Article
Chemistry, Applied
Ziman Cai, Xiangzhe Zeng, Yumeng Zhang, Yan Liu, Guo Tang, Yufen Zhao
Summary: In this study, a KBr-mediated synthesis of DAPIs using P-4, alcohols, and water was developed. The use of silica gel catalyst and safe oxidant oxone enabled the preparation of important DAPIs with yields of 70-90%. Additionally, rare metal extractant D2EHPA was obtained in a yield of 73%. The reaction showed complete conversion of white phosphorus and the method was easily adaptable to large-scale preparation.
ADVANCED SYNTHESIS & CATALYSIS
(2022)
Article
Chemistry, Multidisciplinary
Jiaojiao Wei, Wei Zheng, Ping Huang, Zhongliang Gong, Yan Liu, Shan Lu, Zhuo Li, Xueyuan Chen
Summary: A unique photoinduced method for the controlled synthesis of CsPbX3 perovskite nanocrystals and nanocomposites has been successfully developed, enabling the creation of multifunctional perovskite nanocomposites. This approach may open up new opportunities for perovskite-based material or device engineering.
Article
Materials Science, Composites
Hui Feng, Shuo Wang, Yanjun Cui, Yongsheng Xiang, Xiaofei Liu, Xiaoliang Sun, Wenli Zhang, Peng Tu
Summary: In this study, the molding of SiO2/PEI composite slurry using direct-ink writing 3D printing technology was successfully achieved. The structure and thermal characteristics of the composites were analyzed using various methods. The study also investigated the impact of ink formula, extrusion flow, and printing parameters on the mechanical properties of the monolithic structures. The results provide insights into the relationship between direct-ink writing 3D printing technology and the mechanical properties of SiO2/PEI composites.
POLYMER COMPOSITES
(2023)
Article
Construction & Building Technology
Yi Fang, Jialai Wang, Haibin Ma, Liang Wang, Xin Qian, Pizhong Qiao
Summary: Functionalizing colloidal nano-silica with tannic acid can significantly enhance the performance and durability of silica fume blended mortars, improving their mechanical properties and reducing porosity. Experimental results demonstrate that TA functionalization increases workability, decreases porosity, and enhances compressive strength of the mortars.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Sabine Bognar, Manuel van Gemmeren
Summary: A synthetically simple general one-step protocol was developed for the selective synthesis of a broad range of unsymmetrical dithioacetals consisting of one aromatic and one aliphatic thiol moiety. The mixed S,S-acetals were obtained in high yields, demonstrating excellent selectivity.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Green & Sustainable Science & Technology
Xin Qian, Jialai Wang, Liang Wang, Yi Fang, Peiyuan Chen, Mengxiao Li
Summary: This study proposes using tannic acid as a clean dispersant for colloidal nano-silica in concretes to improve their performance. The tannic acid forms a coating on the silica nanoparticle, preventing aggregation and delaying the chemical reaction in the concrete, resulting in improved compressive strength and denser microstructure of the cement paste.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Multidisciplinary
A. V. Vorotyntsev, A. N. Markov, A. A. Kapinos, A. N. Petukhov, A. A. Atlaskin, A. A. Golovacheva, I. V. Vilkov, P. A. Yunin, V. M. Vorotyntsev, I. V. Vorotyntsev
Summary: The method of induction flow levitation was used for the first time to synthesize porous sorbents based on silicon dioxide, enabling the direct synthesis of various types of silica in a continuous mode with high productivity. The developed method allowed for the evaporation of atoms from the silicon sample and the synthesis of catalytic systems based on ionic liquids with high catalytic activity. This research provides a promising method for the production of catalyst supports with high surface areas and functionalization possibilities.
MATERIALS TODAY CHEMISTRY
(2022)
Review
Chemistry, Multidisciplinary
Dichao Shi, Svetlana Heyte, Mickael Capron, Sebastien Paul
Summary: This review paper discusses strategies to improve the yield of dimethyl carbonate (DMC) synthesis, focusing on catalysts for CO2 and methanol activation, as well as the use of dehydrating agents for in situ water trapping during the reaction.
Article
Construction & Building Technology
Mudasir Nazeer, Kanish Kapoor, S. P. Singh
Summary: This study investigates the strength, durability, and microstructural properties of Pervious Concrete (PC) made with Fly Ash (FA) and Silica Fume (SF) substitution. Nine different mixes of pervious concrete were cast to evaluate the study's objective. The influence of FA and SF on various properties of pervious concrete, such as workability, porosity, compressive strength, and acid resistance, were assessed. The study also utilized Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Spectroscopy (EDX) for microstructural analysis. The results showed that substituting 10% of FA and SF significantly improved the strength and durability properties of PC, with a notable increase in compressive strength at different curing ages. The microstructural analysis revealed densified micrographs with even-layered C-S-H and C-A-S-H gel formation, contributing to the improved mechanical and durability characteristics of pervious concrete.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Chemistry, Physical
Malayil Gopalan Sibi, Deepak Verma, Handi Cayadi Setiyadi, Muhammad Kashif Khan, Neha Karanwal, Sang Kyu Kwak, Kyung Yoon Chung, Jae-Ho Park, Daseul Han, Kyung-Wan Nam, Jaehoon Kim
Summary: A Ni-Zn intermetallic/Zn-rich NixZnyO catalyst has been discovered to effectively convert CO2 to acetic acid and propionic acid, demonstrating high selectivity and stability for the conversion of CO2 into value-added chemicals.
Article
Chemistry, Multidisciplinary
Sabina Siles-Quesada, Christopher M. A. Parlett, Alexander C. Lamb, Jinesh C. Manayil, Yang Liu, Jim Mensah, Hamidreza Arandiyan, Karen Wilson, Adam F. Lee
Summary: Researchers successfully synthesized an ordered macroporous KIT-6 material with 370nm macropores, a face-centered cubic Ia3d structure, and 5nm mesopore channels. After functionalization, this material allows rapid diffusion and esterification of fatty acids. Compared with traditional mesoporous PrSO3H/KIT-6, the esterification rate of fatty acids increased by 5 times, and it also showed a 33% enhancement compared with ordered macroporous PrSO3H/SBA-15.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Applied
Farideh Godarzbod, Zohreh Mirjafary, Hamid Saeidian, Morteza Rouhani
Summary: A new nanocatalyst Fe3O4@SiO2@IDA-Cu was prepared by the sol-gel method for the synthesis of 1,4-disubstituted-1,2,3-triazole derivatives. The catalyst exhibited spherical morphology, excellent yields, and environmentally friendly synthesis, and could be easily recovered and reused multiple times without significant loss of activity.
APPLIED ORGANOMETALLIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Shichao Han, Wei Rao, Junyi Hu, Xiaomin Tang, Ye Ma, Jinpeng Du, Zhongqi Liu, Qinming Wu, Yanhang Ma, Xiangju Meng, Wenpo Shan, Feng-Shou Xiao, Hong He
Summary: In this study, a high silica SSZ-16 zeolite with a Si/Al ratio of 6.7 was directly synthesized using an economical diquaternary alkylammonium cation as an OSDA. After exchanged with Cu ion, the Cu-SSZ-16 catalyst exhibited extraordinary performance in NH3-SCR reaction, even after hydrothermal aging at 900 degrees C. The high silica SSZ-16 zeolite with excellent performance and high hydrothermal stability might serve as a promising alternative for NH3-SCR catalyst in diesel vehicles and non-road mobile machinery in the future.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Applied
Mateus Freitas Paiva, Gabriel Ali Atta Diab, Estelle Silva Diorato Teixeira de Mendonca, Silvia Claudia Loureiro Dias, Jose Alves Dias
Summary: Magnetic nanoparticles based on magnetite (MNP) coated with silica (MNP@SiO2) have various research applications, especially as catalyst supports. In this study, magnetite was coated with tetraethylorthosilicate (TEOS) and used as a support for phosphotungstic acid (HPW). The synthesized catalysts showed good dispersion and integrity of HPW, maintaining the structural and magnetic characteristics of MNP@SiO2. The catalysts exhibited high activity, selectivity, and stability in the esterification reaction of oleic acid with ethanol.
Article
Chemistry, Multidisciplinary
Yu-Yu Aung, Aswandi Wibrianto, Jefry S. Sianturi, Desita K. Ulfa, Satya C. W. Sakti, Irzaman Irzaman, Brian Yuliarto, Jia-yaw Chang, Yaung Kwee, Mochamad Z. Fahmi
Summary: The study investigated the potential of carbon nanodots (CDs) synthesized from hyaluronic acid using microwave-assisted and furnace-assisted methods as bioimaging agents for cancer cells. Various CDs were produced with different optical and structural properties, but all showed low toxicity and good biocompatibility, making them suitable for bioimaging applications.
Article
Chemistry, Applied
D. Garcia-Perez, M. C. Alvarez-Galvan, M. C. Capel-Sanchez, G. Blanco-Brieva, S. Morales-delaRosa, J. M. Campos-Martin, J. L. G. Fierro
Summary: The study investigated the influence of bimetallic characteristics on catalytic activity and selectivity, finding that MoP/SiO2 exhibited the highest conversion rate for methyl laurate, MoCoP/SiO2 showed the highest hydrocarbon formation yield, and CoP/SiO2 had the highest C11 selectivity.
Article
Chemistry, Physical
Raul Losantos, Manuel Montiel, Radu Mustata, Fernando Zorrilla, Luis Valino
Summary: This paper proposes a novel approach to parameterize high temperature exchange membrane fuel cells (HTPEMFC) by combining computational simulation tools and genetic algorithms. The method effectively identifies electrochemical parameters of three-dimensional fuel cell models and decouples the fluid dynamic resolution from the electrochemistry one. The results demonstrate that a unique set of electrochemical parameters can be identified from a set of measured operating conditions that fits the 3D model to the target polarisation curve.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Green & Sustainable Science & Technology
Marta Lara-Serrano, Silvia Morales-delaRosa, Jose M. Campos-Martin, Victor K. Abdelkader-Fernandez, Luis Cunha-Silva, Salete S. Balula
Summary: The direct conversion of glucose to HMF was studied using MOF as catalysts and POM as a co-catalyst. Two routes were investigated and it was found that the reactions with MIL-53(Al) and MIL-101(Cr) catalysts produced the highest yield of HMF. Stability tests on the POM@MOF catalysts showed that MIL-53(Al) and Hsiw@ MIL-101(Cr) can be reused but with a progressive loss in HMF yield.
ADVANCED SUSTAINABLE SYSTEMS
(2022)
Article
Energy & Fuels
D. Garcia-Perez, G. Blanco-Brieva, M. C. Alvarez-Galvan, J. M. Campos-Martin
Summary: Catalysts based on zirconia and alumina-supported tungsten oxides were studied for the hydroisomerization of n-dodecane. The catalysts showed different catalytic properties and the 15 wt% W loaded catalysts exhibited the best performance with a conversion rate of 67% and a selectivity of 87% for i-C-12.
Article
Chemistry, Physical
Gema Blanco-Brieva, Frederique Desmedt, Pierre Miquel, Jose M. Campos-Martin, Jose L. G. Fierro
Summary: The direct synthesis of hydrogen peroxide using a palladium catalytic system on silica was studied without the use of acid and halide promoters. Several bromide substituents were utilized in the catalyst synthesis. Characterization of the catalysts revealed the presence of only palladium (II) species, with the Pd/Br ratio affecting hydrogen peroxide yield and selectivity.
Article
Chemistry, Physical
D. Garcia-Perez, A. Lopez-Garcia, P. Renones, M. C. Alvarez-Galvan, J. M. Campos-Martin
Summary: The influence of different nickel loadings on alumina-supported tungsten oxide catalysts was studied for the hydroisomerization of n-dodecane. The physicochemical properties of the catalysts were characterized using various techniques, showing that medium acid sites were responsible for the reaction performance. XRD and XPS results confirmed that high nickel loading led to bulky crystal structures, resulting in the highest cracking activity. The conversion of n-dodecane and selectivity to branched C-12 increased with increasing Ni loading until 6 wt% Ni, after which the selectivity decreased due to metal-based cracking reactions.
MOLECULAR CATALYSIS
(2022)
Article
Nanoscience & Nanotechnology
Consuelo Alvarez-Galvan, Pablo G. Lustemberg, Freddy E. Oropeza, Belen Bachiller-Baeza, Martin Dapena Ospina, Maria Herranz, Jesus Cebollada, Laura Collado, Jose M. Campos-Martin, Victor A. De La Pena-O'Shea, Jose A. Alonso, M. Veronica Ganduglia-Pirovano
Summary: The design of an active and economically viable catalyst for CO2 conversion is crucial in the fight against global warming and energy demand. We have developed efficient catalysts for reverse water-gas shift reaction, and shown that Ni/La-doped CeO2 catalysts have unprecedented catalytic performance. The correlation between physicochemical properties and catalytic activity has provided insights for optimizing the catalyst.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Maryame Tghos Naim, Marta Lara-Serrano, Alberto F. Romero, Silvia Morales-delaRosa, Jose M. Campos-Martin, Juan Ramon Aviles Moreno, Pilar Ocon
Summary: This study proposes a method for synthesizing lignosulfonates from various biomass sources and evaluates the effectiveness of the synthesis method. By comparing with commercial lignosulfonates, it is found that lignosulfonate derivatives are a good and low-cost choice to improve the lifetime of Pb/acid batteries.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Cristina Peinado, Jose M. Campos-Martin, Sergio Rojas
Summary: This paper investigates a trilobe-shaped phosphotungstic acid-based catalyst synthesized by impregnation for the dehydration of ethanol. The catalyst has shown excellent activity, achieving equilibrium ethanol conversion under different reaction conditions. By optimizing the conditions, the selectivity towards ethylene was maximized, and the catalyst has demonstrated good activity for bio-ethylene production.
REACTION CHEMISTRY & ENGINEERING
(2023)
Article
Electrochemistry
Alejandro Clemente, Manuel Montiel, Felix Barreras, Antonio Lozano, Ramon Costa-Castello
Summary: This study presents a vanadium redox flow battery model that considers the most important variables in the system. The model is divided into electrochemical, thermal, hydraulic, and voltage submodels. Analytic analysis is used to reduce the system order, and a calibration of the model parameters is conducted using real experimental data. The model is validated by comparing real measured voltage with estimated voltage. Results from short and long-term operation are presented for state of charge and state of health estimation validation.
ELECTROCHIMICA ACTA
(2023)
Correction
Engineering, Chemical
Vanessa Solsona, Silvia Morales-de la Rosa, Oreste De Luca, Harrie Jansma, Bart van der Linden, Petra Rudolf, Jose M. Campos-Martin, Maria Emma Borges, Ignacio Melian-Cabrera
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Marta Lara-Serrano, Daniela M. Sboiu, Silvia Morales-delaRosa, Jose M. Campos-Martin
Summary: This study investigated the dissolution of lignocellulosic biomass in an inorganic salt hydrate (ZnCl2·4H(2)O) and the subsequent precipitation with water for compound separation. Optimal conditions were determined to be 24 h and 70 degrees C. XRD, SEM, NMR, and FTIR spectroscopy were used to analyze and identify the obtained solids. Solid I consisted of undissolved lignin and unreacted cellulose, Solid II was cellulose-rich with a low portion of hemicellulose and lignin, and Solid III was mainly pure lignin. Hemicellulose was mainly dissolved and hydrolyzed during the dissolution treatment, and the amount present in all solids was minimal. Tests on Solid I and Solid II in a hydrolysis reaction showed improved conversion and yield of sugars. Solid II produced a large amount of total reducing sugars with a selectivity of 78-88%, depending on the starting biomass.
APPLIED SCIENCES-BASEL
(2023)
Article
Electrochemistry
Raul Losantos, Manuel Montiel, Radu Mustata, Fernando Zorrilla, Luis Valino
Summary: This paper proposes a methodology for characterizing electrochemical parameters in non-isothermal three-dimensional (3D) simulation models of fuel cell stacks. The methodology utilizes easily measurable data and combines iterative methods and genetic algorithm optimization techniques to achieve reasonable computational cost. The effectiveness of the methodology is demonstrated through its application on a real scale fuel cell stack, with good agreement between the model and experimental data.
ELECTROCHIMICA ACTA
(2023)
