Article
Engineering, Environmental
Sarah A. Saslow, Tatiana G. Levitskaia, Elsa A. Cordova, Nancy M. Avalos, Daria Boglaienko, Yilin Fang, Xuehang Song, Amanda Lawter, Hilary Emerson, Jim Szecsody, Christian D. Johnson, Carolyn I. Pearce, Vicky L. Freedman, Rob D. Mackley
Summary: Ion exchange resins are widely used in pump-and-treat facilities for groundwater remediation. This study investigated the impact of competing anions on the performance of two types of ion exchange resins used at the Hanford Site. The results showed that the uptake of pertechnetate was not affected by other anions, indicating the high selectivity of the resin for the target contaminant.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Mariana Figueira, Monica Reig, Marc Fernandez de Labastida, Jose Luis Cortina, Cesar Valderrama
Summary: This study aims to evaluate the recovery of boron from seawater desalination plant brines using ion exchange resins. The results show that the DIAION CRB03 resin has higher sorption capacity and recovery rate, and is selected as the best option. Economic analysis shows that revenue can be obtained from the recovery of boric acid from the brine.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Chemistry, Physical
William Q. Rios, Bruno Antunes, Alirio E. Rodrigues, Ines Portugal, Carlos M. Silva
Summary: Analytical equations for effectiveness factors of reversible reactions are developed and numerically validated in this study. These equations are expressed in terms of irreversible nth order Thiele modulus, thermodynamic equilibrium constant, ratios of effective diffusivities, and ratios of surface concentrations. The application of these equations is demonstrated for two liquid phase reactions catalyzed by Amberlyst-15.
Article
Biochemistry & Molecular Biology
Kowit Suwannahong, Chadrudee Sirilamduan, Anat Deepatana, Torpong Kreetachat, Surachai Wongcharee
Summary: In this study, a novel polymeric chelating resin, Dowex-M4195, was used as an alternative for investigating the behavior of copper (II) in acidic solution through an ion exchange method. The optimized conditions yielded a copper (II) removal capacity of approximately 31.33 mg/g at a low pH. The findings suggest that H+ Dowex-M4195 can be applied as a precursor for the reuse and regeneration of copper (II) in electronic waste industries and other wastewater applications.
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, Environmental
Supriya C. Karekar, Keerthi Srinivas, Birgitte K. Ahring
Summary: Acetic acid is a valuable chemical with high demand, and cost-effective separation technologies are needed for bio-production of acetic acid. Ion exchange resins can efficiently extract acetate from fermentation broths. This study investigated the kinetics of acetate adsorption by six different ion exchange resins and found the most suitable adsorption model.
CHEMICAL ENGINEERING JOURNAL ADVANCES
(2022)
Article
Food Science & Technology
Fereshteh Nemati, Mohammad-Taghi Golmakani, Mehrdad Niakousari, Fatemeh Ghiasi
Summary: The study successfully synthesized ethyl butyrate using solvent-free ohmic-assisted esterification (OAE) and found that this method outperformed microwave- and magnetic stirrer-assisted esterification in terms of yield, energy consumption, and CO2 emission.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Environmental Sciences
Dai Quyet Truong, Paripurnanda Loganathan, Le Minh Tran, Duc Loi Vu, Tien Vinh Nguyen, Saravanamuthu Vigneswaran, Gayathri Naidu
Summary: Ammonium removal from drinking water using Purolite C100E resin showed best results at pH 3-8, with maximum ion exchange capacities fitting Langmuir and Freundlich models. Co-ions in water slightly reduced ammonium removal efficiency, with ammonium having higher affinity due to lower hydrated ionic radius and H-bonding. The Purolite C100E resin displayed effective ammonium removal capabilities in fluidized bed and household filter systems.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Physical
Jeffrey C. Gee, Karen W. Fulbright
Summary: Relative initial reaction rates for both double bond isomerization and direct esterification with heptanoic acid were determined for a series of linear 1-alkenes. The rates for both reactions decreased as the carbon chain length increased. Each 1-alkene showed two different adsorption coefficients on the catalyst, indicating the presence of two types of active sites on the Amberlyst (R) 15 catalyst.
APPLIED CATALYSIS A-GENERAL
(2023)
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
Engineering, Chemical
Yu-Chi Wu, Yu-Hong Wei, Ho-Shing Wu
Summary: The study investigated the mechanism of ectoine adsorption using Dowex(R) HCR-S ion-exchange resin, finding that it involves ion-exchange reaction and physisorption. Experimental results showed that the Langmuir and Freundlich models fit the adsorption process well, while the pseudo-second-order and intraparticle diffusion models are suitable for describing the adsorption kinetics.
Article
Energy & Fuels
Ehsan Mustafa Hashmi, Yousuf Jamal, Nida Maqbool, Hafiz Muhammad Aamir Shahzad, Beenish Imtiaz, Sher Jamal Khan
Summary: This study investigated the feasibility of using wastewater as a source of lipids for biodiesel production and characterized the processed water. FFAs were recovered from wastewater and converted into esters through adsorption and esterification reactions. Distillation increased the ester content in the reaction mixture. The results showed that lipids from wastewater can be converted into biodiesel, providing a solution for water conservation.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2022)
Review
Energy & Fuels
Godfred Appiah, Samuel Kofi Tulashie, Ephraim Edem Amoah Akpari, Eldon R. Rene, Daniel Dodoo
Summary: Biolubricants are gaining attention due to their exceptional properties, but face challenges in terms of cold-flow and thermo-oxidative stability. Chemical modification pathways such as esterification and transesterification have been explored to enhance the performance of biolubricants, increasing yield and quality.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
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
Chemistry, Physical
Wei-Sheng Chen, Yu-An Chen, Cheng-Han Lee, Yen-Jung Chen
Summary: This study aims to recycle vanadium resources and recover membranes from waste proton-exchange membranes. The research is divided into two parts: adsorbing vanadium from the membrane with ion exchange and obtaining V2O5 through elution, precipitation, and calcination. The recycled membrane is prepared by recasting. The results show successful elimination of vanadium from the recycled membrane, although the microstructure is affected.
Review
Chemistry, Physical
Valentin Smeets, Eric M. Gaigneaux, Damien P. Debecker
Summary: Epoxidation reactions are crucial for modern chemistry, with Ti-based titanosilicate catalysts playing a central role in driving more versatile, high-performing, and greener processes. Challenges include improving catalyst performance through better control of active surface species and optimizing particle size, shape, and surface chemistry. Future research directions aim to broaden the application scope of new catalytic materials and enhance catalyst performance.
Article
Chemistry, Physical
Vijaykumar S. Marakatti, Maria Ronda-Lloret, Marian Krajci, Boby Joseph, Carlo Marini, Juan Jose Delgado, Francois Devred, N. Raveendran Shiju, Eric M. Gaigneaux
Summary: Intermetallic compounds (IMCs) are used as precursors to synthesize highly active and stable metal/metal oxide composite catalysts. Controlled modification leads to the formation of Co and Sm2O3 nano crystallites, enhancing catalytic activity. The presence of Co and Sm2O3 active sites in close proximity promotes the simultaneous adsorption or activation of reactants, improving catalytic performance.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Sorin Avramescu, Cristian D. Ene, Madalina Ciobanu, Josefine Schnee, Francois Devred, Cristina Bucur, Eugeniu Vasile, Luke Colaciello, Ryan Richards, Eric M. Gaigneaux, Marian Nicolae Verziu
Summary: In this study, the catalytic activity of TiO2, 2%Re-TiO2, and 10%Re-TiO2 in converting carbohydrates to levulinic acid under autoclave conditions was evaluated. The 10%Re-TiO2 catalyst showed a high levulinic acid yield and maintained stable catalytic activity after multiple cycles of use.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Isabelle Ly, Elodie Layan, Emmanuel Picheau, Nicolas Chanut, Frederic Nallet, Ahmed Bentaleb, Marie-Anne Dourges, Roland J. Pellenq, Elizabeth A. Hillard, Thierry Toupance, Francois Dole, Frederic Louerat, Renal Backov
Summary: A series of Nb2O5-SiO2 monolithic catalysts with multiscale porosity were designed using a sol-gel process and the physical chemistry of complex fluids. These catalysts showed efficient and selective solvent-free heterogeneous catalysis, with easy handling and recyclability.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
K. Pascaud, M. Merce, A. Roucher, M. Destribats, R. Backov, V Schmitt, R. Sescousse, F. Brouillet, S. Sarda, M. Re
Summary: This study developed biomimetic low temperature apatite ceramics with tunable porosity using biocompatible high internal phase Pickering emulsions. Two types of porous bioceramics were produced by low temperature processes, demonstrating bioactivity and bioresorption in-vivo. These bioceramics could be used as drug delivery disposals for filling bone defects in surgical applications.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Juan Diaz, Luis R. Pizzio, Gina Pecchi, Cristian H. Campos, Laura Azocar, Rodrigo Briones, Romina Romero, Adolfo Henriquez, Eric M. Gaigneaux, David Contreras
Summary: A series of tetrabutyl ammonium salts of V-included Keggin-type polyoxoanions were prepared and characterized. The catalytic activity was found to be related to the number of V atoms present. Catalysts with higher V substitution degree exhibited higher activity.
Article
Nanoscience & Nanotechnology
Isabelle Ly, Antoine Vardon, Nicolas Chanut, Frederic Nallet, Roland J-M Pellenq, Mathieu Rouzieres, Rodolphe Clerac, Joudia Akil, Florence Epron, Catherine Especel, Renal Backov
Summary: By using integrative chemistry, high-porosity CoOx-SiO2 self-standing monoliths have been successfully prepared, showing that cobalt concentration significantly influences the organization and stability of mesoscopic voids, with increasing cobalt concentration favoring the formation of crystalline nanoparticles embedded within silica.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Gabriel Hidalgo, Michel Devillers, Eric M. Gaigneaux
Summary: This study thoroughly investigates two novel hybrid materials and explores the impact of bipyridine isomers on their formation and physicochemical properties. The study reveals that the bipyridine isomers cause distortion of the hybrids' skeleton units, leading to a decrease in their reduction potentials and enhanced performance in ammonia temperature-programmed desorption and the epoxidation of cyclooctene.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Antoine Vardon, Hugo Labarrere, Frederic Nallet, Nicolas Chanut, Francois Weill, Christine Labrugere-Sarroste, Jean-Louis Bobet, Isabelle Ly, Florence Epron, Catherine Especel, Renal Backov
Summary: Copper-oxide-based self-standing porous catalysts show high efficiency in the thermoconversion of CO under dry air conditions, and their efficiency further increases after reduction treatment, demonstrating robustness.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Physical
Sebastian Gamez, Ernesto de la Torre, Eric M. Gaigneaux
Summary: Microporous oxidized activated carbon and macroporous oxidized carbon black were evaluated for the complexation of Ru in the oxidative cleavage of oleic acid. The results showed that macroporous oxidized carbon black had higher activity and stability compared to microporous oxidized activated carbon.
MOLECULAR CATALYSIS
(2022)
Article
Engineering, Chemical
Sebastian Gamez, Ernesto de la Torre, Eric M. Gaigneaux
Summary: Valorization of palm oil to produce azelaic acid, an important component for skin cancer treatment, was achieved through oxidative cleavage of unsaturated fatty acids using Ru-carbon catalysts. Triglycerides from palm oil were converted to fatty acid methyl esters, which were then reacted in a catalytic system consisting of H2O/MeCN/AcOEt with NaIO4 and N-methylmorpholine N-oxide. The Ru-carbon catalysts displayed >99% conversion and achieved a yield of around 85% for azelaic acid in 5 hours at room temperature. Furthermore, these catalysts showed good recyclability for five cycles, making them a promising option for the production of high-value-added products from cheap feedstocks like palm oil.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Inorganic & Nuclear
Gabriel Hidalgo, Gabriella Barozzino-Consiglio, Koen Robeyns, Michel Devillers, Eric M. Gaigneaux
Summary: When the precatalyst (2,2'-Hbpy)(3)[PW12O40] reacts with H2O2 under catalytic conditions, it forms two oxidized species, an inactive byproduct (2,2'-bpyHO)(3)[PW12O40] and an activator [WO-(O-2)(2)(2,2'-bpy)]. The activator then activates H2O2 to form the active species for catalyzing the epoxidation reaction. H2O2 also serves as a conservative agent, essential for preventing irreversible deactivation of the catalyst.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Elodie Layan, Juhi Gupta, Isabelle Ly, Frederic Nallet, Ahmed Bentaleb, Eric Laurichesse, Renaud Vallee, Jean-Luc Blin, Benedicte Lebeu, Frederic Louerat, Mickael Le Bechec, Peter Moonen, Thierry Toupance, Thierry Pigot, Renal Backov
Summary: Three-dimensional photoactive self-standing porous materials have been synthesized through the integration of soft chemistry and colloids. These materials show promising applications in air purification and offer advantages in terms of volume and handling compared to powders. Additionally, the volumetric counterintuitive acting mode for light-induced reactions opens the door for further advanced applications in various fields.
Article
Chemistry, Physical
Sebastian Gamez, Alixandre Magerat, Ernesto de la Torre, Eric M. Gaigneaux
Summary: Macroporous oxidized carbon black (CBO) was functionalized with 4,4'-diamino-2,2'-bipyridine (NH2-bpy) and polydopamine (PDA) to form Ru complexes for the catalytic valorization of oleic acid. The reaction produced azelaic and pelargonic acids, which are highly demanded in pharmacology. Among the three catalysts tested, the PDA-based catalyst showed the most promising results, achieving complete conversion of oleic acid with yields of pelargonic and azelaic acids around 95%. The PDA catalyst remained active even after five runs due to the re-adsorption of Ru species by catechol groups of PDA.
MOLECULAR CATALYSIS
(2023)
Article
Chemistry, Multidisciplinary
Chiraz Gannoun, Abdelhamid Ghorbel, Eric M. Gaigneaux
Summary: This paper investigates the impact of the direct incorporation of ZrO2 in TiO2 and TiO2-CeO2 aerogel supports on the physico-chemical and catalytic properties of supported vanadia catalysts. The results show that Zr-doped V2O5 based catalysts exhibit improved catalytic performance in the total oxidation of chlorobenzene.
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)
