Identification, Stability, and Reactivity of NOx Species Adsorbed on Titania-Supported Manganese Catalysts
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TLDR
In this paper, the properties of the NOx species obtained on NO adsorption and its coadsorption with O2 at room temperature on TiO2 and MnOx/TiO2 catalysts with two different manganese loadings have been studied by means of in situ Fourier transform infrared spectroscopy.About:
This article is published in Journal of Catalysis.The article was published on 2001-12-10 and is currently open access. It has received 228 citations till now. The article focuses on the topics: Manganese & Decane.read more
Figures
FIG. 4. (A) FTIR spectra of adsorbed NO/O2 mixture (28 Torr, NO : O2 = 1 : 4) at room temperature on the activated MnT–IE catalyst for various 
FIG. 3. FTIR spectra of adsorbed NO (10 Torr) at room temperature on the activated MnT–IE catalyst for various times and after evacuation at room temperature for 10 min. 
FIG. 9. FTIR spectra of the catalyst MnT–I taken after adsorption of NO/O2 mixture (40 Torr, NO : O2 = 1 : 4) at room temperature followed by 
FIG. 1. (A) FTIR spectra of adsorbed NO (10 Torr) at room temperatu room temperature for 10 min. (B) FTIR subtraction spectra obtained from 
FIG. 5. FTIR spectra of adsorbed NO (10 Torr) at room temperature oom temperature for 10 min. 
FIG. 8. FTIR subtraction spectra of the catalyst MnT–IE obtained fro Fig. 7.
Citations
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Journal ArticleDOI
MnOx-CeO2 mixed oxides prepared by co-precipitation for selective catalytic reduction of NO with NH3 at low temperatures
TL;DR: In this paper, a series of manganese-cerium oxide catalysts were prepared by co-precipitation method and used for low temperature selective catalytic reduction of NO x with ammonia in the presence of excess O 2.
Journal ArticleDOI
Deactivation of a Ce/TiO2 Catalyst by SO2 in the Selective Catalytic Reduction of NO by NH3
Wenqing Xu,Hong He,Yunbo Yu +2 more
TL;DR: In this article, the effects of SO2 poisoning on the selective catalytic reduction of NO by NH3 over a Ce/TiO2 catalyst were studied and the analytical results indicate that there was no obvious change in the crystal structure of the different samples; however, the specific area decreased with SO 2 poisoning time, and sulfates were formed and preferentially diffused from the surface to a bulk phase during the poisoning process.
Journal ArticleDOI
The role of cerium in the improved SO2 tolerance for NO reduction with NH3 over Mn-Ce/TiO2 catalyst at low temperature
TL;DR: In this article, in situ diffuse reflectance infrared transform spectroscopy (DRIFT) investigations were carried out to determine the role of Ceria in the improved resistance for a Ce-modified Mn/TiO 2 catalyst, which showed that SO x ad-species preferentially formed on Ceria as bulk-like sulfate species and lessened the sulfation of the main active phase (MnO x ) during low-temperature selective catalytic reduction (SCR) processes in the presence of SO 2.
Journal ArticleDOI
Low-temperature selective catalytic reduction of NO with NH3 over MnCe oxides supported on TiO2 and Al2O3: A comparative study
TL;DR: NH(3) temperature programmed desorption study proved that MnCe/TiO(2) was mainly Lewis acidic, while MnCE/Al( 2)O( 3) could provide more Brönsted acid sites and make a significant contribution to the improved NO conversion at higher temperature.
Journal ArticleDOI
In situ FTIR study of photocatalytic NO reaction on photocatalysts under UV irradiation
Jeffrey C.S. Wu,Yu-Ting Cheng +1 more
TL;DR: In this article, the photocatalytic reaction of nitric oxide (NO) on TiO 2 and transition metal-loaded M (Cu, V, and Cr)/TiO 2 catalysts was studied using in situ FTIR spectroscopy under UV irradiation.
References
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Journal ArticleDOI
Mechanism of the Selective Catalytic Reduction of NO by NH3over MnOx/Al2O3☆
TL;DR: In this paper, the adsorption of NO and NH3 on MnOx/Al2O3 catalysts, used for the low temperature selective catalytic reduction of NO, was studied separately by use of TPD (with labelled compounds) and FTIR.
Journal ArticleDOI
Mechanism of the Selective Catalytic Reduction of NO with NH3over MnOx/Al2O3
TL;DR: In this article, the mechanism of the selective catalytic reduction of NO with NH3 over low loaded MnOx/Al2O3 catalysts has been investigated using TPRD, FTIR, and step-response studies with labeled components.
Journal ArticleDOI
Silver-alumina catalysts for selective reduction of NO by higher hydrocarbons: structure of active sites and reaction mechanism
TL;DR: In this article, the selective catalytic reduction (SCR) of NO by higher alkanes (n-hexane and n-octane) was investigated by in situ FTIR spectroscopy.
Journal ArticleDOI
Alumina supported manganese oxides for the low-temperature selective catalytic reduction of nitric oxide with ammonia
TL;DR: In this article, the performance of 3 −15 wt.-% manganese oxides was studied at space velocities between 22 000 −116 000 h −1 and at standard conditions of 500 ppm NO, 550 ppm NH 3 and 2% O 2.
Journal ArticleDOI
NO reaction at surface oxygen vacancies generated in cerium oxide
Arturo Martínez-Arias,Javier Soria,José C. Conesa,Xosé L. Seoane,Adolfo Arcoya,Renato Cataluña +5 more
TL;DR: In this paper, the authors compared the results obtained by measuring the products of the reaction, performed at 323 K, between NO and CeO2 samples activated by previous heating under N2 flow.
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