Article
Chemistry, Physical
Minchen Du, Yanyan Gong, Chao Bu, Jia Hu, Yongxing Zhang, Cheng Chen, Somboon Chaemchuen, Ye Yuan, Francis Verpoort
Summary: A catalytic system using AgNO3/ionic liquid was developed for the simultaneous synthesis of oxazolidinones and α-hydroxyl ketones with excellent catalytic activity and recyclability. Mechanistic investigations revealed the derivative active species of N-heterocyclic carbene silver complexes and CO2 adducts, which were beneficial for the catalytic activity in the reaction.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Applied
Jiacheng Li, Suan Siang Tan, Sara Helen Kyne, Philip Wai Hong Chan
Summary: A synthetic method for the Hantzsch ester-mediated C2-alkylation of quinolines, isoquinolines, and pyridines using N-(acyloxy)phthalimide esters (NHPI) under blue LED light has been described. The metal-free protocol provides alkylated N-heterocyclic products with high yields and can be carried out at room temperature. The introduction of a chiral phosphoric acid enables an asymmetric version of the reaction with high enantiomeric excess values. The reaction mechanism involves the excitation of an electron-donor acceptor complex and the addition of a radical species to the N-heterocycle.
ADVANCED SYNTHESIS & CATALYSIS
(2022)
Article
Chemistry, Physical
Xin-Shen Liang, Rui-Dong Li, Wei Sun, Zhong Liu, Xiao-Chen Wang
Summary: Borane-mediated hydride abstraction has been shown to be a powerful tool for the C(sp(3))-H functionalization of amines, but its activity with ethers is still unknown. In this study, we discovered this activity in 2H-chromenes and established a catalytic C(sp(3))-H functionalization reaction using silyl ketene acetals as nucleophiles.
Article
Chemistry, Multidisciplinary
Felipe Ospina, Kai H. Schuelke, Jordi Soler, Alina Klein, Benjamin Prosenc, Marc Garcia-Borras, Stephan C. Hammer
Summary: This study reports a new method for regioselective N-methylation of unsaturated heterocycles. By using two methyltransferases and simple reagents, important molecules with biological activities can be synthesized efficiently.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Jingchang Zhang, Yanlian Niu, Fandong Kong, Maocai Yan
Summary: We report a seminal triple catalysis strategy assisted by catalytic ionic liquid. DFT calculations reveal the detailed effect of the ionic liquid in the C(sp(3))-H functionalizations mediated by this triple catalysis and establish a very different mechanism compared to previous dual catalysis research. Using this mechanism, direct coupling between acyl chlorides and very strong or polar C(sp(3))-H bonds has been achieved with high yields, along with unexpected methylation of acyl chlorides using tetramethylsilane as the methyl source. This research develops a one pot methylation strategy. It is the first report of using an ionic liquid for the functionalization of very strong C(sp(3))-H bonds and the first report of using tetramethylsilane as a methyl source.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Organic
Johanna Templ, Edma Gjata, Filippa Getzner, Michael Schnuerch
Summary: In this study, we used phenyl trimethylammonium iodide as a reagent to achieve highly selective methylation of amides and indoles. The method is easy to use, provides high yields, has good functional group tolerance, and is particularly suitable for late-stage methylation of bioactive compounds.
Article
Chemistry, Multidisciplinary
Melania Gomez-Martinez, Maria del Carmen Perez-Aguilar, Dariusz G. Piekarski, Constantin G. Daniliuc, Olga Garcia Mancheno
Summary: An enantioselective anion-binding organocatalytic approach using versatile N,N-dialkylhydrazones as polarity-reversed nucleophiles is presented. A highly ordered hydrogen-bond network was envisioned between a CF3-substituted triazole-based multidentate HB-donor catalyst, the ionic substrate, and the hydrazone in a supramolecular chiral ion-pair complex. Experimental and computational studies supported the formation of this network, showing the crucial role of the anion as a template unit. The asymmetric reaction provided highly enantiomerically enriched hydrazones that could be further derivatized to value-added compounds with up to three stereocenters.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Review
Chemistry, Physical
Shrddhaba J. Chudasama, Bhavya J. Shah, Khushi M. Patel, Tejas M. Dhameliya
Summary: Ionic liquids (ILs), with their environmentally friendly and sustainable attributes, have been widely utilized in organic transformations. They possess characteristics such as recyclability, low vapor pressure, and low volatility. This article focuses on the application of ILs in the synthesis of nitrogen and oxygen containing heterocycles, demonstrating their effectiveness as catalysts or solvents in specific reactions.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Green & Sustainable Science & Technology
Amir Sada Khan, Taleb H. Ibrahim, Mustafa I. Khamis, Paul Nancarrow, Jibran Iqbal, Inas AlNashef, Nabil Abdel Jabbar, Muhammad Faheem Hassan, Farouq Sabri Mjalli
Summary: The study modified powder activated carbon with ionic liquid and sodium alginate, resulting in AC-Alg-IL beads with high adsorption capacity for phenol. Theoretical models showed that pseudo-second-order kinetic and Freundlich isotherm models were suitable for describing the adsorption process. The interaction between phenol and AC-Alg-IL beads was analyzed using the COSMO-RS model, concluding that AC-Alg-IL beads can efficiently adsorb phenol and other organic compounds.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Organic
Chunlian Wang, Hang Shi, Guo-Jun Deng, Huawen Huang
Summary: In this study, a visible-light-induced photoredox Minisci alkylation reaction of N-heteroarenes with ethyl acetate was successfully achieved. The low-toxic ethyl acetate was employed as the alkylation reagent for the first time, leading to smooth reactions of 4-quinazolinones, quinolines, and pyridines. Mechanistic studies revealed that LiBr significantly enhanced the efficiency of the reaction through mediating hydrogen atom transfer.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2021)
Article
Chemistry, Physical
Prithwish Ghosh, Na Yeon Kwon, Youjung Byun, Neeraj Kumar Mishra, Jung Su Park, In Su Kim
Summary: In this study, a cobalt(II)-catalyzed method for C-H alkylation and acylation of N-heterocycles using 1,4-dihydropyridines (DHPs) as alkylating and acylating agents was reported. The combination of KBrO3 and a Co(II) catalyst successfully generated alkyl and acyl radicals from DHPs. This method was applicable to various heterocycles and demonstrated selectivity in modifying drug candidates and synthesizing bioactive molecules on a gram scale.
Article
Chemistry, Physical
Ni Xiong, Yang Li, Rong Zeng
Summary: We present a dual catalytic strategy for the functionalization of aliphatic carboxylic acids using photoinduced iron/copper catalysts. The photoinduced ligand-to-iron charge transfer process generates an unstabilized alkyl radical, which is then utilized by the copper catalyst for coupling reactions to form C-N or C-C bonds. This system enables efficient conversion of a wide range of aliphatic carboxylic acids and has potential applications in drug discovery.
Article
Chemistry, Physical
Ni Xiong, Yang Li, Rong Zeng
Summary: We have developed a photoinduced iron/copper dual-catalytic strategy for the radical decarboxylation functionalization of aliphatic carboxylic acids. By merging iron-catalyzed decarboxylation with copper catalysis, this system allows efficient conversion of a wide range of aliphatic carboxylic acids for various reactions. The strategy has applications in compound library synthesis and the discovery of pharmaceutical agents.
Review
Chemistry, Multidisciplinary
Ria Ayu Pramudita, Ken Motokura
Summary: This article presents the current development of utilizing hydrosilanes in the chemical reduction of CO2, with a focus on organic catalysts. The use of heterogeneous organocatalysts with precisely designed active sites is emphasized for their recyclability and higher efficiency in these transformations.
Article
Green & Sustainable Science & Technology
Jinwei Zhang, Xiaopeng Li, Zheng Zhu, Tao Chang, Xiying Fu, Yongjing Hao, Xiaocai Meng, Balaji Panchal, Shenjun Qin
Summary: The study introduces a series of hydroxylamino-tethered polymeric ionic liquids with adjustable alkyl length substitutes, which efficiently and stably convert CO2 into cyclic carbonates without the need for metals and solvents.
ADVANCED SUSTAINABLE SYSTEMS
(2021)
Article
Environmental Sciences
Regiane C. Ferreira, Diogo Dias, Isabel Fonseca, Maria Bernardo, Joao Lourenco Castagnari Willimann Pimenta, Nuno Lapa, Maria A. S. D. de Barros
Summary: Bovine bone char (BC) was used for highly efficient simultaneous removal of paracetamol and Cu(2+) ions from aqueous solutions. The presence of paracetamol enhanced the affinity of Cu(2+) in the binary system, leading to a higher removal rate of Cu2+.
ENVIRONMENTAL TECHNOLOGY
(2022)
Article
Chemistry, Applied
J. E. Castanheiro, J. Vital, I. M. Fonseca, A. M. Ramos
Summary: The acetalization of glycerol with hexanal was studied using sulfonic acid-functionalized mesoporous silica, showing optimal activity when the amount of sulfonic acid groups was moderate. Activity increased with the number of sulfonic acid groups until reaching a maximum, after which a decrease was observed. The catalytic stability of the [SO3H](3)-SBA-15 catalyst was evaluated through consecutive batch runs, demonstrating good stability.
Article
Engineering, Environmental
A. Dias, N. Bundaleska, E. Felizardo, D. Tsyganov, A. Almeida, A. M. Ferraria, A. M. Botelho do Rego, M. Abrashev, Th Strunskus, N. M. Santhosh, U. Cvelbar, J. Zavasnik, M. F. Montemor, M. M. Almeida, Patricia A. Carvalho, J. Kissovski, L. L. Alves, E. Tatarova
Summary: This paper proposes a novel approach using microwave plasma to synthesize high-yield and high-quality hybrid graphene-based nanostructures. The method can produce customizable electrode materials with well-structured metal-based nanostructures on graphene nanosheets.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
D. Dias, M. Bernardo, F. Pinto, I. Fonseca, N. Lapa
Summary: The study found that the GC obtained from the co-gasification of rice husk and polyethylene showed better performance in continuous flow Cr(III) removal assays compared to the commercial activated carbon (CAC), although in batch conditions, the results were the opposite. Both adsorbents removed Cr(III) through precipitation, with CAC showing slightly higher removal due to its higher porosity. Regeneration studies revealed that neither GC nor CAC could be used in more than one cycle.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Chemical
Andreia S. L. Gouveia, Vitor Oliveira, Ana M. Ferraria, Ana M. B. Do Rego, Maria Joao Ferreira, Liliana C. Tome, Amelia Almeida, Isabel M. Marrucho
Summary: The study successfully created microchannels on the surface of PIL-IL materials using femtosecond laser ablation, leading to the improvement of CO2 separation performance of the membranes.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Materials Science, Paper & Wood
Mehdi Hatami, Nima Rahnama, Hassan Karimi-Maleh, Nader Djafarzadeh, Mohammad Qandalee, Reza Setva, Fatemeh Karimi, Carlos J. Duran-Valle, Ignacio M. Lopez-Coca, Alireza Sharifi
Summary: A new generation of ternary nanocomposites based on poly(ethylene terephthalate) (PET), phosphorylated chitosan, and surface-modified alumina nanoparticles was fabricated in four steps. The phosphorylation process aimed to insert phosphorus moieties as a flame retardant agent in the final PET nanocomposite. Environmentally friendly nano-alumina was used to improve the thermal properties of PET in collaboration with organically anchored phosphorus moieties. Additionally, bio-safe modified alumina nanoparticles in combination with phosphorylated chitosan simultaneously improved the antibacterial activity and thermal properties of the PET matrix.
Article
Biochemistry & Molecular Biology
Ana Sofia Figueiredo, Ana Maria Ferraria, Ana Maria Botelho do Rego, Silvia Monteiro, Ricardo Santos, Miguel Minhalma, Maria Guadalupe Sanchez-Loredo, Rosa Lina Tovar-Tovar, Maria Norberta de Pinho
Summary: The antibacterial properties of cellulose acetate/silver nanoparticles (AgNP) ultrafiltration membranes were studied and the results showed that the distinct features of each side of the membranes, the active and porous layers surfaces, played a role in the antibacterial activity. The composition and structure of the membranes affected the accessibility of the silver to Escherichia coli (E. coli), leading to different levels of growth inhibition. The findings suggest that the membrane design and silver distribution can be optimized to enhance the antibacterial performance.
Article
Chemistry, Physical
Inmaculada Roman, Rosario Pardo-Botello, Carlos J. Duran-Valle, Pedro Cintas, R. Fernando Martinez
Summary: A sustainable carbon-based catalyst is reported that efficiently promotes the protection and deprotection of 1,2-diols under heterogeneous conditions. The catalyst exhibits high performance for acetalization and can be recycled, showing no impurities caused by leaching.
Article
Biochemistry & Molecular Biology
Marta Adame-Pereira, Carlos J. Duran-Valle, Carmen Fernandez-Gonzalez
Summary: A new adsorbent material was prepared by coating activated carbon with hydrothermal carbon derived from sucrose. The material exhibited different properties from the combination of the activated carbon and hydrothermal carbon, indicating the formation of a new material. It had a high specific surface area (1051.9 m(2) g(-1)) and slightly higher acidity than the starting activated carbon (p.z.c.-point of zero charge 8.71 vs. 9.09). The adsorption properties of a commercial carbon (Norit RX-3 Extra) were enhanced across a wide pH and temperature range. The monolayer capacity values according to Langmuir's model reached 588 mg g(-1) for the commercial product and 769 mg g(-1) for the new adsorbent.
Article
Biochemistry & Molecular Biology
Rita F. Nunes, Daniel Costa, Ana M. Ferraria, Ana Botelho M. do Rego, Filipa Ribeiro, Angela Martins, Auguste Fernandes
Summary: Due to the need to reduce global CO2 emissions, bio-based fuels are being explored. To reduce oxygen content, bio-oils need to be upgraded through catalytic hydrodeoxygenation (HDO) using bifunctional catalysts with metal and acid sites. Pt-Al2O3 and Ni-Al2O3 catalysts containing heteropolyacids (HPA) were prepared, and their properties were characterized. Ni-based catalysts showed higher conversion and selectivity to deoxygenated compounds, making them the most promising, despite suffering from deactivation over time.
Article
Polymer Science
Mehdi Hatami, Zohreh Seifi Najaf Abadi, Alireza Yousefi, Mohammad Qandalee, Nader Djafarzadeh, Yaser Ghasemi, Ignacio M. Lopez-Coca, Carlos J. Duran-Valle
Summary: This study focused on the fabrication and characterization of polybenzoxazine/polydopamine/ceria nanocomposites. A new benzoxazine monomer (MBZ) was synthesized using the Mannich reaction with ultrasonic assistance. Polydopamine (PDA) was used as a dispersing polymer and surface modifier for CeO2. The nanocomposites (NCs) were prepared using an in-situ route under thermal conditions. The results confirmed the successful preparation of MBZ and showed the distribution of CeO2 nanoparticles in the polymer matrix.
Article
Pharmacology & Pharmacy
Teresa Cordeiro, Ines Matos, Florence Danede, Joao C. Sotomayor, Isabel M. M. Fonseca, Marta C. C. Corvo, Madalena Dionisio, Maria Teresa Viciosa, Frederic Affouard, Natalia T. Correia
Summary: A rational design of drug delivery systems requires in-depth knowledge of the physical state and molecular mobility of the drug itself, as well as its distribution among carriers and interactions with the host matrix. This study investigates the behavior of simvastatin loaded in mesoporous silica MCM-41 matrix, showing that it exists in an amorphous state and interacts strongly with the MCM silanol groups. Molecular Dynamics simulations predict that simvastatin molecules anchor to the inner pore wall through multiple hydrogen bonds. MCM-41 loading proves to be a suitable strategy for the long-term stabilization of simvastatin in the amorphous form.
Article
Biochemistry & Molecular Biology
Nenad Bundaleski, Carolina F. Adame, Eduardo Alves, Nuno P. Barradas, Maria F. Cerqueira, Jonas Deuermeier, Yorick Delaup, Ana M. Ferraria, Isabel M. M. Ferreira, Holger Neupert, Marcel Himmerlich, Ana Maria M. B. do Rego, Martino Rimoldi, Orlando M. N. D. Teodoro, Mikhail Vasilevskiy, Pedro Costa Pinto
Summary: There has been growing interest in using amorphous carbon thin films with low secondary electron yield (SEY) to reduce electron multipacting in particle accelerators and RF devices. Previous studies have shown that the SEY increases with the amount of hydrogen and is correlated with the Tauc gap. In this study, films produced by magnetron sputtering with varying amounts of hydrogen and deuterium were analyzed, and it was found that the maximal SEY decreases with the fraction of the graphitic phase in the films.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Silvia Izquierdo, Nazaret Pacheco, Carlos J. Duran-Valle, Ignacio M. Lopez-Coca
Summary: This study successfully transformed chestnut cupule waste into hydrothermal carbon, which was used as an adsorbent for water decontamination.
C-JOURNAL OF CARBON RESEARCH
(2023)
Article
Biochemistry & Molecular Biology
Diogo A. Sousa, Luis F. Ferreira, Alexander A. Fedorov, Ana M. B. do Rego, Ana M. Ferraria, Adriana B. Cruz, Mario N. Berberan-Santos, Jose Prata
Summary: Carbon nanomaterials with significant luminescence were successfully synthesized from waste biomass generated in the industrial olive oil production. These carbon nanomaterials exhibit high fluorescence quantum yields and low cytotoxicity, making them promising for applications in biological imaging and biosensing.
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.
