Hydrogen sulfide adsorption

Hydrogen Sulfide Adsorption and Decomposition on the Clean and S-Covered Ft(lll) Surface... 

Galea NM, Kadantsev ES, and Ziegler T. Studying reduction in solid oxide fuel cell activity with density functional theory-effects of hydrogen sulfide adsorption on nickel anode surface. JPhys Chem C 2007 111 14457-14468. 

The hydrogen sulfide adsorption on the HKUST-l/GO composites was only studied in moist conditions [44]. The choice was based on the presence of water in the ambient air and on the extensive studies of H2S reactive adsorption on carbonaceous materials where water was important for dissociation of hydrogen sulfide before its further reaction with surface active sites [5]. Here up to 20 wt% of H2S was adsorbed in the composite with the smallest content of GO. [44]. An increase in the GO content resulted in a decrease in the capacity but nevertheless it was higher than that on MOF... 

Petit C, Mendoza B, Bandosz TJ. Hydrogen sulfide adsorption on metal-organic frameworks and metal-organic frameworks / graphite oxide composites, ChemPhysChem 2010,11, 3678-3684. 

Infrared spectroscopic measurement was performed by Jasco FT-IR 230S using an in-situ cell. Hydrogen sulfide adsorption was carried out by introducing 40 Torr of hydrogen sulfide into the cell at 200°C, followed by evacuation at the same temperature for 0.5 hour. Pyridine adsorption was performed by introducing 10 Torr of pyridine vapour into the cell at 150°C, followed by evacuation at the same temperature for 0.5 hour. 

Bagreev, A. and Bandosz, T.J. (2002). A role of sodium hydroxide in the process of hydrogen sulfide adsorption/oxidation on caustic-impregnated activated carbons. Ind. Eng. Chem. Res., 41, 672—9. 

Tanada, S., Kita, T., Boki, K., and Kozaki, Y. (1985). Preparation of narrow pores carbon suitable for hydrogen sulfide adsorption. /. Environ. Sci. Health, A20, 87-96. 

Le Lauch, L.M., Subrenat, A., and Le Cloirec, P. (2003). Hydrogen sulfide adsorption and oxidation onto activated carbon cloth applications to odorous gaseous emission treatments. Langmuir, 19, 10869—77. 

Cal,. M.P., Strickler, B.W., and Lizzio, A.A. (2000). High temperature hydrogen sulfide adsorption on activated carbon. I. Effect of gas composition and metal addition. Carbon, 38, 1757-65. 

Adsorption of Hydrogen Sulfide. IR studies of hydrogen sulfide adsorption on alumina suggest that (18, 19) hydrogen bonding produces the following structure ... 

Irreversible adsorption of hydrogen sulfide has been reported (2, 20). It is proposed that hydrogen sulfide adsorption could also take place via O2- sites ... 

In all cases, a hydrogen sulfide adsorption-desorption unit will have to be included in the process following the pyrolysis step for gas purification and sulfur recovery for pulping. 

Although direct relationship between the porosity of carbons and their hydrogen sulfide adsorption capacity was not established, the pore sizes should play a role in energetics of physical... 

The justification for the threshold in surface pH is based on the steps of hydrogen sulfide adsorption/oxidation on unmodified carbons [87, 94], They are as follows (1) H2S adsorption on the carbon surface, (2) its dissolution in a water film, (3) dissociation of H2S in an adsorbed state in the water film, (4) and surface reaction with adsorbed oxygen. 

Mechanism of hydrogen sulfide adsorption oxidation on activated carbon surfrice... 

Hydrogen pretreatment of the M0S2 resulted in a H2 uptake of x 10 H/mg i.e., a 1 4 H (Ssurf + Mogurf) ratio. It is not known how far this uptake was irreversible. The H2S uptake became strongly reduced in that it was only 1.98 x 10 molecules of H2S/mg, i.e., about 23% of the value at saturation of the fresh sample. This was explained by the authors with the shift of equilibrium of hydrogen sulfide adsorption... 

Okamoto, Y., Ohhara, M., Maezawa, A., Imanaka, T. Teranishi, S. Hydrogen sulfide adsorption on alumina, modified alumina, and molybdenum trioxide/alumina. J. Phys. Chem. 90, 2396-2407 (1986). 

Figure 12-25. Equilibrium isotherms for hydrogen sulfide adsorption on molecular sieves, types 4A, 5A, and 13X. DataofUOP(1S93A)...

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