Article
Chemistry, Applied
Christopher M. A. Parlett, Hamidreza Arandiyan, Lee J. Durndell, Mark A. Isaacs, Antonio Torres Lopez, Roong J. Wong, Karen Wilson, Adam F. Lee
Summary: The article demonstrates a method for continuous flow synthesis of SBA-15 at high yield at 80 degrees C using a simple tube reactor. The resulting SBA-15 exhibits excellent textural properties and far higher productivity than previously reported in batch or flow synthesis.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Engineering, Environmental
Siyavash Kazemi Movahed, Parvin Jafari, Shadpour Mallakpour
Summary: In this study, ruthenium-nickel bimetallic nanoparticles embedded in nitrogen-doped carbon mesoporous spheres (RuNi@ N-CMS) were prepared and used as a novel catalyst. The as-synthesized RuNi@ N-CMS nanostructure exhibited superior catalytic activity compared to Ni@ N-CMS and Ru@ NCMS nanostructures due to the synergistic effects of ruthenium-nickel. The catalyst showed promising potential in the hydrogenation of p-nitrophenol and reduction of nitroarene derivatives.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Jiajuan Li, Zizhu Wang, Yirui Ma, Caiyun Xu, Shenghu Zhou
Summary: In this study, mesoporous silica SBA-16-supported NiCo bimetallic nanocatalysts were synthesized and confirmed through various characterization techniques. The synthesized NiCo/SBA-16 showed enhanced catalytic performance for the hydrogenation of nitroaromatics. The improved catalytic performance was attributed to the formation of NiCo bimetallic nanostructures, where the synergistic effect between Ni and Co enhanced their catalytic activities.
Article
Chemistry, Physical
Peter J. Topalian, Bo A. Carrillo, Paul M. Cochran, Michael F. Takemura, Mark E. Bussell
Summary: A series of Ni2-xRuxP/SiO2 catalysts were prepared spanning the full composition space, with Ru playing a key role in lowering the precursor reduction temperature and increasing the P content in the supported Ni2-xRuxP phase. Catalysts with higher Ru content exhibited significantly enhanced HDS activity and selectivity.
JOURNAL OF CATALYSIS
(2021)
Article
Nanoscience & Nanotechnology
Hongbo Yu, Chunzheng Wu, Shiwei Wang, Tong Li, Hongfeng Yin
Summary: The synthesis of highly reactive and stable metal-metal oxide hybrid nanocatalysts by confining presynthesized IrM bimetallic nanoparticles in mesopores of SBA-15 and transforming them in situ to Ir-MOx hybrids has shown superior activity and selectivity in the hydrogenation of substituted nitroaromatics. Among these catalysts, Ir-FeOx/SBA-15 exhibits the highest activity and selectivity, with a wider substrate scope due to the interaction between Ir and FeOx.
ACS APPLIED NANO MATERIALS
(2021)
Article
Environmental Sciences
Zeinab Ezzeddine, Isabelle Batonneau-Gener, Yannick Pouilloux
Summary: The removal of zinc ions from water was studied using two types of ordered mesoporous silica (SBA-15 and SBA-16). Both materials were modified with APTES and EDTA through post grafting methods. The modified adsorbents were characterized by various analytical techniques, and the structural integrity was maintained. Optimal adsorption conditions and maximum adsorption capacity were determined through experimental tests, and the regenerated adsorbent showed no significant decline in adsorption efficiency.
Article
Chemistry, Multidisciplinary
Florian Zand, Suzanne J. T. Hangx, Christopher J. Spiers, Peter J. van den Brink, James Burns, Matthew G. Boebinger, Jonathan D. Poplawsky, Matteo Monai, Bert M. Weckhuysen
Summary: Understanding and controlling the structure and composition of nanoparticles in supported metal catalysts are crucial for improving chemical processes. Atom probe tomography (APT) is a powerful tool for three-dimensional chemical imaging of materials with nanometer resolution. However, APT has not been used for mesoporous oxide-supported metal catalysts due to sample fracture. In this study, we developed a high-pressure resin impregnation strategy to overcome this issue and successfully applied APT to high-porous supported Pd-Ni catalyst materials active in CO2 hydrogenation. Our results demonstrate the capability of APT to quantitatively assess the size, composition, and metal distribution of nanoparticles in industrial catalysts.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Applied
Wipark Anutrasakda, Pawnprapa Pitakjakpipop
Summary: This study synthesized nickel phosphide nanocatalysts with different ratios and investigated their performance in the conversion of cellobiose to sorbitol. The results showed that different crystalline phases of nickel phosphide influenced the product proportions, and the impact of reaction temperature and support materials on catalytic performance was also studied.
Article
Physics, Applied
Fnu Gorky, Shelby R. Guthrie, Courtney S. Smoljan, James M. Crawford, Moises A. Carreon, Maria L. Carreon
Summary: The mesoporous SBA-15 silica material demonstrated significantly higher efficiency in synthesizing ammonia through atmospheric dielectric barrier discharge plasma, mainly due to its hierarchically ordered pore structure that facilitates the diffusion of plasma discharge into the pores.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(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
Chemistry, Physical
Elham Chiani, Seyed Naser Azizi, Shahram Ghasemi
Summary: The novel electrocatalyst based on PdCu bimetallic nanoparticles supported on ordered mesoporous silica and multi-walled carbon nanotubes showed excellent catalytic performance for the electrochemical hydrogen evolution reaction. The use of mesoporous SBA-15 and MWCNTs as supports enhanced the efficiency of the catalytic process, providing a low loading of bimetallic catalyst with high catalytic activity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Chemical
Daniel Ballesteros-Plata, Isabel Barroso-Martin, Juan Andres Medina Cervantes, Carmen Maciel, Rafael Huirache-Acuna, Enrique Rodriguez-Castellon, Antonia Infantes-Molina
Summary: The addition of iron, cobalt, or nickel to a prepared niobium-supported catalyst using mesoporous silica SBA-15 as a support significantly influenced the hydrodeoxygenation (HDO) reaction of anisole. Nickel incorporation showed the highest anisole conversion and selectivity to deoxygenated products, followed by cobalt and iron. The superior performance of NiNb/SBA-15 was associated with its lower acidity, higher Nb/Si surface exposure, NbO2/Nb2O5 ratio, and better interaction between nickel and niobium species.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Engineering, Environmental
Jiafu Qu, Songqi Li, Zhiyuan Deng, Jundie Hu, Xiaogang Yang, Yahui Cai, Feng Du, Bailing Zhong, Chang Ming Li, Qiming Sun
Summary: Converting CO2 to formic acid/formate is crucial for future energy storage, and developing high-performance catalysts is essential for this process. In this study, highly dispersed Pd-Ni(OH)2 hybrids were immobilized on ordered mesoporous silica SBA-15, showing exceptional catalytic performance and stability. The optimized Pd5Ni5/SBA-15 catalyst achieved a significantly higher formate generation rate compared to monometallic Pd counterpart, due to its charge polarization action and synergy between bimetallic components. The catalyst also exhibited excellent cycling durability. The results suggest great potential of these catalysts for CO2 hydrogenation to formate.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Applied
Zhe Wang, Rui Sun, Pengwei Wang, Wei Wang
Summary: This study successfully prepared rod-shaped SBA-15 nanoparticles with 2-3 mesopore channels, showing potential for biomedical applications. Through a specific preparation method, SBA-15NPs exhibited higher surface area, pore volume, and faster adsorption rate in enzyme adsorption tests compared to conventional rod-shaped SBA-15.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
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
Chemistry, Physical
Abdul Jaleel Laghari, Umair Aftab, Aneela Tahira, Aqeel Ahmed Shah, Alessandro Gradone, Muhammad Yameen Solangi, Abdul Hanan Samo, Mukesh Kumar, Muhammad Ishaque Abro, Muhammad Wasim Akhtar, Raffaello Mazzaro, Vittorio Morandi, Amerah Mutlaq Alotaibi, Ayman Nafady, Antonia Infantes-Molina, Zafar Hussain Ibupoto
Summary: The Co3O4-MgO (CM) composite was synthesized by wet chemical method, which showed efficient oxygen evolution reaction (OER) due to the abundant oxygen vacancies and Co2+ concentration. Although MgO was inactive towards OER, it facilitated the formation of oxygen vacancies and Co2+ ions, accelerating OER kinetics. Physical studies and analytical techniques were used to investigate the morphology, crystalline structure, surface information, and chemical composition of the CM composite. The optimized CM-0.1 composite exhibited lower overpotential and higher electrochemical activity, indicating its enhanced OER performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Polymer Science
Luisa Macedo de Vasconcelos, Niedja Fittipaldi Vasconcelos, Diego Lomonaco, Morsyleide de Freitas Rosa, Enrique Rodriguez-castellon, Fabia Karine Andrade, Rodrigo Silveira Vieira
Summary: Bacterial cellulose (BC) membrane is a biopolymer with high purity and excellent properties. In this study, microwave-assisted chemical modification was used to oxidize wet BC membranes, while preserving their physical and mechanical properties. The results showed that microwave heating method can better protect the structure of cellulose, improve the oxidation effect, and have less impact on the crystalline structure of cellulose.
Article
Engineering, Mechanical
Paulo Roberto Campos Flexa Ribeiro Filho, Matheus Rocha do Nascimento, Silvia Shelly Otaviano da Silva, Francisco Murilo Tavares de Luna, Enrique Rodriguez-Castellon, Celio Loureiro Cavalcante Jr
Summary: This study synthesized bio-based lubricants from the fatty acids of castor oil through esterification, epoxidation, and oxirane ring opening reactions. The sample obtained through the oxirane ring opening with water showed the best frictional performance and a lower friction coefficient compared to the commercial mineral oil.
Article
Polymer Science
Luis M. Araque, Claudio J. Perez, Antonia Infantes-Molina, Enrique Rodriguez-Castellon, Guillermo J. Copello, Juan M. Lazaro-Martinez
Summary: Two responsive PEI hydrogels (P1.5E and P2E) with different cross-linking degrees were synthesized using a click reaction and without organic solvents. The hydrogel's swelling and rheological behavior were dependent on the cross-linking degree, and the hydrogels showed stimuli-responsive behavior to pH or ionic strength changes. The hydrogels also exhibited adsorption capacity for methyl orange (MO) dye and Cu2+ ions, with P1.5E showing higher sorption capacities. Germination experiments with lettuce seeds confirmed that the hydrogels did not release toxic molecules.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Mariana Schneider, Karina Cesca, Suelen Maria de Amorim, Dachamir Hotza, Enrique Rodriguez-Castellon, Regina F. P. M. Moreira
Summary: The use of nanofluids in enhanced oil recovery processes has gained attention due to the possibility to increase oil recovery from mature oil fields. Silica nanoparticles are widely used for nanofluid formulations, but there are obstacles such as stability, environmental and economic aspects, and the need for suitable large-scale production processes. This study evaluates oil recovery using silica-based nanofluids from different sources under various operational conditions, and demonstrates that silica from rice husk ash has comparable efficiency to other synthetic silica nanoparticles.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Green & Sustainable Science & Technology
Daniel Ballesteros-Plata, Yue Zhang, Enrique Rodriguez-Castellon, Thierry Vincent, Eric Guibal
Summary: In this study, brown algal biomass residue obtained after bio-stimulant extraction was used for the removal of hazardous metals, including Ni(II), Cd(II), and La(III), from aqueous solutions. The residue showed a strong affinity for metal cations and achieved equilibrium within 180-240 min. This research demonstrates the potential valorization of industrial waste for the recovery of hazardous and strategic metal ions.
ADVANCED SUSTAINABLE SYSTEMS
(2023)
Article
Engineering, Environmental
Daniela Gier Della Rocca, Bruna Hedel, Enrique Rodriguez-Castellon, Regina F. P. M. Moreiraa
Summary: The use of ceramic membranes for microfiltration has increased due to their high performance and physical-chemical properties. However, their production is expensive. Geopolymeric membranes (GPMs) have been developed as a cheaper alternative by incorporating industrial waste. In this study, GPMs were synthesized by incorporating magnetic mining waste (MMW) and were used successfully to remove trimethoprim antibiotic from an aqueous solution.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Marilia R. Oliveira, Juan A. Cecilia, Daniel Ballesteros-Plata, Isabel Barroso-Martin, Pedro Nunez, Antonia Infantes-Molina, Enrique Rodriguez-Castellon
Summary: The global demand for energy and industrial growth has led to a significant increase in the use of fossil fuels. In order to reduce CO2 emissions, this study explores the use of microwave irradiation as an alternative to conventional heating for zeolite A synthesis. The results demonstrate that microwave irradiation can effectively synthesize zeolite A while reducing both temperature and time.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Multidisciplinary Sciences
J. A. Cecilia, E. Vilarrasa-Garcia, D. C. S. Azevedo, A. Vilchez-Cozar, A. Infantes-Molina, D. Ballesteros-Plata, I. Barroso-Martin, E. Rodriguez-Castellon
Summary: Wipe wastes can be used to produce biochars with high microporosity, which exhibit significant CO2 adsorption capacity. Further treatment with KOH can enhance the microporosity of biochars.
Article
Chemistry, Multidisciplinary
Oscar Trentin, Daniele Polidoro, Alvise Perosa, Enrique Rodriguez-Castellon, Daily Rodriguez-Padron, Maurizio Selva
Summary: Investigations into the potential of mechanochemistry in the design and application of nanosized catalysts have successfully synthesized supported palladium nanoparticles. These nanoparticles were then used as catalysts in the Suzuki-Miyaura cross-coupling reaction, achieving high productivity of the desired product.
CHEMISTRY-SWITZERLAND
(2023)
Article
Chemistry, Multidisciplinary
Adeel Liaquat Bhatti, Aneela Tahira, Shusheel Kumar, Zaheer Ahmed Ujjan, Muhammad Ali Bhatti, Sooraj Kumar, Umair Aftab, Amal Karsy, Ayman Nafady, Antonia Infantes-Molina, Zafar Hussain Ibupoto
Summary: In this study, Co3O4 nanostructures were synthesized using the milky sap of Calotropis procera and their performance in oxygen evolution reactions and supercapacitor applications were investigated. The results showed that the Co3O4 nanostructures prepared using the milky sap of CP exhibited good electrochemical performance and could be widely applied in energy conversion and storage devices.
Article
Chemistry, Physical
Daniele Polidoro, Daniel Ballesteros-Plata, Alvise Perosa, Enrique Rodriguez-Castellon, Daily Rodriguez-Padron, Maurizio Selva
Summary: A series of catalysts based on non-noble metal nanoparticles supported on chitin-derived N-doped carbons were prepared through a one-step protocol in the presence of EDTA as a ligand. The synthesized materials were tested in the catalytic oxidation of alcohols to aldehydes and ketones, and Mo-N/C materials exhibited the best performance.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Ayelen F. Crespi, Paula N. Zomero, Ana L. Perez, Carlos D. Brondino, Antonia Infantes Molina, Yamila Garro Linck, Gustavo A. Monti, Mariela A. Fernandez, Enrique Rodriguez-Castellon, Juan M. Lazaro-Martinez
Summary: The aim of this study was to propose the use of new heterogeneous catalysts based on montmorillonite materials to remove emerging pollutants. The catalytic activity of the composites was demonstrated by their ability to degrade pollutants and produce non-toxic waste.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Polymer Science
Luis M. Araque, Roberto Fernandez de Luis, Arkaitz Fidalgo-Marijuan, Antonia Infantes-Molina, Enrique Rodriguez-Castellon, Claudio J. Perez, Guillermo J. Copello, Juan M. Lazaro-Martinez
Summary: This research explores the integration of DUT-67 metal organic frameworks into polyethyleneimine-based hydrogels to assemble a composite system with enhanced mechanical properties and adsorption capacities. The study demonstrates successful modulation of the particle size of DUT-67 and the incorporation of MOF filler into the polymeric hydrogel. The composite hydrogel exhibits rapid adsorption kinetics and higher adsorption capacities for environmental pollutants and pharmaceuticals.
Article
Chemistry, Multidisciplinary
Felipe Fernandes Barbosa, Joao Edson Tavares, Anderson dos Reis Albuquerque, Marco Antonio Morales Torres, Enrique Rodriguez-Castellon, Sibele B. C. Pergher, Tiago Pinheiro Braga
Summary: This study investigates the glycerol conversion into acetol using Fe, Al and Cu-based oxides as catalysts. The results show the formation of nanosized particles with high phase dispersion and the presence of iron(iii) oxide, Al2O3 and CuO phases. The catalyst exhibits high Lewis acidity and suitable pretreatment conditions. The presence of micro-mesopores with interesting textural properties and specific area is observed. The optimized catalytic tests show high conversion and selectivity, and the recycling tests confirm the efficiency and stability of the catalyst.
Article
Chemistry, Physical
Ming-Yi Chen, Ngoc Thanh Thuy Tran, Ahmed Abubakar Alao, Wen-Dung Hsu
Summary: This study demonstrates the significance of surface Pt atom arrangement for the efficiency of ORR in PEMFCs and reveals the correlation between Pt-Pt average distance and O2 dissociation barrier. Furthermore, the study discovers a robust correlation between the level of the catalyst's d-band center and O2 adsorption energy. High-entropy alloy substrates provide potential for controlling Pt arrangement and O2 dissociation barrier.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Eduardo C. Atayde Jr, Babasaheb M. Matsagar, Yu-Cheng Wang, Kevin C. -W. Wu
Summary: This study presents the first application of an acidic MOF, Sulfated MOF-808, in catalyzing the HAA reactions of furan oligomers for the production of biofuel precursors. The catalyst showed high yield, selectivity, and recyclability, making it versatile for different starting materials.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Maria do Carmo Rangel, Francieli Martins Mayer, Soraia Jesus de Oliveira, Sergio Gustavo Marchetti, Fabricio Luiz Faita, Doris Ruiz, Giovanni Saboia, Mariana Kieling Dagostini, Jonder Morais, Maria do Carmo Martins Alves
Summary: This study developed a new catalyst by investigating the effect of magnesium on the catalytic properties of hematite in ethylbenzene dehydrogenation. The catalyst showed important differences in activity, selectivity, and stability, making it a promising candidate for commercial applications.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yanjun Li, Qian Wang, Hui Tian, Mingyuan Zhu, Yuanyuan Liu
Summary: A novel strategy using microwave-assisted precipitation was proposed to prepare defective CsH3PMo11VO40 catalyst for the oxidation of methacrolein to methacrylic acid. Microwave treatment accelerates crystallization, increases vanadyl species content, and forms defective Keggin structures, thereby enhancing the oxidation capacity of the catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Rajeshwari Athavale, Sailee Gardi, Fatima Choudhary, Dayanand Patil, Nandkishor Chandan, Paresh More
Summary: In this study, a novel acidic ionic liquid catalyst was prepared and used for the synthesis of bis-indolyl methane derivatives. The catalyst exhibited short reaction times, easy purification, and reusability.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Masatomo Hattori, Takato Hattori, Masakuni Ozawa
Summary: Cu-added gamma-Al2O3 catalysts were prepared with varying Cu loadings and the effects of copper oxidation states on catalytic activity were investigated. The results showed that the addition of copper increased the catalyst activity, but excessive copper loading decreased catalytic activity. XRD and TEM analysis indicated the formation of a solid solution of copper oxide species on the surface of gamma-Al2O3. XAS and TPR data demonstrated variations in copper oxidation states among the catalysts.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liwei Fang, Shiyang Niu, Shengsen Wang, Yiqing Lu, Yuanhui Cheng
Summary: In this study, PtNi alloy on nitrogen-doped carbon and SnO2 dual-support was designed to modulate the metal-support interaction, resulting in improved catalytic activity and stability for oxygen reduction reaction. The SnO2/PtNi/NC catalyst exhibited a strongly coupled interface, enhanced electron transfer, and higher half-wave potential compared to PtNi/NC and commercial Pt/C.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Shohei Harada, Duanxing Li, Kenta Iyoki, Masaru Ogura
Summary: This study investigates the catalytic performance of a composite catalyst composed of ZnZrOX and H-zeolite for the hydrogenation of CO2. The deactivation of the composite catalyst is influenced by ion exchange of Zn2+ and/or coke, with their effects differing based on the zeolite structure. Separating the grains of the composite catalyst can prevent deactivation.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Laura Proano, Christopher W. Jones
Summary: In this study, NiGa alloy particles supported on CeO2, ZrO2, and ZrO2-CeO2 solid solutions were prepared and characterized. The nature of the support was found to have a significant influence on the catalyst's activity and selectivity, with the crystalline structure of ZrO2 having the greatest impact. Pure ZrO2 showed the highest methanol selectivity and CO2 conversion at high Zr:Ce ratios. In equimolar and Ce-rich conditions, basic sites and oxygen vacancies were found to be the key parameters affecting methanol production.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liyan Zhang, Yinze Yang, Leilei Zhou, Fengyu Zhao, Haiyang Cheng
Summary: 1,6-Hexamethylenediamine was successfully synthesized via the reductive amination of 1,6-hexanediol using a Ru/PRL(x)-Al2O3 catalyst. The highly dispersed and anchored Ru species, formed by 1,10-phenanthroline (PRL), played a crucial role in the catalytic reaction. The formation of new acid-base pairs, electron deficient Ru species, and smaller nanoparticles contributed to the improved catalytic performances of the Ru/PRL-Al2O3 catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Anita Horvath, Miklos Nemeth, Andrea Beck, Gyorgy Safran, Valeria La Parola, Leonarda Francesca Liotta, Gregor Zerjav, Matevz Roskaric, Albin Pintar
Summary: This study investigates the catalytic and structural changes caused by the addition of 0.25 wt% indium in a 3% Ni/CeO2-Al2O3 catalyst prepared by impregnation method. The results show that the addition of indium can decrease the activity of the catalyst, but it improves its stability and reduces coking.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Ankush Kularkar, Vaibhav Vilas Khedekar, Sachin D. Chaudhari, Mudavath Ravi, Sadhana S. Rayalu, Penumaka Nagababu
Summary: Efficiently addressing the challenges of photocatalytic CO2 reduction to CH3OH is crucial. This study developed Zn-BTC MOF and its composites with CaIn2S4, achieving highly efficient and robust photocatalytic CO2 reduction to CH3OH under ambient conditions, using H2O2 as the hydrogen source. Among the composites, ZMCIS4 demonstrated excellent performance with a CH3OH evolution of 49100 μmol/g.cat and a quantum efficiency of approximately 78.41%. The enhanced performance was attributed to the production of nascent hydrogen atoms (H center dot) through the photo-splitting of H2O2 on the ZMCIS surface.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Dan Liu, Yudong Li, Chengyu Wang, Haiyue Yang, Rong Wang, Shujun Li, Xiaohui Yang
Summary: In this study, a self-supporting three-dimensional porous Co3O4 nanobelt array decorated on nickel foam (P-Co3O4 -NBA@NF) electrode with numerous active sites was successfully constructed for the oxidation of 5-Hydroxymethylfurfural (HMF) to 2,5-furan dicarboxylic acid (FDCA). The P-Co3O4 -NBA@NF electrode demonstrated high conversion efficiency, selectivity, and Faraday efficiency, as well as remarkable long-term stability. This research provides a promising electrocatalyst for biomass conversion.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yimin Li, Enggah Kurniawan, Fumiya Sato, Takayoshi Hara, Yasuhiro Yamada, Satoshi Sato
Summary: In this study, several silica-alumina catalysts modified with Ag were examined for the dehydration of 1,3-butanediol to 1,3-butadiene. Among them, an amorphous silica-alumina catalyst (SAL-3) modified with Ag showed the highest improvement in catalytic activity and stability when operated in H2 flow. The generation of reversible acid sites was found to be the reason behind the enhanced activity and stability of this Ag/SAL-3 catalyst. The effects of various parameters on the catalytic activity of Ag/SAL-3, such as reaction temperature, contact time, Ag content, and carrier gas, were investigated.
APPLIED CATALYSIS A-GENERAL
(2024)
