Article
Chemistry, Applied
Weican Wang, Teruoki Tago, Hiroyasu Fujitsuka
Summary: This study investigates the selective hydrodeoxygenation (HDO) of C3-4 polyols to diol products using Cu-based catalysts, including carbon-supported monometallic Cu@C and bimetallic MgCu@C. Cu particle size is reduced and metal dispersion is improved with the addition of Mg. The MgCu@C catalyst exhibits high conversion and selectivity for C3 polyols.
Article
Chemistry, Physical
Jianfeng Shan, Yanfeng Xue, Dengfeng Wang, Zheng Chen, Shanhui Zhu
Summary: The study demonstrated that Pd/CoOx catalyst showed high ethanol selectivity and reusability in direct hydrogenolysis of glycerol to ethanol, with the assistance of Cu/SBA-15 as co-catalyst to enhance ethanol yield and inhibit catalyst aggregation. Synergistic catalysis of Pd/CoOx and Cu/SBA-15 achieved a record ethanol yield of 84.5% in glycerol hydrogenolysis reactions.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Multidisciplinary
Jyoti R. Kadam, Tufeil Sartaj Khan, Paresh L. Dhepe
Summary: Designing new catalysts for hydrogenation of sugars is crucial due to the limitations of conventional catalysts like leaching and requirement of severe conditions. In this study, bimetallic catalysts were synthesized and evaluated for their hydrogenation activities. The nature of the support played a significant role in determining the catalyst's selectivity and activity, with basic alumina showing the best performance. The bimetallic catalyst showcased enhanced activity and was suggested to be due to synergistic effects and the basicity of the support.
NEW JOURNAL OF CHEMISTRY
(2023)
Review
Chemistry, Multidisciplinary
Marek Glowka, Tomasz Krawczyk
Summary: The production of 1,2-propanediol is facing significant challenges in the chemical industry due to the increasing demand and environmental regulations. The traditional method is energy intensive, therefore sustainable routes using renewable raw materials are becoming more attractive. This perspective reviews the current research and patents on 1,2-propanediol production, discussing alternative pathways, such as glycerol hydrogenolysis and biotechnological methods, and modern methods like chromium-free catalytic systems and multifunctional catalysts. Biobased 1,2-propanediol has the potential to replace traditional petroleum-derived 1,2-propanediol with environmental and economic benefits.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Pharmacology & Pharmacy
Daniel Villalobos-Garcia, Carlos Alberto Ayhllon-Osorio, Rolando Hernandez-Munoz
Summary: The study aimed to investigate how fructose increases ethanol metabolism rate in the liver, attributing this effect to the consumption of NADH rather than stimulation of mitochondrial re-oxidation through ATP consumption. Ethanol oxidation in rat hepatocytes was significantly increased by fructose, sorbose, and accompanied by changes in metabolites like glucose, glycerol, lactate, and sorbitol.
BIOCHEMICAL PHARMACOLOGY
(2021)
Article
Multidisciplinary Sciences
Xiaoyang Huang, Ouardia Akdim, Mark Douthwaite, Kai Wang, Liang Zhao, Richard J. Lewis, Samuel Pattisson, Isaac T. Daniel, Peter J. Miedziak, Greg Shaw, David J. Morgan, Sultan M. Althahban, Thomas E. Davies, Qian He, Fei Wang, Jile Fu, Donald Bethell, Steven McIntosh, Christopher J. Kiely, Graham J. Hutchings
Summary: This study demonstrates that the reaction rate can be almost doubled by separating the gold and palladium components in bimetallic carbon-supported catalysts. The enhancement is attributed to the coupling of separate redox processes occurring at isolated gold and palladium sites.
Article
Chemistry, Physical
Ana Luiza P. Salgado, Felipe C. Araujo, Andre V. H. Soares, Yutao Xing, Fabio B. Passos
Summary: The study investigates Ruthenium-copper bimetallic catalysts supported on modified zirconia for the hydrogenolysis of glycerol to produce 1,2-propanediol. The addition of copper to the Ru-based catalysts resulted in decreased glycerol conversion and increased selectivity to 1,2-propanediol. The best performing catalyst was bimetallic Ru-Cu/m-ZrO2, while catalysts supported on 3%SO4-ZrO2 showed lower activity likely due to sulfur poisoning. Addition of Cu to Ru led to site blockage and tuning of selectivity towards C-O cleavage.
APPLIED CATALYSIS A-GENERAL
(2021)
Article
Chemistry, Multidisciplinary
Lujie Liu, Ji Cao, Yoshinao Nakagawa, Mii Betchaku, Masazumi Tamura, Mizuho Yabushita, Keiichi Tomishige
Summary: This study investigated the hydrodeoxygenation of erythritol, xylitol, and sorbitol over a Pt-WOx/SiO2 catalyst and found that high yields of 1,4-butanediol, pentanols, and other mono-alcohols can be selectively produced. The catalyst showed differences in activity towards mono-alcohols and polyols, and the Pt-WOx interfacial site was suggested to be the active site for the reactions.
Review
Chemistry, Multidisciplinary
Tianyu Li, David A. Harrington
Summary: This review discusses the reaction mechanisms of glycerol electrooxidation, emphasizing the inferiority of Pd compared to Pt electrodes in cleaving glycerol C-C bonds and the reasons for CO2 generation at high overpotentials. A new reaction mechanism is proposed to explain the generation of side products. Additionally, experimental results for Ni electrodes and the performance of multi-metallic electrocatalysts are presented.
Article
Chemistry, Applied
Zi Zeng, Jiaoyang Xie, Yue Guo, Ruiheng Rao, Bo Chen, Lihua Cheng, Ying Xie, Xinping Ouyang
Summary: Highly dispersed Fe-Pd bimetallic catalyst supported on HZSM-5 showed good catalytic activity for lignin hydrogenolysis, with FP-1.0 bimetallic catalyst achieving high lignin conversion and aromatic monomers yield. The presence of Fe facilitated Pd dispersion and electron transfer, leading to enhanced hydrogen activation and catalytic performance. FP-1.0 bimetallic catalyst may serve as a cost-effective and highly active catalyst for selective lignin hydrogenolysis.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Mohammad Kashif, Sadhasivam Thangarasu, Tae Hwan Oh, Prakash Biswas, Dohyung Kang
Summary: This study developed copper and nickel monometallic and bimetallic catalysts supported over activated carbon through the hydrogenolysis of vapor-phase glycerol, resulting in the production of stable 1,2-propanediol. Bimetallic catalysts exhibited higher product yields, with Cu-Ni(1:1)/AC showing the highest yield and conversion rate. The synergistic effect of copper and nickel, smaller crystallite size, and high acid strength of Cu-Ni(1:1)/AC contributed to its superior performance.
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Energy & Fuels
Lakshmiprasad Gurrala, M. Midhun Kumar, Shweta Sharma, Changyub Paek, R. Vinu
Summary: The study focused on developing Pd-metal oxides supported on activated biochar catalysts for hydrogenolysis of lignin, achieving high selectivity to C9 monomeric phenols. The conversion rate of lignin reached 67-69% with the Pd-metal oxide catalysts, demonstrating the potential for valorizing lignin to phenolic monomers and fine chemicals.
Article
Chemistry, Physical
Yu. A. Chumachenko, V. A. Shkurenok, M. D. Smolikov, T. I. Gulyaeva, E. A. Buluchevskiy, I. P. Prosvirin, I. L. Simakova
Summary: The study explored the one-pot hydrodeoxygenation of a 20 wt% sorbitol aqueous solution over a Pd (0.5 wt%)/WOx-ZrO2 catalyst. It found that the highest yield of C5+ hydrocarbons, mainly consisting of isoalkanes, cycloalkanes, n-alkanes, and arenes, was achieved at reaction conditions of 613 K, 4.0 MPa hydrogen pressure, and WHSV of 1.0 h(-1). The optimal yield of isoalkanes and cycloalkanes with RON>70 was obtained with minimal C6-C8 arenes under these conditions. The physicochemical properties of the catalyst and support were analyzed using various techniques like XRD, N2 physical adsorption, and CO chemisorption.
MOLECULAR CATALYSIS
(2021)
Article
Chemistry, Physical
Chang Liu, Yi Shen, Jinfeng Zhang, Gen Li, Xuerong Zheng, Xiaopeng Han, Lianyong Xu, Shuze Zhu, Yanan Chen, Yida Deng, Wenbin Hu
Summary: This study successfully synthesized metastable Pd nanoparticles with abundant twin boundaries and atomic steps using a solid-state thermal shock strategy. These nanoparticles exhibited excellent reactivity, stability, and CO tolerance in alkaline solutions for the ethanol oxidation reaction.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Mukesh Kumar Poddar, Ankit Pandey, Mukund Kumar Jha, Suresh Chandra Andola, Syed Saif Ali, Sonu Bhandari, Govind Kumar Sahani, Rajaram Bal
Summary: This study investigated the effect of Cu and Ni on the hydrogenolysis of glycerol to produce 1, 2-Propanediol, finding that Cu nanoparticles are critical for the selective production of the desired product. The mesoporous alumina support played a crucial role in enhancing the performance of Cu and Ni oxide particles, with both acid and metal functions contributing to increasing selectivity for 1, 2-Propanediol.
MOLECULAR CATALYSIS
(2021)
Editorial Material
Chemistry, Physical
Francesco Mauriello, Anna Maria Raspolli Galletti
Article
Environmental Sciences
Filippo Fazzino, Francesco Mauriello, Emilia Paone, Rossana Sidari, Paolo S. Calabro
Summary: The management of orange peel waste (OPW) is complex due to seasonality, but ensiling with inoculation from previous processes can increase lactic acid production while minimizing volatile solids loss. Chemical stimulation may enhance liquid product production but with significant VS loss.
Article
Chemistry, Physical
A. Ferlazzo, C. Espro, D. Iannazzo, K. Moulaee, G. Neri
Summary: This study investigates the development of a high-performance conductometric hydrogen sensor using pure and 8% Y2O3-doped zirconium oxide commercial samples. The sensor based on tetragonal ZrO2-Y2O3 (8%) exhibits the best performances in terms of sensor response, response and recovery time, and operating temperature.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Biochemistry & Molecular Biology
Miguel Angel Torres-Pastor, Claudia Espro, Maurizio Selva, Alvise Perosa, Antonio A. Romero Reyes, Sameh M. Osman, Rafael Luque, Daily Rodriguez-Padron
Summary: The intermolecular condensation of glycerol and aminophenol has been investigated using a milling and microwave-assisted sequential strategy to synthesize a benzoxazinone derivative. Mechanochemical activation prior to the microwave-assisted process enhances the contact between the reagents, improving the conversion of aminophenol. Additionally, the sequential approach allows for tuning the selectivity towards the formation of a benzoxazine derivative with potential applications in various biomedical areas.
Article
Chemistry, Analytical
Viviana Bressi, Zahra Akbari, Morteza Montazerozohori, Angelo Ferlazzo, Daniela Iannazzo, Claudia Espro, Giovanni Neri
Summary: A novel bidentate Schiff base (L) was proposed for the detection of Zn ions in water. The synthesized Schiff base L was characterized and found to exhibit fluorescence quenching in the presence of Zn2+ ion. A modified L-M/SPCE sensor with high sensitivity and selectivity to Zn ions was developed for electroanalytical determination in water.
Article
Chemistry, Multidisciplinary
Emilia Paone, Mariachiara Miceli, Angela Malara, Guozhu Ye, Elsayed Mousa, Elza Bontempi, Patrizia Frontera, Francesco Mauriello
Summary: After appropriate thermal treatments, spent Li-ion batteries can be directly used as catalysts for selective hydrogenation, showing the potential of using and recycling the batteries as precious catalytic materials.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Physical
Consuelo Celesti, Teresa Gervasi, Nicola Cicero, Salvatore Vincenzo Giofre, Claudia Espro, Elpida Piperopoulos, Bartolo Gabriele, Raffaella Mancuso, Giovanna Lo Vecchio, Daniela Iannazzo
Summary: This study investigated the possibility of enhancing the antibacterial properties of titanium implants by covalently inserting bioactive ammonium salts onto the surface of titanium substrates. The chemically modified samples showed good resistance against bacterial adhesion, particularly when containing long alkyl chains. The results underscored the importance of chemical functionalization in improving the antimicrobial activity of metal surfaces.
Editorial Material
Chemistry, Multidisciplinary
Emilia Paone, Francesco Mauriello
Summary: In this study, the authors propose a new method for the conversion of biomass resources into renewable compounds for the preparation of biodegradable plastics, which is a challenge in the field of modern bio-refinery.
Article
Chemistry, Physical
Jiabao Nie, Zhihua Zhu, Yuhe Liao, Xuan Xiao, Francesco Mauriello, Zehui Zhang
Summary: Selective hydrogenation of quinolines to 1,2,3,4-tetrahydroquinolines can be achieved under mild conditions using nitrogen-doped carbon supported ruthenium nanoparticles. The reaction exhibits excellent activity and selectivity at temperatures between 30 and 50 degrees Celsius and at 10 bar H-2 pressure.
MOLECULAR CATALYSIS
(2022)
Article
Multidisciplinary Sciences
Adele Muscolo, Francesco Mauriello, Federica Marra, Paolo Salvatore Calabro, Mariateresa Russo, Rosaria Ciriminna, Mario Pagliaro
Summary: AnchoisFert, an organic fertilizer made from milled anchovy leftovers and biobased limonene, is found to be highly effective in promoting the growth of Tropea's red onion. It outperforms commonly used organic and chemical fertilizers, contains rich nutrients without antibiotics or antibiotic resistance genes, and can replace conventional organic and inorganic fertilizers. This discovery closes the material cycle for the most fished species in the seas and paves the way for a new class of high-performance organic fertilizers derived from abundant biowaste through a low-cost and environmentally-friendly circular economy process.
Article
Chemistry, Multidisciplinary
M. Ronda-Leal, C. Espro, N. Lazaro, M. Selva, A. Perosa, S. M. Osman, A. Pineda, R. Luque, D. Rodriguez-Padron
Summary: Highly active, selective, and stable titania-based catalytic materials were synthesized using a simple and environmentally friendly microwave-assisted approach. The materials were further modified with metal nanoparticles using a simple chemical reduction method. The synthesized materials exhibited excellent catalytic performance in the reductive amination of furfural towards furfuryl amine, and showed remarkable recyclability after six reaction cycles.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Chemistry, Physical
Consuelo Celesti, Daniela Iannazzo, Claudia Espro, Annamaria Visco, Laura Legnani, Lucia Veltri, Giuseppa Visalli, Angela Di Pietro, Paola Bottino, Maria Assunta Chiacchio
Summary: Hybrid hydrogels composed of chitosan (CS) have great potential in bone tissue engineering and regeneration. The addition of polyhedral oligomeric silsesquioxanes (POSS) has been shown to improve the properties of the hybrid composites. In this study, we investigated the effect of different concentrations of POSS on the properties of the final composites and found that the CS/POSS hydrogels have good biocompatibility and controlled drug release ability.
Article
Chemistry, Multidisciplinary
Mario Pagliaro, Claudia Lino, Daniela Maria Pizzone, Francesco Mauriello, Mariateresa Russo, Adele Muscolo, Rosaria Ciriminna, Giuseppe Avellone
Summary: The analysis reveals the presence of 16 amino acids in AnchoisFert, a new organic fertilizer co-product of fish oil extraction. These amino acids greatly contribute to the sustainability of anchovy fishing, processing and consumption.
Article
Engineering, Geological
Daniela Dominica Porcino, Giuseppe Tomasello, Francesco Mauriello, Angela Malara
Summary: This research conducted comprehensive experimental investigation on the geotechnical characterization of new synthetic lightweight aggregates (SLAs) composed of reused biomass fly ash and waste plastics. The SLAs were evaluated for their compressibility, creep properties, compaction features, stress-strain-strength behavior, hydraulic conductivity, and water absorbability. The study found that the fly ash-HDPE aggregate had less compressibility compared to the fly ash-LDPE aggregate, and its creep coefficient was comparable to or even lower than that of other recycled materials. The aggregates also exhibited favorable permeability properties and proved to be environmentally sustainable.
ENVIRONMENTAL GEOTECHNICS
(2023)
Article
Chemistry, Physical
Ziliang Yuan, Guanghui Wang, Xun Li, Yurong He, Pan Wang, Francesco Mauriello, Zehui Zhang
Summary: Ni nanoparticle catalysts supported on Vulcan carbon (VCX) were prepared and used for the acceptorless dehydrogenation of primary amines to secondary amines. The best performance was achieved with Ni(A)/VXC with Ni particle size of 11.9 nm at 150 degrees C. This work provides inspiration for further investigation into acceptorless dehydrogenation using non-noble metal catalysts.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Physical
Haojie Li, Bingke Yang, Zhen Yao, Xuetao Wang, Kaiming Shen, Mengjie Liu
Summary: This study systematically investigates the influence of metal and nonmetal element doping on the photochemical properties of g-C3N4 for efficient catalytic AB hydrogen production. It provides a design method for high performance bifunctional catalysts of photocatalysis and metal catalysis. The results show that both non-metals (B, P) and metals (Ru, Ni) have efficient regulatory effects on the band structure of g-C3N4, resulting in a reduced band gap and improved hydrogen production. The study offers a theoretical method for the coupling of metal catalysis/photocatalysis ammonia borane to produce hydrogen.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Shrouq Mujahed, Davide Gandolfo, Luigi Vaccaro, Evgueni Kirillov, Dmitri Gelman
Summary: In this study, a high-valent Ru(IV) bifunctional catalyst was successfully applied for the hydrosilylation of various functional groups. The high-valent hydride complexes showed high chemoselectivity and affinity towards reducing polar bonds. The scope, limitations, and plausible mechanism of the reaction were described.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Yongzhen Peng, Kongchen Xia, Qi Wu
Summary: In this study, we report an engineered cyclohexanone monooxygenase that can be used for the asymmetric synthesis of chiral alpha-deuterated carbonyl compounds via enantioselective reductive dehalogenation. The engineered enzyme exhibits good chemoselectivity, stereoselectivity, and d-incorporation, making it a promising method for the synthesis of deuterated drugs.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Qi Yang, Ruixuan Xu, Hongqi Nie, Qilong Yan, Jun Liu, Jiuyu Chen, Yunlan Sun
Summary: The adsorption and decomposition processes of ammonium perchlorate (AP) on pure-Al and Al2O3/Al surfaces were investigated using density functional theory. The results showed that the pure-Al surface is more conducive to the decomposition of AP and the activation of NH3, while the Al2O3/Al surface promotes the disengagement of H and NH3 decomposition.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Yudong Hu, Guochao Xu, Ye Ni
Summary: This study identified a novel phenylalanine dehydrogenase (QtPDH) with high catalytic efficiency and thermal stability, making it a promising biocatalyst for industrial production of bulky aromatic primary amines. QtPDH exhibited a broader substrate specificity and significantly longer half-life compared to BbPDH.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Weiling Zhao, Zhiling Huang, Hui Shen, Xianglong Li, Shaofen Zhao, Bo Xie, Shengjie Xia
Summary: This study investigated the effects of metal doping and crystal plane selection on the CO2 adsorption properties of MgO using density functional theory (DFT) methods. The results showed that the appropriate crystal plane and metal doping can improve the adsorption properties of MgO on CO2. The influence of different crystal planes and metal dopants on CO2 adsorption properties varied significantly. The research provides some references for experimental studies on CO2 adsorption by MgO by combining the dual modification of crystal plane and doped metal.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Jie Zhang, Jinwei Chen, Zongbo Shi, Junyu Zhao, Runsheng Zhuo, Ruilin Wang
Summary: In this study, a double-layered silicalite-1 support with high specific surface area was synthesized, and a magnesium modification strategy was adopted to improve the catalytic activity and stability of the zinc-based catalyst. The modified catalyst showed enhanced propylene selectivity and anti-coking property.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Pei-Sen Gao, Chang-Wang Pan, Cheng Liu, Wen -Tong Chen
Summary: Asymmetric electrocatalysis offers a unique approach to obtain enantioenriched molecules that are difficult to obtain through conventional methods. This study developed a novel bifunctional electrocatalyst, enabling the oxidative kinetic resolution of chiral 1,4-diols and gamma-lactones. The work demonstrates the potential of bifunctional electrocatalysis for asymmetric synthetic methods and its importance in the development of novel electrocatalytic methods.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Qinzhe Lin, Xuanjin Lv, Xianming Zeng, Mengning Zhong, Qiyun Wu, Huilin Ren, Shenpeng Xu, Wentian Chen, Wenting Du, Jun Li
Summary: The catalytic efficiency of engineered IRED M5 was found to be relatively low when tasked with a bulky amine substrate. Rational design led to the mutants M203V and F260A, with F260A exhibiting a substantial improvement in conversion and stereoselectivity. The study revealed the potential molecular mechanisms underlying the effect of F260A and M203V on catalytic performance.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Zhishuai Wang, Fengyun Su, Hailong Cao, Mengzhen Tian, Xiang Li, Haiquan Xie, Xiaoli Jin, Zhengdao Li, Xin Ying Kong
Summary: In this study, the efficiency of photocatalytic CO2 reduction was significantly enhanced by incorporating nickel oxide onto niobium pentoxide. The resulting catalyst showed remarkable methane and carbon monoxide production improvements.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
A. Yu. Sidorenko, Yu. M. Kurban, T. V. Khalimonyuk, I. V. Il'ina, N. S. Li-Zhulanov, O. S. Patrusheva, V. V. Goltsova, M. P. Bei, Zh. V. Ihnatovich, J. Warna, K. P. Volcho, N. F. Salakhutdinov, D. Yu. Murzin, V. E. Agabekov
Summary: This study provides a comprehensive investigation into the catalytic condensation of renewable 3-carene with formaldehyde for the one-step preparation of terpenoid trans-4-hydroxymethyl-2-carene. Various acids and alumino-silicates were found to catalyze the reaction, but the selectivity to the desired product was limited. Phosphoric acid showed the highest selectivity, and an excess of formaldehyde or catalyst loading significantly increased the yield of the target product. Water presence also led to increased selectivity. Additionally, a detailed mechanism for the 3-carene condensation with formaldehyde was proposed and confirmed through kinetic modeling.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Meng-Yu Rong, Jing Nie, Shen Li, Jun-An Ma
Summary: We synthesized a new class of chiral quaternary ammonium salts and used them as catalysts in phase-transfer catalytic asymmetric alkylation. By employing these catalysts, we obtained a series of chiral fluorinated aromatic alpha-amino acid derivatives with high yields and enantioselectivities.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Zhaozhou Wei, Guangtao Wei, Huixian Che, Deyuan Xiong, Linye Zhang, Ruihua Xue, Yalin Tang, Xuanli Lu
Summary: This study demonstrates that small-sized graphite crystallite and highly defective carbon-based catalysts can increase the -SO3H density of the catalysts and modulate their surface electronic properties, leading to improved efficiency in the alpha-pinene hydration reaction. The reduction of graphite crystallite size is considered a critical step in enhancing the selectivity of alpha-terpineol.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Kempanna S. Kanakikodi, Nagendra Kulal, K. S. Subramanya, M. S. Puneethkumar, Bhavana B. Kulkarni, Ganapati Shanbhag, Sanjeev P. Maradur
Summary: An effective and highly selective protocol for synthesizing asymmetric organic carbonates using dimethyl carbonate (DMC) as a reactant and solvent has been developed. The performance of CeO2 nanostructures with different morphologies in the carbonate interchange reaction (CIR) of alcohols was investigated, and the CeO2 nano-catalyst with rod morphology exhibited the highest oxygen vacancy and remarkable enhancement in conversion. The CeO2 characterization data revealed that the exposed active sites, defect density, coordination state of surface atoms, and reducibility of the catalytic materials are the contributing factors to its high catalytic activity. CeO2 can be easily recovered and reused for multiple cycles.
MOLECULAR CATALYSIS
(2024)
Article
Chemistry, Physical
Yanzhao Gao, Xianglei Meng, Shiqi Huang, Hui Wu, Liantao Jiang, Yu Zhou, Yuting Song, Yanyan Diao
Summary: Gamma alumina modified with alkaline earth metal shows improved catalytic performance for hydrogenation reactions. Pd catalysts supported by Al2O3 and Mg-modified Al2O3 were synthesized and their structure, composition, and surface acidity were investigated. The results showed that Pd/MgO-Al2O3-2 catalyst exhibited the best catalytic performance due to its metallic state palladium and weak acid sites.
MOLECULAR CATALYSIS
(2024)
