Spectroscopic characterization of surface species in deactivation of sol–gel Gd–Pd catalysts in NO reduction with CH4 in the presence of SO2

Watson, Junko M.

doi:10.1016/s0021-9517(02)00184-7

Cited by 3 publications

(2 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The peak located at 1050 cm –1 could be attributed to the cooperative effects of surface sulfite and sulfate. Finally, the band at 1448 cm –1 was previously found by Watson and Ozkan, but the band assignment was not given. According to previous studies, this band could be assigned to the SO 3 species.…”

Section: Resultsmentioning

confidence: 93%

Effects of Surface Features on Sulfur Dioxide Adsorption on Calcined NiAl Hydrotalcite-like Compounds

Zhao

Quan

et al. 2011

Environ. Sci. Technol.

View full text Add to dashboard Cite

The hydrotalcite-based NiAl mixed oxides were synthesized by coprecipitation and urea hydrolysis approaches and employed for SO₂ removal. The samples were well characterized by inductively coupled plasma (ICP) elemental analysis, X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and N₂ adsorption/desorption isotherm analyses. The acid-base properties were characterized by pyridine chemisorption and CO₂ temperature-programmed desorption (TPD). The calcined NiAlO from the urea method showed excellent SO₂ adsorption and its adsorption equilibrium showed a type I isotherm, which significantly improved the adsorption performance for low-concentration SO₂. Both the physical structure and the acidic-basic sites were found to play important roles in the SO₂ adsorption process. In situ Fourier transform infrared spectroscopy (FTIR) investigation revealed that adsorbed SO₂ molecules formed surface bisulfite, sulfite, and bidentate binuclear sulfate. The mechanisms for SO₂ adsorption and transformation are discussed in detail.

show abstract

Section: Resultsmentioning

confidence: 93%

Effects of Surface Features on Sulfur Dioxide Adsorption on Calcined NiAl Hydrotalcite-like Compounds

Zhao

Quan

et al. 2011

Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Various methods are available for the production of supported bimetallic catalysts such as co-precipitation [42], sol-gel [43], hydrothermal [44], impregnation-calcination [21], and electroless deposition [45].…”

mentioning

confidence: 99%

Catalytic performance of bimetallic Ni-Pt nanoparticles supported on activated carbon, gamma-alumina, zirconia, and ceria for hydrogen production in sulfur-iodine thermochemical cycle

Singhania

Krishnan

Bhaskarwar

et al. 2016

International Journal of Hydrogen Energy

View full text Add to dashboard Cite

Bimetallic Ni-Pt nanoparticles supported on four different supports (activated carbon (AC)) 1 , γ-alumina, zirconia, and ceria) were prepared by modified impregnation-reduction technique for decomposition of hydrogen iodide to hydrogen and iodine, in the thermochemical water-splitting sulfur-iodine (SI) cycle. The catalysts were characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM), and Brunauer-Emmett-Teller (BET) method to find their structure, morphology, and surface area, respectively. High metal dispersions (Ni-Pt) were obtained with particle sizes of the order of 10 nm or lesser, in the high-surface-area supports. The hydrogen iodide-decomposition results showed the following catalytic activity order of Ni-Pt nanoparticles on different supports: Ni(2.5%)-Pt(2.5%)/AC > Ni(2.5%)-Pt(2.5%)/γ-alumina > Ni(2.5%)-Pt(2.5%)/Zirconia > Ni(2.5%)-Pt(2.5%)/Ceria. Bimetallic Ni(2.5%)-Pt(2.5%)/AC also showed excellent stability for 100 h in the hydrogen iodide-decomposition reaction, and with a higher performance relative to the corresponding Pt supported catalyst under the same operating conditions.

show abstract

NO reduction by CH4 in the presence of excess O2 over Co/sulfated zirconia catalysts

Wang

Tang

et al. 2003

Applied Catalysis B: Environmental

View full text Add to dashboard Cite

Spectroscopic characterization of surface species in deactivation of sol–gel Gd–Pd catalysts in NO reduction with CH4 in the presence of SO2

Cited by 3 publications

References 32 publications

Effects of Surface Features on Sulfur Dioxide Adsorption on Calcined NiAl Hydrotalcite-like Compounds

Effects of Surface Features on Sulfur Dioxide Adsorption on Calcined NiAl Hydrotalcite-like Compounds

Catalytic performance of bimetallic Ni-Pt nanoparticles supported on activated carbon, gamma-alumina, zirconia, and ceria for hydrogen production in sulfur-iodine thermochemical cycle

NO reduction by CH4 in the presence of excess O2 over Co/sulfated zirconia catalysts

Contact Info

Product

Resources

About