Article
Green & Sustainable Science & Technology
P. Jain, M. Chimote, C. P. Vinod
Summary: Bimetallic nanoparticles with synergistic effects can enhance the catalytic activity, selectivity, and stability of solid materials. The study synthesized Au@Co core-shell bimetallic nanoparticles and demonstrated efficient and stable CO conversion in the FT reaction.
MATERIALS TODAY SUSTAINABILITY
(2021)
Article
Agricultural Engineering
Fan Wang, Chenglong Wen, Mohong Lu, Peng Zhang, Jie Zhu, Mingshi Li, Yuhua Shan, Chunshan Song
Summary: Mo2N@NC/SBA-15 catalysts with high stability and dispersion were prepared using MoCl5 and dicyandiamide as Mo and C/N sources, respectively. During the carbonization process under H2 at an elevated temperature, Mo2N was formed in situ while dicyandiamide was converted to N-doped carbon (NC). The presence of N-doped carbon species around Mo2N NPs inhibited the aggregation of Mo2N NPs, resulting in the generation of ultrafine Mo2N nanoparticles. Mo2N@NC/SBA-15 catalysts exhibited high hydro-deoxygenation activity and aromatic compound selectivity. The selectivity towards aromatic products reached 92% and guaiacol conversion reached 99% at 380 degrees C and 2 MPa.
BIOMASS & BIOENERGY
(2023)
Article
Chemistry, Applied
C. F. Toncon-Leal, J. F. Munera, J. J. Arroyo-Gomez, K. Sapag
Summary: Iron, cobalt, and bimetallic catalysts were synthesized and impregnated on mesoporous silica support to study their behavior in Fischer-Tropsch Synthesis. Bimetallic catalysts exhibited higher catalytic activity than monometallic catalysts.
Article
Engineering, Chemical
Palle Ramana Murthy, Sehrish Munsif, Jing-Cai Zhang, Wei-Zhen Li
Summary: Alterations in catalyst morphology under different pretreatment conditions were studied, revealing that ceria-promoted Pd-supported SBA-15 catalyst exhibited better catalytic activity and stability for CO oxidation compared to zirconia-promoted Pd-supported SBA-15 catalyst.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Physical
Mohamed Sadou, Adel Saadi, Mohammed Hadj Meliani, Rami K. Suleiman, Tawfik A. Saleh
Summary: A facile synthetic method was used to prepare copper-modified SBA-15 catalysts. The catalysts showed high activity, which could be attributed to the well-dispersed copper nanoparticles on the mesoporous support.
SURFACES AND INTERFACES
(2022)
Article
Energy & Fuels
Norshakirah Ahmad Rashidi, Elnida Mustapha, Yeow Yean Theng, Noor Azira Abdul Razak, Najihah Abdul Bar, Khairul Basyar Baharudin, Darfizzi Derawi
Summary: Waste cooking oil is an attractive feedstock for producing advanced biofuels due to its low cost and abundant availability. This study focused on the synthesis and analysis of mesoporous bimetallic catalysts for the catalytic deoxygenation of waste cooking oil. The results showed that the catalyst with 10% Ni-Fe/SBA-15 had the highest liquid yield but low selectivity towards the diesel fraction, while the catalyst with 5% Ni-Co/SBA-15 had the highest selectivity towards the diesel fraction.
Article
Chemistry, Applied
Albano M. Lacoste, Ines S. Tiscornia, Magali Bonne, Laure Michelin, Benedicte Lebeau, Alicia V. Boix
Summary: In this study, SBA-15 and SBA-16 ordered mesoporous silicas were synthesized with different morphologies and copper and cerium oxides were introduced using incipient wetness impregnation and solid-state impregnation methods. The best catalytic performance was achieved with the incipient wetness impregnation method, particularly with the fiber-shaped SBA-15 catalyst. The irregular-shaped SBA-16 catalyst also showed good catalytic activity.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Physical
Joanna Wisniewska, Izabela Sobczak, Maria Ziolek
Summary: This study investigated the effects of calcium and niobium on the activity of gold catalysts in methanol oxidation under different conditions. It was found that the presence of calcium and niobium had a synergistic effect on the activity of the gold catalyst, while niobium directed the selectivity of the reaction. The oxidation states and concentration of catalyst components remained unchanged during the methanol oxidation reaction.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Zengran Sun, Ellis Hammond-Pereira, Xianghui Zhang, Di Wu, Steven R. Saunders
Summary: Reversible ionic liquids (RevILs) are used to synthesize colloidal gold nanoparticles and can switch between molecular and ionic forms. The RevIL-stabilized gold nanoparticles are deposited in the pores of SBA-15 mesoporous silica, which enhances their thermal stability and catalytic performance in the selective oxidation reaction of benzyl alcohol.
APPLIED CATALYSIS A-GENERAL
(2022)
Article
Chemistry, Physical
Jean-Luc Blin, Laure Michelin, Benedicte Lebeau, Anton Naydenov, Ralitsa Velinova, Hristo Kolev, Pierrick Gaudin, Loic Vidal, Anna Dotzeva, Krasimir Tenchev, Silviya Todorova
Summary: New data on the structural and catalytic properties of mono-component cobalt and bi-component Co-Ce catalysts supported on SBA-15 are reported. Performance evaluation was conducted through combustion tests of methane, propane, and n-hexane, showing different catalytic activity and reducibility among these catalysts.
Article
Chemistry, Physical
Rui Tang, Niamat Ullah, Zhenhua Li
Summary: Introducing promoters on Ni-based catalysts has been proven to enhance their performance in CO2 methanation. The correlation between the promotion mechanism and the reaction pathway is significant for designing efficient catalysts. In this study, Zr-promoted SBA-15 supported Ni catalysts were prepared, and it was found that the addition of citric acid improved CH4 selectivity and the presence of Zr species on the support activated CO2. The ZrNi-1.7(CI) catalyst showed excellent catalytic performance with high CO2 conversion and CH4 selectivity, as well as good stability without carbon deposits after 50 hours of testing.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Applied
J. Arturo Mendoza-Nieto, Alfredo Vizueth-Montes de Oca, Lina A. Calzada, Tatiana E. Klimova
Summary: In this study, different SBA-15 supports with varying compositions were used to prepare trimetallic CoMoW and NiMoW catalysts for deep hydrodesulfurization reactions. The addition of titania and zirconia to the supports resulted in higher catalytic activity, particularly for the Ni-promoted samples. Among these catalysts, NiMoW/Zr-SBA-15 showed the highest activity for sulfur removal, with twice the activity compared to NiMoW/SBA-15 analog. The dispersion of metal species on the sulfided NiMoW/Zr-SBA-15 sample was identified as the key factor contributing to its superior activity. Additionally, catalyst selectivity was found to be more dependent on the promoter used rather than the support's chemical composition.
Article
Chemistry, Applied
Vahide Nuran Mutlu, Selahattin Yilmaz
Summary: The glycosidation of glucose with n-butanol was studied using sulphated Zr and tungstophosphoric acid incorporated SBA-15 catalysts, showing improved acidity and higher yields of butyl glucoside. The TPA-SBA-15 catalyst demonstrated the highest activity and selectivity, with stable and reusable performance. Further studies on reaction temperature and catalyst amount were conducted to optimize the reaction parameters.
Article
Chemistry, Physical
Yan Shao, Yifan Yan, Jingshan Wang, Qijie Jin, Haitao Xu, Xueying Zhang
Summary: This study presents a method for creating Co nanoparticles on SBA-16 mesoporous molecular sieve coating grown on a 3D-printed ceramic monolith. The Co@SBA-16/ceramic catalysts showed excellent catalytic performance for the continuous removal of levofloxacin in fixed bed reactors. These catalysts exhibited better dispersion of the active site within the molecular sieve coating, leading to improved catalytic activity and reusability. Co@SBA-16/ceramic-1 showed superior catalytic activity, reusability, and long-term stability compared to Co-AG@SBA-16/ceramic.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Inorganic & Nuclear
Chunyan Sun, Simin Huang, Mengru Huang, Xiangrui Zhang, Shusheng Xu, Hui Wang, Yanyan Chen, Xue-Rong Shi
Summary: Single-metal-atom catalysts supported on graphdiyne show great potential for catalyzing low temperature CO oxidation due to high catalytic activity, clear structure, uniform metal distribution, and low cost. Different reaction mechanisms were discussed for four M@GDY catalysts, with Cu@GDY identified as a potentially efficient catalyst based on calculated reaction barriers.
DALTON TRANSACTIONS
(2021)
Article
Plant Sciences
Anh Tuan Hoang, Ranjna Sirohi, Ashok Pandey, Sandro Nizetic, Su Shiung Lam, Wei-Hsin Chen, Rafael Luque, Sabu Thomas, Muslum Arici, Van Viet Pham
Summary: This paper presents recent advances and potential advantages of microalgae in biofuel production, as well as their role in the energy and environmental sectors. The challenges related to cultivation, harvesting techniques, and downstream processes are discussed, along with promising solutions for industrial-scale production. Additionally, the paper analyzes the role of microalgae in the circular economy.
PHYTOCHEMISTRY REVIEWS
(2023)
Article
Materials Science, Ceramics
Nosheen Farooq, Rafael Luque, Thomas Len, Sameh M. Osman, Ashfaq Mahmood Qureshi, Muhammad Altaf Nazir, Aziz ur Rehman
Summary: P-type semiconductor SrZr0.1Mn0.4Mo0.4Y0.1O3-delta (SZMMY) is composited with n-type ZnO to prepare a solid oxide electrolyte with improved properties for low-temperature fuel cells. The nanocomposite electrolyte material shows enhanced ionic conductivity, power density, and current density at lower temperatures. The structural analysis confirmed a dual-phase crystalline structure, and the electrochemical impedance spectra demonstrated lower charge transfer resistance. The heterostructure nanocomposite SZMMY-ZnO inhibits electronic conduction and achieves high ionic conductivity, resulting in improved fuel cell performance.
CERAMICS INTERNATIONAL
(2023)
Article
Environmental Sciences
Claudia Castaneda, Diana Santos, J. Sebastian Hernandez, Andres Alvarez, Hugo Rojas, Ricardo Gomez, Fatemeh Rajabi, Jose J. Martinez, Rafael Luque
Summary: This study aimed to investigate the photocatalytic degradation of 4-chlorophenol using NiO/F-TiO2 composites. F-TiO2 support was prepared by fluorination of TiO2 using the sol-gel method. Heterostructured materials were prepared with varying NiO content. The characterization studies revealed that TiO2 coupled with fluoride ions promoted the generation of Ti-F surface species, leading to improved photoactivity and higher degradation percentages of the phenolic contaminant. The optimum photocatalytic treatment was observed with 1.0% wt of NiO content.
Article
Environmental Sciences
Bryan Fernando Rivadeneira-Mendoza, Otoniel Anacleto Estrela Filho, Kevin Jhon Fernandez-Andrade, Fabiola Curbelo, Fausthon Fred da Silva, Rafael Luque, Joan Manuel Rodriguez-Diaz
Summary: This study summarizes and analyzes the use of new hybrids between biomass and metal-organic frameworks (MOF@biomass) in the adsorption process of pollutants. The results show that the functionalization of biomass with MOFs can lead to hybrid materials with higher adsorption capacity. This research is of great significance for environmental protection and industrial applications.
ENVIRONMENTAL RESEARCH
(2023)
Review
Environmental Sciences
Kelvin Adrian Sanoja-Lopez, Kevin Alberto Quiroz-Suarez, Alex Alberto Duenas-Rivadeneira, Naga Raju Maddela, Maria C. B. S. M. Montenegro, Rafael Luque, Joan Manuel Rodriguez-Diaz
Summary: The excessive contamination of drinking water sources by pesticides has harmful effects on human health and the environment. Filtration by polymeric membranes has been identified as a promising technique to address this issue. Functionalization of polymeric membranes has been explored to enhance pesticide retention results.
ENVIRONMENTAL RESEARCH
(2023)
Review
Energy & Fuels
Yu Li, Yingji Wu, Kouqi Liu, Seyed Ali Delbari, Aejung Kim, Abbas Sabahi Namini, Quyet Van Le, Mohammadreza Shokouhimehr, Changlei Xia, Ho Won Jang, Rajender S. Varma, Rafael Luque
Summary: The demand for sustainable and ecofriendly materials has increased in recent decades. Metal-organic frameworks (MOFs) have attracted significant interest due to their unique chemical and physical properties. They have been utilized in various chemistries to convert biomass into biofuels and other valuable compounds. This review article discusses the conversion of glucose into 5-hydroxymethylfurfural (HMF) or levulinic acid, HMF into 2,5-furandicarboxylic acids, vanillin into 2-methoxy-4-methylphenol, and other transformations using MOF-based catalysts with improved green credentials. The article also examines the reusability aspect, reactivity of the catalysts with MOFs, benefits, and potential drawbacks, as well as future perspectives.
Article
Energy & Fuels
Awais Ahmad, Mushkbar Zahra, Fakhar e Alam, Shafaqat Ali, Muhammad Pervaiz, Zohaib Saeed, Umer Younas, Muhammad Mushtaq, Saravanan Rajendran, Rafael Luque
Summary: Biochar has been recognized for its eco-friendly nature and ability to remove hazardous pollutants from the environment. Different alteration technologies have been proposed to enhance the removal capacity of biochar against these pollutants, including the use of nano-materials and biochar-based nano-composites. These composites have shown higher efficiency in removing and degrading toxic elements. The paper focuses on the production and modification of biochar through sustainable means and its applications in waste management, with a specific focus on bio-fuel and bio-energy production.
Correction
Chemistry, Physical
Ana Alice Farias da Costa, Alex de Nazare de Oliveira, Roberto Esposito, Christophe Len, Rafael Luque, Renata Coelho Rodrigues Noronha, Geraldo Narciso da Rocha Filho, Luis Adriano Santos do Nascimento
Article
Chemistry, Physical
Yi Tan, Zhi-Xiang Xu, Xue-Qin Ma, Shi-Yong Wu, Bo Zhang, Rafael Luque
Summary: To prepare low nitrogen content hydrochar, Na2SO3 and NaHSO3 were used as additives to remove nitrogen from sewage sludge during hydrothermal carbonization. The maximum removal efficiency of nitrogen in hydrochar can increase by 68.68% at 210 degrees C when 10% of Na2SO3 was added, indicating that Na2SO3 has a greater capability than NaHSO3. The key role of Na2SO3 is the degradation of extracellular polymeric substances (EPS) to release polysaccharides and destroy proteins structure, thereby inhibiting Maillard reaction and reducing nitrogen content in hydrochar.
MOLECULAR CATALYSIS
(2023)
Article
Engineering, Chemical
Ana Isabel Martin-Perales, Daily Rodriguez-Padron, Alina M. Balu, Samy Halloumi, Irene Malpartida, Rafael Luque
Summary: This study explores the potential of combining continuous flow and mechanochemistry for biomass valorization. The results show that the combination of continuous flow and mechanochemistry can achieve excellent conversion, selectivity, and yield in the production of vanillin using sustainable biomass-derived feedstocks such as isoeugenol and vanillyl alcohol, without the need for catalysts.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Eliana Nope, Angel G. Sathicq, Jose J. Martinez, Gustavo P. Romanelli, Rafael Luque
Summary: The transfer hydrogenation of furfural to furfuryl alcohol using mixed oxides derived from ternary hydrotalcites was studied. The structure of hydrotalcite-type materials collapsed during calcination, resulting in the formation of mixed oxides with larger surface areas and stronger basic sites. The yields to furfuryl alcohol were strongly affected by the type of Me2+ in the layered oxides and the hydrogen donor employed in the reaction. The mixed oxide containing Co2+ showed complete conversion of furfural and high yields to furfuryl alcohol (>95%) at short reaction times (<1 h).
Article
Environmental Sciences
Otoniel Anacleto Estrela Filho, Bryan Fernando Rivadeneira-Mendoza, Kevin Jhon Fernandez-Andrade, Luis Angel Zambrano-Intriago, Fausthon Fred da Silva, Rafael Luque, Fabiola D. S. Curbelo, Joan Manuel Rodriguez-Diaz
Summary: The considerable amount of produced water discharged by the oil industry can cause environmental imbalance due to its harmful components. This study investigated the adsorption capacity of Zinc Imidazolate Framework-8 (ZIF-8) for crude oil removal from synthetic produced water. ZIF-8 exhibited high crystallinity and thermal stability, and its adsorption process was found to be spontaneous and exothermic.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Jennifer Maria Navia Mendoza, Bryan Fernando Rivadeneira Mendoza, Jaime Cevallos Mendoza, Alina M. Balu, Rafael Luque, Luis Angel Zambrano Intriago, Joan Manuel Rodriguez-Diaz
Summary: In this study, a hybrid material MIL-53(Al)@HC was synthesized and demonstrated to have excellent adsorption capability for Ibuprofen sodium salt and Metsulfuron-methyl in a binary system. The hybrid material showed in situ crystal growth capability and could remove >98% of the target substances at extreme conditions. The adsorption kinetics and equilibrium were well described by the pseudo-second order model and the Sips and Freundlich models.
ENVIRONMENTAL RESEARCH
(2024)
Article
Chemistry, Inorganic & Nuclear
Viviana Bressi, Thomas Len, Daniele Polidoro, Roberto Esposito, Michal Mazur, Maurizio Selva, Claudia Espro, Rafael Luque
Summary: This article discusses the preparation of straight lines of palladium particles on zinc oxide through wet impregnation, stabilizing the metal particles with the highly stepped morphology of ZnO that provides steric anchoring sites. The dispersed Pd/ZnO catalyst demonstrates significantly superior performance in the Suzuki-Miyaura cross-coupling reaction compared to Pd/Al2O3 and Pd/TiO2 catalysts.
DALTON TRANSACTIONS
(2023)
Article
Environmental Sciences
Zhi-Xiang Xu, Yi Tan, Xue-Qin Ma, Bin Li, Yong-Xing Chen, Bo Zhang, Sameh M. Osman, Jing-Yang Luo, Rafael Luque
Summary: This study presents a method for designing wood bio-adhesives using sewage sludge extracts (SSE). The SSE was obtained from sewage sludge using deep eutectic solvents, and then processed with glycerol triglycidyl ether (GTE) to disrupt protein structure. The bio-adhesive produced had sufficient wet shear strength and improved quality through Maillard reaction and dehydration. This method offers a more environmentally friendly and economically efficient approach for utilizing sewage sludge and developing bio-adhesives for the wood industry.
ENVIRONMENTAL RESEARCH
(2023)
