Steam reforming of ethanol over mesoporous Rh/CeZrO2: Mechanistic evaluation using in situ DRIFT spectroscopy

ABSTRACTCatalytic monoliths loaded with ZnO-supported Co-Fe catalysts were prepared in one step by the in situ urea method and tested in the ethanol steam reforming reaction to produce hydrogen. The most active and selective formulation was attained with a Fe/Co molar ratio between 0.05 and 0.1, which showed negligible amounts of methane among the reaction products, thus offering an active and selective material for the low-temperature steam reforming of ethanol for small-scale energy applications.

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In situ DRIFT-mass spectrometry study of the ethanol steam-reforming reaction over carbonyl-derived Co/ZnO catalysts

Journal of Catalysis ◽

10.1016/j.jcat.2004.08.024 ◽

2004 ◽

Vol 227 (2) ◽

pp. 556-560 ◽

Cited By ~ 140

Author(s):

Jordi Llorca ◽

Narcís Homs ◽

Pilar Ramirez de la Piscina

Keyword(s):

Mass Spectrometry ◽

Steam Reforming ◽

Ethanol Steam Reforming ◽

Mass Spectrometry Study ◽

In Situ Drift ◽

Ethanol Steam

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Spectral reconstruction of surface adsorbed species using band-target entropy minimization. Application to CO and NO reaction over a Pt/γ-Al2O3 catalyst using in situ DRIFT spectroscopy

Physical Chemistry Chemical Physics ◽

10.1039/b714544f ◽

2008 ◽

Vol 10 (24) ◽

pp. 3535 ◽

Cited By ~ 8

Author(s):

Srilakshmi Chilukoti ◽

Effendi Widjaja ◽

Feng Gao ◽

Huajun Zhang ◽

Bruce G. Anderson ◽

...

Keyword(s):

Drift Spectroscopy ◽

Adsorbed Species ◽

Entropy Minimization ◽

Spectral Reconstruction ◽

In Situ Drift ◽

Al2o3 Catalyst

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?In-situ? drift spectroscopy of intracavity chemistry of carbonyl complexes in zeolites

Microchimica Acta ◽

10.1007/bf01349733 ◽

1988 ◽

Vol 95 (1-6) ◽

pp. 113-117 ◽

Cited By ~ 4

Author(s):

Eric Denneulin ◽

Claude Br�mard ◽

Christophe Depecker ◽

Pierre Legrand

Keyword(s):

Carbonyl Complexes ◽

Drift Spectroscopy ◽

In Situ Drift

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Low Temperature HCHO Detection by SnO2/TiO2@Au and SnO2/TiO2@Pt: Understanding by in-situ DRIFT Spectroscopy

Nanomaterials ◽

10.3390/nano11082049 ◽

2021 ◽

Vol 11 (8) ◽

pp. 2049

Author(s):

Abulkosim Nasriddinov ◽

Vadim Platonov ◽

Alexey Garshev ◽

Marina Rumyantseva

Keyword(s):

Low Temperature ◽

Chemical Precipitation ◽

Surface Reactivity ◽

Precipitation Method ◽

Impregnation Method ◽

Drift Spectroscopy ◽

Au Nps ◽

Sensor Properties ◽

In Situ Drift

In this work we analyze the effectiveness of decoration of nanocrystalline SnO2/TiO2 composites with gold nanoparticles (Au NPs) and platinum nanoparticles (Pt NPs) in enhancing gas sensor properties in low-temperature HCHO detection. Nanocrystalline SnO2/TiO2 composites were synthesized by a chemical precipitation method with following modification with Pt and Au NPs by the impregnation method. The nanocomposites were characterized by TEM, XRD, Raman and FTIR spectroscopy, DRIFTS, XPS, TPR-H2 methods. In HCHO detection, the modification of SnO2 with TiO2 leads to a shift in the optimal temperature from 150 to 100 °C. Further modification of SnO2/TiO2 nanocomposites with Au NPs increases the sensor signal at T = 100 °C, while modification with Pt NPs gives rise to the appearance of sensor responses at T = 25 °C and 50 °C. At 200 °C nanocomposites exhibited high selectivity toward formaldehyde within the sub-ppm concentration range among different VOCs. The influence of Pt and Au NPs on surface reactivity of SnO2/TiO2 composite and enhancement of the sensor response toward HCHO was studied by DRIFT spectroscopy and explained by the chemical and electronic sensitization mechanisms.

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