Reactions catalyzed within inorganic and organic materials and at electrochemical interfaces commonly occur at high coverage and in condensed media, causing turnover rates to depend strongly on interfacial structure and composition, 3731-53-1, Name is Pyridin-4-ylmethanamine, SMILES is NCC1=CC=NC=C1, in an article , author is Liu, Yongjin, once mentioned of 3731-53-1, Category: pyridine-derivatives.
Effect of Ordered Mesoporous Alumina Support on the Structural and Catalytic Properties of Mn-Ni/OMA Catalyst for NH3-SCR Performance at Low-temperature
Mn-Ni oxides supported on ordered mesoporous alumina (OMA) catalysts were applied to the NH3-SCR of NOx at low-temperature compared with Mn-Ni oxides supported on commercial gamma-Al2O3. The NOx conversion and N-2 selectivity of Mn-Ni/OMA were superior to the Mn-Ni/gamma-Al2O3 in the temperature window of 90 similar to 240 degrees C. BET, XRD, NH3-TPD, NO+O-2-TPD, Pyridine-IR, H-2-TPR, and XPS were performed to characterized the physicochemical properties of the catalysts. The characterization results manifested that supports conduct a significant part on the structural and catalytic properties of catalysts for NH3-SCR performance. Compared with Mn-Ni/Al2O3, the super SCR performances of Mn-Ni/OMA could be ascribed to not only the higher dispersion of MnOx but also more abundant Lewis acid sites, and the increase in redox capacity since the extremely primary MnO2 phase on catalyst’s surface. Furthermore, in situ DRIFTs were conducted to detect the SCR-reaction mechanism over the two catalysts. Results demonstrate that although the OMA support can greatly enhance the catalytic activity of Mn-Ni/OMA catalysts, the reaction mechanism over Mn-Ni/OMA does not alter in comparison with Mn-Ni/Al2O3. Namely, the concurrence of Langmuir-Hinshelwood (L-H) and Eley-Rideal (E-R) mechanism, among which the E-R mechanism plays a dominant role.
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Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem