PtM/Ba/Al2O3Ce0.6Zr0.4O2: Influence of Synergetic Interactions between Transition Metal and Platinum on NOx Storage and Reduction

Chen, Zhilin; Wang, Xiuyun; Wang, Ruihu

doi:10.1002/cplu.201402066

Cited by 5 publications

(2 citation statements)

References 55 publications

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“…For all samples, NO x removal efficiency was lowered in comparison with SO 2 -absent samples, being ascribed to the competitive adsorption of SO 2 with NO x on the storage components. While, it is noted that the degree of sulfur poisoning was apparently retarded over Pt/Co/Ba/Al and Pt/Mn/Ba/Al catalysts, being consistent with previous report that Co, Mn addition could enhance the catalysts' sulfur resistance [37].…”

Section: Catalytic Propertiessupporting

confidence: 81%

Non-thermal plasma enhanced NSR performance over Pt/M/Ba/Al2O3 (M = Mn, Co, Cu) catalysts

Bai

Zhang

Chen

et al. 2017

Chemical Engineering Journal

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Non-thermal plasma enhanced NSR performance over Pt/M/Ba/Al 2 O 3 (M = Mn, Co, Cu) catalysts, Chemical Engineering Journal (2016), doi: http://dx. AbstractTo improve the NO x storage capacity (NSC) of lean NO x trap (LNT) catalysts of the Pt/BaO/Al 2 O 3 type, the catalyst was doped with redox active transition metals of Mn, Co, or Cu, respectively. Due to differences in the chemical states of the doped metals, the catalysts exhibited different catalytic behaviors. Co and Mn doped catalysts showed improved NO to NO 2 oxidation ability, and therefore enhanced NO x storage capacities, which led to the increased cycle averaged NO x conversions as compared to a Pt/Ba/Al 2 O 3 reference. However, being limited by NO x reduction in rich phase, the NO x conversions were still poor at low temperatures (<250 o C). By employing an H 2 -plasma in rich phase to assist NO x reduction, NO x conversions were greatly enhanced especially for low temperatures (≤250 o C). The best properties were achieved over Pt/Co/Ba/Al 2 O 3 catalyst which exhibited NO x conversions higher than 80% in the whole temperature range (150 to 350 o C) and best SO 2 resistance abilities.

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Section: Catalytic Propertiessupporting

confidence: 81%

Non-thermal plasma enhanced NSR performance over Pt/M/Ba/Al2O3 (M = Mn, Co, Cu) catalysts

Bai

Zhang

Chen

et al. 2017

Chemical Engineering Journal

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“…They found that the catalytic activity of CeO 2 was greatly enhanced by the support of CuO on CeO 2 owing to the synergistic catalytic effect at the CeO 2 and CuO phase interfaces 10. PtM/Ba/Al 2 O 3 Ce 0.6 Zr 0.4 O 2 was synthesized by Wang’s group and the strong synergetic interactions between the transition metal and platinum were found to be very important in NO x storage and reduction 11. Luo et al.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Catalytic Performance of (CuO)_x/Ce_0.9Cu_0.1O₂ Nanospheres: Combined Contribution of the Synergistic Effect and Surface Defects

Yang

Pan

et al. 2015

ChemPlusChem

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Copper‐modified ceria catalysts, (CuO)x/Ce0.9Cu0.1O2 nanospheres, for low‐temperature CO oxidation were fabricated simply by using the hydrothermal synthesis of Cu‐doped CeO2 (Ce0.9Cu0.1O2) nanospheres followed by deposition of CuO over Ce0.9Cu0.1O2. The X‐ray diffraction and electron spectroscopy characterizations demonstrated that the as‐prepared nanospheres were composed of cubic CeO2 and monoclinic CuO with a typical diameter of around 70 nm. Moreover, the X‐ray photoelectron spectroscopy (XPS) analysis illustrated the coexistence of Ce4+/Ce3+ and Cu2+/Cu+ redox couples in (CuO)x/Ce0.9Cu0.1O2 and H2 temperature‐programmed reduction (TPR) measurements indicated the excellent reduction behavior of the catalyst. The Raman spectra illustrated the oxygen vacancy in (CuO)0.3/Ce0.9Cu0.1O2, and diffuse‐reflectance infrared Fourier transform spectroscopy (DRIFTS) demonstrated the stable existence of Cu+ species during CO oxidation. The (CuO)x/Ce0.9Cu0.1O2 nanospheres showed excellent catalytic activity toward CO oxidation in normal feed gas (volume ratio of CO/O2/N2=1:10:89) at ambient temperature. Catalytic tests revealed that the proportion of CuO in the final product has a strong influence on the resultant catalytic activities. The (CuO)x/Ce0.9Cu0.1O2 nanospheres hold great application potential as new catalysts for CO oxidation.

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Ag/bauxite catalysts: Improved low-temperature activity and SO2 tolerance for H2-promoted NH3-SCR of NO

Wang¹,

Jiang²,

Wang³

et al. 2015

Applied Catalysis B: Environmental

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PtM/Ba/Al₂O₃Ce_0.6Zr_0.4O₂: Influence of Synergetic Interactions between Transition Metal and Platinum on NO_x Storage and Reduction

Cited by 5 publications

References 55 publications

Non-thermal plasma enhanced NSR performance over Pt/M/Ba/Al2O3 (M = Mn, Co, Cu) catalysts

Non-thermal plasma enhanced NSR performance over Pt/M/Ba/Al2O3 (M = Mn, Co, Cu) catalysts

Enhanced Catalytic Performance of (CuO)_x/Ce_0.9Cu_0.1O₂ Nanospheres: Combined Contribution of the Synergistic Effect and Surface Defects

Ag/bauxite catalysts: Improved low-temperature activity and SO2 tolerance for H2-promoted NH3-SCR of NO

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PtM/Ba/Al2O3Ce0.6Zr0.4O2: Influence of Synergetic Interactions between Transition Metal and Platinum on NOx Storage and Reduction

Cited by 5 publications

References 55 publications

Non-thermal plasma enhanced NSR performance over Pt/M/Ba/Al2O3 (M = Mn, Co, Cu) catalysts

Non-thermal plasma enhanced NSR performance over Pt/M/Ba/Al2O3 (M = Mn, Co, Cu) catalysts

Enhanced Catalytic Performance of (CuO)x/Ce0.9Cu0.1O2 Nanospheres: Combined Contribution of the Synergistic Effect and Surface Defects

Ag/bauxite catalysts: Improved low-temperature activity and SO2 tolerance for H2-promoted NH3-SCR of NO

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PtM/Ba/Al₂O₃Ce_0.6Zr_0.4O₂: Influence of Synergetic Interactions between Transition Metal and Platinum on NO_x Storage and Reduction

Enhanced Catalytic Performance of (CuO)_x/Ce_0.9Cu_0.1O₂ Nanospheres: Combined Contribution of the Synergistic Effect and Surface Defects