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Pérez-Ramírez E, Torres IK, Martínez-Ortiz MJ, Rivera JL, Felipe C, Guzmán A, Ibarra IA, Lima E. Coloured hybrid materials: exploiting an emergent surface property of fluorinated Al 2O 3 containing anthocyanins and betacyanins. Dalton Trans 2022; 51:12373-12383. [PMID: 35904864 DOI: 10.1039/d2dt01294d] [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
Two fluorinated γ-Al2O3 series were synthesized by a sol-gel method with two solvents (2-propanol and 2-butanol), two aluminium sources (ATB and ATP) and one fluorine source (Na3AlF6). The resulting inorganic matrixes were evaluated to characterize aluminium and fluorine species ([AlO45-], [AlO57-], [AlO69-], [AlF4-], [AlF52-] and [AlF63-]) by powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), 27Al magic angle spinning nuclear magnetic resonance (27Al MAS-NMR) and infrared spectroscopy (IR-ATR). BET and BJH analyses using the nitrogen isotherms of these materials allowed identifying a clear trend in some textural parameters such as specific surface area and fluorine content. These results were confirmed by scanning electron microscopy (SEM). Chemical affinity and acid surface properties were evidenced with colour shifts in two groups of hybrid pigments, prepared with natural anthocyanins (Brassica oleracea) and betacyanins (Bougainvillea glabra).
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Affiliation(s)
- Erik Pérez-Ramírez
- Laboratorio de Fisicoquímica y Reactividad de Superficies (LaFReS), Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito exterior s/n, Cd. Universitaria, Del., Coyoacán CP, Ciudad de México, 04510, Mexico.
| | - Ivan Kaleb Torres
- Laboratorio de Fisicoquímica y Reactividad de Superficies (LaFReS), Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito exterior s/n, Cd. Universitaria, Del., Coyoacán CP, Ciudad de México, 04510, Mexico.
| | - Ma Jesús Martínez-Ortiz
- ESIQIE - Instituto Politécnico Nacional, Avenida IPN UPALM Edificio 7, Zacatenco, 07738 México D.F., Mexico
| | - José L Rivera
- Graduate School of Physics Engineering, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, Mexico
| | - Carlos Felipe
- Department of Biosciences and Engineering, CIIEMAD-Instituto Politécnico Nacional, Ciudad da México, 07340, Mexico
| | - Ariel Guzmán
- ESIQIE - Instituto Politécnico Nacional, Avenida IPN UPALM Edificio 7, Zacatenco, 07738 México D.F., Mexico
| | - Ilich A Ibarra
- Laboratorio de Fisicoquímica y Reactividad de Superficies (LaFReS), Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito exterior s/n, Cd. Universitaria, Del., Coyoacán CP, Ciudad de México, 04510, Mexico.
| | - Enrique Lima
- Laboratorio de Fisicoquímica y Reactividad de Superficies (LaFReS), Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito exterior s/n, Cd. Universitaria, Del., Coyoacán CP, Ciudad de México, 04510, Mexico.
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Ordered Mesoporous MnAlOx Oxides Dominated by Calcination Temperature for the Selective Catalytic Reduction of NOx with NH3 at Low Temperature. Catalysts 2022. [DOI: 10.3390/catal12060637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Manganese alumina composited oxides (MnAlOx) catalysts with ordered mesoporous structure prepared by evaporation-induced self-assembly (EISA) method was designed for the selective catalytic reduction (SCR) of NOx with NH3 at low temperature. The effect of calcination temperature of MnAlOx catalysts was investigated systematically, and it was correlated with SCR activity. Results showed that with an increase in calcination temperature, the SCR activity of MnAlOx catalysts increased. When the calcination temperature was raised up to 800 °C, the NOx conversion was more than 90% in the operation temperature range of 150~240 °C. Through various characterization analysis, it was found that MnAlOx-800 °C catalysts possessed enhanced redox capacities as the higher content of Mn4+/(Mn3+ + Mn4+). Moreover, the improved redox properties could contribute to a higher NOx adsorption and activation ability, which lead to higher SCR performance of MnAlOx-800 °C catalysts. In situ DRIFTs revealed that the adsorbed NO2 and bidentate nitrate are the reactive intermediate species, and NH3 species bonded to Lewis acid sites taken part in SCR progress. The SCR progress predominantly followed E–R mechanism, while L–H mechanism also takes effect to a certain degree.
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Lin J, Yang Z, Zhao X, Ji H, Peng C, Sui B, Chen W, Zhang J, Qian G, Zhou X, Duan X. Kinetics and mechanistic insights into the hydrothermal synthesis of alumina microrods. Chem Eng Sci 2021. [DOI: 10.1016/j.ces.2021.116817] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Speyer L, Humbert S, Bizien T, Lecocq V, Hugon A. Peptization of boehmites with different peptization index: An electron microscopy and synchrotron small-angle X-ray scattering study. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Yu F, Bi S, Liu T, Pan D, Chen S, Yan X, Fan B, Li R. Synthesis of Ordered Mesoporous Zr-Al Composite Oxides with Excellent Structural and Textural Properties and Extremely High Stability. MATERIALS 2020; 13:ma13133036. [PMID: 32645947 PMCID: PMC7372406 DOI: 10.3390/ma13133036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 06/28/2020] [Accepted: 07/03/2020] [Indexed: 11/16/2022]
Abstract
Ordered mesoporous Zr-Al composite oxide materials (denoted as OMZA-x) with different Zr contents have been synthesized by a solvent evaporation-inducing self-assembly procedure associated with a thermal treatment at 100 °C. A cooperative co-assembly process of amphiphilic triblock copolymer F127 molecules and inorganic hydroxyl species originated from the hydrolysis of Zr and Al precursors was proposed to explain the synthesis of OMZA-x. Compared to ordered mesoporous alumina prepared without introducing Zr species, the resultant OMZA-x exhibited a much more ordered mesostructure combined with a distinct increase in the pore volume and specific surface area. The highly homogenous doping of Zr into the mesopore walls together with the formation of Zr-O-Al bonds can effectively enhance the thermal and hydrothermal stability of OMZA-x. For instance, the ordered mesostructure and excellent textural properties of OMZA-6 prepared with the optimum atomic ratio of Al to Zr of 6 could be well maintained even after a high-temperature treatment at 1000 °C for 1 h or a hydrothermal treatment at 100 °C for 6 h.
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Zhao H, Song H, Chou L, Zhao J, Yang J, Yan L. Insight into the structure and molybdenum species in mesoporous molybdena–alumina catalysts for isobutane dehydrogenation. Catal Sci Technol 2017. [DOI: 10.1039/c7cy00975e] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The relationship of the structure and Mo species of mesoporous molybdena–alumina catalysts with isobutane dehydrogenation has been investigated.
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Affiliation(s)
- Huahua Zhao
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
- P. R. China
| | - Huanling Song
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
- P. R. China
| | - Lingjun Chou
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
- P. R. China
| | - Jun Zhao
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
- P. R. China
| | - Jian Yang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
- P. R. China
| | - Liang Yan
- State Key Laboratory for Oxo Synthesis and Selective Oxidation
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
- P. R. China
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Bell TE, González-Carballo JM, Tooze RP, Torrente-Murciano L. γ-Al2O3 nanorods with tuneable dimensions – a mechanistic understanding of their hydrothermal synthesis. RSC Adv 2017. [DOI: 10.1039/c7ra02590d] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
This paper reports mechanistic understanding of the hydrothermal synthesis of alumina (γ-Al2O3) nanorods, presenting an economic and reproducible route for their manufacture with tuneable sizes for a wide range of applications.
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Affiliation(s)
- T. E. Bell
- Department of Chemical Engineering and Biotechnology
- University of Cambridge
- Cambridge CB3 0AS
- UK
| | | | | | - L. Torrente-Murciano
- Department of Chemical Engineering and Biotechnology
- University of Cambridge
- Cambridge CB3 0AS
- UK
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Tang H, Gunathilake C, Zhou X, Jaroniec M. Polymer-templated mesoporous hybrid oxides of Al and Cu: highly porous sorbents for ammonia. RSC Adv 2016. [DOI: 10.1039/c6ra01019a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Hybrid mesostructures consisting of copper and aluminum oxides were synthesized via co-condensation of suitable precursors in the presence of a triblock copolymer, Pluronic F127.
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Affiliation(s)
- Hairong Tang
- The Institute of Chemical Defense
- Beijing 102205
- China
- Department of Chemistry and Biochemistry
- Kent State University
| | | | - Xuezhi Zhou
- The Institute of Chemical Defense
- Beijing 102205
- China
| | - Mietek Jaroniec
- Department of Chemistry and Biochemistry
- Kent State University
- Kent
- USA
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Song X, Yang P, Jia C, Chen L, Matras-Postolek K. Self-assembled synthesis of urchin-like AlOOH microspheres with large surface area for removal of pollutants. RSC Adv 2015. [DOI: 10.1039/c5ra01255d] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Urchin-like AlOOH microspheres synthesized by a chemical induced solvothermal method revealed high efficiency for the removal of Congo red pollutant.
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Affiliation(s)
- Xueling Song
- School of Material Science and Engineering
- University of Jinan
- Jinan
- PR China
| | - Ping Yang
- School of Material Science and Engineering
- University of Jinan
- Jinan
- PR China
| | - Changchao Jia
- School of Material Science and Engineering
- University of Jinan
- Jinan
- PR China
| | - Ling Chen
- School of Material Science and Engineering
- University of Jinan
- Jinan
- PR China
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Pan D, Xu Q, Dong Z, Chen S, Yu F, Yan X, Fan B, Li R. Facile synthesis of highly ordered mesoporous cobalt–alumina catalysts and their application in liquid phase selective oxidation of styrene. RSC Adv 2015. [DOI: 10.1039/c5ra20531j] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We illustrate the preparation of highly ordered mesoporous cobalt–alumina catalysts with highly homogeneously dispersed Co(ii) species via an evaporation-induced triconstituent cooperative co-assembly method.
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Affiliation(s)
- Dahai Pan
- The Research Center of Chemical Technology & Catalysis for Energy
- College of Chemistry and Chemical Engineering
- Taiyuan University of Technology
- Taiyuan 030024
- China
| | - Qian Xu
- The Research Center of Chemical Technology & Catalysis for Energy
- College of Chemistry and Chemical Engineering
- Taiyuan University of Technology
- Taiyuan 030024
- China
| | - Zhaoyang Dong
- The Research Center of Chemical Technology & Catalysis for Energy
- College of Chemistry and Chemical Engineering
- Taiyuan University of Technology
- Taiyuan 030024
- China
| | - Shuwei Chen
- The Research Center of Chemical Technology & Catalysis for Energy
- College of Chemistry and Chemical Engineering
- Taiyuan University of Technology
- Taiyuan 030024
- China
| | - Feng Yu
- The Research Center of Chemical Technology & Catalysis for Energy
- College of Chemistry and Chemical Engineering
- Taiyuan University of Technology
- Taiyuan 030024
- China
| | - Xiaoliang Yan
- The Research Center of Chemical Technology & Catalysis for Energy
- College of Chemistry and Chemical Engineering
- Taiyuan University of Technology
- Taiyuan 030024
- China
| | - Binbin Fan
- The Research Center of Chemical Technology & Catalysis for Energy
- College of Chemistry and Chemical Engineering
- Taiyuan University of Technology
- Taiyuan 030024
- China
| | - Ruifeng Li
- The Research Center of Chemical Technology & Catalysis for Energy
- College of Chemistry and Chemical Engineering
- Taiyuan University of Technology
- Taiyuan 030024
- China
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Ultradeep hydrodesulfurization of diesel fuels using highly efficient nanoalumina-supported catalysts: Impact of support, phosphorus, and/or boron on the structure and catalytic activity. J Catal 2013. [DOI: 10.1016/j.jcat.2012.11.012] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Yu J, Le Y, Cheng B. Fabrication and CO2 adsorption performance of bimodal porous silica hollow spheres with amine-modified surfaces. RSC Adv 2012. [DOI: 10.1039/c2ra21017g] [Citation(s) in RCA: 119] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Zhang L, Jiao X, Chen D, Jiao M. γ-AlOOH Nanomaterials with Regular Shapes: Hydrothermal Fabrication and Cr2O72-Adsorption. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100793] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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