Hydrogen sulfide adsorption on faujasite-type zeolites with systematically varied Si-Al ratios

Journal Article · Mon May 01 00:00:00 EDT 1978 · J. Colloid Interface Sci.; (United States)

DOI:https://doi.org/10.1016/0021-9797(78)90394-6· OSTI ID:5135265

Karge, H G; Rasko, J

At low coverages, hydrogen sulfide adsorbed dissociatively on the faujasite-type X and Y zeolites; the amount of dissociation was proportional to the number of unlocated sodium ions in the supercages; the dissociated hydrogen produced hydroxyl groups with IR bands at 3650 and 3580 cm/sup -1/, which exhibited, at least in part, Broensted acidity. The SH groups gave IR bands at 2560 cm/sup -1/. Dissociative hydrogen sulfide adsorption decreased with increasing silica-alumina ratio and was negligible at ratios above 2.5:1. Nondissociative physical adsorption increased with increasing pressure, adsorbate coverage, and silica-alumina ratio. Preliminary oxidation rate studies of adsorbed hydrogen sulfide showed that the process is, at least initially, controlled by intracrystalline diffusion on Linde NaY zeolite; the rate decreased much more with time on NaX than NaY zeolite.

• Research Organization: Max-Planck-Ges., Berlin
• OSTI ID: 5135265
• Journal Information: J. Colloid Interface Sci.; (United States), Vol. 64:3
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
FAUJASITE
SORPTIVE PROPERTIES
HYDROGEN SULFIDES
ADSORPTION
ALUMINIUM COMPOUNDS
CHEMICAL REACTIONS
SILICON COMPOUNDS
ZEOLITES
CHALCOGENIDES
HYDROGEN COMPOUNDS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
MINERALS
SILICATE MINERALS
SORPTION
SULFIDES
SULFUR COMPOUNDS
SURFACE PROPERTIES
400301* - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)