1
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Guo W, Lin Y, Chen S, Diao Z. Catalytic Decomposition of H
2
O
2
for NO Oxidation‐Removal over Hierarchical Fe‐ZSM‐5: Effect of Ethanol on Zeolite Performance. ChemistrySelect 2022. [DOI: 10.1002/slct.202200441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Wen Guo
- School of Chemical Engineering Changchun University of Technology Changchun Jilin 130012 China
- Advanced Institute of Materials Science Changchun University of Technology Changchun Jilin 130012 China
| | - Yuanhang Lin
- School of Chemical Engineering Changchun University of Technology Changchun Jilin 130012 China
| | - Siqi Chen
- School of Chemical Engineering Changchun University of Technology Changchun Jilin 130012 China
| | - Zhenheng Diao
- School of Chemical Engineering Changchun University of Technology Changchun Jilin 130012 China
- Advanced Institute of Materials Science Changchun University of Technology Changchun Jilin 130012 China
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2
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Lignin as a Bio-Sourced Secondary Template for ZSM-5 Zeolite Synthesis. Catalysts 2022. [DOI: 10.3390/catal12040368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
The aim of this study was to investigate the effect of the addition of lignin as a sacrificial agent in ZSM-5 zeolite synthesis. Peculiar growths of ZSM-5 crystals leading to various textural properties were observed. Hence, the behavior in acid-catalyzed conversion of methanol into hydrocarbons (MTH) shifted from high selectivity toward olefins (>55%) to the sole formation of dimethyl ether (DME). Lignin acted as a bio-sourced secondary template (BSST), impacting the zeolite crystals’ shape and, thus, their physicochemical properties.
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3
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Medeiros-Costa IC, Dib E, Nesterenko N, Dath JP, Gilson JP, Mintova S. Silanol defect engineering and healing in zeolites: opportunities to fine-tune their properties and performances. Chem Soc Rev 2021; 50:11156-11179. [PMID: 34605833 DOI: 10.1039/d1cs00395j] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Zeolites have been game-changing materials in oil refining and petrochemistry over the last 60 years and have the potential to play the same role in the emerging processes of the energy and environmental transition. Although zeolites are crystalline inorganic solids, their structures are not perfect and the presence of defect sites - mainly Brønsted acid sites and silanols - influences their thermal and chemical resistance as well as their performances in key areas such as catalysis, gas and liquid separations and ion-exchange. In this paper, we review the type of defects in zeolites and the characterization techniques used for their identification and quantification with the focus on diffraction, spectroscopic and modeling approaches. More specifically, throughout the review, we will focus on silanol (Si-OH) defects located within the micropore structure and/or on the external surface of zeolites. The main approaches applied to engineer and heal defects and their consequences on the properties and applications of zeolites in catalysis and separation processes are highlighted. Finally, the challenges and opportunities of silanol defect engineering in tuning the properties of zeolites to meet the requirements for specific applications are presented.
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Affiliation(s)
- Izabel C Medeiros-Costa
- Laboratoire Catalyse et Spectrochimie (LCS), Normandie University, ENSICAEN, CNRS, 6 boulevard du Marechal Juin, 14050 Caen, France. .,Total Research and Technology Feluy, B-7181 Seneffe, Belgium
| | - Eddy Dib
- Laboratoire Catalyse et Spectrochimie (LCS), Normandie University, ENSICAEN, CNRS, 6 boulevard du Marechal Juin, 14050 Caen, France.
| | | | | | - Jean-Pierre Gilson
- Laboratoire Catalyse et Spectrochimie (LCS), Normandie University, ENSICAEN, CNRS, 6 boulevard du Marechal Juin, 14050 Caen, France.
| | - Svetlana Mintova
- Laboratoire Catalyse et Spectrochimie (LCS), Normandie University, ENSICAEN, CNRS, 6 boulevard du Marechal Juin, 14050 Caen, France.
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4
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Arumugam M, Goh CK, Zainal Z, Triwahyono S, Lee AF, Wilson K, Taufiq-Yap YH. Hierarchical HZSM-5 for Catalytic Cracking of Oleic Acid to Biofuels. NANOMATERIALS 2021; 11:nano11030747. [PMID: 33809677 PMCID: PMC8002341 DOI: 10.3390/nano11030747] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 03/10/2021] [Accepted: 03/11/2021] [Indexed: 11/20/2022]
Abstract
Solid acid catalyzed cracking of waste oil-derived fatty acids is an attractive route to hydrocarbon fuels. HZSM-5 is an effective acid catalyst for fatty acid cracking; however, its microporous nature is susceptible to rapid deactivation by coking. We report the synthesis and application of hierarchical HZSM-5 (h-HZSM-5) in which silanization of pre-crystallized zeolite seeds is employed to introduce mesoporosity during the aggregation of growing crystallites. The resulting h-HZSM-5 comprises a disordered array of fused 10–20 nm crystallites and mesopores with a mean diameter of 13 nm, which maintain the high surface area and acidity of a conventional HZSM-5. Mesopores increase the yield of diesel range hydrocarbons obtained from oleic acid deoxygenation from ~20% to 65%, attributed to improved acid site accessibility within the hierarchical network.
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Affiliation(s)
- Mahashanon Arumugam
- Catalysis Science and Technology Research Centre (PutraCat), Faculty of Science, Universiti Putra Malaysia, UPM, Serdang 43400, Selangor, Malaysia; (M.A.); (C.K.G.); (Z.Z.)
| | - Chee Keong Goh
- Catalysis Science and Technology Research Centre (PutraCat), Faculty of Science, Universiti Putra Malaysia, UPM, Serdang 43400, Selangor, Malaysia; (M.A.); (C.K.G.); (Z.Z.)
- School of Applied Science, Republic Polytechnic, 9 Woodlands Ave 9, Singapore 738964, Singapore
| | - Zulkarnain Zainal
- Catalysis Science and Technology Research Centre (PutraCat), Faculty of Science, Universiti Putra Malaysia, UPM, Serdang 43400, Selangor, Malaysia; (M.A.); (C.K.G.); (Z.Z.)
| | - Sugeng Triwahyono
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, UTM, Johor Bahru 81310, Johor, Malaysia;
| | - Adam F. Lee
- Centre for Applied Materials & Industrial Chemistry (CAMIC), School of Science, RMIT University, 124 La Trobe Street, Melbourne, VIC 3000, Australia;
| | - Karen Wilson
- Centre for Applied Materials & Industrial Chemistry (CAMIC), School of Science, RMIT University, 124 La Trobe Street, Melbourne, VIC 3000, Australia;
- Correspondence: (K.W.); (Y.H.T.-Y.); Tel.: +61-(03)-9925-2122 (K.W.); +603-7967-6954 (Y.H.T.-Y.)
| | - Yun Hin Taufiq-Yap
- Catalysis Science and Technology Research Centre (PutraCat), Faculty of Science, Universiti Putra Malaysia, UPM, Serdang 43400, Selangor, Malaysia; (M.A.); (C.K.G.); (Z.Z.)
- Faculty of Science and Natural Resources, Universiti Malaysia Sabah,Kota Kinabalu 88300, Sabah, Malaysia
- Correspondence: (K.W.); (Y.H.T.-Y.); Tel.: +61-(03)-9925-2122 (K.W.); +603-7967-6954 (Y.H.T.-Y.)
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5
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Synthesis methods and recent advances in hierarchical zeolites: a brief review. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2021. [DOI: 10.1007/s13738-021-02183-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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6
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Silva DSA, Castelblanco WN, Piva DH, de Macedo V, Carvalho KT, Urquieta-González EA. Tuning the Brønsted and Lewis acid nature in HZSM-5 zeolites by the generation of intracrystalline mesoporosity—Catalytic behavior for the acylation of anisole. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2020.111026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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7
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Li H, Zhai Y, Zhang X, Lv G, Shen Y, Wang X, Jiang T, Wu Y. Iron-Containing TS-1 Zeolites with Controllable Mesopores by Desilication and Their Application in Phenol Hydroxylation. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c00048] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hang Li
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P. R. China
| | - 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
| | - Guojun Lv
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, PR China
| | - Yu Shen
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P. R. China
| | - Xuqing Wang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, 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
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8
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Untangling the role of the organosilane functional groups in the synthesis of hierarchical ZSM-5 zeolite by crystallization of silanized protozeolitic units. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.11.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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9
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Jiao J, Sun J, Ullah R, Bai S, Zhai C. One-step synthesis of hydrophobic clinoptilolite modified by silanization for the degradation of crystal violet dye in aqueous solution. RSC Adv 2020; 10:22809-22818. [PMID: 35514574 PMCID: PMC9054683 DOI: 10.1039/d0ra03151h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 05/19/2020] [Indexed: 11/21/2022] Open
Abstract
One-step synthesis of hydrophobic CPs was demonstrated, in which the kinetically-controlled induction period and thermodynamically-based rapid growth process were elucidated.
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Affiliation(s)
- Jian Jiao
- Beijing Key Laboratory for Green Catalysis and Separation
- Department of Chemical Engineering
- Beijing University of Technology
- Beijing
- China
| | - Jihong Sun
- Beijing Key Laboratory for Green Catalysis and Separation
- Department of Chemical Engineering
- Beijing University of Technology
- Beijing
- China
| | - Raza Ullah
- Beijing Key Laboratory for Green Catalysis and Separation
- Department of Chemical Engineering
- Beijing University of Technology
- Beijing
- China
| | - Shiyang Bai
- Beijing Key Laboratory for Green Catalysis and Separation
- Department of Chemical Engineering
- Beijing University of Technology
- Beijing
- China
| | - Chengwei Zhai
- Beijing Key Laboratory for Green Catalysis and Separation
- Department of Chemical Engineering
- Beijing University of Technology
- Beijing
- China
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10
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Preparation of hydrophobic MFI zeolites containing hierarchical micro-mesopores using seeds functionalized with octyltriethoxysilane. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124109] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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11
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Modern synthesis strategies for hierarchical zeolites: Bottom-up versus top-down strategies. ADV POWDER TECHNOL 2019. [DOI: 10.1016/j.apt.2018.12.014] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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12
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Debecker DP, Le Bras S, Boissière C, Chaumonnot A, Sanchez C. Aerosol processing: a wind of innovation in the field of advanced heterogeneous catalysts. Chem Soc Rev 2018; 47:4112-4155. [DOI: 10.1039/c7cs00697g] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Aerosol processing technologies represent a major route of innovation in the mushrooming field of heterogeneous catalysts preparation.
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Affiliation(s)
- Damien P. Debecker
- Université catholique de Louvain
- Institute of Condensed Matter and Nanosciences
- 1348 Louvain-La-Neuve
- Belgium
| | - Solène Le Bras
- Université catholique de Louvain
- Institute of Condensed Matter and Nanosciences
- 1348 Louvain-La-Neuve
- Belgium
| | - Cédric Boissière
- Sorbonne Université
- Collège de France
- PSL University
- CNRS
- Laboratoire de Chimie de La Matière Condensée de Paris LCMCP
| | | | - Clément Sanchez
- Sorbonne Université
- Collège de France
- PSL University
- CNRS
- Laboratoire de Chimie de La Matière Condensée de Paris LCMCP
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13
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Grecco SDTF, Carvalho DRD, Zandonai CH, Fernandes-Machado NRC, Lião LM, Urquieta-González EA, Rangel MDC. Catalytic cracking of crude soybean oil on Beta nanozeolites. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcata.2016.02.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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14
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15
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Hunns JA, Arroyo M, Lee AF, Escola JM, Serrano D, Wilson K. Hierarchical mesoporous Pd/ZSM-5 for the selective catalytic hydrodeoxygenation of m-cresol to methylcyclohexane. Catal Sci Technol 2016. [DOI: 10.1039/c5cy02072g] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mesopore incorporation into ZSM-5 enhances the dispersion of Pd nanoparticles significantly accelerating m-cresol conversion relative to a conventional microporous ZSM-5, and dramatically increasing selectivity towards the desired methylcyclohexane deoxygenated product.
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Affiliation(s)
- James A. Hunns
- European Bioenergy Research Institute
- Aston University
- Birmingham B4 7ET
- UK
| | - Marta Arroyo
- Chemical and Environmental Engineering Group
- Rey Juan Carlos University
- Móstoles
- Spain
| | - Adam F. Lee
- European Bioenergy Research Institute
- Aston University
- Birmingham B4 7ET
- UK
| | - José M. Escola
- Chemical and Environmental Engineering Group
- Rey Juan Carlos University
- Móstoles
- Spain
| | - David Serrano
- Chemical and Environmental Engineering Group
- Rey Juan Carlos University
- Móstoles
- Spain
- IMDEA Energy Institute
| | - Karen Wilson
- European Bioenergy Research Institute
- Aston University
- Birmingham B4 7ET
- UK
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16
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Serrano DP, Escola JM, Sanz R, Garcia RA, Peral A, Moreno I, Linares M. Hierarchical ZSM-5 zeolite with uniform mesopores and improved catalytic properties. NEW J CHEM 2016. [DOI: 10.1039/c5nj02856f] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Uniform mesopores are generated in hierarchical ZSM-5 by a mesopore narrowing treatment, showing enhanced activity in the acylation of 2-methoxynaphthalene.
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Affiliation(s)
- D. P. Serrano
- IMDEA Energy Institute
- Avda Ramón de la Sagra
- Móstoles
- Spain
- Environmental and Chemical Engineering Group
| | - J. M. Escola
- Environmental and Chemical Engineering Group
- ESCET
- Rey Juan Carlos University
- Móstoles
- Spain
| | - R. Sanz
- Environmental and Chemical Engineering Group
- ESCET
- Rey Juan Carlos University
- Móstoles
- Spain
| | - R. A. Garcia
- Environmental and Chemical Engineering Group
- ESCET
- Rey Juan Carlos University
- Móstoles
- Spain
| | - A. Peral
- Environmental and Chemical Engineering Group
- ESCET
- Rey Juan Carlos University
- Móstoles
- Spain
| | - I. Moreno
- Environmental and Chemical Engineering Group
- ESCET
- Rey Juan Carlos University
- Móstoles
- Spain
| | - M. Linares
- Environmental and Chemical Engineering Group
- ESCET
- Rey Juan Carlos University
- Móstoles
- Spain
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17
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Yan Y, Azhati A, Guo X, Zhang Y, Tang Y. Silanization-Based Zeolite Crystallization: Participation Degree and Pathway. Chemistry 2015; 21:12161-70. [DOI: 10.1002/chem.201501034] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Indexed: 11/10/2022]
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18
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Wei Y, Parmentier TE, de Jong KP, Zečević J. Tailoring and visualizing the pore architecture of hierarchical zeolites. Chem Soc Rev 2015; 44:7234-61. [DOI: 10.1039/c5cs00155b] [Citation(s) in RCA: 278] [Impact Index Per Article: 30.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
This review provides an overview of the different synthesis methods and microscopy techniques for tailoring and visualizing the pore architecture of hierarchical zeolites.
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Affiliation(s)
- Ying Wei
- Inorganic Chemistry and Catalysis
- Debye Institute for Nanomaterials Science
- Utrecht University
- Utrecht
- Netherlands
| | - Tanja E. Parmentier
- Inorganic Chemistry and Catalysis
- Debye Institute for Nanomaterials Science
- Utrecht University
- Utrecht
- Netherlands
| | - Krijn P. de Jong
- Inorganic Chemistry and Catalysis
- Debye Institute for Nanomaterials Science
- Utrecht University
- Utrecht
- Netherlands
| | - Jovana Zečević
- Inorganic Chemistry and Catalysis
- Debye Institute for Nanomaterials Science
- Utrecht University
- Utrecht
- Netherlands
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19
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Yan Y, Guo X, Zhang Y, Tang Y. Future of nano-/hierarchical zeolites in catalysis: gaseous phase or liquid phase system. Catal Sci Technol 2015. [DOI: 10.1039/c4cy01114g] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This perspective highlights the catalytic characteristics and future prospects of nano-/hierarchical zeolites in gaseous phase and liquid phase reactions.
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Affiliation(s)
- Yueer Yan
- Department of Chemistry
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Fudan University
- Shanghai
- PR China
| | - Xiao Guo
- Department of Chemistry
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Fudan University
- Shanghai
- PR China
| | - Yahong Zhang
- Department of Chemistry
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Fudan University
- Shanghai
- PR China
| | - Yi Tang
- Department of Chemistry
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Fudan University
- Shanghai
- PR China
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20
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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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21
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Mesopore quality determines the lifetime of hierarchically structured zeolite catalysts. Nat Commun 2014. [DOI: 10.1038/ncomms4922] [Citation(s) in RCA: 229] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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22
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Serrano D, Pinnavaia T, Aguado J, Escola J, Peral A, Villalba L. Hierarchical ZSM-5 zeolites synthesized by silanization of protozeolitic units: Mediating the mesoporosity contribution by changing the organosilane type. Catal Today 2014. [DOI: 10.1016/j.cattod.2013.10.052] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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23
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24
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Zhang Y, Zhu K, Zhou X, Yuan W. Synthesis of hierarchically porous ZSM-5 zeolites by steam-assisted crystallization of dry gels silanized with short-chain organosilanes. NEW J CHEM 2014. [DOI: 10.1039/c4nj00811a] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nanounits gradually appear within silanized dry gels and assemble by the same orientation into self-sustaining zeolite aggregates with large mesopores.
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Affiliation(s)
- Yicheng Zhang
- 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
| | - Weikang Yuan
- State Key Laboratory of Chemical Engineering
- East China University of Science and Technology
- Shanghai, P. R. China
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25
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Li K, Valla J, Garcia-Martinez J. Realizing the Commercial Potential of Hierarchical Zeolites: New Opportunities in Catalytic Cracking. ChemCatChem 2013. [DOI: 10.1002/cctc.201300345] [Citation(s) in RCA: 309] [Impact Index Per Article: 28.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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26
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Nano-crystallite oriented self-assembled ZSM-5 zeolite and its LDPE cracking properties: Effects of accessibility and strength of acid sites. J Catal 2013. [DOI: 10.1016/j.jcat.2013.03.019] [Citation(s) in RCA: 110] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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27
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Xiao Q, Yao Q, Zhuang J, Liu G, Zhong Y, Zhu W. A localized crystallization to hierarchical ZSM-5 microspheres aided by silane coupling agent. J Colloid Interface Sci 2013; 394:604-10. [DOI: 10.1016/j.jcis.2012.11.070] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2012] [Revised: 11/16/2012] [Accepted: 11/19/2012] [Indexed: 10/27/2022]
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28
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29
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Serrano DP, Escola JM, Pizarro P. Synthesis strategies in the search for hierarchical zeolites. Chem Soc Rev 2012; 42:4004-35. [PMID: 23138888 DOI: 10.1039/c2cs35330j] [Citation(s) in RCA: 572] [Impact Index Per Article: 47.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Great interest has arisen in the past years in the development of hierarchical zeolites, having at least two levels of porosities. Hierarchical zeolites show an enhanced accessibility, leading to improved catalytic activity in reactions suffering from steric and/or diffusional limitations. Moreover, the secondary porosity offers an ideal space for the deposition of additional active phases and for functionalization with organic moieties. However, the secondary surface represents a discontinuity of the crystalline framework, with a low connectivity and a high concentration of silanols. Consequently, hierarchical zeolites exhibit a less "zeolitic behaviour" than conventional ones in terms of acidity, hydrophobic/hydrophilic character, confinement effects, shape-selectivity and hydrothermal stability. Nevertheless, this secondary surface is far from being amorphous, which provides hierarchical zeolites with a set of novel features. A wide variety of innovative strategies have been developed for generating a secondary porosity in zeolites. In the present review, the different synthetic routes leading to hierarchical zeolites have been classified into five categories: removal of framework atoms, surfactant-assisted procedures, hard-templating, zeolitization of preformed solids and organosilane-based methods. Significant advances have been achieved recently in several of these alternatives. These include desilication, due to its versatility, dual templating with polyquaternary ammonium surfactants and framework reorganization by treatment with surfactant-containing basic solutions. In the last two cases, the materials so prepared show both mesoscopic ordering and zeolitic lattice planes. Likewise, interesting results have been obtained with the incorporation of different types of organosilanes into the zeolite crystallization gels, taking advantage of their high affinity for silicate and aluminosilicate species. Crystallization of organofunctionalized species favours the formation of organic-inorganic composites that, upon calcination, are transformed into hierarchical zeolites. However, in spite of this impressive progress in novel strategies for the preparation of hierarchical zeolites, significant challenges are still ahead. The overall one is the development of methods that are versatile in terms of zeolite structures and compositions, capable of tuning the secondary porosity properties, and being scaled up in a cost-effective way. Recent works have demonstrated that it is possible to scale-up easily the synthesis of hierarchical zeolites by desilication. Economic aspects may become a significant bottleneck for the commercial application of hierarchical zeolites since most of the synthesis strategies so far developed imply the use of more expensive procedures and reagents compared to conventional zeolites. Nevertheless, the use of hierarchical zeolites as efficient catalysts for the production of high value-added compounds could greatly compensate these increased manufacturing costs.
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Affiliation(s)
- D P Serrano
- Department of Chemical and Energy Technology, ESCET, Rey Juan Carlos University, c/Tulipán s/n, 28933, Móstoles, Madrid, Spain.
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Zhang X, Liu D, Xu D, Asahina S, Cychosz KA, Agrawal KV, Al Wahedi Y, Bhan A, Al Hashimi S, Terasaki O, Thommes M, Tsapatsis M. Synthesis of self-pillared zeolite nanosheets by repetitive branching. Science 2012; 336:1684-7. [PMID: 22745424 DOI: 10.1126/science.1221111] [Citation(s) in RCA: 582] [Impact Index Per Article: 48.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Hierarchical zeolites are a class of microporous catalysts and adsorbents that also contain mesopores, which allow for fast transport of bulky molecules and thereby enable improved performance in petrochemical and biomass processing. We used repetitive branching during one-step hydrothermal crystal growth to synthesize a new hierarchical zeolite made of orthogonally connected microporous nanosheets. The nanosheets are 2 nanometers thick and contain a network of 0.5-nanometer micropores. The house-of-cards arrangement of the nanosheets creates a permanent network of 2- to 7-nanometer mesopores, which, along with the high external surface area and reduced micropore diffusion length, account for higher reaction rates for bulky molecules relative to those of other mesoporous and conventional MFI zeolites.
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Affiliation(s)
- Xueyi Zhang
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455, USA
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Čejka J, Centi G, Perez-Pariente J, Roth WJ. Zeolite-based materials for novel catalytic applications: Opportunities, perspectives and open problems. Catal Today 2012. [DOI: 10.1016/j.cattod.2011.10.006] [Citation(s) in RCA: 250] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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