Article
Chemistry, Multidisciplinary
Papri Sutar, Vasudeva Rao Bakuru, Pooja Yadav, Subhajit Laha, Suresh Babu Kalidindi, Tapas Kumar Maji
Summary: The composite hydrogel of Pd@ZIF-8 and Laponite nanoclay shows enhanced thermal stability and better size-selective catalytic activity compared to pristine ZIF-8, due to the charge-assisted self-assembly.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Johannes Fessler, Kathrin Junge, Matthias Beller
Summary: An efficient and general cascade synthesis of pyrroles from nitroarenes using an acid-tolerant homogeneous iron catalyst is presented. The method involves initial (transfer) hydrogenation using an iron-Tetraphos catalyst and subsequent acid catalysed Paal-Knorr condensation. It shows high functional group tolerance, complementing reactivity, and enhanced chemoselectivity.
Article
Chemistry, Multidisciplinary
Mengting Chen, Meihua Zhang, Xiaoshuang Liu, Yingxin Liu
Summary: This study investigated the synthesis of N-arylhydroxylamines through in-situ hydrogenation using commercial Pt/C catalyst. The results showed that N-phenylhydroxylamine could be efficiently synthesized under specific reaction conditions, and the method also demonstrated good conversion efficiency for different nitroarenes.
Article
Biochemistry & Molecular Biology
Jessica Michalke, Kirill Faust, Thomas Bogl, Stephan Bartling, Nils Rockstroh, Christoph Topf
Summary: In this study, the assembly of a Ce-promoted Ni-based solid composite catalyst for the hydrogenation of nitroarenes was communicated. The catalyst showed advantages such as simple preparation, operational simplicity, and easy separation and recycling.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Engineering, Chemical
Chuang Zhang, Jing-Pei Cao, Xiao-Yan Zhao, Jin-Xuan Xie, Liang Zhao, Wei Jiang, Zi-Meng He, Hou-Luo Cong, Hong-Cun Bai
Summary: A Ni/S950 catalyst was prepared using an ion-exchange method, which exhibited high catalytic activity and excellent selectivity for tetralin production at low temperatures.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Shuai Wang, Feng Li, Yanxiu Liu, Qiang Zhang, Hua Song
Summary: In this study, a series of stable N-doped porous carbon encapsulated Ni nanoparticles were prepared and used for the catalytic transfer hydrogenation of phenol to cyclohexanol. The results showed that nitrogen doping improved the dispersion and catalytic activity of the Ni nanoparticles, and the catalysts exhibited good recyclability.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Organic
Sadhan Dey, Dibyajyoti Panja, Anirban Sau, Seema D. D. Thakur, Sabuj Kundu
Summary: Control transfer hydrogenation of azoarenes to hydrazocompounds is achieved using a reusable cobalt catalyst, with lower amounts of N2H4 • H2O and mild reaction conditions. The method is also effective for the conversion of nitroarenes to amines. Kinetic and Hammett studies provide insights into the mechanism and electronic effects. The catalyst can be recycled up to five times without significant loss of activity.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Engineering, Environmental
Mahsa Niakan, Majid Masteri-Farahani
Summary: A facile and efficient strategy was introduced for growing a dendrimer structure on the surface of magnetic graphene oxide by using thiol-ene click reaction, and the dendrimer-grafted magnetic graphene oxide was utilized as a suitable support for bimetallic Pd-Ni nanoparticles. The prepared nanocomposite was successfully used for the reduction of toxic nitroarenes to aminoarenes in aqueous medium at room temperature, with good to excellent yields.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Zan Zhang, Yuan Liu, Jinfeng Du, Yisen Jiang, Zhaoxu Wang, Ruirui Yun, Baishu Zheng
Summary: In this study, a new type of non-noble metal catalyst was developed using cobalt nanoparticles encapsulated in porous N-doped carbon nanotubes. The catalyst exhibited high efficiency, low cost, and excellent durability, making it suitable for selective hydrogenation reactions of nitro compounds.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Ahmad Afzalinia, Mahdi Mirzaee
Summary: In this study, a highly beneficial and eco-friendly catalytic hydrogenation of NACs was developed using a novel perovskite@MOF composite. The composite showed excellent catalytic capability and promoted the hydrogenation of NACs under mild conditions. Doping the catalyst with transition metal ions further enhanced its catalytic activity. The Co-P@MOF catalyst demonstrated high efficacy in reducing NACs.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Nanoscience & Nanotechnology
Yanxu Ma, Ziyang Shan, Xinzhen Wang, Wannian Zhao, Meng Gao, Kunhua Wang, Liangmin Ning, Xin Liu, Hao Yu
Summary: By functionalizing organic ligands and regulating metal nodes, metal-organic frameworks (MOFs) can be used as catalysts for biomass conversion. In this study, multicomponent nanocatalysts (M-ZrO2/N-C, M = Ni, Fe, Co, Cu) derived from postsynthetic modification of zirconium-organic frameworks were synthesized using Schiff base as a bridge. These nanocatalysts showed excellent catalytic performance in the hydrogenation of methyl levulinate to ?-valerolactone, especially Ni-ZrO2/N-C which exhibited a high conversion rate (99.9%) and selectivity (94.7%). Characterization methods confirmed that metallic nickel activated H2 and the introduction of ZrO2 provided Lewis acid sites, facilitating the esterification process.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Shuo Wang, Weishu Yu, Shengyuan Xu, Kaihang Han, Fagen Wang
Summary: This study presents a new photothermal method for ammonia production over multifunctional Ni/TiO2 catalysts at low temperatures and ambient pressure. The synergy of photocatalysis and thermocatalysis of the catalysts triggers N-2 hydrogenation to ammonia under mild conditions. The physicochemical and optical properties of the catalysts were comprehensively studied to explain the photothermal performance of the reaction.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Physical
Yuqing Chi, Shuyi Zheng, Xiangwen Zhang, Guozhu Li
Summary: Selective hydrogenation of nitroarene to aniline is a key reaction for fine chemical, pharmaceutical, and dye manufacturing. N-doped carbon nanotubes catalysts were prepared and optimized for improved catalytic performance. The catalyst showed high activity, selectivity, and stability for various substrates.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Changzhou Chen, Minghao Zhou, Jianchun Jiang
Summary: A series of carbon nanotube-supported Ni-based catalysts were prepared through a simple impregnation method, showing smaller particle size and better dispersion compared to monometallic Ni/CNT catalyst. The synergistic effect of Ni with Mo led to high activity in hydrogenation of biomass derivatives in aqueous medium. NiMo/CNT bimetallic catalyst exhibited a promotional effect in hydrogenation of furfural to fine chemicals, with potential applications in the food and biomass refining industry.
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Jingwen Tan, Junjie Shao, Yanghao Shi, Wenbiao Zhang, Qingsheng Gao
Summary: Intercalated molybdenum disulfide with dimethylamine as a catalyst shows superior activity and selectivity in electrocatalytic hydrogenation reactions, making it a promising alternative to noble-metal catalysts.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(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)