-Ce/TiO2-ZrO2 catalyst. The results showed that the operating temperature had a significant effect on the performance index, with higher Zr content and lower reduction temperature favoring enhanced performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Yu-Shih Lin, Jia-Yun Tu, De-Hao Tsai
Summary: This study demonstrates a facile aerosol-based method to prepare hybrid nanostructures for catalyzing steam-promoted CO2 reforming with methane. The resulting NiPdOx-CeO2 nanoparticles deposited on SiO2 nanoparticle clusters exhibit superior catalytic performance at low temperatures, with high turnover frequency, tunable H2/CO ratio, and long-term operation stability. Incorporating SiO2 nanoparticle clusters as support material helps to enhance the dispersion of active metals and suppress metal sintering.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Applied
Pedro Nothaft Romano, Jose Faustino Souza de Carvalho Filho, Joao Monnerat Araujo Ribeiro de Almeida, Eduardo Falabella Sousa-Aguiar
Summary: A series of mono and bimetallic catalysts based on Ni, Rh, and Pd supported on different materials were evaluated for the dry reforming of methane reaction. Ni-based catalysts suffered from deactivation but could be regenerated, while Pd-based catalysts deactivated due to coke deposition. Rh-based catalysts showed remarkable activity and stability.
Article
Chemistry, Multidisciplinary
Yuxiao Dai, Rui Zou, Teer Ba, Jie Zhang, Chang-jun Liu
Summary: By decomposing nickel precursor with dielectric barrier discharge plasma, the activity of ceria-zirconia solid solution supported nickel catalysts can be improved, resulting in smaller nickel nanoparticles, higher reducibility, more basic sites, and oxygen vacancies. This leads to enhanced activation of CO2 for reforming and improved coke resistance.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Chemistry, Physical
HuaLun Zhu, Ziyin Chen, Laura Pastor-Perez, Xiangyi Long, Marcos Millan
Summary: Tar removal by catalytic steam reforming is important in gasification hot gas treatment. The effect of a full syngas mixture on this reaction has not been comprehensively investigated. This study analyzes the effect of each component and their combinations on steam reforming of toluene as a biomass gasification tar model. The presence of H2 and CH4 promotes catalyst deactivation, while CO and CO2 have minor inhibitory effects.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Defang Liang, Yishuang Wang, Mingqiang Chen, Xuanlan Xie, Chang Li, Jun Wang, Liang Yuan
Summary: This study successfully synthesized a highly efficient Ni-Co alloy catalyst, which can effectively treat greenhouse gases and produce high-value products through methane dry reforming. The research provides important guidance for the development of clay-based metallic Ni catalysts and their applications in syngas production.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Engineering, Environmental
Osarieme Uyi Osazuwa, Sumaiya Zainal Abidin, Xiaolei Fan, Andrew Nosakhare Amenaghawon, Mohammad Tazli Azizan
Summary: Catalyst preparation methods are crucial for improving catalytic performance by altering the metal-support interaction, changing the kinetics of the catalyst, increasing productivity, reducing costs, and optimizing energy requirements in methane reforming processes.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Energy & Fuels
Anh Ngoc T. Cao, Cham Q. Pham, Tung M. Nguyen, Thuan Van Tran, Pham T. T. Phuong, Dai-Viet N. Vo
Summary: Dysprosium (Dy) promoted Co/Al2O3 catalysts with different Dy loadings were synthesized and found to enhance the basicity and activity of the catalysts for methane dry reforming. The addition of Dy reduced the crystallite size of Co3O4, resulting in better metal dispersion and higher catalytic performance. The optimal Dy loading was found to be 0.3 wt%, achieving the highest CH4 conversion and H-2 and CO yields.
Article
Chemistry, Physical
Salwa Bader Alreshaidan, Ahmed A. Ibrahim, Anis H. Fakeeha, Abdulaziz M. Almutlaq, Fekri Abdulraqeb Ahmed Ali, Ahmed S. Al-Fatesh
Summary: The influence of five different supported catalysts on the CO2 reforming of methane to syngas was examined. The results showed that the catalyst support with the highest surface area provided the best catalytic activity.
Article
Chemistry, Physical
Anh Ngoc T. Cao, Cham Q. Pham, Le Kim Hoang Pham, Dang Le Tri Nguyen, Pham T. T. Phuong, Thi Tuong Vi Tran, Van-Phuoc Nguyen, Thanh Binh Nguyen, Quyet Van Le, Ngoc Anh Nguyen, Tung M. Nguyen
Summary: The metal-support interface plays a crucial role in the dispersion and catalytic activity of catalysts. This study investigated the effect of cerium on cobalt catalyst supported on gamma-alumina and found that cerium promoted the dispersion and reducibility of cobalt, leading to improved conversion of methane and carbon dioxide.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Kuppusamy Palanichamy, Natarajan Sasirekha
Summary: A one-pot hydrothermal technique was used to synthesize Ti-incorporated mesoporous SBA-15 with varying Si/Ti ratios, which were further modified by introducing Ni and Pt as active metal and promoter, respectively. The characterization analysis confirmed the incorporation of titanium ions and the superior performance of Pt-Ni/Ti-SBA-15 (Si/Ti = 10) in methane dry reforming.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Applied
Bruno Morandi Pires, Willian Goncalves Nunes, Bruno Guilherme Freitas, Francisca Elenice Rodrigues Oliveira, Vera Katic, Cristiane Barbieri Rodella, Leonardo Morais Da Silva, Hudson Zanin
Summary: This study presents a novel composite material of activated carbon and cobalt hexacyanoferrate for use as electrode materials in symmetric supercapacitors. The material combines the high specific surface area and electrochemical stability of activated carbon with the redox properties of cobalt hexacyanoferrate, showing improved specific capacitance and specific energy compared to traditional materials. Electrochemical studies and in situ characterization techniques reveal the key mechanisms of this composite material in the energy storage process.
JOURNAL OF ENERGY CHEMISTRY
(2021)
Article
Engineering, Chemical
Cassia S. Santana, Luiza S. Shine, Luiz H. Vieira, Ricardo J. Passini, Ernesto A. Urquieta-Gonzalez, Elisabete M. Assaf, Janaina F. Gomes, Jose M. Assaf
Summary: This study investigated the influence of Nb-promoted Cu/Zn materials synthesis method on their physicochemical and catalytic properties, finding that Cu/Zn/Nb-CP prepared by coprecipitation method exhibited the best performance in CO2 hydrogenation, with the highest activity and selectivity to methanol. Further characterization revealed methanol formation over Cu/Zn/Nb-CP occurs via RWGS+CO-Hydro and formate pathways.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Applied
Isa Carolina Silva Costa, Elisabete Moreira Assaf, Jose Mansur Assaf
Summary: A promising strategy was proposed in this study to enhance the performance of nickel-based catalysts in the ethanol steam reforming reaction by supporting perovskite-type oxide LaNiO3 on SBA-15. The catalyst with highly dispersed perovskite supported on a high specific surface area carrier exhibited the highest activity in the reaction.
TOPICS IN CATALYSIS
(2021)
Article
Chemistry, Multidisciplinary
Ananda Vallezi Paladino Lino, Elisabete Moreira Assaf, Jose Mansur Assaf
Summary: This study investigates the catalytic properties of the combination of ZrO2 and CeO2 for CO2 hydrogenation, finding that the CexZr(1-x)O2 solid solution with 50% Ce and 50% Zr composition exhibited the best performance in terms of CO2 conversion and product distribution, attributed to the balance between basic sites and adsorbed CO2/H2 amounts.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Chemistry, Physical
Isaias B. Aragao, Flavia R. Estrada, Dean H. Barrett, Cristiane B. Rodella
Summary: PdCo bimetallic catalysts were effectively dispersed on activated carbon through incipient impregnation with the use of oleyamine and oleaic acid as capping agents. The resulting catalyst showed a marked reduction in CO light-off temperatures compared to monometallic formulations.
MOLECULAR CATALYSIS
(2022)
Article
Chemistry, Multidisciplinary
Yvan J. O. Asencios, Cristiane B. Rodella, Elisabete M. Assaf
Summary: Catalysts based on Ni/PrO2-ZrO2 mixtures show excellent catalytic performance in various reactions. The PrO2-ZrO2 solid solution as a catalytic support can enhance the production of syngas and reduce carbon deposition. In situ characterization of the catalysts reveals that higher PrO2 content helps optimize the catalyst structure and improve activity and stability.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Electrochemistry
Aderemi B. Haruna, Dean H. Barrett, Cristiane B. Rodella, Rudolph M. Erasmus, Andrew M. Venter, Zeldah N. Sentsho, Kenneth I. Ozoemena
Summary: This study reports the use of microwave irradiation to suppress Jahn-Teller distortion and improve the electrochemistry of lithium-ion batteries. The results show that the microwave-treated material has suppressed distortion, increased surface area and crystallinity, and improved capacity and electrochemical efficiency.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Aline R. M. Cruz, Luiz H. Vieira, Elisabete M. Assaf, Janaina F. Gomes, M. Assaf
Summary: Catalyst improvement is crucial in developing efficient fuel cell technologies. The promotion of the Cu/CeO2 system with Pt in the CO-PROX reaction was investigated. The PtCu/CeO2 catalysts prepared by impregnation showed high activity, while Cu/CeO2 and Pt/CeO2 were inactive. The addition of CO2-H2O to the feed stream improved the activity of PtCu/CeO2 catalysts. By using deactivation-resistant Pt sites, CO-PROX under H2O/CO2 feed stream at low temperatures can be effectively achieved.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Review
Chemistry, Physical
Luiz H. H. Vieira, Leticia F. Rasteiro, Cassia S. Santana, Gabriel L. L. Catuzo, Alisson H. M. da Silva, Jose M. Assaf, Elisabete M. M. Assaf
Summary: Following advances in capture technologies, utilizing low-cost renewable H-2 in catalytic hydrogenation for CO2 utilization shows great potential in reducing the carbon footprint of industrial processes by providing valuable chemicals and fuels. However, the scalability and economic viability of these processes heavily rely on the development of efficient catalysts. This review summarizes recent progress in noble metal-based heterogeneous catalysts for the thermocatalytic conversion of CO2 into various products, highlighting their impact on catalyst properties and discussing challenges and potential future research opportunities.
Article
Chemistry, Physical
Alberth Renne Gonzalez Caranton, Fernando Stavale, Emilia Annese, Carolina Gaioto, Nohemi Raquel Checca, Jose Mansur Assaf
Summary: Hydrotalcite-based nickel catalysts were synthesized through sol-gel synthesis, Ni-EDTA impregnation, and coprecipitation. The synthesized hydrotalcites showed nanocapsular morphology and dispersed nickel nano-oxide particles after calcination. The sol-gel oxide catalysts exhibited the best performance with the highest reactivity and controlled coke formation at 800 degrees C after 14 hours of testing. Principal component analysis was performed to explain fluctuations in the reaction pathway.
Review
Chemistry, Applied
Lorrane C. C. B. Oliveira, Raissa Venancio, Paulo V. F. de Azevedo, Chayene G. Anchieta, Thayane C. M. Nepel, Cristiane B. Rodella, Hudson Zanin, Gustavo Doubek
Summary: Batteries, fuel cells, and supercapacitors currently on the market require improvements in kinetics to meet the demand for high energy density applications. Perovskites have gained attention for their electrocatalytic activity, properties, and low cost. Efforts have been made to understand and shape perovskite oxides as electrocatalysts, but there is still much to explore. This review highlights the use of perovskites in different energy storage and conversion systems, analyzing doping site effects and properties.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Review
Chemistry, Physical
Dean H. Barrett, Cristiane B. Rodella
CURRENT OPINION IN ELECTROCHEMISTRY
(2023)
Article
Chemistry, Physical
Guilherme B. Strapasson, Leonardo S. Sousa, Gabriel B. Bafero, Davi S. Leite, Beatriz D. Moreno, Cristiane B. Rodella, Daniela Zanchet
Summary: Understanding the properties of metal oxides and their interaction with catalyst supports is crucial for developing highly active, selective, and stable catalysts. In this study, Pt-supported Ti-Nb mixed metal oxides were synthesized to modulate the acidity of the catalysts' surface. The catalyst with higher Bronsted acid sites showed enhanced stability and selectivity towards C-O bond cleavage in the acetone hydrodeoxygenation reaction. Important insights into the impact of acidity modulation and metal-support interaction on the catalytic performance were provided, along with the correlation between catalytic sites and reaction mechanism.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Engineering, Environmental
Julia P. O. Julio, Bruno A. B. Francisco, Bianca P. de Sousa, Jean Felipe Leal Silva, Chayene G. Anchieta, Thayane C. M. Nepel, Cristiane B. Rodella, Rubens Maciel Filho, Gustavo Doubek
Summary: This study reveals that simple operating conditions can affect the discharge product formation and charging process of Li-O-2 batteries. The O-2 flow and pressure also have an impact on the cell performance.
CHEMICAL ENGINEERING JOURNAL ADVANCES
(2022)
