Chen, Linxiao published the artcileSulfate promotion of selective catalytic reduction of nitric oxide by ammonia on ceria, SDS of cas: 636-73-7, the publication is Catalysis Science & Technology (2019), 9(8), 1802-1815, database is CAplus.
NO selective catalytic reduction by NH3 (NH3-SCR) is a promising technol. to control NOx emissions. A recently discovered sulfate promotion effect in this reaction was thoroughly examined over CeO2. Sulfates from different organic S precursors all exhibited a promoting effect. Mechanistic studies generated a reaction network which included Langmuir-Hinshelwood and Eley-Rideal mechanisms. Sulfates were shown to be versatile promoters with multiple functions: tuning reactant adsorption toward a more balanced intermediate coverage by creating strong Lewis acid sites; facilitating *NH2 formation; and suppressing NH3 ammonia oxidation via oxygen deactivation. A comparison between sulfates and the classic inorganic promoter, FeOx, showed sulfates are more effective, particularly at high temperature This was mainly attributed to the high coverages of Eley-Rideal intermediates and low NH3 oxidation activity on sulfated CeO2. This work provided a fundamental understanding of the role of surface sulfates in NH3-SCR; essential under actual operation conditions. This understanding presents an opportunity to design future catalysts with high durability and low cost.
Catalysis Science & Technology published new progress about 636-73-7. 636-73-7 belongs to pyridine-derivatives, auxiliary class Pyridine,Sulfonic acid, name is Pyridine-3-sulfonic acid, and the molecular formula is C5H5NO3S, SDS of cas: 636-73-7.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem