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Showing 1 to 5 of 5 for “"NH3 adsorption"”.
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Catalytic and adsorbent properties of solid acid catalysts studied by ammonia adsorption microcalorimetry
… pore volumes, and crystallinity from nitrogen adsorption, powder x-ray diffraction, cation exchange capacity, and elemental analysis. The acidity of these catalysts has been studied by NH3 adsorption microcalorimetry. NH3 is assumed to adsorb stoichiometrically on surface acid sites and the …
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Surface chemistry design and characterization of anion exchange and activated carbon fibers for critical contaminants removal
… carbon fiber composites (ACFCs) for removal of NH3 from air. Three series of materials were synthesized and modified, namely Polyvinyl alcohol (PVA) based Chemically Activated Carbon Fibers (CAFs) with optimized activation temperatures, Kynol based Activated Carbon Fibers (ACFs) and Phenolic …
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Investigation of NH3 and no adsorption over Cu/SAPO-34 and Cu/AlOo3 catalysts for NH3–SCR system
… (NH_3, NO, combined NH_3-NO) to evaluate the adsorption of ammonia and nitric oxide. Cu/SAPO-34 catalyst has shown higher ammonia adsorption capacity compared to Cu/Al_2O_3 catalyst. The Cu/SAPO-34 adsorption is enhanced due to the strong acidity and high surface area of SAPO-34 molecular …
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Poisoning and Sulfation on Vanadia SCR Catalyst
… and sulfation and tungsten increase ammonia adsorption intensity on Brønsted acid sites. Activity measurements by MS showed K, Na, and Ca poison SCR catalysts, and sulfation and tungsten enhance SCR NOx reduction activity. Both the decrease and increase of catalyst activity arise from the …
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Hybrid organic/inorganic nanotubes of imogolite type
… on the long-range order and morphology; v) N2 adsorption at -196°C, yielding specific surface area and pore size distribution. Adsorptive properties were tested towards CH4 and CO2 by means of volumetric measurments. Curve-fits obtained by assuming a Langmuir model of CH4 adsorption in the 0-35 …