Article
Biochemistry & Molecular Biology
Ting He, Cheng-Bin Hong, Peng-Chong Jiao, Heng Xiang, Yan Zhang, Hua-Qiang Cai, Shuang-Long Wang, Guo-Hong Tao
Summary: The study systematically examined the Bronsted acidity of [AAE]X PILs in green solvents and found that the cationic structures had little effect on the acidity, while the anions had no effect. Four different methods were used to determine the acidic strength, including the overlapping indicator method, potential titration method, Hammett method, and DFT method. These methods were reliable for assessing the acidity of [AAE]X.
Article
Chemistry, Physical
Diego Guzman-Lucero, Javier Guzman-Pantoja, Heriberto Diaz Velazquez, Natalya Likhanova, Mercedes Bazaldua-Dominguez, Araceli Vega-Paz, Rafael Martinez-Palou
Summary: Research focuses on developing ionic liquids as catalysts for the isobutane/butene reaction to achieve a more efficient, sustainable, and environmentally friendly process. These compounds can mitigate the environmental issues associated with inorganic acids used as catalysts on an industrial scale for many years.
MOLECULAR CATALYSIS
(2021)
Article
Chemistry, Physical
Bela Urban, Gabor Szalontai, Mate Papp, Csaba Feher, Attila C. Benyei, Rita Skoda-Foldes
Summary: Numerous organic reactions catalyzed by the ionic liquid product of chlorosulfonation of 1-methylimidazole have been reported recently. Controversial assumptions on the real structure of the catalyst have emerged, but it has now been confirmed to be 1-methylimidazolium chlorosulfate. This structure was verified through X-ray crystallography and NMR spectroscopy, with experiments supporting rapid hydrolysis in the presence of water traces.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Multidisciplinary
Swantje Lerch, Thomas Strassner
Summary: Tunable aryl alkyl ionic liquids (TAAILs) based on the imidazolium cation were first reported in 2009. Since then, a series of TAAILs with different properties due to the electron-donating or -withdrawing effect of the substituents at the aryl ring has been developed. The physical properties (melting point, thermal decomposition, viscosity, electro-chemical window) of these ILs are reported according to their structure.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Physical
M. A. Deyab, M. I. Nessim, Abdelfattah Haikal, Q. Mohsen, N. A. Khalil
Summary: This paper describes the corrosion inhibiting action of four new imidazolium-derived ionic liquids (ILs). Various analytical techniques were used to confirm their molecular formula and characterize their adsorption behavior on a steel substrate. Results showed that these ILs exhibited effective corrosion suppression and adsorbed onto the steel surface through physi-chemisorption. SEM/EDX and FTIR analysis further supported the adsorption process of the ILs.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Materials Science, Multidisciplinary
Qikai Shen, Peipei Li, Weiming Chen, Hongqiang Jin, Jia Yu, Lei Zhu, Zhucheng Yang, Runqing Zhao, Lirong Zheng, Weiguo Song, Changyan Cao
Summary: Ionic liquids (ILs) have the advantages of being low cost, eco-friendly, abundant in heteroatoms, and having excellent solubility and coordination abilities with metal ions, making them suitable precursors for fabricating metal single-atom catalysts (SACs). In this study, various metal single atoms anchored on ultrathin N-doped nanosheets were prepared using ILs and g-C3N4 nanosheets as templates. The Cu-1/NC-1000 catalyst exhibited the highest catalytic activity for benzene oxidation to phenol, with a high benzene conversion rate of 82%, phenol selectivity of 96%, and excellent recyclability.
SCIENCE CHINA-MATERIALS
(2022)
Editorial Material
Chemistry, Physical
D. Bradley G. Williams, Iurii Bodachivskyi
Summary: This comment points out misinterpreted data related to the reported synthesis of Bronsted acidic ionic liquids for the dissolution of chitosan. Through various analyses, it is demonstrated that such ionic liquids are unlikely to be produced.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Multidisciplinary
Suman Kusuma, Dipak B. Bawiskar, Chob Singh, Pratheep Panneerselvam, Pradipta Sinha, Akshaya K. Samal, Arvind H. Jadhav
Summary: In this study, a novel approach for the synthesis of benzimidazole and its derivatives using engineered MgO supported on dendritic fibrous nano silica (MgO@DFNS) as a sustainable heterogeneous catalyst was reported. The catalyst exhibited desired characteristics and produced clean reactions with excellent yields in a shorter time. The applicability of the catalyst was demonstrated through the testing of reaction parameters and the reaction of different substrates. Additionally, the catalyst showed recyclability and maintained stable activity for multiple cycles.
Article
Optics
Hiroshi Yamagishi, Keitaro Fujita, Junnosuke Miyagawa, Yuya Mikami, Hiroaki Yoshioka, Yuji Oki, Naoki Takada, Soumei Baba, Shimpei Saito, Satoshi Someya, Zhan-Hong Lin, Jer-Shing Huang, Yohei Yamamoto
Summary: A simple methodology is reported to form a self-standing spherical microlaser that is composed fully of liquid and operates steadily even under atmosphere. The droplets are highly robust and work as efficient long-lasting laser oscillators. The lasing wavelength is sensitively shifted when the droplets are subjected to a faint breeze or moisture.
LASER & PHOTONICS REVIEWS
(2023)
Article
Chemistry, Physical
Dawid Lisicki, Dorota Talik, Beata Orlinska
Summary: Nicotinic acid is a commonly used additive in feed, breakfast cereals, and beverages. The current manufacturing process is not environmentally friendly, so alternative methods need to be explored. This paper presents research on the selective oxidation of 3-picoline to produce nicotinic acid using bromide organic salts as catalysts in acetic acid solution.
Article
Chemistry, Physical
Mahmoud Nasrollahzadeh, Zahra Nezafat, Fariborz Momenbeik, Yasin Orooji
Summary: 5-Hydroxymethylfurfural (5-HMF) has been successfully synthesized using a polystyrene-supported catalyst, which was characterized and showed good performance stability after recycling for 4 cycles.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Yangfeng Xia, Changbo Lu, Yaohui Wang, Jinmao Chen, Wanli Xu, Gaojun An, Yanqiang Zhang
Summary: Bronsted ionic liquids (BILs) were designed and applied to catalyze the intramolecular cyclization of ketazines to synthesize 2-pyrazoline derivatives. The optimal conditions resulted in high conversion rate and selectivity of the reaction. The steric hindrance of the R group in ketazines was found to be a significant factor affecting the cyclization activities. Density functional theory calculations provided insights into the catalytic mechanism of the ionic liquids.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Organic
Yaqing Ye, Yuanyuan Yue, Xiaohui Guo, Junli Chao, Yan Yang, Chunying Sun, Qingzhang Lv, Jianming Liu
Summary: The copper-catalyzed aerobic oxidation enables the selective and efficient transformation of N-pyridylindole for the construction of 11H-pyrido[2,1-b]quinazolin-11-ones. The mechanism involves single-electron-transfer oxidation of N-pyridylindole, capture of molecular oxygen, and extrusion of carbon monoxide to deliver the desired products.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Biochemistry & Molecular Biology
Yuki Shigenobu, Aoi Nakashima, Jun-ichi Kadokawa
Summary: In this study, chitin benzoate stearates with thermoplasticity were synthesized through acylation reaction in an ionic liquid. The introduction of benzoyl and stearoyl groups resulted in the formation of products with regular crystalline structures, which exhibited melting points and could be processed into films during melt-pressing.
Article
Chemistry, Multidisciplinary
Pavankumar Prabhala, Suraj M. Sutar, Rajesh G. Kalkhambkar, Yeon T. Jeong
Summary: An efficient and facile method for the synthesis of alpha-arylated N-heteroarenes using Imidazolium based ionic liquids as acid promoter and solvent under aerobic conditions was developed. This methodology successfully provided various electron-rich and electron-deficient arylated N-heteroarenes in good to excellent yields without the use of metals or peroxides. It was also used as a key step in the total synthesis of Menisporphine & Daurioxoisoporphine C, alkaloids of the oxoisoaporphine class.
Article
Chemistry, Multidisciplinary
Wei Hui, Xue-Mei He, Xin-Yi Xu, Yue-Miao Chen, Yan Zhou, Zhang-Min Li, Liqi Zhang, Duan-Jian Tao
JOURNAL OF CO2 UTILIZATION
(2020)
Article
Engineering, Chemical
Duan-Jian Tao, Feng Qu, Zhang-Min Li, Yan Zhou
Summary: Copper-based ternary deep eutectic solvents prepared by mixing imidazolium hydrochloride with CuCl and ZnCl2 exhibit high CO absorption capacity at high temperatures, surpassing other absorbents. These solvents can facilitate the reactive absorption of CO, allowing for effortless aminocarbonylation reactions at ambient pressure and yielding benzamides in 70-97% yields. This discovery offers a new approach to designing advanced solvents for efficient CO capture at high temperatures.
Article
Chemistry, Physical
Yanhong Chao, Baichuan Tang, Jing Luo, Peiwen Wu, Duanjian Tao, Honghong Chang, Xiaozhong Chu, Yan Huang, Hongping Li, Wenshuai Zhu
Summary: The hierarchical porous boron nitride nanosheets with boron vacancies (Bv-BNNSs) were synthesized via a one-step ZnCl2-assisted strategy, resulting in controllable tuning of morphological and electronic structures and a specific surface area as high as 1104 m(2)/g. The sorption capacity was boosted by 38% due to the pi-pi interaction mechanism. DFT calculations verified the enhanced interaction energy between Bv-BNNSs and tetracycline, indicating great potential in practical wastewater treatment.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Analytical
Song Liu, Lingli Bu, Yuming Zhang, Jiangyu Yan, Ling Li, Guorui Li, Zhibin Song, Jing Huang
Summary: This study describes two coumarin-quinazolinone conjugates, CQ and MeCQ, which exhibit significantly different behaviors in cellular context due to their different interactions with G-quadruplex (G4) DNA. CQ shows bright fluorescence in living cells while MeCQ is nearly undetectable.
ANALYTICAL CHEMISTRY
(2021)
Article
Engineering, Chemical
Fei-Feng Mao, Yan Zhou, Wenshuai Zhu, Xiao-Yan Sang, Zhang-Min Li, Duan-Jian Tao
Summary: A novel type of guanidinium-based poly(ionic liquid) with nonporosity was designed and prepared, showing high SO2 capacity and selectivity while excluding adsorption of CO2 and N-2. The nonporous poly(ionic liquids) demonstrated excellent performance in removing SO2 from flue gas.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Engineering, Environmental
Xu Liu, Yan Zhou, Chao-Li Wang, Yong Liu, Duan-Jian Tao
Summary: N-OMCs synthesized through a solvent-free self-assembly method exhibit excellent performance in CO2 capture and oxygen reduction reaction, with high nitrogen content and superior properties.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Wen-Qiang Gong, Xian-Lu Wu, Zhang-Min Li, Yan Zhou, Wenshuai Zhu, Duan-Jian Tao
Summary: The study prepared a kind of sulfate functionalized ILs impregnated hexagonal boron nitride nanosheets for capture of low-concentration SO2, showing high uptake, selectivity, and fast adsorption rate. The material demonstrated excellent separation performance and reversibility in dynamic column breakthrough tests for removing 2000 ppm SO2 in a mixture of SO2/CO2/N-2.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Guorui Li, Yi Yang, Yaya Zhang, Peiling Huang, Jiangyu Yan, Zhibin Song, Quan Yuan, Jing Huang
Summary: In this study, we propose a dual biomarker cascade-activated prodrug strategy based on high levels of reactive oxygen species (ROS) and tyrosinase (TYR) in melanoma cells to overcome the off-target effect in targeted prodrugs. The prodrug, CQB, can be converted to the final active reagent CQQ after activation by endogenous ROS and subsequent TYR, leading to selective suppression of melanoma growth and disruption of cellular redox balance.
Article
Chemistry, Analytical
Jing Huang, Haojun Yao, Song Liu, Zhiming Xing, Yongxiang Miao, Zhibin Song, Guorui Li
Summary: Small-molecule-based fluorescent chemosensors are powerful tools in analytical chemistry, but they often suffer from aggregation-caused quenching (ACQ) in water. In this study, we proposed that sulfur substitution on a molecule could lead to an evolved ACQ-DIE probe. By modifying a G-quadruplex (G4) ligand to its thionation version, we obtained a probe called CTQ, which exhibited improved fluorescence performance and selective binding to G4 structures. CTQ has the potential to be used as a probe for accurate analysis of G4-related assays, particularly for distinguishing virus variants.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Applied
Yongxiang Miao, Zhiming Xing, Yang Fu, Cheng Zhong, Haiyang Huang, Jing Huang, Yiyuan Peng, Zhibin Song
Summary: Developing small organic fluorophores with full color-tunable luminescence through easy synthesis is crucial for various applications. In this study, novel quinazolinone based BF2 complexes (2a-2g) were designed and synthesized. By modifying the quinazolinone ligand structure, the synthesized boron difluoride dyes exhibited fluorescence in the complete visible spectrum range (approximately 450-750 nm) in both solution and solid-state with high quantum yield. The effect of three electron donating substituents, namely methyl, methoxy, and N,N-dimethylamino group, in the quinazolinone core on the photophysical properties of BF2 compounds was discussed. The position of the substituent in quinazolinone had some impact on the emission efficiency, but little influence on the absorption and emission of BF2 compounds. Finally, compound 2g showed good cell compatibility and the ability for live cell imaging.
Article
Chemistry, Organic
Wei Chen, Jingjun Fang, Jian Huang, Qin Yang, Zhibin Song, Qiuping Ding, Hongming Wang, Yiyuan Peng
Summary: An efficient method for direct regioselective acylation of quinazolines under metal-free conditions was developed. The reaction showed good to excellent yields, excellent functional group tolerance and site selectivity. The mechanism of the reaction was investigated using multiple analytical strategies.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2023)
Article
Chemistry, Physical
Duan-Jian Tao, Xin Zhao, Yanxin Wang, Xixi Liu, Hong -Ping Li, Zhang-Min Li, Yan Zhou, Ziliang Yuan, Zehui Zhang
Summary: A superior carbocatalyst, ultrahigh N-doped graphene, was prepared using a self-sacrificial templating method. The catalyst exhibited high activity for the oxidation of bio-based alcohols and terpenes without any additives. The high content of graphitic N and pyridinic N species in the catalyst promoted the generation of active reactants and improved the catalytic performance.
GREEN ENERGY & ENVIRONMENT
(2022)
Article
Chemistry, Multidisciplinary
Yanxin Wang, Kaiyue Yao, Duanjian Tao, Nian Xiang, Wei Wang, Zehui Zhang
Summary: In this study, Al2O3/nitrogen-doped carbon supported cobalt catalysts were prepared and investigated for the hydrodeoxygenation of sulfoxides into sulfides. The catalytic activity of the Co-NC/Al2O3-T catalysts was greatly influenced by the pyrolysis temperature, with Co-NC/Al2O3-500 showing excellent performance comparable to noble metal catalysts. Both the support and metallic cobalt nanoparticles played crucial roles in the catalyst's high activity, and the Co-NC/Al2O3-500 catalyst exhibited good stability after multiple runs.
REACTION CHEMISTRY & ENGINEERING
(2021)
Review
Chemistry, Organic
Zhiming Xing, Wanhui Wu, Yongxiang Miao, Yingqun Tang, Youkang Zhou, Lifang Zheng, Yang Fu, Zhibin Song, Yiyuan Peng
Summary: This article summarizes the applications of quinazolinones in fluorescent probes and biological imaging, focusing on the fluorescent probes based on the HPQ structure and newly developed quinazolinone molecules. It also includes a brief outlook on the future development of quinazolinone-based probes and luminescent materials.
ORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Physical
Duan-Jian Tao, Xin Zhao, Yanxin Wang, Xixi Liu, Hong-Ping Li, Zhang-Min Li, Yan Zhou, Ziliang Yuan, Zehui Zhang
Summary: A superior carbocatalyst ultrahigh N-doped graphene was prepared by a novel self-sacrificial templating method, showing excellent catalytic performance for the oxidation of bio-based alcohols and terpenes without any additives.
GREEN ENERGY & ENVIRONMENT
(2022)
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)
