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Takasao G, Wada T, Thakur A, Chammingkwan P, Terano M, Taniike T. Insight into structural distribution of heterogeneous Ziegler–Natta catalyst from non-empirical structure determination. J Catal 2021. [DOI: 10.1016/j.jcat.2020.11.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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27
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Mai ATM, Thakur A, Ton NNT, Nguyen TN, Kaneko T, Taniike T. Photodegradation of a semi-aromatic bio-derived polyimide. Polym Degrad Stab 2021. [DOI: 10.1016/j.polymdegradstab.2020.109472] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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28
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Nguyen TN, Nakanowatari S, Nhat Tran TP, Thakur A, Takahashi L, Takahashi K, Taniike T. Learning Catalyst Design Based on Bias-Free Data Set for Oxidative Coupling of Methane. ACS Catal 2021. [DOI: 10.1021/acscatal.0c04629] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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29
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Miyazato I, Nguyen TN, Takahashi L, Taniike T, Takahashi K. Representing Catalytic and Processing Space in Methane Oxidation Reaction via Multioutput Machine Learning. J Phys Chem Lett 2021; 12:808-814. [PMID: 33415983 DOI: 10.1021/acs.jpclett.0c03465] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Multioutput support vector regression (SVR) is implemented to simultaneously predict the selectivities and the CH4 conversion against experimental conditions in methane oxidation catalysts. The predictions unveil the details of how each selectivity and CH4 conversion behaves in each catalyst. In particular, the selectivity and the CH4 conversion of Mn-Na2WO4/SiO2, Ti-Na2WO4/SiO2, Pd-Na2WO4/SiO2, and Na2WO 4/SiO2 are predicted, and the effects of Mn, Ti, and Pd are unveiled. In addition, the trade-off points of CO and C2H6 are identified for each catalyst, leading to maximization of the C2H6 yield. Thus the simultaneous prediction of the reaction trend with catalysts not only will help with the understanding of the catalyst activities but also will provide guidance for designing the experimental conditions.
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Takasao G, Wada T, Thakur A, Chammingkwan P, Terano M, Taniike T. Dataset of energetically accessible structures of MgCl 2/TiCl 4 clusters for Ziegler-Natta catalysts. Data Brief 2020; 34:106654. [PMID: 33364274 PMCID: PMC7753921 DOI: 10.1016/j.dib.2020.106654] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 12/09/2020] [Accepted: 12/10/2020] [Indexed: 11/28/2022] Open
Abstract
This data article provides a dataset of the energetically accessible structures including the most stable structures of xMgCl2/yTiCl4 nanoplates (x = 6-19, y = 0-4). TiCl4-capped MgCl2 nanoplates are regarded as the building block of the Ziegler-Natta catalyst. The most stable structures were determined for MgCl2/TiCl4 nanoplates of different sizes and chemical compositions using a combination of the genetic algorithm and the DFT geometry optimization. The evolution in the genetic algorithm produced a number of meta-stable structures. A set of isomeric structures having similar energy to the most stable structure (termed energetically accessible structures) are provided as realistic models of MgCl2/TiCl4 nanoplates. These structures are useful for further investigation on the structural distribution of Ti species on MgCl2 regarding the Ziegler-Natta catalyst.
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Sugiyama K, Nguyen TN, Nakanowatari S, Miyazato I, Taniike T, Takahashi K. Direct Design of Catalysts in Oxidative Coupling of Methane via High‐Throughput Experiment and Deep Learning. ChemCatChem 2020. [DOI: 10.1002/cctc.202001680] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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32
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Wada T, Funako T, Chammingkwan P, Thakur A, Matta A, Terano M, Taniike T. Structure-performance relationship of Mg(OEt)2-based Ziegler-Natta catalysts. J Catal 2020. [DOI: 10.1016/j.jcat.2020.06.030] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Takahashi K, Takahashi L, Nguyen TN, Thakur A, Taniike T. Multidimensional Classification of Catalysts in Oxidative Coupling of Methane through Machine Learning and High-Throughput Data. J Phys Chem Lett 2020; 11:6819-6826. [PMID: 32787213 DOI: 10.1021/acs.jpclett.0c01926] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Understanding the unique features of catalysts is a complex matter as it requires quantitative analysis with a relatively large selection of catalyst data. Here, unique features of each catalyst within the oxidative methane of coupling (OCM) reaction are investigated by combining data science and high throughput experimental data. Visualization of high-throughput OCM data reveals that there are several groups of catalysts based on their response against experimental conditions. Unsupervised machine learning, in particular, the Gaussian mixture model, classifies the OCM catalysts into six groups based on similarity in catalytic activities. Data visualization and parallel coordinates unveil the unique catalytic features of each classified group. Each classified group is statistically analyzed where unique features of each group are defined in term of C2 selectivity, CH4 conversion, and their composition in each calssified group. Thus, systematic design of catalysts can be achieved in principle on the basis of the unique features of catalysts uncovered via data science.
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Chammingkwan P, Shangkum GY, Mai LTT, Mohan P, Thakur A, Wada T, Taniike T. Modulator-free approach towards missing-cluster defect formation in Zr-based UiO-66. RSC Adv 2020; 10:28180-28185. [PMID: 35519118 PMCID: PMC9055678 DOI: 10.1039/d0ra04812g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 07/17/2020] [Indexed: 11/21/2022] Open
Abstract
By rigorous control of water, missing-cluster defects in Zr-based UiO-66 were generated to a remarkable extent without the need of acidic modulators. The presence of missing-cluster defects created hierarchical pore structures, which had a profound effect on the catalytic performance.
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Piovano A, D'Amore M, Wada T, Cleto Bruzzese P, Takasao G, Thakur A, Chammingkwan P, Terano M, Civalleri B, Bordiga S, Taniike T, Groppo E. Revisiting the identity of δ-MgCl2: Part II. Morphology and exposed surfaces studied by vibrational spectroscopies and DFT calculation. J Catal 2020. [DOI: 10.1016/j.jcat.2020.04.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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36
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Tran TPN, Nguyen TN, Taniike T, Nishimura S. Tailoring Graphene Oxide Framework with N- and S- Containing Organic Ligands for the Confinement of Pd Nanoparticles Towards Recyclable Catalyst Systems. Catal Letters 2020. [DOI: 10.1007/s10562-020-03284-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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37
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Wada T, Takasao G, Piovano A, D'Amore M, Thakur A, Chammingkwan P, Bruzzese PC, Terano M, Civalleri B, Bordiga S, Groppo E, Taniike T. Revisiting the identity of δ-MgCl2: Part I. Structural disorder studied by synchrotron X-ray total scattering. J Catal 2020. [DOI: 10.1016/j.jcat.2020.03.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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38
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Nguyen TN, Nhat TTP, Takimoto K, Thakur A, Nishimura S, Ohyama J, Miyazato I, Takahashi L, Fujima J, Takahashi K, Taniike T. High-Throughput Experimentation and Catalyst Informatics for Oxidative Coupling of Methane. ACS Catal 2019. [DOI: 10.1021/acscatal.9b04293] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Thakur A, Wada T, Chammingkwan P, Terano M, Taniike T. Development of Large-Scale Stopped-Flow Technique and its Application in Elucidation of Initial Ziegler-Natta Olefin Polymerization Kinetics. Polymers (Basel) 2019; 11:E1012. [PMID: 31181603 PMCID: PMC6631648 DOI: 10.3390/polym11061012] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 06/04/2019] [Accepted: 06/05/2019] [Indexed: 11/16/2022] Open
Abstract
The stopped-flow (SF) technique has been extensively applied to study Ziegler-Natta (ZN) olefin polymerization kinetics within an extremely short period (typically <0.2 s) for understanding the nature of the active sites as well as the polymerization mechanisms through microstructure analyses of obtained polymers. In spite of its great applicability, a small amount of polymer that is yielded in a short-time polymerization has been a major bottleneck for polymer characterizations. In order to overcome this limitation, a large-scale SF (LSF) system has been developed, which offers stable and scalable polymerization over an expanded time range from a few tens milliseconds to several seconds. The scalability of the LSF technique has been further improved by introducing a new quenching protocol. With these advantages, the LSF technique has been effectively applied to address several unknown issues in ZN catalysis, such as the role of physical and chemical transformations of a catalyst on the initial polymerization kinetics, and regiochemistry of ZN propylene polymerization. Here, we review the development of the LSF technique and recent efforts for understanding heterogeneous ZN olefin polymerization catalysis with this new system.
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Thakur A, Baba R, Wada T, Chammingkwan P, Taniike T. Cooperative Catalysis by Multiple Active Centers of a Half-Titanocene Catalyst Integrated in Polymer Random Coils. ACS Catal 2019. [DOI: 10.1021/acscatal.9b00214] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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41
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Takasao G, Wada T, Thakur A, Chammingkwan P, Terano M, Taniike T. Machine Learning-Aided Structure Determination for TiCl4–Capped MgCl2 Nanoplate of Heterogeneous Ziegler–Natta Catalyst. ACS Catal 2019. [DOI: 10.1021/acscatal.8b05080] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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42
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Takahashi K, Takahashi L, Miyazato I, Fujima J, Tanaka Y, Uno T, Satoh H, Ohno K, Nishida M, Hirai K, Ohyama J, Nguyen TN, Nishimura S, Taniike T. The Rise of Catalyst Informatics: Towards Catalyst Genomics. ChemCatChem 2019. [DOI: 10.1002/cctc.201801956] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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43
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Chammingkwan P, Bando Y, Terano M, Taniike T. Nano-Dispersed Ziegler-Natta Catalysts for 1 μm-Sized Ultra-High Molecular Weight Polyethylene Particles. Front Chem 2018; 6:524. [PMID: 30460228 PMCID: PMC6232879 DOI: 10.3389/fchem.2018.00524] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 10/11/2018] [Indexed: 11/13/2022] Open
Abstract
A catalytic approach to synthesize microfine ultra-high molecular weight polyethylene (UHMWPE) particles was proposed based on the exploitation of nano-sized catalysts. By utilizing MgO nanoparticles as a core material, a Ziegler-Natta-type MgO/MgCl2/TiCl4 core-shell catalyst with the particle size in a nano-range scale was prepared in a simple preparation step. The organic modification of MgO surfaces prior to catalyzation prevented agglomeration and facilitated the full dispersion of catalyst particles at a primary particle level for the first time. The nano-dispersed catalysts successfully afforded a direct access to UHMWPE having the particle size in the range of 1-2 μm at a reasonable activity. Extremely fine polymer particles yielded several advantages, especially at a significantly lower fusion temperature in compression molding.
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Matta A, Gupta M, Kumar Y, Taniike T, Van der Eycken J, Singh BK. One-Pot Synthesis and Photophysical Studies of Dihydropyrimidinone-Based Dyes: Novel Violet-Blue Light Emitting Fluorophores. ChemistrySelect 2018. [DOI: 10.1002/slct.201802199] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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45
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Dao AT, Shimokata J, Takeuchi K, Nakayama K, Taniike T. Stabilization of recombinant spider silk in thermo-oxidative degradation: High-throughput screening for antioxidants. Polym Degrad Stab 2018. [DOI: 10.1016/j.polymdegradstab.2018.04.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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46
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Bando Y, Chammingkwan P, Terano M, Taniike T. Synthesis of Ultrahigh Molecular Weight Polyethylene Using MgO/MgCl
2
/TiCl
4
Core–Shell Catalysts. MACROMOL CHEM PHYS 2018. [DOI: 10.1002/macp.201800011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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47
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Thakur A, Baba R, Chammingkwan P, Terano M, Taniike T. Synthesis of aryloxide-containing half-titanocene catalysts grafted to soluble polynorbornene chains and their application in ethylene polymerization: Integration of multiple active centres in a random coil. J Catal 2018. [DOI: 10.1016/j.jcat.2017.10.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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48
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Chammingkwan P, Yamaguchi F, Terano M, Taniike T. Influence of isotacticity and its distribution on degradation behavior of polypropylene. Polym Degrad Stab 2017. [DOI: 10.1016/j.polymdegradstab.2017.07.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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49
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Matta A, Katada I, Kawazoe J, Chammingkwan P, Terano M, Taniike T. Stabilization of polypropylene-based materials via molecular retention with hyperbranched polymer. Polym Degrad Stab 2017. [DOI: 10.1016/j.polymdegradstab.2017.05.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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50
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Chammingkwan P, Terano M, Taniike T. High-Throughput Synthesis of Support Materials for Olefin Polymerization Catalyst. ACS COMBINATORIAL SCIENCE 2017; 19:331-342. [PMID: 28371578 DOI: 10.1021/acscombsci.7b00010] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Rational catalyst design necessitates fundamental knowledge on the structure-performance relationship, while the synthetic throughput for heterogeneous Ziegler-Natta olefin polymerization catalysts has long prevented the acquisition of a statistical database. In this contribution, an in-house reactor system was developed to realize the parallel synthesis of support materials for Ziegler-Natta catalysts for the first time. The developed system enabled parallel synthesis of 24 magnesium ethoxide samples with excellent reproducibility and morphological control comparable to a conventional experiment. Our demonstration revealed that the generation of diverse particle characteristics could be achieved through the addition of a third component as a structural modulator, in which the in-house parallel reactor system combined with the first principle component analysis enabled fast screening of effective modulators.
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