1
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Oishi K, Muraoka K, Nakayama A. Analysis of Al site-directing ability of organic structure-directing agents in FER and CHA zeolites: a computational exploration of energetic preferences. Chem Commun (Camb) 2023. [PMID: 37376997 DOI: 10.1039/d3cc01779f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2023]
Abstract
This study explores the control of Al location in zeolites by organic structure-directing agents (OSDAs) using atomistic simulations. We examine several zeolite-OSDA complexes to quantify the Al site-directing ability. The results show that OSDAs induce different energetic preferences to direct Al at certain locations. In particular, these effects can be enhanced by OSDAs with N-H moieties. Our findings will be useful for the development of novel OSDAs that can modulate Al site-directing properties.
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Affiliation(s)
- Kota Oishi
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
| | - Koki Muraoka
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
| | - Akira Nakayama
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
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2
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Buntkowsky G, Döller S, Haro-Mares N, Gutmann T, Hoffmann M. Solid-state NMR studies of non-ionic surfactants confined in mesoporous silica. Z PHYS CHEM 2021. [DOI: 10.1515/zpch-2021-3132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Abstract
This review gives an overview of current trends in the investigation of confined molecules such as higher alcohols, ethylene glycol and polyethylene glycol as guest molecules in neat and functionalized mesoporous silica materials. All these molecules have both hydrophobic and hydrophilic parts. They are characteristic role-models for the investigation of confined surfactants. Their properties are studied by a combination of solid-state NMR and relaxometry with other physicochemical techniques and molecular dynamics techniques. It is shown that this combination delivers unique insights into the structure, arrangement, dynamical properties and the guest-host interactions inside the confinement.
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Affiliation(s)
- Gerd Buntkowsky
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie , Technische Universität Darmstadt , Alarich-Weiss-Str. 8 , D-64287 Darmstadt , Germany
| | - Sonja Döller
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie , Technische Universität Darmstadt , Alarich-Weiss-Str. 8 , D-64287 Darmstadt , Germany
| | - Nadia Haro-Mares
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie , Technische Universität Darmstadt , Alarich-Weiss-Str. 8 , D-64287 Darmstadt , Germany
| | - Torsten Gutmann
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie , Technische Universität Darmstadt , Alarich-Weiss-Str. 8 , D-64287 Darmstadt , Germany
| | - Markus Hoffmann
- Department of Chemistry and Biochemistry , State University of New York College at Brockport , Brockport , NY , 14420 , USA
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3
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Ghanbari B, Kazemi Zangeneh F, Sastre G, Moeinian M, Marhabaie S, Taheri Rizi Z. Computational elucidation of the aging time effect on zeolite synthesis selectivity in the presence of water and diquaternary ammonium iodide. Phys Chem Chem Phys 2021; 23:21240-21248. [PMID: 34542551 DOI: 10.1039/d1cp01921j] [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
An example of zeolite selectivity (MFI → MOR) driven by synthesis aging time has been studied. Using N,N,N',N'-tetramethyl-N,N'-dipropyl-ethylenediammonium diiodide (TMDP) as an organic structure-directing agent (OSDA), the zeolite phases obtained at 2 h (MFI 97%), 8 h (MFI 84%, MOR 16%) and 24 h (MFI 43%, MOR 57%) have been characterized by powder X-ray diffraction. The results suggest that at intermediate aging time, namely 8 h and 24 h, the dominant phase (MFI) is displaced by MOR. Different techniques (FT-IR, Raman, 13C MAS NMR, TGA/DTG and HC microanalysis) have been employed to verify the OSDA integrity and occlusion inside the zeolite micropores as well as to quantify the water and OSDA loading. The 1H MAS NMR of the as-made occluded zeolite was compared with the spectra of TMDP and the recovered OSDA from the sample by extraction with water. The comparison indicated that TMDP was not structurally intact, indicating the chemical transformation of TMDP to imidazolinium homologues through the Hofmann degradation process. Furthermore, careful acidic breakdown of the aluminosilicate shell, covered on the zeolite samples by hydrofluoric acid, revealed that the remaining OSDA had been partially degraded to lower molecular weight ammonium salt, confirmed by 1H NMR and mass spectrometry measurements. A computational study was performed by using a force field based methodology, including accurate loading of water and OSDA in the zeolite (MFI and MOR) unit cells. The results show an important contribution of the presence of water. The samples with larger aging time (8 h and 24 h) incorporate less water and show partial TMDP degradation, whilst at the shortest aging time (2 h), there is a larger water content and TMDP remains intact. The larger accessible volume of MFI justifies that this is the dominant phase at short aging times (large water content) since it can accommodate a larger number of water molecules than MOR. The OSDA partial degradation also plays a role. At longer aging times the partial OSDA decomposition has been considered in the models by including TMDP + Imidaz, which is more stabilized by MOR, whilst at shorter aging times the only OSDA present, TMDP, is better stabilized by MFI.
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Affiliation(s)
- Bahram Ghanbari
- Department of Chemistry, Sharif University of Technology, PO Box 11155-3516, Tehran, Iran.
| | | | - German Sastre
- Instituto de Tecnologia Quimica U.P.V.-C.S.I.C., Universidad Politecnica de Valencia, Avenida Los Naranjos s/n, 46022 Valencia, Spain
| | - Maryam Moeinian
- Department of Chemistry, Sharif University of Technology, PO Box 11155-3516, Tehran, Iran.
| | - Sina Marhabaie
- Laboratoire des biomolécules, LBM, Département de chimie, École normale supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
| | - Zahra Taheri Rizi
- Research Institute of Petroleum Industry, West Blvd. of Azadi Complex, Tehran 1485733111, Iran
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4
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Buntkowsky G, Vogel M. Small Molecules, Non-Covalent Interactions, and Confinement. Molecules 2020; 25:E3311. [PMID: 32708283 PMCID: PMC7397022 DOI: 10.3390/molecules25143311] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 07/07/2020] [Accepted: 07/15/2020] [Indexed: 11/27/2022] Open
Abstract
This review gives an overview of current trends in the investigation of small guest molecules, confined in neat and functionalized mesoporous silica materials by a combination of solid-state NMR and relaxometry with other physico-chemical techniques. The reported guest molecules are water, small alcohols, and carbonic acids, small aromatic and heteroaromatic molecules, ionic liquids, and surfactants. They are taken as characteristic role-models, which are representatives for the typical classes of organic molecules. It is shown that this combination delivers unique insights into the structure, arrangement, dynamics, guest-host interactions, and the binding sites in these confined systems, and is probably the most powerful analytical technique to probe these systems.
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Affiliation(s)
- Gerd Buntkowsky
- Institut für Physikalische Chemie, Technische Universität Darmstadt, 64287 Darmstadt, Germany
| | - Michael Vogel
- Institut für Festkörperphysik, Technische Universität Darmstadt, 64295 Darmstadt, Germany
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5
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Di Iorio JR, Li S, Jones CB, Nimlos CT, Wang Y, Kunkes E, Vattipalli V, Prasad S, Moini A, Schneider WF, Gounder R. Cooperative and Competitive Occlusion of Organic and Inorganic Structure-Directing Agents within Chabazite Zeolites Influences Their Aluminum Arrangement. J Am Chem Soc 2020; 142:4807-4819. [PMID: 32053365 DOI: 10.1021/jacs.9b13817] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
We combine experiment and theory to investigate the cooperation or competition between organic and inorganic structure-directing agents (SDAs) for occupancy within microporous voids of chabazite (CHA) zeolites and to rationalize the effects of SDA siting on biasing the framework Al arrangement (Al-O(-Si-O)x-Al, x = 1-3) among CHA zeolites of essentially fixed composition (Si/Al = 15). CHA zeolites crystallized using mixtures of TMAda+ and Na+ contain one TMAda+ occluded per cage and Na+ co-occluded in an amount linearly proportional to the number of 6-MR paired Al sites, quantified by Co2+ titration. In contrast, CHA zeolites crystallized using mixtures of TMAda+ and K+ provide evidence that three K+ cations, on average, displace one TMAda+ from occupying a cage and contain predominantly 6-MR isolated Al sites. Moreover, CHA crystallizes from synthesis media containing more than 10-fold higher inorganic-to-organic ratios with K+ than with Na+ before competing crystalline phases form, providing a route to decrease the amount of organic SDA needed to crystallize high-silica CHA. Density functional theory calculations show that differences in the ionic radii of Na+ and K+ determine their preferences for siting in different CHA rings, which influences their energy to co-occlude with TMAda+ and stabilize different Al configurations. Monte Carlo models confirm that energy differences resulting from Na+ or K+ co-occlusion promote the formation of 6-MR and 8-MR paired Al arrangements, respectively. These results highlight opportunities to exploit using mixtures of organic and inorganic SDAs during zeolite crystallization in order to more efficiently use organic SDAs and influence framework Al arrangements.
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Affiliation(s)
- John R Di Iorio
- Charles D. Davidson School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
| | - Sichi Li
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, 250 Nieuwland Science Hall, Notre Dame, Indiana 46556, United States
| | - Casey B Jones
- Charles D. Davidson School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
| | - Claire T Nimlos
- Charles D. Davidson School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
| | - Yujia Wang
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, 250 Nieuwland Science Hall, Notre Dame, Indiana 46556, United States
| | - Eduard Kunkes
- BASF Corporation, 25 Middlesex-Essex Turnpike, Iselin, New Jersey 08830, United States
| | - Vivek Vattipalli
- BASF Corporation, 25 Middlesex-Essex Turnpike, Iselin, New Jersey 08830, United States
| | - Subramanian Prasad
- BASF Corporation, 25 Middlesex-Essex Turnpike, Iselin, New Jersey 08830, United States
| | - Ahmad Moini
- BASF Corporation, 25 Middlesex-Essex Turnpike, Iselin, New Jersey 08830, United States
| | - William F Schneider
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, 250 Nieuwland Science Hall, Notre Dame, Indiana 46556, United States.,Department of Chemistry and Biochemistry, University of Notre Dame, 251 Nieuwland Science Hall, Notre Dame, Indiana 46556, United States
| | - Rajamani Gounder
- Charles D. Davidson School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
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6
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Cordon MJ, Harris JW, Vega-Vila JC, Bates JS, Kaur S, Gupta M, Witzke ME, Wegener EC, Miller JT, Flaherty DW, Hibbitts DD, Gounder R. Dominant Role of Entropy in Stabilizing Sugar Isomerization Transition States within Hydrophobic Zeolite Pores. J Am Chem Soc 2018; 140:14244-14266. [DOI: 10.1021/jacs.8b08336] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Michael J. Cordon
- Charles D. Davidson School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
| | - James W. Harris
- Charles D. Davidson School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
| | - Juan Carlos Vega-Vila
- Charles D. Davidson School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
| | - Jason S. Bates
- Charles D. Davidson School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
| | - Sukhdeep Kaur
- Department of Chemical Engineering, University of Florida, 1030 Center Drive, Gainesville, Florida 32611, United States
| | - Mohit Gupta
- Department of Chemical Engineering, University of Florida, 1030 Center Drive, Gainesville, Florida 32611, United States
| | - Megan E. Witzke
- Department of Chemical and Biomolecular Engineering, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Evan C. Wegener
- Charles D. Davidson School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
| | - Jeffrey T. Miller
- Charles D. Davidson School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
| | - David W. Flaherty
- Department of Chemical and Biomolecular Engineering, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
| | - David D. Hibbitts
- Department of Chemical Engineering, University of Florida, 1030 Center Drive, Gainesville, Florida 32611, United States
| | - Rajamani Gounder
- Charles D. Davidson School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
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7
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Dib E, Mineva T, Veron E, Sarou-Kanian V, Fayon F, Alonso B. ZSM-5 Zeolite: Complete Al Bond Connectivity and Implications on Structure Formation from Solid-State NMR and Quantum Chemistry Calculations. J Phys Chem Lett 2018; 9:19-24. [PMID: 29232141 DOI: 10.1021/acs.jpclett.7b03050] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Al site distribution in the structurally complex and industrially important ZSM-5 zeolite is determined by studying the spectroscopic response of Al(OSi)4 units and using a self-consistent combination of up-to-date solid-state NMR correlations (29Si-27Al and 1H-27Al D-HMQC) and quantum chemistry methods (DFT-D). To unravel the driving forces behind specific Al sitting positions, our approach focuses on ZSM-5 containing its more efficient OSDA, tetrapropylammonium.
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Affiliation(s)
- Eddy Dib
- Institut Charles Gerhardt de Montpellier, ICGM-MACS, UMR 5253 CNRS-ENSCM-UM , 240 av. du Professeur Emile Jeanbrau, 34296 Montpellier Cedex 5, France
| | - Tzonka Mineva
- Institut Charles Gerhardt de Montpellier, ICGM-MACS, UMR 5253 CNRS-ENSCM-UM , 240 av. du Professeur Emile Jeanbrau, 34296 Montpellier Cedex 5, France
| | - Emmanuel Veron
- CNRS, CEMHTI UPR 3079, Univsité d'Orléans , F-45071 Orléans, France
| | | | - Franck Fayon
- CNRS, CEMHTI UPR 3079, Univsité d'Orléans , F-45071 Orléans, France
| | - Bruno Alonso
- Institut Charles Gerhardt de Montpellier, ICGM-MACS, UMR 5253 CNRS-ENSCM-UM , 240 av. du Professeur Emile Jeanbrau, 34296 Montpellier Cedex 5, France
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8
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Knott BC, Nimlos CT, Robichaud DJ, Nimlos MR, Kim S, Gounder R. Consideration of the Aluminum Distribution in Zeolites in Theoretical and Experimental Catalysis Research. ACS Catal 2017. [DOI: 10.1021/acscatal.7b03676] [Citation(s) in RCA: 135] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Brandon C. Knott
- Biosciences
Center, National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, Colorado 80401-3393, United States
| | - Claire T. Nimlos
- Charles
D. Davidson School of Chemical Engineering, Purdue University, 480
Stadium Mall Drive, West Lafayette, Indiana 47907, United States
| | - David J. Robichaud
- Biosciences
Center, National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, Colorado 80401-3393, United States
| | - Mark R. Nimlos
- National
Bioenergy Center, National Renewable Energy Laboratory, 15013 Denver
West Parkway, Golden, Colorado 80401-3393, United States
| | - Seonah Kim
- National
Bioenergy Center, National Renewable Energy Laboratory, 15013 Denver
West Parkway, Golden, Colorado 80401-3393, United States
| | - Rajamani Gounder
- Charles
D. Davidson School of Chemical Engineering, Purdue University, 480
Stadium Mall Drive, West Lafayette, Indiana 47907, United States
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9
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Ransom R, Coote J, Moulton R, Gao F, Shantz DF. Synthesis and Growth Kinetics of Zeolite SSZ-39. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b00629] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ross Ransom
- Department
of Chemical and Biomolecular Engineering, Tulane University, 6823 St. Charles Avenue, New Orleans, Louisiana 70118, United States
| | - Jonathan Coote
- Department
of Chemical and Biomolecular Engineering, Tulane University, 6823 St. Charles Avenue, New Orleans, Louisiana 70118, United States
| | - Roger Moulton
- SACHEM, Inc., 821 East Woodward
St., Austin, Texas 78704, United States
| | - Feng Gao
- SACHEM, Inc., 821 East Woodward
St., Austin, Texas 78704, United States
| | - Daniel F. Shantz
- Department
of Chemical and Biomolecular Engineering, Tulane University, 6823 St. Charles Avenue, New Orleans, Louisiana 70118, United States
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10
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Brunklaus G, Koller H, Zones SI. Defect Models of As-Made High-Silica Zeolites: Clusters of Hydrogen-Bonds and Their Interaction with the Organic Structure-Directing Agents Determined from1H Double and Triple Quantum NMR Spectroscopy. Angew Chem Int Ed Engl 2016; 55:14459-14463. [DOI: 10.1002/anie.201607428] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Gunther Brunklaus
- Institut für Physikalische Chemie; Westfälische Wilhelms-Universität Münster; Corrensstrasse 28/30 48149 Münster Germany
| | - Hubert Koller
- Institut für Physikalische Chemie; Westfälische Wilhelms-Universität Münster; Corrensstrasse 28/30 48149 Münster Germany
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11
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Brunklaus G, Koller H, Zones SI. Defektmodelle in siliciumreichen Zeolithen: Cluster von Wasserstoffbrücken und ihre Wechselwirkungen mit organischen Strukturdirigenten aus1H-Doppel- und Tripelquanten-NMR. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201607428] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Gunther Brunklaus
- Institut für Physikalische Chemie; Westfälische Wilhelms-Universität Münster; Corrensstraße 28/30 48149 Münster Deutschland
| | - Hubert Koller
- Institut für Physikalische Chemie; Westfälische Wilhelms-Universität Münster; Corrensstraße 28/30 48149 Münster Deutschland
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12
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Catalysis Science of NOx Selective Catalytic Reduction With Ammonia Over Cu-SSZ-13 and Cu-SAPO-34. ADVANCES IN CATALYSIS 2016. [DOI: 10.1016/bs.acat.2016.10.002] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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13
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Werner M, Rothermel N, Breitzke H, Gutmann T, Buntkowsky G. Recent Advances in Solid State NMR of Small Molecules in Confinement. Isr J Chem 2014. [DOI: 10.1002/ijch.201300095] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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14
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Ruiz-Salvador AR, Grau-Crespo R, Gray AE, Lewis DW. Aluminium distribution in ZSM-5 revisited: The role of Al–Al interactions. J SOLID STATE CHEM 2013. [DOI: 10.1016/j.jssc.2012.10.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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15
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Park MB, Cho SJ, Hong SB. Synthesis of aluminosilicate and gallosilicate zeolites via a charge density mismatch approach and their characterization. J Am Chem Soc 2011; 133:1917-34. [PMID: 21247158 DOI: 10.1021/ja1095057] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Aluminosilicate and gallosilicate zeolite syntheses via a charge density mismatch (CDM) approach are compared at intermediate-silica compositions (Si/Me = 5-16, where Me is Al or Ga). With a variation of the crystallization temperature and of the type and/or concentration of alkali metal ions added as a crystallization structure-directing agent (SDA) to tetraethylammonium-tetramethylammonium, tetraethylammonium-hexamethonium, and strontium-choline mixed-SDA systems, we were able to obtain 11 different zeolite structures. However, only 5 out of a total 40 pairs of aluminosilicate and gallosilicate synthesis runs at otherwise identical chemical compositions were found to give the same zeolite product with no detectable impurities, suggesting that the structure-directing ability of Ga is quite different from that of Al even in intermediate-silica synthesis conditions. The CDM approach to offretite synthesis led to hexagonal plate-like crystals with aspect ratios lower than 0.3, and UZM-22 exhibited no significant preference of Al substitution for particular tetrahedral sites, especially for site T1, unlike its framework type material ZSM-18. More interestingly, the EU-1 zeolite obtained from an aluminosilicate synthesis mixture containing Li(+) as an inorganic crystallization SDA in the tetraethylammonium-hexamethonium double-organic additive system has been characterized to locate about half of its Li(+) ions in the framework, while the Li distribution over the 10 topologically different tetrahedral sites is nonrandom in nature.
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Affiliation(s)
- Min Bum Park
- Department of Chemical Engineering and School of Environmental Science and Engineering, POSTECH, Pohang 790-784, Korea
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16
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Sastre G. A computational chemistry insight in the role of structure directing agents in the synthesis of zeolites. Phys Chem Chem Phys 2007; 9:1052-8. [PMID: 17311146 DOI: 10.1039/b615035g] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The role of structure directing agents in the synthesis of zeolites has been studied through atomistic simulation techniques. Three different kinds of structure directing agents have been reviewed: (i) isomorphic heteroatom Si --> Al and Si --> Ge substitutions; (ii) F(-) anions; and (iii) organic SDAs. The interplay between these structure directing agents is described and the separate effects of each one have been found from energy calculations and analysis of energetic terms.
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Affiliation(s)
- German Sastre
- Instituto de Tecnologia Quimica, UPV-CSIC, Av/Los Naranjos s/n, 46022 Valencia, Spain.
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17
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Nucleation and growth of zeolites and inorganic mesoporous solids: Molecular insights from magnetic resonance spectroscopy. Curr Opin Colloid Interface Sci 2006. [DOI: 10.1016/j.cocis.2005.12.002] [Citation(s) in RCA: 121] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Cheng CH, Shantz DF. Nanoparticle Formation and Zeolite Growth in TEOS/Organocation/Water Solutions. J Phys Chem B 2005; 109:7266-74. [PMID: 16851831 DOI: 10.1021/jp050262t] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This work investigates nanoparticle formation and zeolite growth in several tetraethyl orthosilicate (TEOS)/organocation/water solutions heated at 368 K using small-angle X-ray scattering. The effect of several synthesis parameters including organocation identity, hydroxide content, alkali content, synthesis temperature, ethanol content, and seeding are investigated. In all cases the TEOS/organocation/water solutions lead to colloidal silica nanoparticles both after aging at room temperature and after hydrothermal treatment. In addition, the size, number density, and shape of the colloidal particles depend on the organocation identity. However, in contrast to TEOS/TPAOH/water mixtures that rapidly form silicalite-1 at 368 K, none of the investigated solutions can direct the formation of a zeolite phase at 368 K. The key point that emerges from this investigation is that it is not straightforward to synthesize siliceous zeolites from clear solutions at 368 K with the investigated organocations under the conditions where silicalite-1 forms in a matter of hours. These results suggest that the zeolite community may wish to take pause before formulating a "general" description of zeolite nucleation and growth from the studies of silicalite-1 grown from clear solution at 368 K.
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Affiliation(s)
- Chil-Hung Cheng
- Department of Chemical Engineering, Texas A&M University, College Station, Texas 77843-3122, USA.
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19
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20
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Kragten DD, Fedeyko JM, Sawant KR, Rimer JD, Vlachos DG, Lobo RF, Tsapatsis M. Structure of the Silica Phase Extracted from Silica/(TPA)OH Solutions Containing Nanoparticles. J Phys Chem B 2003. [DOI: 10.1021/jp035110h] [Citation(s) in RCA: 155] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David D. Kragten
- Center for Catalytic Science and Technology, Department of Chemical Engineering, University of Delaware, Newark, Delaware 19716
| | - Joseph M. Fedeyko
- Center for Catalytic Science and Technology, Department of Chemical Engineering, University of Delaware, Newark, Delaware 19716
| | - Kaveri R. Sawant
- Center for Catalytic Science and Technology, Department of Chemical Engineering, University of Delaware, Newark, Delaware 19716
| | - Jeffrey D. Rimer
- Center for Catalytic Science and Technology, Department of Chemical Engineering, University of Delaware, Newark, Delaware 19716
| | - Dionisios G. Vlachos
- Center for Catalytic Science and Technology, Department of Chemical Engineering, University of Delaware, Newark, Delaware 19716
| | - Raul F. Lobo
- Center for Catalytic Science and Technology, Department of Chemical Engineering, University of Delaware, Newark, Delaware 19716
| | - Michael Tsapatsis
- Department of Chemical Engineering, University of Massachusetts, Amherst, Massachusetts 01003
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21
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Sastre G, Leiva S, Sabater MJ, Gimenez I, Rey F, Valencia S, Corma A. Computational and Experimental Approach to the Role of Structure-Directing Agents in the Synthesis of Zeolites: The Case of Cyclohexyl Alkyl Pyrrolidinium Salts in the Synthesis of β, EU-1, ZSM-11, and ZSM-12 Zeolites. J Phys Chem B 2003. [DOI: 10.1021/jp027506j] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- German Sastre
- Instituto de Tecnologia Quimica U.P.V.-C.S.I.C., Universidad Politecnica de Valencia, Avenida Los Naranjos s/n, 46022 Valencia, Spain
| | - Sandra Leiva
- Instituto de Tecnologia Quimica U.P.V.-C.S.I.C., Universidad Politecnica de Valencia, Avenida Los Naranjos s/n, 46022 Valencia, Spain
| | - Maria J. Sabater
- Instituto de Tecnologia Quimica U.P.V.-C.S.I.C., Universidad Politecnica de Valencia, Avenida Los Naranjos s/n, 46022 Valencia, Spain
| | - Ignacio Gimenez
- Instituto de Tecnologia Quimica U.P.V.-C.S.I.C., Universidad Politecnica de Valencia, Avenida Los Naranjos s/n, 46022 Valencia, Spain
| | - Fernando Rey
- Instituto de Tecnologia Quimica U.P.V.-C.S.I.C., Universidad Politecnica de Valencia, Avenida Los Naranjos s/n, 46022 Valencia, Spain
| | - Susana Valencia
- Instituto de Tecnologia Quimica U.P.V.-C.S.I.C., Universidad Politecnica de Valencia, Avenida Los Naranjos s/n, 46022 Valencia, Spain
| | - Avelino Corma
- Instituto de Tecnologia Quimica U.P.V.-C.S.I.C., Universidad Politecnica de Valencia, Avenida Los Naranjos s/n, 46022 Valencia, Spain
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22
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Cundy CS, Cox PA. The hydrothermal synthesis of zeolites: history and development from the earliest days to the present time. Chem Rev 2003; 103:663-702. [PMID: 12630849 DOI: 10.1021/cr020060i] [Citation(s) in RCA: 967] [Impact Index Per Article: 46.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Colin S Cundy
- Centre for Microporous Materials, Department of Chemistry, UMIST, P.O. Box 88, Manchester M60 1QD, United Kingdom
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23
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Dědeček J, Žilková N, Kotrla J, Čejka J. (Al)MCM-41 Molecular Sieves. Aluminium Distribution, Uniformity and Structure of Inner Surface. ACTA ACUST UNITED AC 2003. [DOI: 10.1135/cccc20031998] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The effect of the framework Al content and synthesis procedure on the number of framework Al atoms located on the surface of (Al)MCM-41 channels and the distribution of the Al atoms between single Al atoms and various Al-O-(SiO)1,2-Al species was investigated. The total number of accessible framework Al atoms on the channel surface was obtained from the ion exchange capacity for Na+ ions and pyridine adsorption. The number of Al pairs on the surface and their distribution between different local arrangements of the channel surface was estimated using VIS spectroscopy of Co2+ ions. At low framework Al contents, Al atoms occupy only accessible T sites on the surface of the channel walls. In aluminium-rich (Al)MCM-41, a significant part of Al atoms is incorporated inside the channel walls and these Al atoms do not form cationic sites. Al atoms on the wall surface preferentially form Al-O-(SiO)1,2-Al sequences, enabling siting of divalent cations. Different synthesis procedures resulted in differences in Al distribution. The channel surface of the (Al)MCM-41 is formed by two regular local structures containing two types of deformed six-membered rings with Al-O-(SiO)1,2-Al sequences forming cationic sites.
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24
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Wang X, Coleman J, Jia X, White JL. Quantitative Investigations of Acidity, and Transient Acidity, in Zeolites and Molecular Sieves. J Phys Chem B 2002. [DOI: 10.1021/jp0145816] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xingwu Wang
- Campus Box 8204, Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204
| | - Jeffrey Coleman
- Campus Box 8204, Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204
| | - Xin Jia
- Campus Box 8204, Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204
| | - Jeffery L. White
- Campus Box 8204, Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204
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25
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Sastre G, Fornes V, Corma A. On the Preferential Location of Al and Proton Siting in Zeolites: A Computational and Infrared Study. J Phys Chem B 2001. [DOI: 10.1021/jp013189p] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- German Sastre
- Instituto de Tecnologia Quimica U.P.V.-C.S.I.C., Universidad Politecnica de Valencia, Avenida Los Naranjos s/n, 46022 Valencia, Spain
| | - Vicente Fornes
- Instituto de Tecnologia Quimica U.P.V.-C.S.I.C., Universidad Politecnica de Valencia, Avenida Los Naranjos s/n, 46022 Valencia, Spain
| | - Avelino Corma
- Instituto de Tecnologia Quimica U.P.V.-C.S.I.C., Universidad Politecnica de Valencia, Avenida Los Naranjos s/n, 46022 Valencia, Spain
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26
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Henry PF, Weller MT, Wilson CC. Structural Investigation of TS-1: Determination of the True Nonrandom Titanium Framework Substitution and Silicon Vacancy Distribution from Powder Neutron Diffraction Studies Using Isotopes. J Phys Chem B 2001. [DOI: 10.1021/jp0107715] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Paul F. Henry
- Department of Chemistry, University of Southampton, Highfield, Southampton, Hampshire, SO17 1BJ, U.K., and ISIS Pulsed Neutron Facility, Rutherford Appleton Laboratory, Chilton, Oxfordshire, OX11 0QX, U.K
| | - Mark T. Weller
- Department of Chemistry, University of Southampton, Highfield, Southampton, Hampshire, SO17 1BJ, U.K., and ISIS Pulsed Neutron Facility, Rutherford Appleton Laboratory, Chilton, Oxfordshire, OX11 0QX, U.K
| | - Chick C. Wilson
- Department of Chemistry, University of Southampton, Highfield, Southampton, Hampshire, SO17 1BJ, U.K., and ISIS Pulsed Neutron Facility, Rutherford Appleton Laboratory, Chilton, Oxfordshire, OX11 0QX, U.K
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27
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Chatterjee A, Iwasaki T. A Reactivity Index Study to Choose the Best Template for a Particular Zeolite Synthesis. J Phys Chem A 2001. [DOI: 10.1021/jp0042617] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Abhijit Chatterjee
- Inorganic Materials Section, Tohoku National Industrial Research Institute, 4-2-1 Nigatake, Miyagino-ku, Sendai 983-8551, Japan
| | - Takashi Iwasaki
- Inorganic Materials Section, Tohoku National Industrial Research Institute, 4-2-1 Nigatake, Miyagino-ku, Sendai 983-8551, Japan
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28
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Fild C, Eckert H, Koller H. Charge-Induced Partial Ordering of Boron around Structure Directing Agents in Zeolites Observed by 13C{11B} Rotational Echo Double Resonance NMR. J Am Chem Soc 2000. [DOI: 10.1021/ja005609e] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christian Fild
- Institut für Physikalische Chemie Westfälische Wilhelms-Universität Münster Schlossplatz 4/7, D-48149 Münster, Germany
| | - Hellmut Eckert
- Institut für Physikalische Chemie Westfälische Wilhelms-Universität Münster Schlossplatz 4/7, D-48149 Münster, Germany
| | - Hubert Koller
- Institut für Physikalische Chemie Westfälische Wilhelms-Universität Münster Schlossplatz 4/7, D-48149 Münster, Germany
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29
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Shantz DF, Schmedt auf der Günne J, Koller H, Lobo RF. Multiple-Quantum 1H MAS NMR Studies of Defect Sites in As-Made All-Silica ZSM-12 Zeolite. J Am Chem Soc 2000. [DOI: 10.1021/ja000374s] [Citation(s) in RCA: 89] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniel F. Shantz
- Contribution from the Institut für Physikalische Chemie, Westfälische Wilhelms-Universität Münster, Schlossplatz 7, D-48149 Münster, Germany, and Center for Catalytic Science and Technology, Department of Chemical Engineering, University of Delaware, Newark, Delaware 19716
| | - Jörn Schmedt auf der Günne
- Contribution from the Institut für Physikalische Chemie, Westfälische Wilhelms-Universität Münster, Schlossplatz 7, D-48149 Münster, Germany, and Center for Catalytic Science and Technology, Department of Chemical Engineering, University of Delaware, Newark, Delaware 19716
| | - Hubert Koller
- Contribution from the Institut für Physikalische Chemie, Westfälische Wilhelms-Universität Münster, Schlossplatz 7, D-48149 Münster, Germany, and Center for Catalytic Science and Technology, Department of Chemical Engineering, University of Delaware, Newark, Delaware 19716
| | - Raul F. Lobo
- Contribution from the Institut für Physikalische Chemie, Westfälische Wilhelms-Universität Münster, Schlossplatz 7, D-48149 Münster, Germany, and Center for Catalytic Science and Technology, Department of Chemical Engineering, University of Delaware, Newark, Delaware 19716
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30
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Controlling the distribution of framework aluminum in high-silica zeolites. ACTA ACUST UNITED AC 2000. [DOI: 10.1016/s0167-2991(00)81064-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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