Article
Multidisciplinary Sciences
Zahra Moradi, Arash Ghorbani-Choghamarani
Summary: A new type of mesoporous material based on KIT-6 has been introduced in this study, which combines magnetic Fe3O4 nanoparticles and mesoporous silica KIT-6 to obtain magnetic mesoporous MNPs. This magnetic mesoporous catalyst has been successfully applied in various carbon-carbon cross-coupling reactions and characterized by different techniques.
SCIENTIFIC REPORTS
(2021)
Article
Green & Sustainable Science & Technology
Alberto Lopez-Magano, Ruben Mas-Balleste, Jose Aleman
Summary: The study demonstrated the stable coordination of palladium centers by the phenanthroline unit in Phen-COF, leading to enhanced catalytic activities and recyclability. The concept of isolating and immobilizing catalytic sites in Pd@Phen-COF significantly improved catalytic outputs compared to analogous molecular catalysts, particularly in C-C cross-coupling reactions.
ADVANCED SUSTAINABLE SYSTEMS
(2022)
Article
Chemistry, Multidisciplinary
Leila Mohammadi, Mojtaba Hosseinifard, Mohammad Reza Vaezi
Summary: A highly efficient and reusable catalyst was prepared by modifying UiO-66-NH2 metal-organic frameworks with nitrogen-rich organic ligands, and used for the preparation of UiO66-NH2@cyanuric chloride@2-aminopyrimidine/PdNPs. The modulation of the microenvironment of the palladium NPs by the modified catalyst resulted in high catalytic efficiency. Various techniques were used to characterize UiO-66-NH2@cyanuric chloride@2-aminopyrimidine/PdNPs, and it showed successful preparation. The proposed catalyst exhibited improved catalytic performance and high recyclability.
Article
Chemistry, Multidisciplinary
Leila Mohammadi, Mojtaba Hosseinifard, Mohammad Reza Vaezi
Summary: We prepared a highly efficient and reusable catalyst by modifying UiO-66-NH2 metal-organic frameworks (MOFs) step-by-step with nitrogen-rich organic ligands and used it as a support for the preparation of UiO-66-NH2@cyanuric chloride@2-aminopyrimidine/PdNPs. The catalytic performance results indicate high efficiency of the modulation of the microenvironment of the palladium nanoparticles. The addition of N-rich organic ligands through postsynthesis modification caused a unique structure of the final composite, favoring the progress of the C-C coupling reaction. Various techniques were used to characterize the prepared catalyst, and three C-C coupling reactions were successfully promoted using it.
Article
Chemistry, Physical
Masoumeh Beiranvand, Davood Habibi
Summary: In this study, the mesoporous silica SBA-15 (SBA) was modified by a tetra-urea (TU) ligand to prepare the SBA@TU@Pd(0) nano-structured reduced catalyst. The catalytic activity of SBA@TU@Pd(0) was successfully studied in the Mizoroki-Heck and Suzuki-Miyaura cross-coupling reactions, showing short reaction times and high yields. The non-reduced nano-catalyst SBA@TU@Pd(II) also exhibited similar reaction yields but longer reaction times.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Multidisciplinary
Ren-Xiao Liang, Jian-Fei Chen, Ying-Ying Huang, Ya-Ping Yu, Han-Yue Zhang, Yu-Feng Song, Gavin Chit Tsui, Yi-Xia Jia
Summary: Highly enantioselective palladium-catalyzed dearomative reductive Heck reaction and domino Heck-Suzuki reaction of 2-CF3-indoles have been developed. A variety of indolines bearing different stereocenters can be obtained using different reaction systems.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Abbas Akdeniz, Nevin Turan
Summary: Cross-coupling reactions are powerful tools for carbon-carbon bond formation in organic synthesis. Palladium-catalyzed cross-coupling reactions have attracted significant attention. Two new Schiff base-Pd(II) complexes were synthesized and characterized. The complexes were applied in Suzuki-Miyaura and Mizoroki-Heck cross-coupling reactions, showing high yields. Electron-donating and electron-withdrawing substituents on aryl halides can produce coupling products in perfect yield in the presence of these complexes.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Inorganic & Nuclear
Minoo Khodamorady, Mohammad Jafarzadeh, Kiumars Bahrami
Summary: Nowadays, the development and use of heterogeneous nanocatalysts is of great importance and attractiveness due to the shift towards greener conditions. In this study, the highly sustainable, renewable, and effective BNPs@SiO2(CH2)3-TAPC-O-(CH2)2NH2-Pd (0) heterogeneous nano-catalyst was employed for C-C cross coupling reactions and removal of cationic (Methylen Blue) and anionic (Methyl Orange) organic dyes from aqueous medium. The results showed that the nano-catalyst exhibited high activity, low cost, excellent stability, suitable synthetic conditions, good turnover numbers, low palladium leaching, and recoverability for multiple cycles.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Polymer Science
Ameneh Ahmadi, Tahereh Sedaghat, Roya Azadi
Summary: In this study, a Palladium-based magnetic nanocomposite was synthesized and utilized as a catalyst for Suzuki coupling and Heck-Mizoroki coupling reactions, demonstrating efficient catalytic activity and recyclability.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Yanfang Zhu, Guiyang Xu, Milad Kazemnejadi
Summary: The study successfully achieved competitive asymmetrical C-C* C-C, C-C* C-O, C-C* C-N, and O-C* C-N cross-coupling reactions through a one-pot strategy using a new ionic liquid as solvent, base, and ligand simultaneously. The reactions were performed with high selectivity under mild conditions, based on differences in competitive kinetics and differences in aryl halides' kinetics.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Leila Mohammadi, Reza Taghavi, Mojtaba Hosseinifard, Mohammad Reza Vaezi, Sadegh Rostamnia
Summary: UiO-66-NH2 was prepared and functionalized with a beta-cyclodextrin organic compound using a post-synthesis modification method. The resulting composite was used as a support for Pd NPs heterogenization. Characterization techniques such as FT-IR, XRD, SEM, TEM, EDS, and elemental mapping confirmed the successful preparation of UiO-66-NH2@beta-CD/Pd-NPs. The catalyst exhibited improved catalytic performance in C-C coupling reactions and could be recycled up to 6 times.
Article
Chemistry, Multidisciplinary
Bisma Rasool, Irshad Ahmad Zargar, Nazar Hussain, Debaraj Mukherjee
Summary: A convenient method for synthesizing C1-C2 interlinked disaccharides from easily accessible iodo-glycals and unsubstituted glycals is reported. Ester-protected donors and ether-protected acceptors reacted under Pd-Ag catalysis, leading to C-disaccharides with C-3 vinyl ethers. Ring opening by Lewis acid yielded pi-extended conjugated orthogonally protected chiral ketones. Benzyl deprotection and reduction of double bonds resulted in a fully saturated disaccharide stable towards acid hydrolysis.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Zahid Nawaz, Nevin Gurbuz, Muhammad Naveed Zafar, Namik Ozdemir, Uzma Habib, Kalsoom Jan, Ismail Ozdemir
Summary: The research aims to synthesize homogeneous catalysts by starting from novel precursors to form N-heterocyclic carbene (NHC) ligands, and subsequently synthesizing Pd(NHC)-PEPPSI type complexes. The structure of all synthesized ligands and complexes was confirmed using various spectroscopic techniques, with some compounds confirmed by X-ray. These complexes were found to be significantly active as catalysts in the C-C cross-coupling reaction.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Multidisciplinary
Fariba Jafari, Arash Ghorbani-Choghamarani, Neda Hasanzadeh
Summary: Boehmite nanoparticles were synthesized in aqueous solution by combining Al(NO3)3·9H2O and NaOH, which were then converted to Pd-Gu@BOEH nanocatalyst for chemoselective C-C bond formation reactions. The catalyst and products were characterized, and the recycled catalyst exhibited good stability during reaction processes.
RESEARCH ON CHEMICAL INTERMEDIATES
(2021)
Article
Chemistry, Applied
Leila Rahimi, Yagoub Mansoori, Ayat Nuri, Behzad Koohi-Zargar, Dolores Esquivel
Summary: The magnetic mesoporous silica composite was prepared by embedding magnetite nanoparticles between SBA-15 channels and complexing with Pd(II). The supported Pd(II) catalyst showed high activity in Heck and Hiyama reactions, with better results observed for aryl bromides and iodides, and exhibited noticeable stability and reusability.
APPLIED ORGANOMETALLIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Snehasis Mishra, Kaustav Das, Sujan Chatterjee, Panchanan Sahoo, Sudip Kundu, Mrinal Pal, Asim Bhaumik, Chandan Kumar Ghosh
Summary: Carbon dots (CQDs) with tunable fluorescence emission and excitation, high water solubility, good photostability, and biocompatibility are considered promising for tumor theranostics. This study focused on the synthesis and characterization of highly fluorescent CQDs from orange juice. CQD/Ag heterostructures were also synthesized and their photostability and characterization were investigated. Cellular toxicity measurements were conducted to select the superior CQD/Ag heterostructure in the human colorectal carcinoma (HCT 116) cell line, along with the observation of cell death signaling through the ROS-dependent mitochondrial-mediated pathway.
Article
Nanoscience & Nanotechnology
Sayantan Chongdar, Udayan Mondal, Tonmoy Chakraborty, Priyabrata Banerjee, Asim Bhaumik
Summary: A water-stable, luminescent Ni(II)-based MOF was synthesized and used for rapid monitoring of mutagenic explosive TNP. The MOF showed an ultralow detection limit of 66.43 ppb, which was governed by PETRET-ICT and non-covalent interactions. Additionally, a recyclable MOF@cotton-swab detection kit was fabricated to enhance the on-field viability of the probe.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Santu Ruidas, Avik Chowdhury, Anirban Ghosh, Avik Ghosh, Sujan Mondal, A. D. Dinga Wonanke, Matthew Addicoat, Abhijit Kumar Das, Arindam Modak, Asim Bhaumik
Summary: A new porous crystalline COF, C6-TRZ-TPA COF, has been synthesized via extended Schiff base condensation. This COF exhibits high surface area and pore volume, making it an efficient photocatalyst for wastewater treatment and an excellent adsorbent for iodine capture.
Article
Chemistry, Multidisciplinary
Rupak Chatterjee, Avik Chowdhury, Sudip Bhattacharjee, Rajaram Bal, Asim Bhaumik
Summary: The surface of mesoporous silica MCM-41 was modified by phosphate to efficiently incorporate Ti(IV) in the silica framework, resulting in highly ordered 2D hexagonal mesoporous material STP-1. STP-1 exhibited a large specific surface area and pore volume, making it a suitable catalyst for the selective oxidation of organics under mild liquid phase conditions.
CHEMISTRY-SWITZERLAND
(2023)
Article
Nanoscience & Nanotechnology
Debabrata Chakraborty, Rupak Chatterjee, Saptarsi Mondal, Sabuj Kanti Das, Vipin Amoli, Minhaeng Cho, Asim Bhaumik
Summary: This study successfully synthesized nitrogen-rich porous organic polymers (POPs) with high adsorption capacity and selectivity under high pressure, high temperature, and humidity conditions, which show great potential for precombustion CO2 capture and H-2 purification.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Electrochemistry
Sabuj Kanti Das, Avik Chowdhury, Koushik Bhunia, Anirban Ghosh, Debabrata Chakraborty, Manisha Das, Utpal Kayal, Arindam Modak, Debabrata Pradhan, Asim Bhaumik
Summary: Robust and sustainable bifunctional electrocatalysts, Ni-Por-Py and Cu-Por-Py, consisting of transition metal coordinated porphyrin building blocks in pi-conjugated polymer skeletons, have been developed for efficient hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) under alkaline conditions. The excellent electrocatalytic activity of these catalysts is attributed to their high specific surface areas and microporosity, which facilitate electron transfer processes.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Inorganic & Nuclear
Rima Biswas, Debojit Ghosh, Samarpita Das, Sauvik Chatterjee, Samanka Narayan Bhaduri, Asim Bhaumik, Papu Biswas
Summary: Copper immobilized 2D-hexagonally ordered mesoporous silica material (CuMS) has been synthesized as an electrochemical and colorimetric dual-technique-based sensing platform for sulfite detection. The immobilization of copper on silica was achieved through a ligand. The synthesized CuMS material showed promising electrocatalytic activity and high sensitivity for sulfite oxidation, as well as excellent colorimetric detection ability.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Samanka Narayan Bhaduri, Debojit Ghosh, Rupak Chatterjee, Samarpita Das, Indrani Pramanick, Asim Bhaumik, Papu Biswas
Summary: A covalent organic polymer (COP) based on ethylene glycol-linked tetraphenylporphyrin has been developed. The Ni(II)-incorporated EG-POR material displayed excellent activity in both methanol oxidation reaction (MOR) and oxygen evolution reaction (OER) in an alkaline medium. The material showed high stability and has the potential to be used as a non-noble metal MOR catalyst.
INORGANIC CHEMISTRY
(2023)
Review
Chemistry, Multidisciplinary
Priyanka Kalita, Ratul Paul, Ankita Boruah, Duy Quang Dao, Asim Bhaumik, John Mondal
Summary: Chemical warfare agents, such as sulfur mustards, have been classified as fatal weapons of mass destruction due to their toxicity and deadly consequences. The detection and detoxification of these dangerous chemicals are critical for protection, sparking scientific interest globally. Various photoresponsive porous materials have been found highly effective for the detoxification of sulfur mustards.
Article
Chemistry, Physical
Dip Kumar Nandi, Jhumur Seth, Pekham Chakrabortty, Swarbhanu Ghosh, Avik Chowdhury, Asim Bhaumik, Sk Manirul Islam
Summary: In this study, a composite catalyst consisting of a triazine based porous organic polymer and nickel nanoparticles was synthesized, and it showed excellent photocatalytic activity for the reduction of CO2 to methanol. The composite catalyst exhibited high surface area and low band gap, and demonstrated high catalytic efficiency and recyclability, indicating great potential for renewable carbon source methanol synthesis.
Article
Chemistry, Physical
Sayantan Chongdar, Anirban Ghosh, Rajaram Bal, Asim Bhaumik
Summary: In this study, microwave-assisted rapid synthesis of metal-organic framework material ZIF-9 was reported, which exhibits high current density and faradaic efficiency in the electrochemical oxidation of alcohols, showing potential industrial applications.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Riddhi Mitra, Bhabani Malakar, Asim Bhaumik
Summary: This study presents a method for synthesizing 5-HMF from biomass resources, using catalysts without templates and organic molecules, achieving efficient conversion of fructose to 5-HMF.
Article
Chemistry, Physical
Loknath Thapa, Asim Bhaumik, Swastik Mondal, C. Retna Raj
Summary: This study demonstrates a ternary heterostructure electrocatalyst based on NixSy, MoS2, and MoC for the efficient oxidation of 5-hydroxymethylfurfural (HMF). The catalyst exhibits 100% faradaic efficiency and high FDCA production rate, and shows good stability and reusability.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Materials Science, Biomaterials
Samanka Narayan Bhaduri, Debojit Ghosh, Sauvik Chatterjee, Rima Biswas, Asim Bhaumik, Papu Biswas
Summary: This work presents the fabrication of a Fe(III)-incorporated porphyrin-based conjugated organic polymer nanozyme for efficient detection of glucose and hydrogen peroxide. The material exhibits high chemical and thermal stability and can also act as an H2O2 sensor.
JOURNAL OF MATERIALS CHEMISTRY B
(2023)
Article
Materials Science, Biomaterials
Samanka Narayan Bhaduri, Debojit Ghosh, Sauvik Chatterjee, Rima Biswas, Asim Bhaumik, Papu Biswas
Summary: In this study, an Fe(III)-incorporated porphyrin-based conjugated organic polymer was synthesized as a nanozyme for the efficient detection of glucose and hydrogen peroxide. The nanozyme exhibited high chemical and thermal stability and showed promising results in glucose detection with a low detection limit and a wide linear range. It also functioned as an H2O2 sensor with high sensitivity.
JOURNAL OF MATERIALS CHEMISTRY B
(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)