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Hydrogen sulfide as one of the main pollutants of the atmosphere, is a kind of high foul odor stimulation toxic gases, long-term exposure would seriously endanger human health, causing corrosion of equipment and piping and catalyst poisoning. Even though industrial production exhaust also contains small amounts of hydrogen sulfide cause great pollution to the environment, and sometimes because of the presence of low concentrations of hydrogen sulfide waste a lot of resources. Therefore, reducing the emissions of hydrogen sulfide gas, to reduce the concentration to less emission standards, is the industry problems to be solved. In this paper, SBA-15 as a carrier, with different substances be modified, is committed to the development of new hydrogen sulfide gas adsorbent. Main contents include: a, SBA-15 Mesoporous Molecular Sieves: hydrothermal method used in this experiment to triblock copolymer P123 as a template agent, TEOS TEOS as silica source, prepared in acidic system mediated Mesoporous SBA-15. The resulting mesoporous pore size of 9.6 nm, specific surface area of 588.5 m2 / g, pore volume of 1.203 cm3 / g. Second, the base material and PEI-modified SBA-15 Adsorption of hydrogen sulfide: effects of different alkaline substances such as sodium carbonate, sodium bicarbonate, potassium carbonate, etc. modified SBA-15 hydrogen sulfide adsorption properties, as well as loads of different PEI influence on the adsorption amount of hydrogen sulfide. The results showed that: alkali substance modified SBA-15 adsorbed ineffective, PEI-modified SBA-15 loading exists an optimum value. Three different transition metal-modified SBA-15 Adsorption of hydrogen sulfide: the different transition metals (Zn, Fe, Mn, Cu, Co, and Ni) Modified SBA-15, wherein the zinc-modified SBA-15 Adsorption best performance; different zinc loadings Zn/SBA-15 different adsorption properties for hydrogen sulfide, zinc adsorption loading of 23% is best; also investigated doped with other metals for removal of hydrogen sulfide performance Zn/SBA-15 , the results showed that copper, iron and aluminum-doped improve Zn/SBA-15 adsorption properties of hydrogen sulfide doped magnesium detrimental to their hydrogen sulfide adsorption. Four, Zn/SBA-15 adsorption of hydrogen sulfide: Investigation raw gas concentration, flow rate, temperature, presence of oxygen, carbon dioxide and hydrogen sulfide adsorption properties of the Zn/SBA-15. The results showed that: the greater the concentration of the feed gas adsorption, the better, increasing the inlet gas flow rate is not conducive to the adsorption of hydrogen sulfide. In the temperature range of 288-573 K, adsorption decreased first and then increased at 433 K appeared lowest value. The feed gas of carbon dioxide and oxygen in the presence of hydrogen sulfide is not conducive to adsorption. V. Zn/SBA-15 adsorption mechanism was studied removal of hydrogen sulfide, hydrogen sulfide after that diffuses into the pores of mesoporous molecular sieves, the load on the surface of mesoporous molecular reaction of zinc oxide zinc sulfide. And the regeneration performance of Zn/SBA-15 results show that in the air atmosphere, Zn/SBA-15 adsorbent at 573 K for renewable, recycled sulfur capacity four transformation does not occur.
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