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Xu XL, Wang NN, Zou YH, Qin X, Wang P, Lu XY, Zhang XY, Sun WY, Lu Y. N, N'-bidentate ligand anchored palladium catalysts on MOFs for efficient Heck reaction. Nat Commun 2024; 15:7273. [PMID: 39179619 PMCID: PMC11344049 DOI: 10.1038/s41467-024-51552-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Accepted: 08/12/2024] [Indexed: 08/26/2024] Open
Abstract
Metal-organic frameworks (MOFs), recognized as advanced catalyst carriers due to their adjustable porous, diverse structure and highly exposed active sites, have earned increasing attention for their potential to address the longevity of catalytic centers. In this manuscript, we have devised and synthesized a multifunctional amino-pyridine benzoic acid (APBA) ligand to replace the modulator ligand of the MOF-808 and disperse the palladium catalytic centers atomically on the MOF-APBA. The resulting single-site catalytic system, Pd@MOF-APBA, demonstrates preeminent efficiency and stability, as evidenced by a high average turnover number (95000) and a low metal residue (4.8 ppm) in the Heck reaction. This catalyst has exhibited recyclability for multiple runs without significant loss of reactivity for gram-scale reactions. The catalyst's high activity and efficiency can be attributed to the suitable electrical properties and structures of the N, N'-bidentate ligand for the catalytic palladium ions, postponing their deactivations, including leaching and agglomeration.
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Affiliation(s)
- Xiao-Li Xu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, 210023, Nanjing, PR China
| | - Nian-Nian Wang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, 210023, Nanjing, PR China
| | - Yong-Hao Zou
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, 210023, Nanjing, PR China
| | - Xiao Qin
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, 210023, Nanjing, PR China
| | - Peng Wang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, 210023, Nanjing, PR China
| | - Xiang-Yu Lu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, 210023, Nanjing, PR China
| | - Xiao-Yu Zhang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, 210023, Nanjing, PR China
| | - Wei-Yin Sun
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, 210023, Nanjing, PR China
| | - Yi Lu
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, 210023, Nanjing, PR China.
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2
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Ning H, Lu L. Isoreticular Metal-Organic Framework-3 (IRMOF-3): From Experimental Preparation, Functionalized Modification to Practical Applications. Polymers (Basel) 2024; 16:2134. [PMID: 39125160 PMCID: PMC11313755 DOI: 10.3390/polym16152134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 07/19/2024] [Accepted: 07/24/2024] [Indexed: 08/12/2024] Open
Abstract
Isoreticular metal-organic framework-3 (IRMOF-3), a porous coordination polymer, is an MOF material with the characteristics of a large specific surface area and adjustable pore size. Due to the existence of the active amino group (-NH2) on the organic ligand, IRMOF-3 has more extensive research and application potential. Herein, the main preparation methods of IRMOF-3 in existing research were compared and discussed first. Second, we classified and summarized the functionalization modification of IRMOF-3 based on different reaction mechanisms. In addition, the expanded research and progress of IRMOF-3 and their derivatives in catalysis, hydrogen storage, material adsorption and separation, carrier materials, and fluorescence detection were discussed from an application perspective. Moreover, the industrialization prospect of IRMOF-3 and the pressing problems in its practical application were analyzed and prospected. This review is expected to provide a reference for the design and application of more new nanomaterials based on IRMOF-3 to develop more advanced functional materials in industrial production and engineering applications.
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Affiliation(s)
- Haoyue Ning
- Department of Packaging Engineering, Jiangnan University, Wuxi 214122, China;
| | - Lixin Lu
- Department of Packaging Engineering, Jiangnan University, Wuxi 214122, China;
- Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment & Technology, Wuxi 214122, China
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3
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Jia H, Cheng M, Zhao R, Zheng P, Ren F, Nan Y, Huang M, Li Y. Excellent Pd-Loaded Magnetic Nanocatalyst on Multicarboxyl and Boronic Acid Biligands. ACS OMEGA 2024; 9:17817-17831. [PMID: 38680317 PMCID: PMC11044249 DOI: 10.1021/acsomega.3c07133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 11/28/2023] [Accepted: 03/27/2024] [Indexed: 05/01/2024]
Abstract
An effective palladium nanocatalyst (Fe3O4@SiO2-FPBA-DTPA-Pd) was proposed and prepared, which was immobilized on magnetic silica with ethylenediamine pentaacetic acid and formylphenylboronic acid as biligands. A series of characterizations showed that Fe3O4@SiO2-FPBA-DTPA-Pd was 5-15 nm and contained 1.44 mmol/g Pd2+/Pd0. It was stable below 232.7 °C, and its saturation magnetization value was 21.17 emu/g which was easily recycled by a magnet. Its catalytic ability was evaluated through 7 Suzuki reactions and 15 Heck reactions. Results showed that the yields of 14 reactions catalyzed by Fe3O4@SiO2-FPBA-DTPA-Pd were more than 90%, while were better than those of the other two immobilized Pd catalysts on a single diethyltriamine pentaacetic acid (DTPA) group or boronic acid group. Moreover, Fe3O4@SiO2-FPBA-DTPA-Pd showed good reusability in both Suzuki and Heck reactions. In two model Suzuki and Heck reactions, after seven cycles, its yields were still above 95% without significant loss, which exceeded those of many reported catalysts; therefore, it has great potential in future large-scale industrial production.
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Affiliation(s)
- Haijiao Jia
- Tianjin Key Laboratory for Modern Drug
Delivery and High-Efficiency, Collaborative Innovation Center of Chemical
Science and Engineering, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Mengqi Cheng
- Tianjin Key Laboratory for Modern Drug
Delivery and High-Efficiency, Collaborative Innovation Center of Chemical
Science and Engineering, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Ran Zhao
- Tianjin Key Laboratory for Modern Drug
Delivery and High-Efficiency, Collaborative Innovation Center of Chemical
Science and Engineering, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Pingyi Zheng
- Tianjin Key Laboratory for Modern Drug
Delivery and High-Efficiency, Collaborative Innovation Center of Chemical
Science and Engineering, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Fangfang Ren
- Tianjin Key Laboratory for Modern Drug
Delivery and High-Efficiency, Collaborative Innovation Center of Chemical
Science and Engineering, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Yaqin Nan
- Tianjin Key Laboratory for Modern Drug
Delivery and High-Efficiency, Collaborative Innovation Center of Chemical
Science and Engineering, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Mengting Huang
- Tianjin Key Laboratory for Modern Drug
Delivery and High-Efficiency, Collaborative Innovation Center of Chemical
Science and Engineering, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Youxin Li
- Tianjin Key Laboratory for Modern Drug
Delivery and High-Efficiency, Collaborative Innovation Center of Chemical
Science and Engineering, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
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4
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Emam HE. Carbon quantum dots derived from polysaccharides: Chemistry and potential applications. Carbohydr Polym 2024; 324:121503. [PMID: 37985091 DOI: 10.1016/j.carbpol.2023.121503] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Revised: 10/02/2023] [Accepted: 10/14/2023] [Indexed: 11/22/2023]
Abstract
Since the beginning of 21th century, nanoscience and nanotechnology become the most promising topics in various fields, attributing to the superior characters of nanoscaled structures. The conventional quantum dots are substituted with new family of luminescent nanostructures, owing to their interchanged optical properties, low-cost of fabrication, biocompatibility, non-toxicity, ecofriendly, hydrophilicity and superior chemical stability. Carbon quantum dots (CQDs) were recently investigated for their simple synthesis, bio-consonance, and different revelation applicability. Obeying the green chemistry aspects, this review demonstrates an overview about CQDs generated from polysaccharides in brief, with a background on CQDs discovery, chemical composition, green synthesis via exploitation of different polysaccharides (cellulose, starch, pectin, chitin, etc) as biocompatible/biodegradable abundant biopolymers. Additionally, applications of CQDs originated from polysaccharides in environmental purposes, textiles industry and medical activities were also presented.
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Affiliation(s)
- Hossam E Emam
- Department of Pretreatment and Finishing of Cellulosic Fibers, Textile Research and Technology Institute, National Research Centre, Scopus Affiliation ID 60014618, 33 EL Buhouth St., Dokki, Giza 12622, Egypt.
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5
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Neyyathala A, Flecken F, Rang F, Papke C, Hanf S. Support Engineering for the Stabilisation of Heterogeneous Pd 3 P-Based Catalysts for Heck Coupling Reactions. Chemistry 2024; 30:e202302825. [PMID: 37870098 DOI: 10.1002/chem.202302825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 10/19/2023] [Accepted: 10/23/2023] [Indexed: 10/24/2023]
Abstract
Herein we report the use of a supported Pd3 P catalyst for Heck coupling reactions. For the stabilisation of Pd3 P and Pd, as reference system, the silica support material was modified via phosphorus doping (0.5 and 1 wt % P). Through this so-called support engineering approach, the catalytic activity of Pd3 P was clearly enhanced. Whereas an iodobenzene conversion of 79 % was witnessed for Pd3 P@SiO2 in the coupling of styrene and iodobenzene in 1 h, 90 % conversion could be achieved using Pd3 P@1P-SiO2 . This improved catalytic activity probably stems from an electronic modulation of the support surface via the introduction of phosphorus. Simultaneously, the recyclability was boosted and the Pd3 P@1P-SiO2 catalyst has shown to maintain its catalytic activity over several recovery tests. Hereby, metal leaching could almost be suppressed completely to 3 % by the use of a P-modified silica support.
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Affiliation(s)
- Arjun Neyyathala
- Karlsruhe Institute of Technology, Institute for Inorganic Chemistry, Engesserstr. 15, 76131, Karlsruhe, Germany
| | - Franziska Flecken
- Karlsruhe Institute of Technology, Institute for Inorganic Chemistry, Engesserstr. 15, 76131, Karlsruhe, Germany
| | - Fabian Rang
- Karlsruhe Institute of Technology, Institute for Inorganic Chemistry, Engesserstr. 15, 76131, Karlsruhe, Germany
| | - Christina Papke
- Karlsruhe Institute of Technology, Institute for Inorganic Chemistry, Engesserstr. 15, 76131, Karlsruhe, Germany
| | - Schirin Hanf
- Karlsruhe Institute of Technology, Institute for Inorganic Chemistry, Engesserstr. 15, 76131, Karlsruhe, Germany
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6
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Jiang S, Sun J, Ren G, Deng W. Protocol for ambient CO 2 capture and conversion into HCOOH and NH 4H 2PO 4. STAR Protoc 2023; 4:102360. [PMID: 37310864 PMCID: PMC10511859 DOI: 10.1016/j.xpro.2023.102360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 04/17/2023] [Accepted: 05/15/2023] [Indexed: 06/15/2023] Open
Abstract
CO2 capture and utilization into liquid fuels and high-added-value chemicals has been regarded as an attractive strategy to mitigate excessive carbon emissions. Here, we present a protocol to capture and convert CO2 into pure formic acid (HCOOH) solution and solid fertilizer (NH4H2PO4). We describe steps for synthesis of an IRMOF3-derived carbon-supported PdAu heterogeneous catalyst (PdAu/CN-NH2), which can efficiently catalyze (NH4)2CO3-captured CO2 into formate under ambient conditions. For complete details on the use and execution of this protocol, please refer to Jiang et al. (2023).1.
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Affiliation(s)
- Shuchao Jiang
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, Shandong 266237, P. R. China
| | - Jikai Sun
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, Shandong 266237, P. R. China
| | - Guoqing Ren
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, Shandong 266237, P. R. China.
| | - Weiqiao Deng
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, Shandong 266237, P. R. China.
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7
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Chopra J, Dayma V, Mandal A, Baroliya PK, Maiti D. An Unprecedented Valorisation of Marble Slurry Waste Material as Solid Support for Palladium‐Catalysed Heck and Suzuki Reactions. ChemistrySelect 2022. [DOI: 10.1002/slct.202200925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jaishri Chopra
- Department of Chemistry Mohanlal Sukhadia University Udaipur 313001 India
| | - Varsha Dayma
- Department of Chemistry Mohanlal Sukhadia University Udaipur 313001 India
| | - Astam Mandal
- Department of Chemistry Indian Institute of Technology Bombay, Powai Mumbai 400076 India
| | - Prabhat K. Baroliya
- Department of Chemistry Mohanlal Sukhadia University Udaipur 313001 India
- Department of Chemistry Indian Institute of Technology Bombay, Powai Mumbai 400076 India
| | - Debabrata Maiti
- Department of Chemistry Indian Institute of Technology Bombay, Powai Mumbai 400076 India
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8
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Karami Z, Khodaei MM. Post‐synthetic modification of IR-MOF‐3 as acidic-basic heterogeneous catalyst for one-pot synthesis of pyrimido[4,5-b]quinolones. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-022-04678-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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9
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Sohrabnezhad S, Moghadamy S. Zinc oxide nanorods incorporated magnetic isoreticular metal–organic framework for photodegradation of dyes. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131353] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Enayati S, Davari M, Habibi-Yangjeh A, Ebadollahi A, Feizpoor S. Enhancement of the antifungal properties of Zataria multiflora essential oil through nanoencapsulation with ZnO nanomaterial. TOXIN REV 2021. [DOI: 10.1080/15569543.2021.2007405] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Samira Enayati
- Department of Plant Protection, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran
| | - Mahdi Davari
- Department of Plant Protection, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran
| | - Aziz Habibi-Yangjeh
- Department of Chemistry, Faculty of Science, University of Mohaghegh Ardabili, Ardabil, Iran
| | - Asgar Ebadollahi
- Department of Plant Sciences, Moghan College of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran
| | - Solmaz Feizpoor
- Department of Chemistry, Faculty of Science, University of Mohaghegh Ardabili, Ardabil, Iran
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11
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Shirazi SMH, Mokhtari J, Mirjafary Z. A new method for the synthesis of abiraterone drug catalyzed by Pd‐NPs@Zn‐MOF as efficient reusable catalyst. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6477] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
| | - Javad Mokhtari
- Department of Chemistry, Science and Research Branch Islamic Azad University Tehran Iran
| | - Zohreh Mirjafary
- Department of Chemistry, Science and Research Branch Islamic Azad University Tehran Iran
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12
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Pd Nanoparticles Stabilized on the Cross-Linked Melamine-Based SBA-15 as a Catalyst for the Mizoroki–Heck Reaction. Catal Letters 2021. [DOI: 10.1007/s10562-021-03691-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
AbstractMesoporous SBA-15 silicate with a high surface area was prepared by a hydrothermal method, successively modified by organic melamine ligands and then used for deposition of Pd nanoparticles onto it. The synthesized materials were characterized with infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), nitrogen physisorption, scanning electron microscopy (SEM) coupled with energy dispersive X-ray analysis (EDX), transmission electron microscopy (TEM), nuclear magnetic resonance (NMR) and inductively coupled plasma (ICP-OES). The catalyst was effectively used in the Mizoroki–Heck coupling reaction of various reactants in the presence of an organic base giving the desired products in a short reaction time and with small catalysts loadings. The reaction parameters such as the base type, amounts of catalyst, solvents, and the temperature were optimized. The catalyst was easily recovered and reused at least seven times without significant activity losses.
Graphic Abstract
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13
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Liu C, Cui J, Wang Y, Zhang M. A novel two-dimensional metal-organic framework as a recyclable heterogeneous catalyst for the dehydrogenative oxidation of alcohol and the N-arylation of azole compounds. RSC Adv 2021; 11:11739-11744. [PMID: 35423643 PMCID: PMC8696073 DOI: 10.1039/d1ra00248a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 03/17/2021] [Indexed: 11/24/2022] Open
Abstract
A novel metal–organic framework (MOF) with two-dimensional (2D) crystal structure was developed using Cu(NO3)2·3H2O and 2,2′,5,5′-tetramethoxy-[1,1′-biphenyl]-4,4′-dicarboxylic acid. Further, its structure was characterized using infrared spectroscopy, thermogravimetry, X-ray diffraction, and X-ray crystallography. The activated Cu-MOF was used to catalyze the dehydrogenative oxidation of alcohol and N-arylation of azole compounds. Furthermore, it could be easily recovered and reused. A novel metal–organic framework (MOF) with two-dimensional (2D) crystal structure was developed using Cu(NO3)2·3H2O and 2,2′,5,5′-tetramethoxy-[1,1′-biphenyl]-4,4′-dicarboxylic acid.![]()
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Affiliation(s)
- Chengxin Liu
- Department of Chemistry, School of Sciences, Tianjin University Tianjin 30035 P. R. China
| | - Jin Cui
- National Foodstuff Inspection Center, Tianjin Product Quality Inspection Technology Research Institute Tianjin 300384 P. R. China
| | - Yufang Wang
- Scientific Research Department, Shijiazhuang University of Applied Technology Shijiazhuang 050081 P. R. China
| | - Mingjie Zhang
- Department of Chemistry, School of Sciences, Tianjin University Tianjin 30035 P. R. China
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Mousavi S, Mansoori Y, Nuri A, Koohi-Zargar B. A New Nitrogen Pd(II) Complex Immobilized on Magnetic Mesoporous Silica: A Retrievable Catalyst for C–C Bond Formation. Catal Letters 2020. [DOI: 10.1007/s10562-020-03458-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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15
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Tan J, Zhu H, Cao S, Chen S, Tian Y, Ding D, Zheng X, Hu C, Hu T, Wu C. Preparation and catalytic properties of poly(methyl methacrylate)-supported Pd 0 obtained from room-temperature, dark reduction of ionic aggregates of the unstable Pd 2+ solution ionomer. RSC Adv 2020; 10:43175-43186. [PMID: 35514939 PMCID: PMC9058133 DOI: 10.1039/d0ra08653c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Accepted: 11/16/2020] [Indexed: 11/21/2022] Open
Abstract
A poly(methyl methacrylate)-supported Pd0 nanocatalyst was successfully prepared from solution reaction of Pd(CH3COO)2 with a copolymer acid, poly(methyl methacrylate-ran-methacrylic acid) (MMA–MAA). The reaction was carried out in a benzene/methanol mixed solvent in the dark at room temperature (∼25 °C) in the absence of a typical chemical reductant. There was coordination between the Pd0 nanoclusters and MMA–MAA, resulting in Pd0 nanoclusters being stably and uniformly dispersed in the MMA–MAA matrix, with an average particle size of ∼2.5 ± 0.5 nm. Mechanistically, it can tentatively be proposed that PMMA-ionomerization of the Pd2+ ions produces intramolecular –2COO−–Pd2+ aggregate cross-links in the solution. On swelling of the chain-segments that are covalently bound via multiple C–C bonds, the resultant elastic forces cause instantaneous dissociation at the O–Pd coordination bonds to give transient bare (i.e., uncoordinated), highly-oxidative Pd2+ ions and H+-associative carboxylate groups, both of which rapidly scavenge electrons and protons, respectively, of the active α-H atoms abstracted from the methanol molecules of the solvent to make Pd0 nanoclusters supported by the re-formed MMA–MAA. The MMA–MAA acid copolymer, without itself undergoing any permanent chemical change, serves as a mechanical activator or catalyst for the mechanochemical reduction of Pd(CH3COO)2 under mild conditions. Compared with traditional Pd/C catalysts, this Pd0 nanocatalyst exhibited more excellent catalytic efficiency and reusability in the Heck reaction between iodobenzene and styrene, and it could be easily separated. The supported Pd0 nanocatalyst prepared using this novel and simple preparation method may display high-efficiency catalytic properties for other cross coupling reactions. A polymer-supported Pd0 nanocatalyst is prepared by using mechanochemical reduction as the driving force for the reaction.![]()
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Affiliation(s)
- Jinqiang Tan
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light-weight Materials and Processing, School of Materials and Chemical Engineering, Hubei University of Technology Wuhan Hubei Province 430068 P. R. China
| | - Huamei Zhu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light-weight Materials and Processing, School of Materials and Chemical Engineering, Hubei University of Technology Wuhan Hubei Province 430068 P. R. China
| | - Shasha Cao
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light-weight Materials and Processing, School of Materials and Chemical Engineering, Hubei University of Technology Wuhan Hubei Province 430068 P. R. China
| | - Sisi Chen
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light-weight Materials and Processing, School of Materials and Chemical Engineering, Hubei University of Technology Wuhan Hubei Province 430068 P. R. China
| | - Yuanfu Tian
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light-weight Materials and Processing, School of Materials and Chemical Engineering, Hubei University of Technology Wuhan Hubei Province 430068 P. R. China
| | - Dachuan Ding
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light-weight Materials and Processing, School of Materials and Chemical Engineering, Hubei University of Technology Wuhan Hubei Province 430068 P. R. China
| | - Xuan Zheng
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light-weight Materials and Processing, School of Materials and Chemical Engineering, Hubei University of Technology Wuhan Hubei Province 430068 P. R. China
| | - Chuanqun Hu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light-weight Materials and Processing, School of Materials and Chemical Engineering, Hubei University of Technology Wuhan Hubei Province 430068 P. R. China
| | - Tao Hu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light-weight Materials and Processing, School of Materials and Chemical Engineering, Hubei University of Technology Wuhan Hubei Province 430068 P. R. China
| | - Chonggang Wu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Collaborative Innovation Center of Green Light-weight Materials and Processing, School of Materials and Chemical Engineering, Hubei University of Technology Wuhan Hubei Province 430068 P. R. China
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16
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A Facile Synthesis of Pd–C3N4@Titanate Nanotube Catalyst: Highly Efficient in Mizoroki–Heck, Suzuki–Miyaura C–C Couplings. Catal Letters 2019. [DOI: 10.1007/s10562-019-02955-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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