Article
Nanoscience & Nanotechnology
Zelin Wu, Yunjia Wu, Qingyan Yuan, Jian Zhang, Yibo Dou, Jingbin Han
Summary: In this study, a Cl--intercalated CoFe layered double hydroxides (CoFe-Cl-LDH/CNT) composite was successfully synthesized and demonstrated as a novel high-performance anode for ACIBs in a neutral NaCl aqueous solution. The material showed a high initial capacity and good cycling stability, attributed to the reversible intercalation/deintercalation of Cl- ions and the valence changes of Co2+/Co3+ and Fe2+/Fe3+. Furthermore, the hybridization with CNTs improved the electronic conductivity. This research provides a new opportunity for the future development of ACIBs or aqueous desalination technology.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Construction & Building Technology
Xiujiang Pang, Li Chen, Yawen Shi, Yuan Meng, Xueyu Pang, Yanguang Yuan, Yuan Liu
Summary: This study found that the use of magnesium aluminum layered double hydroxides nanosheets can improve the water resistance and compressive strength of magnesium oxychloride cement.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Engineering, Environmental
Qing Yin, Tongde Wang, Zhihao Song, Shuhan Yang, Yidong Miao, Yunjia Wu, Yanwei Sui, Jiqiu Qi, Yongzhi Li, Danyang Zhao, Guohua Gao, Jingbin Han
Summary: The chloride-ion battery (CIB) based on anion transfer is important for developing new battery technologies. Layered double hydroxide (LDHs), as a rare anion intercalated layered material, has attracted attention as promising cathodes for CIBs. However, developing a general methodology to effectively design and assess the usability of unexploited LDHs for CIBs is still challenging due to the compositional diversity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Construction & Building Technology
Heng Yang, Chuansheng Xiong, Xiaoyan Liu, Ang Liu, Tianyu Li, Rui Ding, Surendra P. Shah, Weihua Li
Summary: Hydrotalcite materials, also known as LDHs, have strong ion exchange properties and are widely used in reinforced concrete corrosion protection. LDHs intercalating with corrosion inhibitors have multiple functions, such as reducing degradation, prolonging protection effects, and improving environmental alkalinity. The calcination-rehydration method shows potential for large-scale application in preparing LDHs.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Chemistry, Physical
Tomohito Kameda, Hanako Kikuchi, Fumihiko Kitagawa, Shogo Kumagai, Yuko Saito, Masayuki Kondo, Yoichi Jimbo, Toshiaki Yoshioka
Summary: This study demonstrated a new method for regenerating culture media by using HEPES · Mg-Al LDH adsorbent to remove lactate, which is easy to operate and cost-effective, with lower cytotoxicity for cell growth. This method is expected to be adopted in practical applications.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Multidisciplinary
Martina Serafini, Federica Mariani, Andrea Fasolini, Eleonora Tosi Brandi, Erika Scavetta, Francesco Basile, Domenica Tonelli
Summary: New nanostructured CuMgAl Layered Double Hydroxide (LDH) based materials are synthesized on a carbonaceous gas diffusion membrane. The catalysts are thoroughly investigated, revealing the presence of multiple species. A composite with an intimate contact between a ternary CuMgAl LDH and Cu-0/Cu2O species is obtained by a reproducible potentiodynamic deposition. The optimized catalyst, CuMgAl 2:1:1 LDH, exhibits a high productivity of 2.0 mmol(CH3COOH) g(cat)(-1) h(-1) in the electrochemical CO2 reduction to CH3COOH.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yajun Zhao, Pengjun Zhang, Jinrui Liang, Xiaoyu Xia, Longtao Ren, Li Song, Wen Liu, Xiaoming Sun
Summary: This study reported a trinary layered double hydroxide with hydrogen vacancies as a new cathode material for aqueous zinc-ion batteries, showing high capacity and stable cycling performance. Experimental and theoretical studies revealed that the exposed lattice oxygen atoms due to hydrogen vacancies serve as active sites for zinc-ion storage, while the synergy of trinary transitional metal cations can suppress octahedral distortion.
ADVANCED MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Mengyi Zhai, Jihui Zhao, Dongmin Wang, Xuan Gao, Qibao Wang, Zhangheng Li, Ming Zhang
Summary: LDHs play a significant role in improving the durability of concrete by capturing harmful anions in the concrete pore solutions. They also have a positive impact on the physical, mechanical, and hydration properties of cement-based materials, thus serving as a promising modified material.
NANOTECHNOLOGY REVIEWS
(2022)
Article
Environmental Sciences
G. Romero Ortiz, L. Lartundo-Rojas, J. Enrique Samaniego-Benitez, Y. Jimenez-Flores, H. A. Calderon, A. Mantilla
Summary: Functionalized ZnAl layered double hydroxide photocatalyst was synthesized by the addition of sodium dodecyl sulfate during coprecipitation and subsequent calcination, leading to improved degradation and mineralization of phenol under UV light irradiation, attributed to the presence of sulfate radicals as confirmed by EPR study.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Xiaojuan Cheng, Jiaqin Deng, Xiaodong Li, Xue Wei, Yanan Shao, Yanlan Zhao
Summary: A novel composite material SL-1.0 was synthesized in this study, which demonstrated great potential for simultaneous removal of benzotriazole and lead ion from wastewaters due to its facile synthesis and excellent adsorption capacity. The adsorption mechanism involved electrostatic attraction and chemical bonding with surface functional groups, with hydrogen bonding and 7C-7C interaction mainly contributing to benzotriazole adsorption and complexation with surface function groups dominating lead ion adsorption.
Article
Chemistry, Multidisciplinary
Bin Cai, Martin Axelsson, Shaoqi Zhan, Mariia V. Pavliuk, Sicong Wang, Jingguo Li, Haining Tian
Summary: This study reports the photocatalytic reduction of CO2 to CO in aqueous solution using polymer dots (Pdots) without the need for additional co-catalysts. The Pdots showed high CO production rate and selectivity, and maintained stability after repeated cycles of CO2 re-purging. Mechanistic study revealed the process of the photocatalytic reaction and highlighted the potential application of organic Pdots for CO2 reduction.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Environmental Sciences
Xiaoyu Yuan, XiaoYan Jing, Hui Xu, Xiaochen Zhang, Jing Xu
Summary: The MP@LDH adsorbent demonstrated high adsorption capacity and selectivity for U(VI) extraction from aqueous solution, with a removal rate of almost 90% in competitive sorption experiments. Additionally, it achieved an 88.18% removal rate under simulated seawater conditions, showing great potential for practical application in extracting uranium from seawater.
Article
Chemistry, Inorganic & Nuclear
Yan Wang, Yong Zhang, Xiaolin Liu, Sen Sun, Shiyi Qin, Jiaqi Huang, Bowei Chen
Summary: In this study, magnetic layered double oxides coated with carbon dots (MLCs) were synthesized for capturing uranium from aqueous solution. The MLC composite with a Co to Al molar ratio of 4:1 exhibited the highest affinity to uranium(vi), with short equilibrium time, high adsorption efficiency, and large removal capacity. The adsorption behavior of MLCs for uranium(vi) followed the Langmuir and pseudo-second-order models, and redox reaction, chemical complexation, and electrostatic attraction were found to play significant roles in uranium(vi) separation. MLC-3 showed excellent reusability and could be used as a potential adsorbent in uranium(vi)-containing wastewater treatment.
DALTON TRANSACTIONS
(2023)
Article
Engineering, Environmental
Adrian Pastor, Chunping Chen, Gustavo de Miguel, Francisco Martin, Manuel Cruz-Yusta, Jean-Charles Buffet, Dermot O'Hare, Ivana Pavlovic, Luis Sanchez
Summary: Newly prepared NixTi-AMO-LDHs photocatalysts showed superior performance in reducing NOx gases under simulated sunlight compared to conventional benchmarks, with exceptional reusability and low toxic NO2 release. The high surface area and pore volume of the catalysts played a significant role in the De-NOx process by facilitating adsorption of NO2 and N2O4 intermediates. The 2D character of the AMO-LDHs contributed to an enhancement in radical species production and reduction of charge carrier recombination under illumination.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Zhihao Song, Qing Yin, Shuhan Yang, Yidong Miao, Yunjia Wu, Yong-Zhi Li, Yaojian Ren, Yanwei Sui, Jiqiu Qi, Jingbin Han
Summary: Chloride-ion batteries (CIBs) have attracted increasing attention for large-scale energy storage applications due to their high theoretical energy density, dendrite-free characteristic, and abundance of chloride-containing materials. However, cathodes for CIBs face challenges of volume effect and slow Cl- diffusion kinetics, resulting in limited rate capability and cycling life. This study presents an unconventional Ni5Ti-Cl LDH cathode with a high nickel ratio, which exhibits superior Cl-storage performance with a reversible capacity of 127.9 mAh g(-1) over 1000 cycles at a large current density of 1000 mA g(-1) and minimal volume change of 1.006%. The excellent performance is attributed to the synergetic effects of high redox activity from Ni2+/Ni3+ and pinning Ti that restricts local structural distortion and enhances chloride adsorption during reversible Cl- intercalation/de-intercalation. This work provides an effective strategy for designing low-cost LDH materials for high-performance CIBs and other halide-ion batteries.
Article
Chemistry, Applied
Yong-Ze Tzeng, Ching-Jung Chang, Ming-Chang Yang, Meng-Jung Tsai, Kentaro Teramura, Tsunehiro Tanaka, Hwei Voon Lee, Joon Ching Juan, Jing-Yun Wu, Yu-Chuan Lin
Summary: Zn/ZSM-5 was prepared using a combinative method of steam-assisted crystallization (SAC) and hard templating, with Zn-based MOFs as sacrificial agents. The catalysts derived from MOFs showed differences in the concentration of Lewis acidic Zn2+ species and the compositions of Zn(OH)(+) and ZnO compared to impregnated Zn/ZSM-5. Using ZIF-8 as sacrificial agent led to higher concentration of Lewis acidic Zn2+ species and a higher ratio of Zn(OH)(+)-to-ZnO in Zn/ZSM-5, resulting in better performance in the methanol aromatization reaction.
Article
Chemistry, Physical
Shuying Wang, Kentaro Teramura, Hiroyuki Asakura, Saburo Hosokawa, Tsunehiro Tanaka
Summary: Researchers have successfully increased the CO evolution selectivity and rate by modifying Ag-loaded ZnTa2O6 with Zn, which demonstrates potential for application in alternative technologies for fossil fuels.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Energy & Fuels
Shoji Iguchi, Siyuan Jia, Yuji Ogishima, Yuki Senba, Hitoshi Ogihara, Ichiro Yamanaka
Summary: A new compound Co(PV4Py)/KB(673 K) prepared by partial pyrolysis showed efficient catalytic activity for the electro-reduction of CO2 to CO in a solid polymer electrolyte (SPE) electrolysis gas cell without the use of carbonate solutions.
Article
Chemistry, Physical
Shoji Iguchi, Masashi Kataoka, Ryosuke Hoshino, Ichiro Yamanaka
Summary: Direct electro-epoxidation of C3H6 with water was successfully achieved using a solid polymer electrolyte (SPE) electrolysis cell. The Pt oxide species (Pt(ii) and Pt(iv)) were found to play a crucial role in the catalysis for electro-epoxidation of C3H6.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Applied
Xuanwen Xu, Hiroyuki Asakura, Saburo Hosokawa, Tsunehiro Tanaka, Kentaro Teramura
Summary: Chromium-based cocatalysts affect H2 production in the overall water splitting reaction during the photo-catalytic conversion of CO2 with H2O. To understand the mechanism by which chromium species promote or suppress H2 evolution, the reaction was performed with the addition of chromate ions on different photocatalysts. It was observed that chromate ions suppress H2 evolution when the photocatalyst surface is highly protonated.
Article
Chemistry, Applied
Soichi Kikkawa, Kentaro Teramura, Hiroyuki Asakura, Saburo Hosokawa, Tsunehiro Tanaka
Summary: Through in situ time-resolved XAS, the dynamic behavior of the formation of two-dimensional low-coordinated Pt particles through reduction of PtOx particles by H2 was observed. The reduction of relatively stabilized PtOx species occurred below 373 K, while the reduction of interfacial PtOx species on the γ-Al2O3 surface occurred above 373 K. The morphology changed from three-dimensional PtOx particles to two-dimensional low-coordinated Pt particles during the in situ reduction of PtOx/Al2O3 at 473 K, while at 373 K, the interfacial PtOx species remained after its reduction. This study demonstrated that in situ time-resolved XAS is one of the most definitive techniques to unveil the MSI effect during the reductive formation process of Pt nanoparticle catalysts loaded on γ-Al2O3.
Article
Chemistry, Physical
Soichi Kikkawa, Kentaro Teramura, Kazuo Kato, Hiroyuki Asakura, Saburo Hosokawa, Tsunehiro Tanaka
Summary: This study monitored the adsorbed species on supported metal catalysts during the hydrogenation of CO2 and elucidated the sites of CH4 formation. The combination of X-ray absorption spectroscopy and diffuse reflectance infrared Fourier transform spectroscopy techniques was used to analyze the catalysts. The results revealed that CO species co-adsorbed with hydrogen species on the perimeter Pt sites were hydrogenated to CH4 at the interface between Pt particles and Al2O3 surface.
Article
Chemistry, Physical
Yuji Yoshiyama, Saburo Hosokawa, Hiroyuki Asakura, Kentaro Teramura, Tsunehiro Tanaka
Summary: Investigation of Co-doped SrTiO3 materials with high structural stability shows their ability to release and store a large amount of oxygen in a reversible topotactic process, with much larger oxygen storage capacity than conventional Pd/Ce0.5Zr0.5O2 (Pd/CZ).
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Shuji Nogami, Naoki Shida, Shoji Iguchi, Kensaku Nagasawa, Hideo Inoue, Ichiro Yamanaka, Shigenori Mitsushima, Mahito Atobe
Summary: This study systematically investigates the electrocatalytic hydrogenation of alkynes using Pt-Pd electrocatalysts in a proton-exchange membrane reactor. The active sites on the Pt-Pd electrocatalysts are identified through detailed characterizations, and the roles of Pt and Pd metals in the reaction are clarified through voltammetric studies. A synergistic mechanism of electrocatalytic hydrogenation is proposed.
Article
Chemistry, Applied
Saburo Hosokawa, Yudai Oshino, Kosuke Beppu, Toyokazu Tanabe, Teruki Motohashi, Hiroyuki Asakura, Kentaro Teramura, Tsunehiro Tanaka
Summary: Automotive exhaust gases containing harmful gases can be purified using Pd-loaded catalyst, and a material with high oxygen storage performance is crucial for effective purification. Pd/Ca2AlMnO5+8 demonstrates efficient purification of exhaust gases under fluctuating oxygen concentration due to its high oxygen release and storage capacities. The redox properties of the Mn species in Pd/Ca2AlMnO5+8 are responsible for the NO reduction behavior under fluctuating oxygen concentration, as observed from operando and static X-ray absorption fine structure (XAFS) spectra.
Article
Chemistry, Physical
Xuanwen Xu, Hiroyuki Asakura, Saburo Hosokawa, Tsunehiro Tanaka, Kentaro Teramura
Summary: We have surveyed non-metal inorganic cocatalysts for photocatalytic conversion of CO2 using H2O as an electron donor, and found that Zn-based compounds exhibit the best performance for CO evolution.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Yuji Yoshiyama, Saburo Hosokawa, Masaaki Haneda, Masashige Morishita, Hiroyuki Asakura, Kentaro Teramura, Tsunehiro Tanaka
Summary: An environmental catalyst was synthesized by substituting a transition metal (Mn, Fe, or Co) into the Ti site of SrTiO3, and its reactivity of lattice oxygen was evaluated. The Mn- and Co-doped SrTiO3 catalysts showed higher activities in CO oxidation compared to Pt/Al2O3 catalysts, despite having lower surface areas. Xray absorption fine structure (XAFS) measurements revealed that the lattice oxygen of Co-doped catalyst was released at the lowest temperature. Isotopic experiments indicated that the lattice oxygen participated in CO oxidation on Fe- and Co-doped catalysts via the Mars-van Krevelen mechanism, while the contribution of lattice oxygen to CO oxidation on Mn-doped catalyst was relatively negligible, following the Langmuir-Hinshelwood mechanism. This paper demonstrates that the catalytic mechanism can be adjusted by substituting transition metals into SrTiO3.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Xuanwen Xu, Tsunehiro Tanaka, Kentaro Teramura
Summary: In this work, the performances of Ag-loaded Ga2O3 materials were examined for the photocatalytic conversion of CO2 by H2O. It was found that Ag-loaded fl-Ga2O3 exhibited high selectivity for CO evolution.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Xuanwen Xu, Hiroyuki Asakura, Saburo Hosokawa, Tsunehiro Tanaka, Kentaro Teramura
Summary: Ag-loaded NaTaO(3 )was used for the photocatalytic conversion of CO2 using H2O as the electron donor. The effects of nanoparticle size, Ag loading, and crystal structure on the photocatalytic activity and CO selectivity were investigated. Ag-Cr dual cocatalysts were developed to maintain stable and selective CO production.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Eri Fudo, Atsuhiro Tanaka, Shoji Iguchi, Hiroshi Kominami
Summary: The study investigates the introduction of a chromium species into gold-loaded titanium (IV) oxide using the photodeposition method, revealing that the electron-rich state of Au under a thin Cr(OH)(3) layer accelerates water oxidation and water splitting reactions. Plasmonic oxidation on Cr(OH)(3)/Au and effective hole transfer by Cr(OH)(3) are also demonstrated.
SUSTAINABLE ENERGY & FUELS
(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.
