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Ferdov S. Interzeolite Transformation from FAU-to-EDI Type of Zeolite. Molecules 2024; 29:1744. [PMID: 38675564 PMCID: PMC11052343 DOI: 10.3390/molecules29081744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 03/28/2024] [Accepted: 04/09/2024] [Indexed: 04/28/2024] Open
Abstract
This study reports for the first time the transformation of the pre-made FAU type of zeolite to the EDI type of zeolite. The concentration of the KOH solution controls this interzeolite transformation, which unusually occurs at both room temperature and under hydrothermal conditions. The transformation involves the amorphization and partial dissolution of the parent FAU phase, followed by the crystallization of EDI zeolite. At room temperature, the transformation (11-35 days) provides access to well-shaped nano-sized crystals and hollow hierarchical particles while the hydrothermal synthesis results in faster crystallization (6-27 h). These findings reveal an example of an interzeolite transformation to a potassium zeolite that lacks common composite building units with the parent zeolite phase. Finally, this work also demonstrates the first room-temperature synthesis of EDI zeolite from a gel precursor.
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Affiliation(s)
- Stanislav Ferdov
- Physics Centre of Minho and Porto Universities (CF-UM-UP), University of Minho, 4800-058 Guimarães, Portugal
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Murrieta-Rico FN, Yocupicio-Gaxiola RI, Antúnez-García J, Reyes-Serrato A, Sánchez P, Petranovskii V. Textile Functionalization Using LTA and FAU Zeolitic Materials. Polymers (Basel) 2022; 15. [PMID: 36616448 DOI: 10.3390/polym15010099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/26/2022] [Accepted: 12/14/2022] [Indexed: 12/28/2022] Open
Abstract
COVID-19 has drawn worldwide attention to the need for personal protective equipment. Face masks can be transformed from passive filters into active protection. For this purpose, it is sufficient to apply materials with oligodynamic effect to the fabric of the masks, which makes it possible to destroy infectious agents that have fallen on the mask with aerosol droplets from the air stream. Zeolites themselves are not oligodynamic materials, but can serve as carriers for nanoparticles of metals and/or compounds of silver, zinc, copper, and other materials with biocidal properties. Such a method, when the particles are immobilized on the surface of the substrate, will increase the lifetime of the active oligodynamic material. In this work, we present the functionalization of textile materials with zeolites to obtain active personal protective equipment with an extended service life. This is done with the aim to extend the synthesis of zeolitic materials to polymeric fabrics beyond cotton. The samples were characterized using XRD, SEM, and UV-Vis spectroscopy. Data of physicochemical studies of the obtained hybrid materials (fabrics with crystals grown on fibers) will be presented, with a focus on the effect of fabrics in the growth process of zeolites.
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Kouzoudis D, Baimpos T, Samourgkanidis G. A New Method for the Measurement of the Diffusion Coefficient of Adsorbed Vapors in Thin Zeolite Films, Based on Magnetoelastic Sensors. Sensors (Basel) 2020; 20:s20113251. [PMID: 32517344 PMCID: PMC7309032 DOI: 10.3390/s20113251] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 06/01/2020] [Accepted: 06/05/2020] [Indexed: 11/17/2022]
Abstract
In the current work an experimental method is used in order to calculate the diffusivity D (diffusion coefficient) of various vapors in thin zeolite films. The method is based on adsorption data from magnetoelastic sensors on top of which a zeolite layer was synthesized, and the diffusivity is extracted by fitting the data to Fick’s laws of diffusion. In particular, the method is demonstrated for two volatile organic compound (VOC) vapors on two different zeolites, the p-Xylene adsorption in Faujasite type zeolite with D=1.89×10−13 m2/s at 120 °C and the propene adsorption in Linde Type A type zeolite with D=5.9×10−14 m2/s at 80 °C, two diffusion coefficients which are extracted experimentally for first time. Our results are within the order of magnitude of other VOC/zeolite values reported in literature.
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Affiliation(s)
- Dimitris Kouzoudis
- Department of Chemical Engineering, University of Patras, GR 26504 Patras, Greece;
- Correspondence: ; Tel.: +30-2610-996880
| | - Theodoros Baimpos
- National Observatory of Athens, Lofos Koufou, P. Pendeli, GR-15236 Athens, Greece;
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Sakai M, Sasaki Y, Tomono T, Seshimo M, Matsukata M. Olefin Selective Ag-Exchanged X-Type Zeolite Membrane for Propylene/Propane and Ethylene/Ethane Separation. ACS Appl Mater Interfaces 2019; 11:4145-4151. [PMID: 30615839 DOI: 10.1021/acsami.8b20151] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Propylene/propane and ethylene/ethane separation was examined with Ag-exchanged X-type zeolite membrane (Ag-X membrane). The Na-X membrane was prepared on a porous tubular α-alumina support by a secondary growth method. The resulting Na-X membrane was ion-exchanged by using AgNO3 aq. Olefin selectivities in both mixtures were markedly improved after the ion exchange from Na to Ag cation. The Ag-X membrane exhibited a maximum propylene selectivity of 55.4 with a permeance of 4.13 × 10-8 mol m-2 s-1 Pa-1 at 353 K for a propylene/propane (50:50) mixture. This membrane also exhibited a maximum ethylene selectivity of 15.9 with a permeance of 9.04 × 10-8 mol m-2 s-1 Pa-1 at 303 K for an ethylene/ethane (50:50) mixture. We consider that the strong interaction between olefin and Ag cation plays an important role for the appearance of such high selectivity of olefin.
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Affiliation(s)
- Motomu Sakai
- Research Organization for Nano & Life Innovation , Waseda University , 3-4-1 Okubo , Shinjuku-ku, Tokyo 169-8555 , Japan
| | - Yasuhito Sasaki
- Department of Applied Chemistry , Waseda University , 3-4-1 Okubo , Shinjuku-ku, Tokyo 169-8555 , Japan
| | - Taisuke Tomono
- Department of Applied Chemistry , Waseda University , 3-4-1 Okubo , Shinjuku-ku, Tokyo 169-8555 , Japan
| | - Masahiro Seshimo
- Research Organization for Nano & Life Innovation , Waseda University , 3-4-1 Okubo , Shinjuku-ku, Tokyo 169-8555 , Japan
| | - Masahiko Matsukata
- Department of Applied Chemistry , Waseda University , 3-4-1 Okubo , Shinjuku-ku, Tokyo 169-8555 , Japan
- Advanced Research Institute for Science and Engineering , Waseda University , 3-4-1 Okubo , Shinjuku-ku, Tokyo 169-8555 , Japan
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Du J, Shi C, Wu W, Bian X, Chen P, Cui Q, Cui Z. Synthesis of core-shell structured FAU/SBA-15 composite molecular sieves and their performance in catalytic cracking of polystyrene. Sci Technol Adv Mater 2017; 18:939-949. [PMID: 29383044 PMCID: PMC5784500 DOI: 10.1080/14686996.2017.1396561] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 10/15/2017] [Accepted: 10/22/2017] [Indexed: 06/07/2023]
Abstract
Composite molecular sieves, FAU/SBA-15, having core-shell structure were synthesized. The synthesized composite sieves were characterized by X-ray diffractometry (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDS), pyrolysis fourier transform infrared (Py-FTIR) spectroscopy, temperature programmed desorption spectra (NH3-TPD), UV Raman spectroscopy, nuclear magnetic resonance (NMR) and other techniques. XRD, SEM, TEM, N2 adsorption-desorption, mass spectrometry, NMR and EDS results showed that the composite molecular sieve contained two pore channels. Py-FTIR results showed that the addition of HY molecular sieves improved the acidity of the composite zeolite. The crystallization mechanism during the growth of FAU/SBA-15 shell was deduced from the influence of crystallization time on the synthesis of FAU/SBA-15 core-shell structured composite molecular sieve. HY dissociated partially in H2SO4 solution, and consisted of secondary structural units. This framework structure was more stable than its presence in the isolated form on the same ring or in the absence of Al. Thus it played a guiding role and connected with SBA-15 closely through the Si-O bond. This resulted in the gradual covering of the exterior surface of FAU phase by SBA-15 molecular sieves. The presence of SBA-15 restricted the formation of the other high mass components and increased the selectivity towards ethylbenzene.
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Affiliation(s)
- Jinlong Du
- College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Funshun, China
| | - Chunwei Shi
- College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Funshun, China
| | - Wenyuan Wu
- Metallurgy Institute, Northeastern University, Shenyang, China
| | - Xue Bian
- Metallurgy Institute, Northeastern University, Shenyang, China
| | - Ping Chen
- College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Funshun, China
| | - Qingzhu Cui
- College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Funshun, China
| | - Zhixuan Cui
- Department of Applied Organic Materials Engineering, Inha University, Incheon, Korea
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McHugh CI, Lawhorn-Crews JM, Modi D, Douglas KA, Jones SK, Mangner TJ, Collins JM, Shields AF. Effects of capecitabine treatment on the uptake of thymidine analogs using exploratory PET imaging agents: 18F- FAU, 18F-FMAU, and 18F-FLT. Cancer Imaging 2016; 16:34. [PMID: 27751167 PMCID: PMC5067904 DOI: 10.1186/s40644-016-0092-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 10/03/2016] [Indexed: 12/02/2022] Open
Abstract
Background A principal goal for the use of positron emission tomography (PET) in oncology is for real-time evaluation of tumor response to chemotherapy. Given that many contemporary anti-neoplastic agents function by impairing cellular proliferation, it is of interest to develop imaging modalities to monitor these pathways. Here we examined the effect of capecitabine on the uptake of thymidine analogs used with PET: 3’-deoxy-3’-[18F]fluorothymidine (18F-FLT), 1-(2’-deoxy-2’-[18F]fluoro-β-D-arabinofuranosyl) thymidine (18F-FMAU), and 1-(2’-deoxy-2’-[18F]fluoro-β-D-arabinofuranosyl) uracil (18F-FAU) in patients with advanced cancer. Methods Fifteen patients were imaged, five with each imaging agent. Patients had been previously diagnosed with breast, colorectal, gastric, and esophageal cancers and had not received therapy for at least 4 weeks prior to the first scan, and had not been treated with any prior fluoropyrimidines. Subjects were imaged within a week before the start of capecitabine and on the second day of treatment, after the third dose of capecitabine. Tracer uptake was quantified by mean standard uptake value (SUVmean) and using kinetic analysis. Results Patients imaged with 18F-FLT showed variable changes in retention and two patients exhibited an increase in SUVmean of 172.3 and 89.9 %, while the other patients had changes ranging from +19.4 to -25.4 %. The average change in 18F-FMAU retention was 0.2 % (range -24.4 to 23.1) and 18F-FAU was -10.2 % (range -40.3 to 19.2). Observed changes correlated strongly with SUVmax but not kinetic measurements. Conclusions This pilot study demonstrates that patients treated with capecitabine can produce a marked increase in 18F-FLT retention in some patients, which will require further study to determine if this flare is predictive of therapeutic response. 18F-FAU and 18F-FMAU showed little change, on average, after treatment. Electronic supplementary material The online version of this article (doi:10.1186/s40644-016-0092-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Christopher I McHugh
- Cancer Biology Graduate Program, Wayne State University, Detroit, MI, 48201, USA
| | - Jawana M Lawhorn-Crews
- Karmanos Cancer Institute and Oncology, Wayne State University, 4100 John R., HW04HO, Detroit, MI, 48201, USA
| | - Dipenkumar Modi
- Karmanos Cancer Institute and Oncology, Wayne State University, 4100 John R., HW04HO, Detroit, MI, 48201, USA
| | - Kirk A Douglas
- Karmanos Cancer Institute and Oncology, Wayne State University, 4100 John R., HW04HO, Detroit, MI, 48201, USA
| | - Steven K Jones
- Cancer Biology Graduate Program, Wayne State University, Detroit, MI, 48201, USA
| | | | | | - Anthony F Shields
- Karmanos Cancer Institute and Oncology, Wayne State University, 4100 John R., HW04HO, Detroit, MI, 48201, USA.
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Basumatary AK, Kumar RV, Ghoshal AK, Pugazhenthi G. Cross flow ultrafiltration of Cr (VI) using MCM-41, MCM-48 and Faujasite (FAU) zeolite-ceramic composite membranes. Chemosphere 2016; 153:436-446. [PMID: 27031807 DOI: 10.1016/j.chemosphere.2016.03.077] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 11/28/2015] [Accepted: 03/17/2016] [Indexed: 06/05/2023]
Abstract
This work describes the removal of Cr (VI) from aqueous solution in cross flow mode using MCM-41, MCM-48 and FAU zeolite membranes prepared on circular shaped porous ceramic support. Ceramic support was manufactured using locally available clay materials via a facile uni-axial compaction method followed by sintering process. A hydrothermal technique was employed for the deposition of zeolites on the ceramic support. The porosity of ceramic support (47%) is reduced by the formation of MCM-41 (23%), MCM-48 (22%) and FAU (33%) zeolite layers. The pore size of the MCM-41, MCM-48 and FAU membrane is found to be 0.173, 0.142, and 0.153 μm, respectively, which is lower than that of the support (1.0 μm). Cross flow ultrafiltration experiments of Cr (VI) were conducted at five different applied pressures (69-345 kPa) and three cross flow rates (1.11 × 10(-7) - 2.22 × 10(-7) m(3)/s). The filtration studies inferred that the performance of the fabricated zeolite composite membranes is optimum at the maximum applied pressure (345 kPa) and the highest rejection is obtained with the lowest cross flow rate (1.11 × 10(-7) m(3)/s) for all three zeolite membrane. The permeate flux of MCM-41, MCM-48 and FAU zeolite composite membranes are almost remained constant in the entire duration of the separation process. The highest removal of 82% is shown by FAU membrane, while MCM-41 and MCM-48 display 75% and 77% of Cr (VI) removal, respectively for the initial feed concentration of 1000 ppm with natural pH of the solution at an applied pressure of 345 kPa.
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Affiliation(s)
- Ashim Kumar Basumatary
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - R Vinoth Kumar
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Aloke Kumar Ghoshal
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - G Pugazhenthi
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.
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Perina D, Korolija M, Hadžija MP, Grbeša I, Belužić R, Imešek M, Morrow C, Marjanović MP, Bakran-Petricioli T, Mikoč A, Ćetković H. Functional and Structural Characterization of FAU Gene/Protein from Marine Sponge Suberites domuncula. Mar Drugs 2015. [PMID: 26198235 PMCID: PMC4515611 DOI: 10.3390/md13074179] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Finkel-Biskis-Reilly murine sarcoma virus (FBR-MuSV) ubiquitously expressed (FAU) gene is down-regulated in human prostate, breast and ovarian cancers. Moreover, its dysregulation is associated with poor prognosis in breast cancer. Sponges (Porifera) are animals without tissues which branched off first from the common ancestor of all metazoans. A large majority of genes implicated in human cancers have their homologues in the sponge genome. Our study suggests that FAU gene from the sponge Suberites domuncula reflects characteristics of the FAU gene from the metazoan ancestor, which have changed only slightly during the course of animal evolution. We found pro-apoptotic activity of sponge FAU protein. The same as its human homologue, sponge FAU increases apoptosis in human HEK293T cells. This indicates that the biological functions of FAU, usually associated with "higher" metazoans, particularly in cancer etiology, possess a biochemical background established early in metazoan evolution. The ancestor of all animals possibly possessed FAU protein with the structure and function similar to evolutionarily more recent versions of the protein, even before the appearance of true tissues and the origin of tumors and metastasis. It provides an opportunity to use pre-bilaterian animals as a simpler model for studying complex interactions in human cancerogenesis.
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Affiliation(s)
- Dragutin Perina
- Division of Molecular Biology, Ruđer Bošković Institute, Zagreb 10000, Croatia.
| | - Marina Korolija
- Forensic Science Centre "Ivan Vučetić", Zagreb 10000, Croatia.
| | | | - Ivana Grbeša
- The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramaty-Gan 5290002, Israel.
| | - Robert Belužić
- Division of Molecular Medicine, Ruđer Bošković Institute, Zagreb 10000, Croatia.
| | - Mirna Imešek
- Division of Molecular Biology, Ruđer Bošković Institute, Zagreb 10000, Croatia.
| | - Christine Morrow
- Queen's University Belfast, Marine Laboratory, Portaferry BT22 1PF, Northern Ireland, UK.
| | | | | | - Andreja Mikoč
- Division of Molecular Biology, Ruđer Bošković Institute, Zagreb 10000, Croatia.
| | - Helena Ćetković
- Division of Molecular Biology, Ruđer Bošković Institute, Zagreb 10000, Croatia.
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Hu L, Xie S, Wang Q, Liu S, Xu L. Phase selection controlled by sodium ions in the synthesis of FAU/LTA composite zeolite. Sci Technol Adv Mater 2009; 10:015001. [PMID: 27877264 PMCID: PMC5109600 DOI: 10.1088/1468-6996/10/1/015001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2008] [Revised: 01/13/2009] [Accepted: 11/12/2008] [Indexed: 05/09/2023]
Abstract
Zeolite faujasite (FAU), Linde type A (LTA) and FAU/LTA composite have been synthesized using tetramethylammonium cation (TMA+) as template, by adjusting only the concentration of Na+ ions in the initial solution (1.00 Al2O3 4.36 SiO2 : 2.39 (TMA)2 O : β Na2 O : 249.00H2 O). Na+ ions alter the phase composition of the product more than TMA+ or OH- ions. When Na2 O concentration [Na2 O] increases from 0.024 to 0.168, the product gradually changes from pure FAU to pure LTA via the formation of FAU/LTA composite with increasing LTA fraction. Interestingly, the induction periods of FAU and LTA in the FAU/LTA composite zeolite ([Na2 O] is 0.072) are both 13 h, quite different from the induction periods of their individual pure phases-45 h for FAU and 4 h for LTA. During the crystallization, the LTA/(FAU + LTA) fraction in the composite zeolite decreases in a nearly linear fashion. Scanning electron microscopy, thermogravimetry and differential thermal analysis indicate some difference between the properties of the FAU/LTA composite zeolite and of the mechanical mixture.
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Affiliation(s)
- Linyan Hu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
- Graduate University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Sujuan Xie
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
| | - Qingxia Wang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
| | - Shenglin Liu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
| | - Longya Xu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People’s Republic of China
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