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Souza IMS, Pergher SBC, Sachse A. Can We Form Mesoporous Zeolites by Steam Assisted Crystallization of MCM-41? Molecules 2022; 27:molecules27248934. [PMID: 36558065 PMCID: PMC9783799 DOI: 10.3390/molecules27248934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/13/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
The possibility of crystallizing silicalite-1 (MFI) from the pore walls of as-synthesized MCM-41 via steam-assisted crystallization (SAC) was thoroughly investigated. A kinetic study was conducted through the impregnation of as-synthesized MCM-41 with the structure-directing agent tetrapropyl-ammonium hydroxide (TPAOH). Materials obtained after different SAC treatment times (1−288 h) were characterized by XRD, nitrogen physisorption at 77 K, TGA/DTA, and SEM. The achieved results allowed us to conclude that during SAC treatment, rapid destruction of the hexagonal mesophase occurs with the enlargement of mesopores, probably by their coalescence, until achieving non-porous amorphous silica. Only thereafter is the crystallization of the MFI phase evidenced through the development of micron-sized (>10 µm) MFI structured crystals. This study suggests the probable practical impossibility of even partial crystallization of the pore walls of mesoporous materials by SAC.
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Affiliation(s)
- Iane M. S. Souza
- Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), Université de Poitiers, UMR 7285 CNRS, 4 rue Michel Brunet, CEDEX 9, 86073 Poitiers, France
- LABPEMOL, Laboratorio de Peneiras Moleculares. Av. Sen. Salgado Filho, 3000-Lagoa Nova, Natal 59072-970, RN, Brazil
| | - Sibele B. C. Pergher
- LABPEMOL, Laboratorio de Peneiras Moleculares. Av. Sen. Salgado Filho, 3000-Lagoa Nova, Natal 59072-970, RN, Brazil
| | - Alexander Sachse
- Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), Université de Poitiers, UMR 7285 CNRS, 4 rue Michel Brunet, CEDEX 9, 86073 Poitiers, France
- Correspondence:
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2
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Li H, Brüning R, Liang J, Jiang W, Robichaud J, Liu J, Tang Z, Djaoued Y. Alkaline steaming-assisted conversion: a new strategy for the synthesis of pure NiFe 2O 4 and CoFe 2O 4 spinel ferrite nanoparticles. NEW J CHEM 2022. [DOI: 10.1039/d2nj02281h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new strategy, the ‘alkaline steaming-assisted conversion route,’ has been developed to synthesize pure NiFe2O4 and CoFe2O4 nanoparticles by using ethylenediamine, together with ammonia, collectively as the alkaline steaming vapor.
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Affiliation(s)
- Hua Li
- Department of Materials Chemistry, School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen, Jiangxi, 333403, P. R. China
- Laboratoire de Recherche en Matériaux et Micro-spectroscopies Raman et TIR, Université de Moncton-Campus de Shippagan, Shippagan, NB, E8S1P6, Canada
| | - Ralf Brüning
- Physics Department, Mount Allison University, Sackville, NB, E4L1E6, Canada
| | - Jian Liang
- National Engineering Research Centre for Domestic & Building Ceramics, Jingdezhen Ceramic Institute, Jingdezhen, Jiangxi, 333001, P. R. China
| | - Weihui Jiang
- Department of Materials Chemistry, School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen, Jiangxi, 333403, P. R. China
- National Engineering Research Centre for Domestic & Building Ceramics, Jingdezhen Ceramic Institute, Jingdezhen, Jiangxi, 333001, P. R. China
| | - Jacques Robichaud
- Laboratoire de Recherche en Matériaux et Micro-spectroscopies Raman et TIR, Université de Moncton-Campus de Shippagan, Shippagan, NB, E8S1P6, Canada
| | - Jianmin Liu
- National Engineering Research Centre for Domestic & Building Ceramics, Jingdezhen Ceramic Institute, Jingdezhen, Jiangxi, 333001, P. R. China
| | - Zijuan Tang
- Department of Materials Chemistry, School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen, Jiangxi, 333403, P. R. China
| | - Yahia Djaoued
- Laboratoire de Recherche en Matériaux et Micro-spectroscopies Raman et TIR, Université de Moncton-Campus de Shippagan, Shippagan, NB, E8S1P6, Canada
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Zhai Y, Zhang X, Wang F, Lv G, Jiang T, Wu Y, Li M, Li M, Zhang Q, Liu Y. Racing Crystallization Mechanism for Economical Design of Single-Crystal Hollow ZSM-5 with the Broken Limit of Si/Al Ratio and Improved Mass Transfer. ACS APPLIED MATERIALS & INTERFACES 2021; 13:15246-15260. [PMID: 33780227 DOI: 10.1021/acsami.1c00768] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Development of economic strategy to synthesize hollow zeolite with widely tunable Si/Al ratios providing variable acidity is of great significance in industry. Here, a one-step and low-cost strategy without mesoporogen was successfully developed to synthesize single-crystal hollow ZSM-5 containing mesopores/macropores, with variable Si/Al ratios of about 14-∞ and 114-∞ at critical TPA+/SiO2 ratios of 0.05-0.1 and 0.05, respectively. This is the first time the usage of a large amount of TPAOH was avoided while breaking the traditional limitation of Si/Al ratio (25-50). The component of synthesis system and crystallization temperature acting as the vital roles in hollow structure has been confirmed by a series of characterization. Moreover, according to the investigation of the evolution process, a novel racing crystallization mechanism based on the competition relationship between surface crystallization and the internal dissolution rate was proposed for the first time. The racing crystallization mechanism and internal nonprotective aluminum become the crucial factors for synthesis. The prepared hollow ZSM-5 zeolites exhibit superior catalytic performance in the different acidity-catalyzed condensation involving large molecules between benzaldehyde and n-butyl alcohol as well as 2-hydroxyacetophenone, which is mainly attributed to the property acidity, more accessible active Al sites on the surface, and shorter diffusion path. By calculating, the effectiveness factor (η) of hollow zeolite is close to 1, further confirming its better mass transfer ability. The strategy has also been successfully extended to the synthesis of high-amount Fe-doped, Ga-doped, and B-doped hollow silicate-1.
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Affiliation(s)
- Yi Zhai
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P.R. China
| | - Xubin Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P.R. China
| | - Fumin Wang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P.R. China
| | - Guojun Lv
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, P.R. China
| | - Tao Jiang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P.R. China
| | - Yuzhou Wu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P.R. China
| | - Mengyue Li
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P.R. China
| | - Mengyao Li
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P.R. China
| | - Qing Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P.R. China
| | - Yongkui Liu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P.R. China
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4
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Shang C, Wu Z, Duo Wu W, Dong Chen X. Combination of spray drying encapsulation and steaming transformation toward robust hierarchical zeolite microspheres: Synthesis, formation mechanism and acid catalysis. Chem Eng Sci 2021. [DOI: 10.1016/j.ces.2020.116080] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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5
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Song X, Yang X, Zhang T, Zhang H, Zhang Q, Hu D, Chang X, Li Y, Chen Z, Jia M, Zhang P, Yu J. Controlling the Morphology and Titanium Coordination States of TS-1 Zeolites by Crystal Growth Modifier. Inorg Chem 2020; 59:13201-13210. [PMID: 32877172 DOI: 10.1021/acs.inorgchem.0c01518] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Developing an effective strategy to synthesize perfect titanosilicate TS-1 zeolite crystals with desirable morphologies, enriched isolated framework Ti species, and thus enhanced catalytic oxidation properties is a pervasive challenge in zeolite crystal engineering. We here used an amino acid l-carnitine as a crystal growth modifier and ethanol as a cosolvent to regulate the morphologies and the Ti coordination states of TS-1 zeolites. During the hydrothermal crystallization process, the introduced l-carnitine can not only tailor the anisotropic growth rates of zeolite crystals but also induce the formation of uniformly distributed framework Ti species through building a suitable chemical interaction with the Ti precursor species. Condition optimizations could afford the generation of perfect hexagonal plate TS-1 crystals and elongated platelet TS-1 crystals enriched in tetrahedral framework Ti sites (TiO4) or mononuclear octahedrally coordinated Ti species (TiO6). Both samples showed significant improvement in catalytic activity for the H2O2-mediated epoxidation of alkenes. In particular, the elongated platelet TS-1 enriched in "TiO6" species afforded the highest activity in 1-hexene epoxidation, with a turnover frequency (TOF) of up to 131 h-1, which is approximately twice as high as that of the conventional TS-1 zeolite (TOF: 65 h-1) and even higher than those of the literature-reported TiO6-containting TS-1 catalysts derived from the hydrothermal post-treatment of TS-1 zeolites. This work demonstrates that the morphologies and the titanium coordination states of TS-1 zeolites can be effectively tuned by directly introducing suitable crystal growth modifiers, thus providing new opportunities for developing highly efficient titanosilicate zeolite catalysts for important catalytic applications.
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Affiliation(s)
- Xiaojing Song
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Xiaotong Yang
- Key Laboratory of Surface and Interface Chemistry of Jilin Province, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Tianjun Zhang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China.,Department of Chemistry, Dalhousie University, Halifax B3H4R2, Canada
| | - Hao Zhang
- Key Laboratory of Surface and Interface Chemistry of Jilin Province, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Qiang Zhang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Dianwen Hu
- Key Laboratory of Surface and Interface Chemistry of Jilin Province, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Xinyu Chang
- Key Laboratory of Surface and Interface Chemistry of Jilin Province, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Yingying Li
- Department of Chemistry, Dalhousie University, Halifax B3H4R2, Canada
| | - Ziyi Chen
- Department of Chemistry, Dalhousie University, Halifax B3H4R2, Canada
| | - Mingjun Jia
- Key Laboratory of Surface and Interface Chemistry of Jilin Province, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Peng Zhang
- Department of Chemistry, Dalhousie University, Halifax B3H4R2, Canada
| | - Jihong Yu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China.,International Center of Future Science, Jilin University, Changchun 130012, P. R. China
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6
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Chen LH, Sun MH, Wang Z, Yang W, Xie Z, Su BL. Hierarchically Structured Zeolites: From Design to Application. Chem Rev 2020; 120:11194-11294. [DOI: 10.1021/acs.chemrev.0c00016] [Citation(s) in RCA: 158] [Impact Index Per Article: 39.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Li-Hua Chen
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, 430070 Wuhan, China
| | - Ming-Hui Sun
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, 430070 Wuhan, China
- Laboratory of Inorganic Materials Chemistry, University of Namur, 61 rue de Bruxelles, B-5000 Namur, Belgium
| | - Zhao Wang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, 430070 Wuhan, China
| | - Weimin Yang
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Shanghai Research Institute of Petrochemical Technology, SINOPEC, Shanghai 201208, China
| | - Zaiku Xie
- State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Shanghai Research Institute of Petrochemical Technology, SINOPEC, Shanghai 201208, China
| | - Bao-Lian Su
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, 430070 Wuhan, China
- Laboratory of Inorganic Materials Chemistry, University of Namur, 61 rue de Bruxelles, B-5000 Namur, Belgium
- Clare Hall, University of Cambridge, Cambridge CB2 1EW, United Kingdom
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Abstract
Hierarchical zeolites have been extensively studied due to their enhancement of intra-crystalline diffusion, which leads to the improved catalytic activity and resistance to coking-deactivation. Traditional synthesis strategies of hierarchical zeolites via post-treatment or directing synthesis with the aid of mesoporous template are often characterized by high energy consumption and substantial use of expensive and environmentally unfriendly organic templates. In the recent decade, new green synthesis protocols have been developed for the effective synthesis of conventional and hierarchical zeolites. In this review, the latest advancements on the green synthesis of hierarchical zeolites are summarized and discussed in detail.
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Masoumifard N, Guillet-Nicolas R, Kleitz F. Synthesis of Engineered Zeolitic Materials: From Classical Zeolites to Hierarchical Core-Shell Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1704439. [PMID: 29479756 DOI: 10.1002/adma.201704439] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 10/08/2017] [Indexed: 06/08/2023]
Abstract
The term "engineered zeolitic materials" refers to a class of materials with a rationally designed pore system and active-sites distribution. They are primarily made of crystalline microporous zeolites as the main building blocks, which can be accompanied by other secondary components to form composite materials. These materials are of potential importance in many industrial fields like catalysis or selective adsorption. Herein, critical aspects related to the synthesis and modification of such materials are discussed. The first section provides a short introduction on classical zeolite structures and properties, and their conventional synthesis methods. Then, the motivating rationale behind the growing demand for structural alteration of these zeolitic materials is discussed, with an emphasis on the ongoing struggles regarding mass-transfer issues. The state-of-the-art techniques that are currently available for overcoming these hurdles are reviewed. Following this, the focus is set on core-shell composites as one of the promising pathways toward the creation of a new generation of highly versatile and efficient engineered zeolitic substances. The synthesis approaches developed thus far to make zeolitic core-shell materials and their analogues, yolk-shell, and hollow materials, are also examined and summarized. Finally, the last section concisely reviews the performance of novel core-shell, yolk-shell, and hollow zeolitic materials for some important industrial applications.
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Affiliation(s)
- Nima Masoumifard
- Department of Chemistry, Université Laval, Quebec City, Quebec, G1V 0A6, Canada
| | - Rémy Guillet-Nicolas
- Department of Inorganic Chemistry-Functional Materials, Faculty of Chemistry, University of Vienna, Währinger Straße 42, Vienna, 1090, Austria
| | - Freddy Kleitz
- Department of Chemistry, Université Laval, Quebec City, Quebec, G1V 0A6, Canada
- Department of Inorganic Chemistry-Functional Materials, Faculty of Chemistry, University of Vienna, Währinger Straße 42, Vienna, 1090, Austria
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9
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Sun M, Chen C, Chen L, Su B. Hierarchically porous materials: Synthesis strategies and emerging applications. Front Chem Sci Eng 2016. [DOI: 10.1007/s11705-016-1578-y] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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10
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Xiao JJ, Li H, Zhu GB. Hierarchically porous MFI zeolite synthesized by zeolite seeding and alkaline steaming-mediated crystallization. ADV POWDER TECHNOL 2016. [DOI: 10.1016/j.apt.2016.04.034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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11
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Schwieger W, Machoke AG, Weissenberger T, Inayat A, Selvam T, Klumpp M, Inayat A. Hierarchy concepts: classification and preparation strategies for zeolite containing materials with hierarchical porosity. Chem Soc Rev 2016; 45:3353-76. [DOI: 10.1039/c5cs00599j] [Citation(s) in RCA: 372] [Impact Index Per Article: 46.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Starting from a basic classification of “hierarchical porosity” this review gives a broad overview of preparation routes towards hierarchically porous all-zeolite and zeolite containing composite materials.
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Affiliation(s)
- Wilhelm Schwieger
- Lehrstuhl für Chemische Reaktionstechnik
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
- 91058 Erlangen
- Germany
| | - Albert Gonche Machoke
- Lehrstuhl für Chemische Reaktionstechnik
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
- 91058 Erlangen
- Germany
| | - Tobias Weissenberger
- Lehrstuhl für Chemische Reaktionstechnik
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
- 91058 Erlangen
- Germany
| | - Amer Inayat
- Lehrstuhl für Chemische Reaktionstechnik
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
- 91058 Erlangen
- Germany
| | - Thangaraj Selvam
- Lehrstuhl für Chemische Reaktionstechnik
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
- 91058 Erlangen
- Germany
| | - Michael Klumpp
- Lehrstuhl für Chemische Reaktionstechnik
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
- 91058 Erlangen
- Germany
| | - Alexandra Inayat
- Lehrstuhl für Chemische Reaktionstechnik
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
- 91058 Erlangen
- Germany
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12
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Deng Z, Zhang Y, Zheng J, Zhu K, Zhou X. A hierarchical bulky ZSM-5 zeolite synthesized via glycerol-mediated crystallization using a mesoporous steam-treated dry gel as the precursor. NEW J CHEM 2015. [DOI: 10.1039/c5nj01410g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The mesoporous precursor obtained by steaming the dry gel can be transformed into a hierarchical ZSM-5 zeolite by using glycerol as crystallization medium.
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Affiliation(s)
- Zhongyan Deng
- State Key Laboratory of Chemical Engineering
- East China University of Science and Technology
- Shanghai
- P. R. China
| | - Yicheng Zhang
- State Key Laboratory of Chemical Engineering
- East China University of Science and Technology
- Shanghai
- P. R. China
| | - Jingwei Zheng
- State Key Laboratory of Chemical Engineering
- East China University of Science and Technology
- Shanghai
- P. R. China
| | - Kake Zhu
- State Key Laboratory of Chemical Engineering
- East China University of Science and Technology
- Shanghai
- P. R. China
| | - Xinggui Zhou
- State Key Laboratory of Chemical Engineering
- East China University of Science and Technology
- Shanghai
- P. R. China
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Wei H, Zhang N, Zhao T, Liu Y, Wen Y, Wang X, Li B. Controlling the microstructure of MFI zeolites with Mg(OH)2 nanocrystals to improve their catalytic performances. RSC Adv 2015. [DOI: 10.1039/c4ra08277j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The microstructure of TS-1 and S-1 were affected by Mg(OH)2 NCs and their catalytic performance has been improved.
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Affiliation(s)
- Huijuan Wei
- Institute of Industrial Catalysis
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- P R China
| | - Ning Zhang
- Institute of Industrial Catalysis
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- P R China
| | - Tian Zhao
- Institute of Industrial Catalysis
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- P R China
| | - Yangqing Liu
- Institute of Industrial Catalysis
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- P R China
| | - Yiqiang Wen
- Institute of Industrial Catalysis
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- P R China
| | - Xiangyu Wang
- Institute of Industrial Catalysis
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- P R China
| | - Baojun Li
- Institute of Industrial Catalysis
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou 450001
- P R China
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14
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Parlett CMA, Wilson K, Lee AF. Hierarchical porous materials: catalytic applications. Chem Soc Rev 2013; 42:3876-93. [DOI: 10.1039/c2cs35378d] [Citation(s) in RCA: 764] [Impact Index Per Article: 69.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Jin J, Zhang X, Li Y, Li H, Wu W, Cui Y, Chen Q, Li L, Gu J, Zhao W, Shi J. A Simple Route to Synthesize Mesoporous ZSM-5 Templated by Ammonium-Modified Chitosan. Chemistry 2012; 18:16549-55. [DOI: 10.1002/chem.201201614] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2012] [Revised: 09/19/2012] [Indexed: 11/09/2022]
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