Article
Green & Sustainable Science & Technology
Prem Kumar Seelam, Harisankar Sreenivasan, Satu Ojala, Satu Pitkaaho, Tiina Laitinen, He Niu, Riitta L. Keiski, Mirja Illikainen
Summary: Geopolymers with Si-Al structure similar to zeolites have potential as environmentally friendly catalyst supports, especially when modified with HCl to increase their specific surface area. The leaching of Na and Al from the geopolymer structure results in a significant increase in specific surface areas, allowing for efficient catalytic applications.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Physical
Weidong Zhang, Claude Descorme, Jose Luis Valverde, Anne Giroir-Fendler
Summary: Co3O4 catalysts were prepared via carbonate precipitation and subsequent calcination. Different catalysts were characterized and tested in the total oxidation of toluene or propane. The performance of Co3O4 catalysts was found to be closely related to their low-temperature reducibility. The best catalyst, Co-350D, showed high oxidation rates for toluene and propane, as well as excellent cycling stability and long-term durability.
Article
Environmental Sciences
Chia-Hung Chen, Yen-Ping Peng
Summary: In this study, Cu2O/TNAs photocatalyst with enhanced photocatalytic performance was successfully synthesized. The photocurrent test showed improved performance under LED irradiation. The Cu2O/TNAs composite system demonstrated efficient removal of VOCs with a proposed mechanism involving the synergy of photo-generated holes and hydroxyl radicals.
Article
Engineering, Environmental
Shahid Saqlain, Shufang Zhao, Soong Yeon Kim, Young Dok Kim
Summary: The study showed that pre-treating activated carbon with HNO3 can enhance toluene removal efficiency under light exposure. Shorter wavelengths of visible light were more effective in toluene removal compared to longer wavelengths. Activated carbon can sustain its photocatalytic activity when mixed with cement, indicating its potential applications in airpurifying building materials.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Qianlin Huang, Puzhen Zhao, Weiwei Wang, Lu Lv, Weiming Zhang, Bingcai Pan
Summary: This study successfully synthesized Co-Fe-doped nanostructured 5-MnO2 catalysts, which exhibited high catalytic activity and robust durability. The co-doping of Co and Fe ions promoted the generation of oxygen vacancies and weakened the strength of the Mn-O bond, increasing the adsorbed oxygen and improving the mobility of lattice oxygen. The obtained catalyst also had a high surface area and three-dimensional mesoporous structure, facilitating diffusion and increasing the number of active sites.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Gabriela Jajko, Juan Jose Gutierrez Sevillano, Sofia Calero, Waclaw Makowski, Pawel Kozyra
Summary: This study investigated the adsorption of toluene in UiO-66 materials. Toluene is a volatile, aromatic organic molecule that is recognized as the main component of VOCs. The UiO-66 material was found to successfully capture toluene through adjustments to the force field parameters and analysis of occupation profiles and radial distribution functions. These findings provide an understanding of the mechanism of toluene adsorption on UiO-66.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Emanuel F. S. Sampaio, V Guimaraes, O. S. G. P. Soares, M. Fernando R. Pereira, Carmen S. D. Rodrigues, Luis M. Madeira
Summary: A novel approach using activated carbon-based catalysts was developed for the treatment of volatile organic compounds from gaseous streams. The chemical surface properties of the catalysts were found to play a crucial role in the degradation of toluene.
Article
Chemistry, Physical
Weili Dai, Moliang Zou, Chuang Zhao, Jie Zhang, Lvgan Wang, Xinshan Wang, Lixia Yang, Lei Zhou, Jianping Zou, Xubiao Luo, Shenglian Luo, Guohua Jing
Summary: In this study, Na-doped Co3O4 was used as a photothermal catalyst to achieve complete mineralization of toluene by utilizing the oxygen vacancies (OVs). Doping sodium into Co3O4 created distortion and charge disequilibrium in the lattice, resulting in abundant OVs. These OVs acted as specific centers to convert absorbed O-2 molecules into active oxygen species, leading to the efficient decomposition of toluene. The Na-doped Co3O4 exhibited significantly higher CO2 yield and mineralization degree compared to pure Co3O4 under full-spectrum light irradiation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Zhiwei Wang, Shaohua Xie, Ying Feng, Peijie Ma, Kun Zheng, Erhong Duan, Yuxi Liu, Hongxing Dai, Jiguang Deng
Summary: Fe2O3 supported single atom Pt catalysts were synthesized via a novel impregnation-pyrolysis method, showing good light-thermal conversion efficiency and high toluene oxidation performance under simulated sunlight irradiation. The role of Vis-IR light in the photothermal catalytic oxidation of toluene was highlighted, and a possible reaction pathway was proposed based on experiments.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Juliette Laine, Yann Foucaud, Adrian Bonilla-Petriciolet, Michael Badawi
Summary: Volatile Organic Compounds (VOCs) pose a threat to human beings and the environment, and their removal through adsorption is a widely studied technique. Kaolinite, a common and inexpensive clay, has shown potential for the removal of VOCs. This study used first-principles modelling techniques to investigate the interaction between kaolinite surfaces and VOCs, as well as atmospheric molecules. The results suggest that kaolinite could selectively remove phenol and toluene from the air.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Junxian Gao, Lingling Tang, Zhizhang Shen, Yuming Dong, Zhenyu Wang, Jinze Lyu, Ji Li, Hanqing Yu
Summary: Combining LaFeO3 and PdOx can enhance the catalytic ozonation of toluene by simultaneously converting the energy from ultraviolet, visible, and infrared light. Additionally, PdOx loading significantly promotes the separation efficiency of photogenerated charge carriers and expands the valid spectrum of photoelectric effect from ultraviolet to visible regions.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Environmental Sciences
Chengda He, Meng Zhuo, Jianhua Hou
Summary: This study investigated the purification of toluene waste gas using liquid-phase absorption and anoxic denitrification. The results showed that the denitrifying reactor had higher removal efficiency and capacity compared to the traditional bioreactor, indicating its potential in improving toluene waste gas treatment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Multidisciplinary Sciences
Aref Aasi, Sadegh Mehdi Aghaei, Sahar Ebrahimi Bajgani, Balaji Panchapakesan
Summary: Recent studies have shown that Pd-decorated phosphorene exhibits strong adsorption and charge transfer capabilities towards acetone, making it a suitable sensor for acetone detection with fast recovery time at 350K temperature and under UV light. Theoretical investigations help to better understand its potential application as a gas sensor.
ADVANCED THEORY AND SIMULATIONS
(2021)
Review
Chemistry, Applied
Anna Rokicinska, Marek Drozdek, Elzbieta Bogdan, Adam Wegrzynowics, Piotr Michorczyk, Piotr Kustrowski
Summary: A facile method using 3D printing to fabricate ceramic monoliths for Co3O4-based catalysts of total oxidation of volatile organic compounds was developed. The monoliths, coated with a MFI zeolite layer, showed excellent catalytic activity in toluene combustion due to highly dispersed Co3O4 spinel particles. The stability tests confirmed the longevity and consistent performance of the monolith catalysts in prolonged reactions.
Article
Engineering, Chemical
Huan Wu, Liqing Chen, Can Tang, Xueyi Fan, Qi Liu, Yinghua Xu
Summary: In this study, silver nanoparticles (Ag NPs) were modified on an Ag electrode using the electrochemical redox method, and their electrochemical hydrodechlorination (EHDC) performance for dichloromethane (DCM) was investigated. The Ag NPs exhibited higher EHDC catalytic activity compared to bulk Ag, and changed the dechlorination mechanism of DCM. The alkalinity of the solvent had a significant impact on the EHDC efficiency, and DCM at concentrations of 10-150 mM could be efficiently converted to methane.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Environmental Sciences
Pavel Topka, Kvetuse Jiratova, Michaela Dvorakova, Jana Balabanova, Martin Kostejn, Frantisek Kovanda
Summary: This study aimed to develop a novel method for preparing structured Co-Mn mixed oxide catalysts by depositing the active phase on stainless steel meshes through hydrothermal synthesis. The catalysts exhibited significantly higher catalytic activity in ethanol oxidation compared to commercial pelleted Co-Mn-Al catalysts, with the activity correlating with the proportion of surface oxygen vacancies determined by XPS. The exceptional activity of the catalyst with a Co:Mn ratio of 0.5 was attributed to the high number of oxygen vacancies and exceptional redox properties.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Energy & Fuels
Kamila Vavrova, Tomas Kralik, Lukas Janota, Olga Solcova, Milan Carsky, Karel Soukup, Miroslav Vitek
Summary: The treatment and disposal of sewage sludge is a critical problem in wastewater treatment plants, and the European Union produces a significant amount of dry matter of sewage sludge annually. Due to the harmful substances in sewage sludge, regulations on sludge management in EU countries will be tightened. One possible solution is the production of biofuel from sewage sludge enriched with waste celluloses, which has been proven to have comparable quality to conventional fossil fuels. Economic analysis shows that solar dryer technology provides the lowest levelised cost of energy, making the alternative biofuel competitive with lignite.
Article
Green & Sustainable Science & Technology
Lenka Wimmerova, Zdenek Keken, Olga Solcova, Kamila Vavrova
Summary: In recent years, the cultivation of microalgal biomass has gained importance due to its wide range of applications, including alternative food production, energy generation, and wastewater treatment. Different cultivation methods have varying environmental and economic impacts, with phototrophic cascades and photobioreactors showing lower environmental impacts compared to heterotrophic fermenters. The main impacts observed include climate change, fossil fuel depletion, human toxicity, and freshwater and marine ecotoxicity. Implementing cycling practices such as water recycling and reprocessing of sewage sludge can further reduce the environmental impacts of microalgae cultivation systems.
Article
Chemistry, Physical
Kveta Kupkova, Pavel Topka, Jana Balabanova, Martin Kostejn, Kvetuse Jiratova, Jean-Marc Giraudon, Jean-Francois Lamonier, Jaroslav Maixner, Frantisek Kovanda
Summary: The effect of Co-Cu oxide catalysts composition on their physicochemical properties and performance in the deep oxidation of ethanol was investigated. The catalysts were characterized and it was found that CuO promoted the reduction of Co3O4. The Co-Cu oxide catalyst with a Co:Cu molar ratio of 4:1 exhibited the best performance in ethanol gas-phase oxidation due to the synergistic effect between Co and Cu components and the presence of finely dispersed CuO particles on the surface of Co3O4.
Article
Chemistry, Physical
Kveta Jiratova, Martin Cada, Iryna Naiko, Alina Ostapenko, Jana Balabanova, Martin Kostejn, Jaroslav Maixner, Timur Babii, Pavel Topka, Karel Soukup, Zdenek Hubicka, Frantisek Kovanda
Summary: Hollow cathode plasma sputtering is a beneficial method for preparing catalysts in the form of thin oxide films on supports, which is especially suitable for catalytic total oxidation of volatile organic compounds (VOCs), offering an economically feasible and environmentally friendly approach to VOC abatement.
Review
Engineering, Chemical
Frantisek Kastanek, Marketa Spacilova, Pavel Krystynik, Martina Dlaskova, Olga Solcova
Summary: This study focuses on the Fenton reaction, which has been extensively studied but still offers opportunities for further investigation as a method of advanced oxidation. The choice of concentrations and ratios of hydrogen peroxide and catalysts, as well as the homogeneous and heterogeneous arrangements, is currently determined experimentally and requires optimization. The study highlights the importance of the Fenton reaction in environmental issues and recognizes it as the foundation for all advanced oxidation processes. It aims to summarize the current knowledge, identify advantages, and address existing problems, while also proposing necessary steps for further research in this area.
Article
Biochemistry & Molecular Biology
Karel Soukup, Pavel Topka, Jaroslav Kupcik, Olga Solcova
Summary: This paper reports the preparation of a thermally stable polybenzimidazole electrospun membrane as a support for a platinum catalyst used in the total oxidation of volatile organic compounds. Compared with commercial pelletized catalysts, the membrane with high porosity provides easy accessibility to the platinum active sites and exhibits a low pressure drop. Catalysts with desired platinum particle sizes were obtained by tuning the preparation conditions. The catalyst containing only 0.08 wt.% of platinum achieved high conversion of all model volatile organic compounds at moderate temperatures, which is important for cost reduction of emission abatement technology.
Article
Green & Sustainable Science & Technology
Sanna Paivarinta-Antikainen, Satu Ojala, Satu Pitkaaho, Lenka Matejova, Riitta L. Keiski
Summary: This paper explores the use of red mud as a catalyst for the removal of dimethyl disulfide and methyl mercaptan. The effects of calcination and activation with hydrochloric acid or a mixture of hydrochloric and orthophosphoric acid are compared. The activated red mud exhibits high catalytic activity, with hydrochloric acid activation being the most effective. However, the oxidation of the sulfur compounds is not complete, resulting in the formation of carbon monoxide.
Article
Environmental Sciences
Marketa Spacilova, Pavel Dytrych, Martin Lexa, Lenka Wimmerova, Pavel Masin, Robert Kvacek, Olga Solcova
Summary: This study focuses on developing a technology for removing microplastics from wastewater using a sorption process. It can be used in wastewater treatment plants as well as other water sources. Cheap natural materials like zeolites and bentonites were tested as potential sorbents. The study also explores modifying the sorbents to improve efficiency and lifespan. Microplastic removal was successful in both lab-scale and semi-operational sorption units, with an efficiency of over 90%.
Article
Chemistry, Physical
Kveta Jiratova, Petr Soukal, Anna Kapran, Timur Babii, Jana Balabanova, Martin Kostejn, Martin Cada, Jaroslav Maixner, Pavel Topka, Zdenek Hubicka, Frantisek Kovanda
Summary: A novel method was studied to prepare Ni-Cu oxide catalysts by deposition on stainless steel meshes using hollow cathode plasma jet sputtering. This method allows the preparation of thin oxide films, making the whole volume of the active phase readily accessible for reactants in catalytic reactions. The activity of the sputtered catalyst was significantly higher in ethanol and toluene oxidation compared to the granular catalyst. This outstanding performance was attributed to the synergistic effect between copper and nickel components.
Article
Chemistry, Multidisciplinary
Lenka Matejova, Ivana Troppova, Satu Pitkaaho, Katerina Pacultova, Dagmar Fridrichova, Ondrej Kania, Riitta Keiski
Summary: The catalytic performance of TiO2, CeO2, and CuO-based open-cell foam supported catalysts in the oxidation of methanol and dichloromethane was investigated. The TiO2-CuO@VUKOPOR((R))A foam showed the best catalytic activity and CO2 yield in methanol oxidation, while the TiO2-CeO2-CuO@VUKOPOR((R))A foam was the best in dichloromethane oxidation. These results suggest the potential use of these catalysts in industrial applications for the removal of volatile organic compounds.
Article
Chemistry, Multidisciplinary
Adam Verner, Jonas Tokarsky, Tomas Najser, Lenka Matejova, Katerina Mamulova Kutlakova, Jan Kielar, Vaclav Peer
Summary: This study focuses on competitive adsorption experiments and force field-based molecular modeling of interactions. It was found that activated carbon had the highest adsorption capacity for NO and SO2 at 20 degrees C, while clay had the highest adsorption capacity at 110 degrees C. The modeling results showed that carboxyl and hydroxyl functional groups had a positive influence on adsorption. The novelty of this study lies in the modeling strategy that allows simulation of surfaces with controlled pore sizes and shapes.
Article
Chemistry, Physical
Lenka Matejova, Ivana Troppova, Zuzana Jankovska, Hana Sezimova, Jan Endres, Pavlina Peikertova, Monica Marcela Gomez Leon
Summary: The ecotoxicological effects of manufactured TiO2, cerium doped TiO2, and zirconium doped TiO2 were evaluated. TiO2 prepared using titanyl sulphate as a precursor showed toxicity to plant species, while TiO2 prepared using titanium (IV) isopropoxide was non-toxic. Cerium doped TiO2 with a low amount of cerium (<5.5 wt.%) was non-toxic and zirconium doped TiO2 stimulated plant growth. The presence of SO42- was identified as the chemical cause of TiO2 toxicity, and high cerium content in TiO2 led to the formation of toxic CeO2 nuclei.
SURFACES AND INTERFACES
(2023)
Article
Geochemistry & Geophysics
Marta Valaskova, Veronika Blahuskova, Miroslava Filip Edelmannova, Lenka Matejova, Karel Soukup, Eva Plevova
Summary: This study focuses on the development of ceramic bricks using fly ash and kaolins or vermiculites as raw materials. The addition of potassium in the mixtures positively affects the firing temperature, porosity, and compressive strength of the bricks. The crystallization of mullite and forsterite in the bricks is influenced by the presence of certain minerals. The ceramic bricks also show potential for photocatalytic hydrogen production.
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)
