Article
Environmental Sciences
Lalliansanga, Diwakar Tiwari, Seung Mok Lee, Dong-Jin Kim
Summary: This study successfully synthesized a novel Ce3+/TiO(2) thin film using the in-situ template process, and investigated its application in degrading the dye Alizarin Yellow under UV-A radiation. The results showed efficient mineralization of the pollutant and potential for catalyst reuse. Further research on real matrix treatment simulated the practical treatment process.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Polymer Science
Ilyas Chouaybi, Hasna Ouassif, Oumaima Matbout, Mohammed Bettach, El Mostafa Moujahid
Summary: CaAl-Layered double hydroxide (LDH) with nitrate anions was synthesized and utilized as an adsorbent for the removal of alizarin yellow R (AYR) dye from aqueous solutions. The effects of various parameters on the adsorption capacity were investigated, and it was found that pH 9, a contact time of 30 minutes, and equilibrium adsorption data fitted well with the Langmuir model. The CaAl-NO3 material exhibited exceptional adsorption capacity of 2107 mg/g at 293 K.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2023)
Article
Engineering, Environmental
Rodrigo Pereira Cavalcante, Dirce Martins de Oliveira, Lucas de Melo da Silva, Jaime Gimenez, Santiago Esplugas, Silvio Cesar de Oliveira, Renato Falcao Dantas, Carme Sans, Amilcar Machulek Junior
Summary: This study investigates the effectiveness of photocatalysis using TiO2 as a catalyst for the removal of ametryn, showing significant advantages over photolysis, generating over 30 intermediates and determining degradation pathways through the use of different scavengers.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Analytical
Negar TaheriAshtiani, Bita Ayati
Summary: In this study, the capability of glutaraldehyde cross-linked magnetic chitosan nanoparticles as a heterogeneous electro-Fenton catalyst was investigated. The results showed that the catalyst efficiently degraded the dye and removed COD and TOC. Furthermore, the catalyst exhibited good reusability and negligible iron leaching, meeting the Iranian wastewater discharge standard.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Anastassiya A. Mashentseva, Nurgulim A. Aimanova, Nursanat Parmanbek, Bakhtiyar S. Temirgaziyev, Murat Barsbay, Maxim Zdorovets
Summary: This study investigates the potential of biogenic zinc oxide nanoparticles in the removal of alizarin yellow R through photocatalytic degradation and adsorption. The research finds that UV-assisted degradation is the most effective and the adsorption process is influenced by parameters such as pH, sorbent amount, and contact time.
Article
Multidisciplinary Sciences
Roaa Mogharbel, Lotfi Ben Tahar, Hichem Huili, Bilel Grindi
Summary: Cu-substituted NiZn ferrite nanoparticles were synthesized and investigated for their efficiency in removing ARS dye through adsorption. The effects of Cu2+ substitution for Zn2+ on various properties were studied. The nanoparticles exhibited a cubic spinel structure, ultrasmall size, and superparamagnetic behavior. The highest removal capacity was observed for the ferrite member with x = 0.15. Adsorption-desorption studies showed good reusability after multiple cycles. The adsorption data were best fitted with the pseudo-second-order model, and the maximum adsorption capacity was high according to the Freundlich model.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Chemical
Yongfeng Liu, Yi Liu, Chunnuan Ji, Ying Zhang, Ying Wang, Rongjun Qu, Yuzhong Niu
Summary: Attapulgite and C3N4 hybridized MOFs were synthesized using different methods, and their adsorption properties for alizarin yellow GG were systematically studied. The refluxing method resulted in higher adsorption capacity and the synthesized nanocomposites showed excellent stability and reusability.
Review
Green & Sustainable Science & Technology
Bing Han, Clayton Butterly, Wei Zhang, Ji-zheng He, Deli Chen
Summary: This review summarizes the recent development of adsorbent materials for the removal of NH3/NH4+, compares the advantages and disadvantages of representative adsorbent materials, and discusses the nature of their adsorption processes. The future perspective on the utilization of inexpensive lignite is also highlighted.
JOURNAL OF CLEANER PRODUCTION
(2021)
Review
Chemistry, Physical
Soliu Oladejo Ganiyu, Carlos A. Martinez-Huitle, Mehmet A. Oturan
Summary: The knowledge of electrochemical advanced oxidation processes (EAOPs) mechanisms has evolved over the past three decades, aided by advances in analytical and spectrometric techniques. The type, nature, and quantity of reactive species generated in EAOPs are controlled by various factors, and their accurate identification is crucial for understanding their reactivity. The potency and reactivity of oxidants generated in EAOPs are similar regardless of the technique used, except in the case of heterogeneous and homogeneous hydroxyl radicals.
CURRENT OPINION IN ELECTROCHEMISTRY
(2021)
Article
Engineering, Environmental
Ralte Malsawmdawngzela, Sarikokba, Thanhmingliana, Diwakar Tiwari, Seung Mok Lee
Summary: This study investigated the removal of Alizarin Yellow using hybrid materials precursor to natural bentonite. The results showed that the hybrid materials exhibited high removal capacity for AY, and remained stable under various conditions. The kinetic study showed that the pseudo-second-order kinetic model fitted the removal process of AY well.
ENVIRONMENTAL ENGINEERING RESEARCH
(2022)
Review
Engineering, Chemical
Peng Dong, Tingna Shao, Yu Zhao, Dong Ji, Yong Yang, Xinhong Zhao, Hongwei Li, Junying Tian, Dongliang Wang, Guixian Li
Summary: The high-efficiency production of xylene/trimethylbenzene from benzene/toluene with methanol is a potential way to optimize the resource structure and promote the development of the petrochemical and coal chemical industry. This paper focuses on the one-step methylation reaction and reviews the mechanism and preparation strategy of high-performance catalysts. It also describes the current research progress and future directions in this field.
Article
Engineering, Environmental
Lei Ma, Yi Huang, Kaixin Zhao, Hao Deng, Qiang Tian, Minhao Yan
Summary: The study successfully removed uranium(VI) from wastewater using natural fluorapatite, with experimental results showing that the adsorption process followed pseudo-second-order kinetics and Langmuir isotherm adsorption model, and the adsorption of uranium(VI) was a spontaneous, endothermic reaction.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Review
Engineering, Environmental
Ying Cao, Wei Qiu, Juan Li, Suyan Pang, Zhong Zhang, Jin Jiang
Summary: This review provides a detailed explanation of the reactive species generated during the UV/NH2Cl process and their role in contaminant degradation, highlighting the importance of reactive nitrogen species. Additionally, compared to other UV-based AOPs, UV/NH2Cl treatment is less sensitive to the water matrix in real waters.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Ella Schoolaert, Ronald Merckx, Jana Becelaere, Serge Rijssegem, Richard Hoogenboom, Karen De Clerck
Summary: Colorimetric nanofibers with halochromic sensing functionality were developed using 2-n-butyl-2-oxazoline (B) and 2-ethyl-2-oxazoline (E) statistical copolymers as support platform. The sensors can detect aqueous solutions of different pH, (hydrochloric) acid and alkaline (ammonia) vapors, and biogenic amines with low detection limits. Tunability of sensor responsivity, sensitivity, and pKa can be achieved through manipulation of dye-polymer interactions and polymer structure.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Engineering, Environmental
Xiong-Feng Zhou, Jian-Ping Liang, Zi-Lu Zhao, Hao Yuan, Jun-Jie Qiao, Qing-Nan Xu, Hong-Li Wang, Wen-Chun Wang, De-Zheng Yang
Summary: This study achieved efficient HA degradation with an ultra-high synergetic intensity by combining bubble discharge with activated carbon; adding AC greatly improved HA removal efficiency and degradation speed; during the plasma process, the presence of AC promoted the adsorption and oxidation of HA.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
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.