Electrospun vanadium oxide based submicron diameter fiber catalysts. Part I: Preparation procedure and propane ODH application

Ternero-Hidalgo, Juan José; Torres-Liñán, Javier; Guerrero‐Pérez, M. Olga; Rodríguez-Mirasol, José; Cordero, Tomás

doi:10.1016/j.cattod.2018.10.073

Cited by 18 publications

(18 citation statements)

References 52 publications

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“…Table S1 shows the activity results obtained by MS and FTIR spectra from the gas phase during propane ODH experiments in the IRRaman reactor at 340 ºC . These results are consistent with those obtained with the same samples in a conventional fixed bed microreactor 48 , which validates the catalytic relevance of the data obtained in the IRRaman reactor (i.e., it is a genuine operando reactor) and the temperature control.…”

Section: ) Studying Catalysts During Reactionsupporting

confidence: 90%

“…The catalysts were prepared by electrospinning. The synthesis of the solutions has previously been described 48 . Briefly, the starting polymer solution was prepared by dissolving 2.100 g of the zirconium fibers precursor (zirconium (IV) propoxide) and 0.317 g of PVP in 2.984 g of 1-propanol solventwith 0.450 g of acetylacetone.…”

Section: Methodsmentioning

confidence: 99%

“…Subsequently, the three polymer solutions were vigorously stirred for 24 h at room temperature. The electrospinning equipment and procedure have also been described in previous articles [48][49] . The electrospun fibers were calcined in air flow (150 mL•min -1 STP) at 500 ºC in a conventional tubular furnace, with a heating rate of 10 ºC•min -1 followed by 6 h dwell time in order to eliminate the organic part and the remaining solvent, and to stabilize the zirconia fibers.…”

Section: Methodsmentioning

confidence: 99%

“…The electrospun fibers were calcined in air flow (150 mL•min -1 STP) at 500 ºC in a conventional tubular furnace, with a heating rate of 10 ºC•min -1 followed by 6 h dwell time in order to eliminate the organic part and the remaining solvent, and to stabilize the zirconia fibers. The final vanadium mass concentration obtained by XPS analysis of Zr-V2.5, Zr-V5.0 and Zr-V6.4 samples was reported to be 2.7, 4.9 and 6.0%, respectively [48][49] .…”

Section: Methodsmentioning

confidence: 99%

“…The catalysts were prepared by electrospinning. The synthesis of the solutions as well as the electrospinning equipment and procedure and the XPS analyses have been previously described. , Sample synthesis and pretreatment and XPS results are detailed in the Supporting Information (SI). The final vanadium mass concentration on the surface of Zr–V2.5, Zr–V5.0, and Zr–V6.4 samples obtained by XPS analysis was reported to be 2.7, 4.9, and 6.0%, respectively. , …”

Section: Methodsmentioning

confidence: 99%

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Operando Reactor-Cell with Simultaneous Transmission FTIR and Raman Characterization (IRRaman) for the Study of Gas-Phase Reactions with Solid Catalysts

et al. 2020

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Raman and transmission FTIR spectroscopic techniques have been coupled in a new homemade reactor-cell designed in a joint CSIC-UNICAEN collaboration. The set-up is easily adapted to any FTIR and fibre-coupled Raman spectrometers and gas analysis techniques. Simultaneous operando FTIR and Raman spectroscopic measurement allow complementary characterization of adsorbed species, reaction intermediates, and structural properties of the catalyst. This system was validated with the study of vanadium based catalysts during propane OxyDeHydrogenation (ODH). The combined use of both spectroscopies with gas analysis techniques to measure the activity contributes to the understanding of propane ODH and the identification of the role of different oxygen species bound to vanadium sites. For example, the simultaneous characterization of the catalyst under the same conditions by IR and Raman confirms that the V=O mode has the same frequency in both spectroscopies, and that bridging oxygen sites (V-O-V, V-O-Zr) present higher activity than terminal V=O bonds. These results demonstrate the high potential of the new simultaneous transmission IR-Raman operando rig to correlate the activity and the structure of catalysts, thus assisting the rational design of catalytic processes.

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Section: ) Studying Catalysts During Reactionsupporting

confidence: 90%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%