Hernández Morejudo, S.; Massó Ramírez, A.; García-González, E.; Concepción Heydorn, P.; López Nieto, JM. (2015). Preparation, characterization and catalytic behavior for propanepartial oxidation of Ga-promoted MoVTeO catalysts. Applied Catalysis A: General. 504:51-61. https://doi.org/10.1016/j.apcata.2014.12.039
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/74748
Title:
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Preparation, characterization and catalytic behavior for propanepartial oxidation of Ga-promoted MoVTeO catalysts
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Author:
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Hernández Morejudo, Selene
Massó Ramírez, Amada
García-González, Esther
Concepción Heydorn, Patricia
López Nieto, José Manuel
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UPV Unit:
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Universitat Politècnica de València. Instituto Universitario Mixto de Tecnología Química - Institut Universitari Mixt de Tecnologia Química
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Issued date:
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Abstract:
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[EN] Two sets of Ga-promoted MoVTeO catalysts were synthesized hydrothermally and heat-treated at 600 degrees C in N-2: (i) materials prepared from gels with Mo/V/Te/Ga atomic ratios of 1/0.60/0.17/x (x=0-0.12) (A-series) ...[+]
[EN] Two sets of Ga-promoted MoVTeO catalysts were synthesized hydrothermally and heat-treated at 600 degrees C in N-2: (i) materials prepared from gels with Mo/V/Te/Ga atomic ratios of 1/0.60/0.17/x (x=0-0.12) (A-series) and (ii) materials prepared from gels with Mo/V/Te/Ga atomic ratios of 1/0.60-x/0.17/x (x=0.15 or 0.25) (B-series). In addition, a Ga-containing MoVTeO catalyst was also prepared from M1-containing MoVTeO material by impregnation with aqueous solution of gallium and heat-treated at 450 degrees C in N-2. Catalysts were characterized by means of powder XRD, TEM, Raman spectroscopy, NH3-TPD and XPS and tested in the partial oxidation of propane. The results showed that the addition of small amount of gallium significantly increase the selectivity to acrylic acid (AA) at low propane conversion. However, at high propane conversion, the selectivity to AA strongly depends on both the catalyst composition and the gallium incorporation method. The higher selectivity to acrylic acid over Ga-containing MoVTeO catalysts has been related to: (i) structural changes in the M1 phase by the incorporation of Ga3+ into the octahedral structural framework and/or (ii) incorporation of Ga3+ species on the catalyst surface thus modifying catalysts acid properties. (C) 2014 Elsevier B.V. All rights reserved.
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Subjects:
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Mo-V-Te-O
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Ga-promoted
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Oxidation catalysts
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Propane
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Acrlylic acid
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Copyrigths:
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Reserva de todos los derechos
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Source:
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Applied Catalysis A: General. (issn:
0926-860X
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DOI:
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10.1016/j.apcata.2014.12.039
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Publisher:
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Elsevier
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Publisher version:
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http://dx.doi.org/10.1016/j.apcata.2014.12.039
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Project ID:
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info:eu-repo/grantAgreement/MINECO//CTQ2012-37925-C03-01/ES/CATALIZADORES PARA LA ENERGIA Y EL MEDIOAMBIENTE: ACTIVACION SELECTIVA DE ENLACES S-H Y C-H/
info:eu-repo/grantAgreement/MINECO//SEV-2012-0267/
info:eu-repo/grantAgreement/MICINN//MAT2010-19837-C06-05/ES/SINTESIS, CARACTERIZACION Y PROCESADO DE MATERIALES PARA BATERIAS Y PILAS DE COMBUSTIBLE/
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Thanks:
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Financial support from DGICYT in Spain (Project CTQ2012-37925-C03-1 and Program Severo Ochoa SEV-2012-0267) is gratefully acknowledged. EGG acknowledges finantial support through spanish project MAT2010-19837-C06-05 and ...[+]
Financial support from DGICYT in Spain (Project CTQ2012-37925-C03-1 and Program Severo Ochoa SEV-2012-0267) is gratefully acknowledged. EGG acknowledges finantial support through spanish project MAT2010-19837-C06-05 and the ICTS-Microscopia Electronica in Madrid for facilities.
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Type:
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Artículo
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