Article
Chemistry, Physical
Xin Zhang, Riying Qi, Kuichuan Sheng, Hongjian Lin
Summary: Electrochemical sulfide oxidation is a promising method for removing sulfide from wastewater or biogas. In this study, nickel phosphide was electrodeposited on stainless steel to form an anode catalyst (SS/Ni-P). The SS/Ni-P catalyst showed high efficiency in sulfide removal, achieving a removal efficiency of 95.00 +/- 3.55 % within 48 hours, which was significantly higher than other anodes.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Matthew Li, Jun Lu, Jiayan Shi, Seoung-Bum Son, Dan Luo, Ira Bloom, Zhongwei Chen, Khalil Amine
Summary: Activation of commercial Li2S is a key challenge in commercializing sulfur-based Li-ion battery systems. This study uses commercial Na2S as a polysulfide injector to activate commercial Li2S, allowing for activation at lower voltages and with lower electrolyte content. Compared to pre-solvated redox mediators, this technique offers a simpler and more efficient way to activate commercial Li2S.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Nanoscience & Nanotechnology
Jinyan Huo, Liujun Jin, Chunchao Chen, Dongyun Chen, Zhichuan Xu, Cecilia Devi Wilfred, Qingfeng Xu, Jianmei Lu
Summary: This study demonstrates the production of sulfur using a sulfide oxidation reaction (SOR) technique, and shows that a NiS-doped cobalt sulfide NiS-CoS-supported NiCo alloy foam can serve as a superior electrocatalyst with high stability. It also reveals the sulfurophobicity feature of the catalyst, preventing electrode corrosion during the SOR process. Additionally, the study unveils the chain-growth mechanism of the SOR.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Biochemistry & Molecular Biology
Christopher H. Switzer, Sebastian Guttzeit, Thomas R. Eykyn, Philip Eaton
Summary: The study demonstrates that cysteine trisulfide induces cellular stress response, inhibits cellular metabolism and proliferation, and protects cells from ER stress through the generation of cysteine persulfide.
Article
Multidisciplinary Sciences
Christopher H. Switzer, Shingo Kasamatsu, Hideshi Ihara, Philip Eaton
Summary: Hydrogen sulfide (H2S) is both an antioxidant and cytotoxic by inhibiting mitochondrial respiration. It is detoxified inside mitochondria through slow enzymatic reactions, but alternative detoxification mechanisms are predicted to exist. Superoxide dismutase [Cu-Zn] (SOD1) is shown to efficiently oxidize H2S, limiting its cytotoxicity. SOD1 can convert H2S to sulfate under limited sulfide conditions, but can catalyze the formation of per- and polysulfides when sulfide is in excess, leading to cellular thiol oxidation.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Engineering, Environmental
Annemerel R. Mol, Sebastian D. Pruim, Milan de Korte, Derek J. M. Meuwissen, Renata D. van der Weijden, Johannes B. M. Klok, Karel J. Keesman, Cees J. N. Buisman
Summary: This article reports the effects of a novel sulfidic reactor on sulfur particle size and morphology. The results show that the reactor promotes the removal of the smallest individual sulfur particles and promotes the production of sulfur agglomerates. The experiments and modeling results demonstrate the potential of the sulfidic reactor to improve process operation, sulfur separation, and sulfur recovery.
Article
Engineering, Environmental
Annemerel R. Mol, Lourens J. van Langeveld, Renata D. van der Weijden, Johannes B. M. Klok, Cees J. N. Buisman
Summary: The effect of polysulfide formation on biologically produced elemental sulfur crystals was investigated, showing that polysulfides formed in the AnSuR reactor improved settleability of S8 particles. Anoxic, abiotic experiments revealed that sulfur particles became coarser and more porous, with smaller particles disappearing and agglomerates initially breaking apart but later reforming. Different observed polysulfide formation rates for each S8 sample were found to be related to the initial morphology and size. Increasing HS--S8 ratio and retention time were shown to increase settleability of S8 particles.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Geochemistry & Geophysics
Khoren Avetisyan, Alexey Kamyshny
Summary: This study aims to accurately measure the thermodynamic constants of disulfide formation. The constants for the formation of longer polysulfides were found to be in good agreement when measured using different techniques. The study also demonstrated that the concentration of disulfide can be reliably determined under certain conditions, and the thermodynamic values obtained can be used to calculate the standard Gibbs free energy, standard enthalpy, and molar entropy of disulfide formation.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Article
Chemistry, Inorganic & Nuclear
Heyuan Chen, Wei Wu, Suhao Chen, Zichen Wang, Runzhe Chen, Niancai Cheng
Summary: In this paper, a low-electronegative Fe-substituted cobalt pyrite (FexCo1-x)S-2 OER catalyst with controllable morphology and electronic structure was designed and prepared, and it exhibited excellent catalytic activity owing to the conversion of (FexCo(1-x))S-2 to Fe-CoOOH during the OER process. Experimental and theoretical calculation methods show that the introduction of Fe into CoOOH can modulate the d-band center of the Co site because the low electronegativity of Fe induces charge aggregation at the Co site to optimize the binding energy between Co and oxygen-containing intermediates. This study provides prospective insights into understanding the synergistic effects of bimetals in the (FexCo1-x)S-2 system and offers a new strategy for exploring other efficient catalysts with controllable electronic structures and controllable morphologies.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Heyuan Chen, Wei Wu, Suhao Chen, Zichen Wang, Runzhe Chen, Niancai Cheng
Summary: A low-electronegative metallic cobalt pyrite OER catalyst was designed and prepared in this study, showing excellent catalytic activity. The introduction of Fe can modulate the electronic structure of Co site and optimize the binding energy between Co and oxygen-containing intermediates.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Chao Yue Zhang, Li Gong, Chaoqi Zhang, Xu Cheng, Lluis Balcells, Guifang Zeng, Jordi Jacas Biendicho, Junshan Li, Geng Zhi Sun, Jin Yuan Zhou, Andreu Cabot
Summary: The electrochemical performance of room-temperature sodium-sulfur batteries can be significantly improved by the application of an external magnetic field, which enhances the adsorption capacity and reaction dynamics of sulfur polysulfides.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Biochemistry & Molecular Biology
Honami Echizen, Eita Sasaki, Kenjiro Hanaoka
Summary: Hydrogen sulfide and its oxidation products play important roles in biological processes, with sulfane sulfur compounds attracting increasing interest for their physiological and pathophysiological roles. Traditional cyanolysis can be used to detect sulfane sulfur compounds, while recent studies have developed various chemical techniques for detection, isolation, and bioimaging of these compounds in biological samples.
Article
Chemistry, Physical
Jie Luo, Jianming Zheng
Summary: To improve the performance of lithium-sulfur batteries, it is crucial to effectively mitigate the shuttle effect of polysulfide and accelerate its conversion. Iron sulfide nanosheets have been successfully developed as sulfur host materials, exhibiting superior electrochemical performance due to efficient polysulfide conversion catalyzed by iron sulfide.
Review
Chemistry, Physical
Qingli Zou, Yi-Chun Lu
Summary: Metal-sulfur batteries have the potential for higher energy density and lower cost compared to conventional Li-ion batteries, but face challenges such as the shuttle effect. The design of electrolytes plays a crucial role in influencing the sulfur reactions and cell performance.
Article
Cell Biology
Hao Qi, Haoyu Shi, Minbo Yan, Liangyu Zhao, Yinghao Yin, Xiaolin Tan, Huiyue Qi, Hu Li, Kangqiang Weng, Yuxin Tang, Yingbo Dai
Summary: In this study, it was demonstrated that ammonium tetrathiomolybdate (TM) has antioxidative effects and mitigates cisplatin-induced acute kidney injury (AKI). TM activates the NRF2 pathway by inhibiting NRF2 ubiquitination and promotes the expression of target genes in HK-2 cells. Furthermore, TM selectively activates the NRF2 pathways in the liver and kidney. Therefore, TM may be a promising therapeutic agent for cisplatin-induced AKI.
CELL DEATH DISCOVERY
(2023)
Article
Chemistry, Physical
Marcos A. R. da Silva, Ingrid F. Silva, Qi Xue, Benedict T. W. Lo, Nadezda Tarakina, Barbara N. Nunes, Peter Adler, Sudhir K. Sahoo, Detlef W. Bahnemann, Nieves Lopez-Salas, Aleksandr Savateev, Caue Ribeiro, Thomas D. Kuhne, Markus Antonietti, Ivo F. Teixeira
Summary: This study presents an alternative method for the preparation of highly active Fe single-atom catalysts (SACs) with Fe-N4 sites, which exhibit high selectivity in the oxidation of C-H bonds. The catalyst obtained through ion exchange can effectively oxidize C-H bonds to ketones under light irradiation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Himad Ahmed Alcamand, Henrique dos Santos Oliveira, Jose Gabriel Balena, Luiz Carlos de Oliveira, Pedro L. Gastelois, Manuel Houmard, Eduardo H. M. Nunes
Summary: A green methodology for synthesizing imine has been developed using a gas-phase oxidative coupling reaction in a continuous-flow system. LaMNO3 perovskites were used as heterogeneous catalysts, achieving a catalytic performance of 98% and remained stable for 8 hours. The catalysts were successfully regenerated and reused in five consecutive cycles. This solvent-free process offers advantages in terms of environmental friendliness, simplicity, and safety, while reducing the need for subsequent extraction and purification steps.
CATALYSIS COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Sirlon F. Blaskievicz, Ivo Freitas Teixeira, Lucia Helena Mascaro, Juliana Ferreira de Brito
Summary: In this study, a new photoelectrochemical nitrogen reduction reaction using carbon nitride, poly(heptazine imide) (PHI), and Nb2O5 nanotubes was developed for ammonia synthesis under mild conditions. The presence of PHI in the photocathode not only improved stability compared to bare Nb2O5, but also increased the ammonia generation rate by about 10-fold. The results suggest that this photocathode has the potential to be a promising alternative to the conventional Haber-Bosch process.
Article
Engineering, Environmental
Marcos A. R. da Silva, Guilherme F. S. R. Rocha, Gabriel A. A. Diab, Carla S. Cunha, Vitor G. S. Pastana, Ivo F. Teixeira
Summary: Researchers have developed a simple and straightforward method to synthesize highly dispersed nickel sites stabilized on highly crystalline carbon nitrides. The synthesized catalysts show high yields and activity for the coupling reactions of nitrobenzene under mild conditions, and exhibit high stability and versatility.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Agustin A. Godoy, Dimar Villarroel-Rocha, Jose Joaquin Arroyo-Gomez, Celeste Bernini, Griselda Narda, Karim Sapag
Summary: This study investigated the influence of degassing temperature and urea functionalization on the CO2 adsorption performance of CPO-27-Mg. Four samples with different degrees of urea functionalization were obtained through post-synthesis modification treatments. The influence of degassing temperature on the non-functionalized MOF was also evaluated. The resulting compounds were characterized and the thermally treated and functionalized CPO-27-Mg was evaluated for CO2 capture.
Article
Chemistry, Multidisciplinary
Wanessa Lima de Oliveira, Eduarda Ferreira de Oliveira, Tais dos Santos da Cruz, Walker Vinicius Ferreira do Carmo Batista, Carlos Moraes, Fabiano Vargas Pereira, Moacir Rossi Forim, Gabriel Ali Atta Diab, Ivo Freitas Teixeira, Marcio Cesar Pereira, Joao Paulo de Mesquita
Summary: We present a novel coordination polymer based on iron(III)-cyamelurate. The material was synthesized in aqueous medium and characterized using various techniques such as TGA, FTIR, XRD, HRTEM, and STEM. Due to its high structural stability in aqueous media, the heterogeneous Fenton-like catalytic activity of the complex was evaluated using a model molecule. The results demonstrated significantly enhanced catalytic activity in both acidic and basic conditions, with pseudofirst-order rate constants normalized by iron(III) concentrations approximately 1000 times higher compared to traditional heterogeneous catalysts based on iron(III) oxyhydr-oxides. The observed superior catalytic performance was attributed to the increased binding sites of Fe3+ ions and the enhanced exposure of catalytic sites, resulting in higher atomic efficiency of the reaction.
Article
Chemistry, Physical
Andrea Rogolino, Jose B. G. Filho, Lorena Fritsch, Jose D. Ardisson, Marcos A. R. da Silva, Gabriel Ali Atta Diab, Ingrid Fernandes Silva, Carlos Andree Ferreira Moraes, Moacir Rossi Forim, Matthias Bauer, Thomas D. Kuehne, Markus Antonietti, Ivo F. Teixeira
Summary: In this work, FeCl3 salt in acetonitrile was found to catalyze the oxidation of propane to acetone under aerobic conditions and visible-light irradiation at room temperature. Mechanistic studies showed that this reaction is driven by chlorine radicals generated by Fe-Cl bond photolysis. These findings not only have potential applications in the solar-based oxidation of hydrocarbons, but also provide important insights into the photochemistry of FeCl3.
Article
Environmental Sciences
Mirian Elizabeth Casco, Valentin Moreno, Martin Duarte, Karim Sapag, Andres Cuna
Summary: Although landspreading and incineration are currently used for the disposal of primary sludge and biosludge in Uruguayan pulp mill wastewater treatment plants, direct incineration for energy recovery is the most preferred method. This study proposes hydrothermal carbonization (HTC) as a pre-treatment method to enhance the fuel characteristics of the sludge. The results show that HTC affects the sludge differently in terms of carbon fixation, energy densification, and conversion efficiency.
WASTE AND BIOMASS VALORIZATION
(2023)
Article
Chemistry, Multidisciplinary
Maria Jerigova, Yevheniia Markushyna, Ivo F. Teixeira, Bolortuya Badamdorj, Mark Isaacs, Daniel Cruz, Iver Lauermann, Miguel Angel Munoz-Marquez, Nadezda V. Tarakina, Nieves Lopez-Salas, Oleksandr Savateev, Pablo Jimenez-Calvo
Summary: By pre-organization of precursors and further co-polymerization, tunable semiconductors can be synthesized through anionic doping. These S-doped/C3N4-based materials demonstrate enhanced optical, electronic, structural, textural, and morphological properties, leading to higher performance in organic benzylamine photooxidation, oxygen evolution, and energy storage.
Article
Nanoscience & Nanotechnology
Ingrid F. Silva, Regiane D. F. Rios, Oleksandr Savateev, Ivo F. Teixeira
Summary: In this study, a series of carbon nitride-based nanomaterials were investigated as catalysts for biodiesel synthesis. LiK-PHI showed the best performance with a yield of 94% and catalyst loading of 1.6wt%. The biodiesel produced using LiK-PHI also met the quality requirements established by legislation.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Applied
Leonardo Andres Cano, Deicy Barrera, Jhonny Villarroel-Rocha, Karim Sapag
Summary: Layered double hydroxides were synthesized by co-precipitation of Mg2+ and Al3+ ions at constant pH. Different methods of solution additions and temperatures were tested, resulting in varied crystallinity and interlaminar spacing. The solids obtained at higher temperatures showed better textural properties and exhibited higher efficiency in nitrate removal. This study demonstrates the correlation between synthesis method, textural properties, and the application of removing contaminants.
Review
Chemistry, Multidisciplinary
Guilherme F. S. R. Rocha, Marcos A. R. da Silva, Andrea Rogolino, Gabriel A. A. Diab, Luis F. G. Noleto, Markus Antonietti, Ivo F. Teixeira
Summary: Recently, single-atom catalysis (SAC), the missing link between homogeneous and heterogeneous catalysis, has been discovered. Carbon nitride (CN)-based materials, which can trap metal atoms in nitrogen-rich coordination sites, have emerged as promising supports for preparing SACs. This review covers the recent advances in SACs supported by CN materials, including characterization techniques, synthetic methods, and their photocatalytic applications. The two-way relationship between single-atoms and CN supports, where the single-atoms can modify the electronic properties of the CN support and vice versa, is emphasized.
CHEMICAL SOCIETY REVIEWS
(2023)
Review
Chemistry, Multidisciplinary
Guilherme F. S. R. Rocha, Gabriel A. A. Diab, Pietra F. R. Martins, Ivo F. Teixeira
Summary: The topic of single-atom catalysis has gained attention in recent years due to its unique properties compared to traditional heterogeneous catalysis. The development of single-atom catalysis is limited by the synthesis of metal single-atoms and the availability of characterization techniques. However, the use of carbon nitride-based materials as supports for single-atom catalysis has shown promise in addressing these limitations and enhancing catalytic properties.
REVISTA VIRTUAL DE QUIMICA
(2023)
Review
Multidisciplinary Sciences
Gabriel A. A. Diab, Marcos A. R. da Silva, Guilherme F. S. R. Rocha, Luis F. G. Noleto, Andrea Rogolino, Joao P. de Mesquita, Pablo Jimenez-Calvo, Ivo F. Teixeira
Summary: Green hydrogen is crucial for achieving net zero emissions in the chemical industry. Photocatalysis shows great potential in producing essential commodity chemicals, driven by sunlight and water.
Article
Chemistry, Physical
Ingrid F. Silva, Soumyabrata Roy, Pawan Kumar, Zhi Wen Chen, Ivo F. Teixeira, Astrid Campos-Mata, Loudiana M. Antonio, Luiz O. Ladeira, Humberto O. Stumpf, Chandra Veer Singh, Ana Paula C. Teixeira, Md Golam Kibria, Pulickel M. Ajayan
Summary: This study reports a method of decorating metallic Au nanostructures on nitrogen-defect-carbon nitride for photocatalytic hydrogen evolution reaction (HER). By tuning the morphology and size of gold nanoparticles, the photoefficiency of the nanocomposite photocatalysts can be greatly enhanced. Experimental results show that carbon nitride decorated with approximately 7nm Au nanoparticles exhibits excellent photocatalytic hydrogen production rate, which is attributed to strong localized surface plasmon resonance effect and interfacial charge separation.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Applied
Qingyuan Zheng, Jack H. Williams, Scott Elgersma, Mick D. Mantle, Andrew J. Sederman, G. Leendert Bezemer, Constant M. Guedon, Lynn F. Gladden
Summary: In this study, a pilot-scale fixed-bed reactor compatible with NMR/MRI was developed for Fischer-Tropsch synthesis. Multiple magnetic resonance techniques were applied to quantitatively characterize different product species within catalyst pellets, providing valuable information for catalyst and reactor optimization.
Article
Chemistry, Applied
Lisa Ramisch, Sebastian Pfaff, Sabrina M. Gericke, Edvin Lundgren, Johan Zetterberg
Summary: We present a combination of optical operando techniques that allow simultaneous measurement of adsorbed species on catalyst surfaces, monitoring of surface oxide formation, and imaging of the gas phase above the catalyst surface. The experimental setup was validated by studying CO oxidation on Pd(100) at different pressures, revealing the effects of pressure on the heterogeneous catalytic reaction.
Article
Chemistry, Applied
Marta Paniagua, Gabriel Morales, Juan A. Melero, Daniel Garcia-Salgado
Summary: The influence of common impurities in levulinic acid on the catalytic performance of different acid catalysts for bio-jet fuel production was studied. It was found that furfural had the greatest detrimental effect on catalyst performance, while propyl-sulfonic acid-modified SBA-15 and sulfonic acid resin Amberlyst-70 showed good regeneration ability.
Article
Chemistry, Applied
Jesus Tapiador, Pedro Leo, Guillermo Calleja, Gisela Orcajo
Summary: This study presents a new MOF material, Zn-URJC-13, with acid and basic sites, permanent porosity, and high affinity to CO2 molecules. The Zn-URJC-13 catalyst exhibits efficient performance in CO2 cycloaddition reactions and can be reused multiple times.
Article
Chemistry, Applied
Dan Zhao, Vita A. Kondratenko, Dmitry E. Doronkin, Shanlei Han, Jan-Dierk Grunwaldt, Uwe Rodemerck, David Linke, Evgenii V. Kondratenko
Summary: This study demonstrates the potential of cheap and commercially available Zr or Ti-based supports and ZnO to serve as active and selective catalysts for propane dehydrogenation (PDH). The catalytically active species formed in situ under PDH conditions consist of isolated ZnOx. ZnOx on the surface of LaZrOx shows the highest rate of propene formation.
Article
Chemistry, Applied
Hanbyeol Kim, Jung Rae Kim, Young-Kwon Park, Jeong-Myeong Ha, Jungho Jae
Summary: In this study, metal phosphates were used as catalysts for biomass conversion to produce sustainable aromatics through DielsAlder cycloaddition reactions. The effects of synthesis method, activation method, and P/Ti molar ratio on the structure and acid properties of titanium phosphate catalysts were systematically studied. The mesoporous titanium phosphate catalyst synthesized by hydrothermal method at 180℃ for 12 h followed by ethanol refluxing at 60℃ for 24 h at a molar P/Ti ratio of 1 showed the highest surface area and acid site density.
Article
Chemistry, Applied
Yasin Khani, Sumin Pyo, Kwang-Eun Jeong, Chul-Ung Kim, Moonis Ali Khan, Byong-Hun Jeon, Kun-Yi Andrew Lin, Siyoung Q. Choi, Young-Kwon Park
Summary: A protonated form of Zeolite Socony Mobil-5 (H-ZSM-5) catalyst was synthesized through a hydrothermal method using different sources of silica. The effect of loading the catalyst with yttrium, samarium, and gadolinium on the acidic properties was investigated. Among the metal-loaded catalysts, the Sm/LHZ catalyst showed the best performance in the methanol to propylene conversion due to its high amount of weak and intermediate acid sites, while the Gd-LHZ catalyst increased the selectivity towards ethane and propane.
Article
Chemistry, Applied
Michael Franc, Ivana Cisarova, Jan Vesely
Summary: The present study investigates an enantioselective cyclization of enals with imidazolone derivatives catalyzed by a combination of achiral Pd(0) complex and chiral secondary amine. Corresponding spirocyclic imidazolones were produced in high yields with moderate diastereoselectivity and excellent enantioselectivity. The developed co-operative catalytic methodology provides a highly substituted spirocyclic scaffold with four stereogenic centers under mild conditions.
Article
Chemistry, Applied
Mauro Alvarez, Jennifer Cueto, David P. Serrano, Pablo Marin, Salvador Ordonez
Summary: This study focuses on improving the formulation and preparation methods of catalysts for the production of dimethyl carbonate. By using suitable catalyst preparation methods and copper salt precursors, the researchers successfully produced catalysts with optimal performance for dimethyl carbonate formation.
Article
Chemistry, Applied
Claudia J. Keijzer, Luc C. J. Smulders, Dennie Wezendonk, Jan Willem de Rijk, Petra E. de Jongh
Summary: This study investigates the catalytic behavior of alpha-alumina supported silver catalysts in the presence of chloride. It is found that the particle size of silver can affect the selectivity of the catalyst, but different strategies lead to different results. In this size range, the selectivity of ethylene oxide is correlated to the Ag : Al2O3 surface ratio.
Article
Chemistry, Applied
Takeshi Aihara, Wataru Aoki, Michikazu Hara, Keigo Kamata
Summary: The development of acid-base bifunctional catalysts is important for promoting specific chemical transformations. In this study, Ti-based perovskite oxides were synthesized and used as catalysts for two C-C bond-forming reactions (cyanosilylation and Knoevenagel condensation). The highly pure SrTiO3 nanoparticles with a high specific surface area exhibited the highest catalytic performance, and could be easily recovered and reused.
Article
Chemistry, Applied
Olga Gorlova, Petra Pribylova, Eliska Vyskocilova, Katerina Peroutkova, Jan Kohout, Iva Paterova
Summary: This study investigates the Baeyer-Villiger oxidation of beta-cyclocitral using tin-modified mixed oxides as catalysts. The optimal reaction conditions and the effects of various factors on the reaction course and selectivity were determined. The results show that tin-modified mixed oxides exhibit high activity and selectivity in the oxidation reaction.
Article
Chemistry, Applied
M. I. Avila, M. M. Alonso-Doncel, L. Briones, G. Gomez-Pozuelo, J. M. Escola, D. P. Serrano, A. Peral, J. A. Botas
Summary: The catalytic fast pyrolysis of lignin using ion-exchanged zeolite catalysts showed significant improvements in bio-oil quality and the production of aromatic hydrocarbons and oxygenated compounds.
Article
Chemistry, Applied
Enrico Catizzone, Giorgia Ferrarelli, Paolo Bruno, Girolamo Giordano, Massimo Migliori
Summary: The acid-catalysed alcohol conversion reaction is a promising route for de-fossilization strategies. Research on pure alcohol conversion and simultaneous dehydration of mixed alcohols have shown different product compositions, with the type and distribution of acid sites affecting the reaction mechanism.
Article
Chemistry, Applied
Alireza Ranjbari, Juho Kim, Jihee Yu, Jiyun Kim, Mireu Park, Nayoung Kim, Kristof Demeestere, Philippe M. Heynderickx
Summary: This study investigated a novel kinetic model for the adsorption and photocatalytic degradation of methyl orange using commercial ZnO and reduced ZnO photocatalysts. The results provided new insights into the interaction of catalysts with molecules of different charges and compared with a previous study on methylene blue. The presence of oxygen vacancies in ZnO and their effects on adsorption and photocatalytic degradation were analyzed, and the photocatalytic degradation rate of reduced ZnO was found to increase significantly.
