Article
Chemistry, Physical
Yuxin Wu, Yuncheng Ding, Jianhong Xu, Yundong Wang, Kathryn Mumford, Geoffrey W. Stevens, Weiyang Fei
Summary: The study developed a continuous-flow microreaction system for the synthesis of propylene carbonate, and comprehensively evaluated the effects of reaction temperature, molar fraction of catalyst, operating pressure, residence time, molar ratio of CO2/PO, and recycling performance of catalyst on the overall performances. Under different reaction conditions, the flow patterns varied between slug flow and annular flow. The results showed that at 140 degrees C and 3.0 MPa with a residence time of 166 s, the yield of propylene carbonate (PC) can reach 99.7%, and the recycling performance of the designed system greatly conforms the future trend of green chemistry.
GREEN ENERGY & ENVIRONMENT
(2021)
Review
Chemistry, Organic
Francesco Della Monica, Carmine Capacchione
Summary: Carbon dioxide utilization is an effective strategy to reduce the carbon footprint of the chemical industry. The incorporation of carbon dioxide into cyclic organic carbonates and aliphatic polycarbonates has received great attention in the field of homogeneous catalysis. Recent advancements in understanding the reaction mechanisms have led to the design of new catalytic systems.
ASIAN JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Applied
Kuikui Zhang, Zhenbang Liu, Ning Liu
Summary: A three-component catalytic system was developed, involving benzimidazolium salts, CrCl2, and TBAB, with each component playing a distinct role in the catalytic process as clarified by control experiments and spectroscopic measurements. The terminal epoxides showed high reactivity in the catalytic system under mild conditions, while increasing the temperature, CO2 pressure, and/or prolonging the reaction time also enhanced catalytic activity for internal epoxides.
APPLIED ORGANOMETALLIC CHEMISTRY
(2021)
Article
Engineering, Environmental
Ran Ping, Han Zhang, Shasha Wang, Fusheng Liu, Guojie Zhang, Dongchao Wang, Mengshuai Liu
Summary: This paper reports a novel porous hetero-framework material for the utilization of carbon dioxide, which is used for the synthesis of cyclic carbonates. The material is found to have high specific surface area and multiple active sites, and exhibits excellent catalytic performance and recyclability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Heming Zhang, Chan Meng, Qian Su, Li Dong, Wen Liu, Xiaokang Wang, Yunong Li, Weiguo Cheng
Summary: A series of halogen-free phosphonium ionic liquids designed with steric hindrance regulation were synthesized and used as catalysts for the conversion of CO2 into cyclic carbonates. The presence of amino groups and meta-substitution in the ILs were found to significantly enhance catalytic activity.
Article
Chemistry, Physical
Qianmeng Zhao, Xiaoqian Yao, Qian Su, Lili Deng, Jian Chen, Yunong Li, Li Dong, Zifeng Yang, Weiguo Cheng
Summary: This study designed and synthesized poly(ionic liquid)s catalysts with high ionic density for the synthesis of cyclic carbonate from CO2 and epoxide. The catalyst exhibited excellent catalytic performance, comparable to homogeneous catalysts, with convenient product separability. This research provides a novel strategy for developing highly efficient catalysts for CO2 conversion to high value products.
Article
Chemistry, Physical
Roberto Calmanti, Nicola Sargentoni, Maurizio Selva, Alvise Perosa
Summary: The study presents a new catalytic protocol capable of converting unsaturated methyl oleate into carbonate in a single step, achieving high yield and retention of cis-configuration.
Article
Chemistry, Organic
Zengmin Li, Yating Wen, Ning Wang, Feng Han, Ying Li, Hongfeng Zhuang, Chengxia Miao
Summary: The study developed a metal-free catalytic system, including recyclable ionic liquids and environmentally friendly solvent, for atom economic organic reactions. The system was capable of efficiently conducting substitution reactions of alcohols and 4-hydroxycoumarins, achieving yields of up to 99%.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Biochemistry & Molecular Biology
Peter-Renaat Van den Mooter, Liridona Dedvukaj, Ivo F. J. Vankelecom
Summary: This study investigated the performance of thin-film composite membranes using inexpensive Aliquat as the organic phase for various applications. The membranes prepared with Aliquat showed better retention of flavor compounds compared to traditional organic phases and a commercial RO membrane.
Article
Materials Science, Multidisciplinary
Jiarui Gu, Tianxiang Zhao, Hua Liang, Peng Chen, Chunliang Yang, Fei Liu
Summary: In this study, an efficient catalyst for CO2 conversion was developed, which was a Zn-based coordination polymer (ZnBr2-CP) synthesized from a tridentate pyridine ligand. The catalyst exhibited both high activity of homogeneous catalysts and recoverable features of heterogeneous catalysts. It achieved excellent activity in the cycloaddition of CO2 with epoxides under solvent- and co-catalyst-free conditions, with yields as high as 99% for various cyclic carbonates at 80°C for 24 hours. This study provides insights for the design of efficient catalysts for CO2 conversion.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Khushboo S. Paliwal, Debashrita Sarkar, Antarip Mitra, Venkataramanan Mahalingam
Summary: Photothermal catalysts prepared by calcining Chitosan show excellent ability to convert epoxides into cyclic carbonates under mild reaction conditions, demonstrating high photothermal conversion efficiency and catalytic activity.
Article
Chemistry, Multidisciplinary
Jie Wang, Jielin Huang, Songsong Chen, Junping Zhang, Li Dong, Xiangping Zhang
Summary: This study systematically investigated the reaction mechanism of synthesizing ethylene carbonate from urea and ethylene glycol using [P4444][Br]/ZnBr2 as the catalyst. Qualitative and quantitative analyses, as well as in situ spectroscopic detection, revealed the key components and catalytic processes involved in the reaction.
REACTION CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Applied
Li-Fei Xiong, Ran Bu, Shuai-Liang Yang, En-Qing Gao
Summary: CO2-epoxide cycloaddition is an attractive method for the utilization of CO2, but efficient and heterogeneous catalysis remains challenging. In this work, stepwise optimization of ionic metal-organic frameworks (IMOFs) catalysts was performed by integrating multiple catalytic sites into MIL-101. The optimized IMOFs showed superior catalytic activity compared to previous ionic heterogeneous catalysts, especially the dicationic catalyst which could quantitatively convert epichlorohydrin to carbonate within 1 hour.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Physical
Xiaofeng Zhang, Junhao Ding, Bo Qiu, Dajian Li, Yunpeng Bian, Dandan Zhu, Shimin Wang, Wenpeng Mai, Shujun Ming, Jian Chen, Tao Li
Summary: The study developed a green synthesis method to prepare porous organic polymers and designed efficient catalysts for the fixation of CO2 into cyclic carbonates. This provided an effective strategy for addressing the key challenge of CO2 transformation.
Review
Chemistry, Inorganic & Nuclear
Marina M. Seitkalieva, Dmitriy E. Samoylenko, Kristina A. Lotsman, Konstantin S. Rodygin, Valentine P. Ananikov
Summary: The development of metal nanoparticle chemistry in ionic liquids has made a significant impact on fields such as catalysis, energy research, nanotechnology, and materials science. Various methods for producing metal nanoparticles in ILs are highlighted, with a focus on catalytic activity in different reactions.
COORDINATION CHEMISTRY REVIEWS
(2021)
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, Physical
Alessandro Belle, Kohei Kusada, Hiroshi Kitagawa, Alvise Perosa, Lidia Castoldi, Daniele Polidoro, Maurizio Selva
Summary: The new C-supported bimetallic Ru-WOx catalysts showed high efficiency and stability in the liquid-phase hydrogenolysis of aqueous glycerol into 1,2-propanediol, with high selectivity towards the desired product.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Daniele Polidoro, Alvise Perosa, Elena Barbaro, Matteo Feltracco, Elena Argiriadis, Maurizio Selva
Summary: A multiphase system composed of two immiscible liquids and a catalyst was designed and investigated for the chemoselective catalytic hydrogenation of biobased sugars and amino/amido-sugars. The study showed that this method can improve product isolation and catalyst recycling, as well as prevent metal contamination.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Simone Cailotto, Daniele Massari, Matteo Gigli, Carlotta Campalani, Massimo Bonini, Shujie You, Alberto Vomiero, Maurizio Selva, Alvise Perosa, Claudia Crestini
Summary: In this study, beer byproducts were transformed into carbon dots using a hydrothermal approach. The prepared carbon dots were found to have high N-doping and exhibited optical properties. The composite hydrogel formed by entrapping the carbon dots showed efficient dye removal ability.
Article
Chemistry, Physical
Nicola Bragato, Alvise Perosa, Maurizio Selva, Giulia Fiorani
Summary: A series of dihydroxybenzene-derived ILs were synthesized in a halide-free, eco-friendly manner and fully characterized. The most active catalyst for CO2 insertion into terminal epoxides to synthesize cyclic organic carbonates (COCs) was found to be methyltrioctylammonium hydroquinolate, [N-1888][HYD], under the proposed optimized conditions ([N-1888][HYD] 10% mol, T=120 degrees C, t=6 h, p(0)(CO2)=2.0 MPa, 12 examples, conversion >99%, yield up to 98%). Interestingly, [N-1888][HYD] also showed activity as a catalyst for CO2 insertion reactions with cyclohexene oxide (CHO), resulting in the formation of both COC and polycarbonate products. It is suggested that the catalytically active species for p(0)(CO2)>= 1.0 MPa is the hemicarbonate derivative of the hydroquinolate anion, which acts through an unusual hemicarbonate-alkoxide pathway for epoxide ring opening.
Article
Chemistry, Physical
Daniele Polidoro, Daily Rodriguez-Padron, Alvise Perosa, Rafael Luque, Maurizio Selva
Summary: Chitin, a renewable carbon and nitrogen source, is the second most abundant biopolymer on Earth after cellulose. This study successfully prepared chitin-derived N-doped carbonaceous materials functionalized with palladium metal nanoparticles. The physicochemical properties of these nanocomposites were investigated using a multi-technique approach, and their catalytic activity in reductive amination reactions was explored. Specifically, a biomass-derived platform molecule, furfural, was transformed into valuable bi-cyclic compounds under continuous flow conditions.
Article
Chemistry, Multidisciplinary
Daniele Polidoro, Irina Elena Mihai, Alvise Perosa, Maurizio Selva
Summary: Various multiphase systems consisting of immiscible liquid water, a hydrocarbon, and an ionic liquid were studied for the hydrogenation/hydrolysis of 5-hydroxymethylfurfural. A liquid triphase system composed of water, isooctane, and methyltrioctylammonium chloride achieved excellent selectivity control with high yields of the desired product. By separating the reagents and catalyst in different phases, the catalyst could be effectively recycled and reused multiple times without any loss of activity or selectivity.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Physical
Carlotta Campalani, Guillaume Petit, Jean-Christophe M. Monbaliu, Maurizio Selva, Alvise Perosa
Summary: Bass-CDs, synthesized from fishery waste, were used as a cheap and readily available photocatalyst in combination with oxygen and UV light for the efficient degradation of azo dyes. Both batch and continuous flow conditions were studied, and all the azo dyes were fully degraded, highlighting the suitability of bass-CDs for wastewater decontamination.
Article
Chemistry, Applied
Carlotta Campalani, Nicola Bragato, Andrea Morandini, Maurizio Selva, Giulia Fiorani, Alvise Perosa
Summary: In this study, carbon dots (CDs) were used as green metal-free sensitizers in photoinduced atom transfer radical polymerizations (ATRP). Cheap and easily affordable CDs made from citric acid and diethylenetriamine were used to produce polymethacrylate (poly-METAC) under both ultraviolet (UV, lambda = 365 nm) and visible light. Different solvent systems were tested, and a CuII complex was used as catalyst. The polymerization resulted in a polymer with 89% conversion and narrow dispersity (1.4) under the best conditions. The constant concentration of radicals and controlled mechanism of the polymerization were further confirmed through first order kinetics and on-off experiments.
Article
Chemistry, Multidisciplinary
Davide Rigo, Daniele Polidoro, Lorenzo Marcuzzo, Alvise Perosa, Maurizio Selva
Summary: Isopropenyl acetate (iPAc) can convert refined and crude glycerol (CG) into valuable products, such as allyl acetate, triacetin (TA), and acetal acetates, under continuous-flow conditions. This study presents two novel tandem catalytic protocols that achieve high yields of these products by using a combination of innocuous compounds with different roles. The importance of this research lies in providing a green and efficient method for the chemical upgrading of glycerol into valuable products, and improving the yields by optimizing process variables and catalyst selection.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Physical
Abdullah Hamadamin, Valentina Benazzi, Carlotta Campalani, Luca Quattri, Davide Ravelli, Faiq Hussain, Alvise Perosa, Maurizio Selva, Stefano Protti
Summary: Amorphous nitrogen-doped carbon dots (a-N-CDs) were synthesized via hydrothermal conditions using citric acid and diethylenetriamine (DETA) as carbon and nitrogen sources, respectively. These materials exhibit strong absorption in the visible light region and have been successfully used as photoredox catalysts under violet LED irradiation for the 1,2-difunctionalization of olefins through an atom transfer radical addition (ATRA) process. The reported approach offers a metal-free and aqueous medium synthesis route, highlighting the potential applications of these bio-derived carbon materials in organic synthesis.
Article
Chemistry, Multidisciplinary
Daniele Polidoro, Giancarmelo Stamilla, Matteo Feltracco, Andrea Gambaro, Alvise Perosa, Maurizio Selva
Summary: A single-step protocol for hydrolytic hydrogenation of microcrystalline cellulose into sorbitol was developed using commercial carbon-supported Ru as a catalyst, with gaseous CO2 as an acid source and molecular hydrogen as a reductant. By adjusting reaction parameters, such as temperature, time, and pressure, cellulose conversion of 81% was achieved at 220°C in 18 hours under 30 and 40 bar of H2 and CO2, respectively.
Article
Chemistry, Multidisciplinary
Nicola Bragato, Alvise Perosa, Maurizio Selva, Giulia Fiorani, Roberto Calmanti
Summary: In this study, the syntheses, characterisation, properties comparison, and applications of molybdate and polyoxomolybdate ionic liquids as bifunctional catalysts for CO2 insertion into epoxides were described. The synthetic methods relied on anion exchange and acid-base reactions, including a novel route for the synthesis of molybdate ionic liquids using a halide-free organic precursor. The investigations showed that tetrabutylammonium molybdate could serve as an efficient catalyst for the production of hexane carbonate from 1,2-epoxyhexane under solventless and halide-free conditions.
Review
Chemistry, Multidisciplinary
Giulia Fiorani, Alvise Perosa, Maurizio Selva
Summary: This review provides a comprehensive analysis of the reactions and applications of various organic carbonates and enol esters for the functionalization and upgrading of renewable compounds. Five sections cover the synthetic methods of organic carbonates, their reactions as alkylating, carboxylating, and acylating agents, and their use as solvents. The review also discusses the pros and cons of different methods and suggests areas for future research and analysis.
Article
Chemistry, Physical
Daniele Polidoro, Daniel Ballesteros-Plata, Alvise Perosa, Enrique Rodriguez-Castellon, Daily Rodriguez-Padron, Maurizio Selva
Summary: A series of catalysts based on non-noble metal nanoparticles supported on chitin-derived N-doped carbons were prepared through a one-step protocol in the presence of EDTA as a ligand. The synthesized materials were tested in the catalytic oxidation of alcohols to aldehydes and ketones, and Mo-N/C materials exhibited the best performance.
CATALYSIS SCIENCE & TECHNOLOGY
(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)
