Article
Chemistry, Physical
Sumaiya Zainal Abidin, Misbahu Ladan Mohammed, Basudeb Saha
Summary: This study developed a novel two-stage method for synthesizing biodiesel from used cooking oil using ion exchange resins as catalysts. The best catalytic performance was achieved using Purolite D5081 resin for esterification and Diaion PA306s resin for transesterification. The optimized reaction conditions resulted in a triglyceride conversion of approximately 75%, and the Diaion PA306s catalyst showed good reusability without losing its activity.
Article
Engineering, Chemical
Leandro G. Aguiar, William M. Godoy, Leonardo Napolis, Rui P. Faria, Alirio E. Rodrigues
Summary: Two mathematical models were used to quantitatively assess the effect of cross-link density on the catalytic activity of sulfonated styrene-divinylbenzene (DVB) resins, showing that chain segments with six or less monomer units between cross-links contain inaccessible sites for the catalyzed reactions.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Biochemistry & Molecular Biology
Oleksandr Petrov, Natalia Iwaszczuk, Irina Bejanidze, Tina Kharebava, Volodymyr Pohrebennyk, Nato Didmanidze, Nunu Nakashidze
Summary: The study of electrical conductivity of ion-exchange membranes in electrolyte solutions is important for membrane processes and practical electrodialysis. This study aims to determine the electrical conductivity of industrial ion-exchange membranes and their basis-granules, and develop a new methodology to obtain accurate values. The results show that membrane conductivity decreases with increasing ion size.
Article
Metallurgy & Metallurgical Engineering
Atefeh Azizitorghabeh, Harshit Mahandra, Juliana Ramsay, Ahmad Ghahreman
Summary: This study investigates the selective recovery of gold over copper from synthetic and real thiocyanate pregnant leach solution (PLS) using ion exchange resins. The results demonstrate that 100 g/L MTA 5011 resin can achieve 99% gold extraction and 12% copper extraction, while a solution of 0.01 M thiourea (TU) and 0.1 M H2SO4 is the most efficient for gold elution with 70% gold and 4% copper recovery.
Article
Environmental Sciences
Zhen Liu, Morgan Solliec, Isabelle Papineau, Kim M. Lompe, Madjid Mohseni, Pierre R. Berube, Sebastien Sauve, Benoit Barbeau
Summary: This study confirms the contribution of biodegradation on biological ion exchange (BIEX) resins in removing organic micropollutants, while noting that the absence of an adapted bacterial community may lead to lower biodegradation rates. Additionally, nonbiodegradable and neutral micropollutants showed minimal removal during batch tests on BIEX resins.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Biochemistry & Molecular Biology
Esra Altiok, Fatma Sen, Joanna Wolska, Piotr Cyganowski, Marek Bryjak, Nalan Kabay, Muserref Arda, Mithat Yuksel
Summary: This research investigated the removal of boron and arsenic from geothermal water using newly synthesized gel-like chelating resins. The results showed that the novel resins were able to reduce boron and arsenic concentrations in geothermal water below permissible levels for agricultural irrigation and drinking water. The optimal resin concentration for boron removal was determined to be 2 g/L, while for arsenic removal, a resin concentration of 8 g/L was needed for 94% removal using the novel resins compared to 32 g/L for commercially available resin. Column performance characteristics of the resins were also studied and compared to a commercially available resin.
Article
Nuclear Science & Technology
E. A. Tokar, A. I. Matskevich, M. S. Palamarchuk, Yu. A. Parotkina, A. M. Egorin
Summary: The study found that effective dissolution of hematite can occur in concentrated mineral acid solutions, with direct current enhancing the decontamination efficiency of spent ion exchange resins contaminated with hematite to over 99%. Additionally, the dissolution of hematite is accompanied by secondary adsorption of radionuclides, which can be removed with sodium nitrate solutions.
NUCLEAR ENGINEERING AND TECHNOLOGY
(2021)
Article
Engineering, Environmental
Pedro M. Walgode, Rui P. Faria, Alirio E. Rodrigues
Summary: The goal of this study was to separate dihydroxyacetone from glycerol oxidation products using a cascade of two simulated moving bed units. The results demonstrated that the SMB cascade with a strong cationic exchange resin efficiently achieved this separation process.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Polymer Science
Aleksandr S. S. Kazachenko, Natalia Yu. Vasilieva, Yaroslava D. D. Berezhnaya, Olga Yu. Fetisova, Valentina S. S. Borovkova, Yuriy N. N. Malyar, Irina G. G. Sudakova, Valentin V. V. Sychev, Noureddine Issaoui, Maxim A. A. Lutoshkin, Anton A. A. Karacharov
Summary: This study investigates the use of ion-exchange resins as catalysts for the sulfation of cellulose. It is found that anion exchangers form water-insoluble products, while cation exchangers form water-soluble products. Among the catalysts tested, Amberlite IR 120 is the most effective. The study also shows that an increase in sulfate groups in cellulose derivatives reduces thermal stability.
Article
Chemistry, Multidisciplinary
Yanying Hou, Lujie Liu, Xingxing Zhang, Yuechao Zhu, Yongjun Qiu, Liming Zhao
Summary: Ion exchange resins have been investigated as a potential material for separating chitooligosaccharides (COSs) with different degrees of polymerization. The functional groups of the resin significantly affect the adsorption behavior of COSs. This study focused on the adsorption behaviors of COSs on macroporous cation exchange resins with different functional groups, providing insights into the functional group effect on the adsorption of COSs with different degrees of polymerization.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Engineering, Environmental
Gabriela Cordeiro Silva, Alexandre Carvalho Bertoli, Helio Anderson Duarte, Ana Claudia Queiroz Ladeira
Summary: The ion exchange process for the recovery of rare earth elements from acid waters was studied using experimental and theoretical approaches. The results showed that La had a higher preference than Y during the loading experiments, and approximately 80% of the adsorbed REE could be eluted using a CaCl2 solution. DFT calculations indicated that the functional group in the cation exchange resin acted as a complexing agent.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Nuclear Science & Technology
Chun Ping Huang, Hsin Yu Chen, Wei Hsiang Lin
Summary: Two methods, fluidization with a column and immersion into a solution, were investigated for the separation of anion and cation exchange resins. These methods demonstrated effective separation, reducing the costs of radioactive waste disposal.
PROGRESS IN NUCLEAR ENERGY
(2022)
Article
Metallurgy & Metallurgical Engineering
Rene A. Silva, Yahui Zhang, Kelly Hawboldt, Lesley Anne James
Summary: This study highlights the potential of ion exchange resins with methyl-glucamine and amidoxime groups for successful removal of Fe(III) from synthetic Ni(II) leach liquor, presenting them as promising alternatives to traditional Fe precipitation processes in the base metal industry.
MINERAL PROCESSING AND EXTRACTIVE METALLURGY REVIEW
(2021)
Article
Biochemical Research Methods
Izabela Poplewska, Patrycja Zimoch, Dorota Antos
Summary: This study demonstrates the occurrence of pH excursion in pH gradient elution of monoclonal antibodies (mAbs) on strong cation exchange resins under high overloading conditions. The presence of the proteins affects the pH profiles in both liquid and adsorbed phases, and this effect is enhanced with higher initial pH of the binding buffer and protein concentration. The observed pH transitions for different mAbs on the resins predominantly depend on their adsorption affinity.
JOURNAL OF CHROMATOGRAPHY A
(2022)
Article
Geochemistry & Geophysics
Takeru Kochi, Toshihiro Yoshimura, Nanako O. Ogawa, Naohiko Ohkouchi, Yasuyuki Kobayashi, Junichiro Kuroda
Summary: A method using weakly acidic cation exchange resins was developed to extract sulfur from carbonate minerals, allowing for the measurement of sulfur mass fractions and isotopes.
GEOSTANDARDS AND GEOANALYTICAL RESEARCH
(2023)
Letter
Allergy
Antonio Balas, Elena Ramirez, Elena Trigo, Rosario Cabanas, Ana Fiandor, Marta Arsuaga, Victoria Lerma, Beatriz Sanz, Jose LuisVicario, Pedro Herranz, Francisco de Abajo, Teresa Bellon
JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY-IN PRACTICE
(2020)
Article
Chemistry, Physical
Eliana Ramirez, Roger Bringue, Carles Fite, Montserrat Iborra, Javier Tejero, Fidel Cunill
Summary: The study revealed a correlation between the morphology of swollen resins and ester production, with swollen resins of lower polymer density showing the highest butyl levulinate yield. Dowex 50Wx2 was identified as the most effective catalyst due to its ability to create large and wide spaces in the gel-phase while swelling, accommodating proton-transfer-reaction mechanisms more effectively.
APPLIED CATALYSIS A-GENERAL
(2021)
Article
Health Care Sciences & Services
Alberto M. Borobia, Irene Garcia-Garcia, Lucia Diaz-Garcia, Amelia Rodriguez-Mariblanca, Lucia Martinez de Soto, Jaime Monserrat Villatoro, Enrique Seco Meseguer, Juan J. Gonzalez, Jesus Frias Iniesta, Elena Ramirez Garcia, Jose Ramon Arribas, Antonio J. Carcas-Sansuan
Summary: Health care workers chose to participate in the MeCOVID and EPICOS trials mainly to contribute to scientific knowledge and to avoid SARS-CoV-2 infection. Safety considerations outweighed efficacy when choosing between the two trials.
JOURNAL OF MEDICAL INTERNET RESEARCH
(2021)
Article
Pharmacology & Pharmacy
Laura Pedraza, Olga Laosa, Leocadio Rodriguez-Manas, Diego F. Gutierrez-Romero, Jesus Frias, Jose Antonio Carnicero, Elena Ramirez
Summary: A prospective evaluation of drug-induced liver injury (DILI) in elderly patients over 65 years old showed a higher-than-expected incidence rate, with risk factors including polypharmacy, specific drug use, and patient age.
FRONTIERS IN PHARMACOLOGY
(2021)
Article
Medicine, General & Internal
Enrique S. Meseguer, Mikel U. Elizalde, Alberto M. Borobia, Elena Ramirez
Summary: The study found that drug-induced liver injury caused by valproic acid is associated with polytherapy with other antiepileptic drugs and alcohol consumption, as well as a frequent diagnosis of epileptic seizures. Patients with DILI developed hepatocellular liver injury, while the mild liver injury controls had a higher rate of cholestatic liver injury. High lactate dehydrogenase values were observed in DILI patients compared to control groups.
JOURNAL OF CLINICAL MEDICINE
(2021)
Article
Engineering, Chemical
Rodrigo Soto, Nuray Oktar, Carles Fite, Eliana Ramirez, Roger Bringue, Javier Tejero
Summary: This study investigated the liquid-phase adsorption of n-butanol on Amberlyst(TM)15 at different temperatures and initial concentrations, characterizing the adsorbent structure and active sites. The equilibrium constants were determined from experiments, and thermodynamic functions were estimated to be consistent with physical adsorption. The macropore diffusion coefficients of n-butanol on Amberlyst(TM)15 were also evaluated.
CHEMICAL ENGINEERING & TECHNOLOGY
(2021)
Article
Chemistry, Applied
Jordi H. Badia, Eliana Ramirez, Rodrigo Soto, Roger Bringue, Javier Tejero, Fidel Cunill
Summary: The liquid-phase esterification of levulinic acid with 1-butene over ion-exchange resins was studied to identify the optimal conditions for synthesizing sec-butyl levulinate. Empirical equations were obtained to relate conditions and yields, and the use of response surface methodology allowed for multiobjective optimization to maximize the yield of both reactants. The catalyst AmberlystTM15 was found to be the most promising, and a green metrics analysis confirmed the sustainability of the proposed chemical pathway for SBL synthesis.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Medicine, General & Internal
Ana Delgado, Stefan Stewart, Mikel Urroz, Amelia Rodriguez, Alberto M. Borobia, Ibtissam Akatbach-Bousaid, Miguel Gonzalez-Munoz, Elena Ramirez
Summary: The incidence of DILI in COVID-19 patients was 4.9%, with 80% positive LTT results, and the presence of DILI after COVID-19 was associated with longer hospital stays. An immune mechanism was demonstrated in a small subset of DILI cases.
JOURNAL OF CLINICAL MEDICINE
(2021)
Article
Chemistry, Medicinal
Jaime Monserrat Villatoro, Gina Mejia-Abril, Lucia Diaz Garcia, Pablo Zubiaur, Maria Jimenez Gonzalez, Guillermo Fernandez Jimenez, Ines Cancio, Jose Ramon Arribas, Carmen Suarez Fernandez, Jesus Mingorance, Julio Garcia Rodriguez, Jose Ramon Villagrasa Ferrer, Antonio J. J. Carcas, Jesus Frias, Francisco Abad-Santos, Alberto M. M. Borobia, Elena Ramirez
Summary: This study explores the association between previous hospitalization use of medication and the mortality of COVID-19 disease. The results show that certain drugs, such as anticoagulants and antihistamines, are associated with a reduction in mortality, while others, such as acetylsalicylic acid and digoxin, are associated with an increase in mortality. The relationship between medication and recovery may require further clinical trials to determine.
Article
Engineering, Chemical
Eloi Canadell, Jordi H. Badia, Eliana Ramirez, Carles Fite, Montserrat Iborra, Javier Tejero
Summary: This study investigates the thermodynamic equilibrium of the liquid phase esterification of levulinic acid (LA) with 1-butene (1B) and discusses the side reactions involved. The thermodynamic properties of the reaction were determined experimentally and compared to theoretical estimations and reported literature values.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Pharmacology & Pharmacy
Teresa Bellon, Victoria Lerma, Javier Guijarro, Elena Ramirez, Celia Martinez, Carmelo Escudero, Ana M. M. Fiandor, Ruth Barranco, Manuel de Barrio, Francisco de Abajo, Rosario Cabanas
Summary: This study analyzed the association of the HLA-A*32:01 allele in 14 Spanish DRESS cases caused by vancomycin and evaluated vancomycin sensitization using the lymphocyte transformation test (LTT). The results showed that LTT is a suitable tool to identify patients sensitized to vancomycin and confirmed the association of the risk allele HLA-A*32:01 with vancomycin-induced DRESS in Spanish cases.
FRONTIERS IN PHARMACOLOGY
(2022)
Article
Engineering, Chemical
Jordi H. Badia, Carles Fite, Roger Bringue, Fidel Cunill, Javier Tejero
Summary: The kinetics of the simultaneous synthesis of ETBE and BTBE over A35 catalyst in the liquid phase was investigated. Various kinetic modeling approaches were compared, and it was found that empirical power-law modeling provided the best fit, while mechanistic modeling explained the reaction mechanisms.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
R. Soto, C. Fite, E. Ramirez, J. Tejero, F. Cunill
Summary: The deactivating effect of acetonitrile (ACN) and ACN/water mixtures on the simultaneous syntheses of ethyl tert-butyl ether (ETBE) and tert-amyl ethyl ether (TAEE) over ion-exchange resins was investigated. Deactivation occurred in two stages, with an initial stage where activity did not decrease and a subsequent exponential decay due to neutralization of active sites by ACN-derived compounds. The best kinetic model to describe the activity loss was a first order model, with an estimated activation energy of 33.1 +/- 1.4 kJ mol(-1). The inhibitory effect of water was also evaluated using Langmuir and Freundlich isotherms.
REACTION CHEMISTRY & ENGINEERING
(2023)
Review
Chemistry, Physical
Jordi H. Badia, Rodrigo Soto, Eliana Ramirez, Roger Bringue, Carles Fite, Montserrat Iborra, Javier Tejero
Summary: The role of ion-exchange resins (IERs) in hydrogenation reactions as catalysts or solid supports for catalysts is reviewed, and their potential applications are presented. Various types of IERs, including gel-type and macroreticular, basic or acid ones, have been utilized in metal-catalyzed hydrogenation processes, showing high performance and recyclability. The integration of mono- and bimetallic catalysts supported on IERs has been achieved by ion-exchange of metal salt precursors, enabling efficient and environmentally friendly multistep reactions.
Article
Chemistry, Medicinal
Carmen Ruiz-Fernandez, Ricardo Cuesta, Susana Martin-Lopez, Javier Guijarro, Arturo Lopez Gomez de las Huertas, Mikel Urroz, Laura Miguel-Berenguel, Miguel Gonzalez-Munoz, Elena Ramirez
Summary: Severe acute respiratory syndrome coronavirus 2 caused the global COVID-19 pandemic and led to the development of COVID-19 vaccines. Delayed hypersensitivity reactions (HRs) have been observed, particularly to the excipients PEG2000 and P80. Lymphocyte transformation tests (LTT) with PEG2000 and P80 were conducted on 23 patients with suspected delayed HRs, and positive results were found in some cases. LTT can serve as a useful tool for identifying excipients as causal agents in HRs to COVID-19 vaccines and can aid in risk stratification for patients with HRs.
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)
