US 12,186,701 B1
Process for removing hydrogen sulfide from sour gases with ZIF-8 layered triple hydroxide/oxide composites
Sagheer A. Onaizi, Dhahran (SA)
Assigned to KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed by KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed on Jun. 17, 2024, as Appl. No. 18/745,498.
Int. Cl. B01D 53/10 (2006.01); B01J 20/06 (2006.01); B01J 20/22 (2006.01)
CPC B01D 53/10 (2013.01) [B01J 20/06 (2013.01); B01J 20/226 (2013.01); B01D 2253/108 (2013.01); B01D 2253/1124 (2013.01); B01D 2253/25 (2013.01); B01D 2253/306 (2013.01); B01D 2253/308 (2013.01); B01D 2253/311 (2013.01); B01D 2257/304 (2013.01); B01J 2220/46 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for removing hydrogen sulfide (H2S) from a H2S-containing gas composition, comprising:
charging an aqueous media to a reactor under continuous agitation;
dispersing particles of a composite in the aqueous media to form a composite mixture;
continuously agitating the composite mixture;
introducing the H2S-containing gas composition to the reactor containing the composite mixture under continuous agitation and passing the H2S-containing gas composition through the composite mixture; and
adsorbing and removing H2S from the gas composition by the composite mixture to form a purified gas composition,
wherein the composite comprises:
a CuMnAl layered triple oxide (LTO); and
zeolitic imidazolate framework-8 (ZIF-8) nanoparticles,
wherein the ZIF-8 nanoparticles are dispersed between layers of the CuMnAl LTO, and
wherein the composite is made by a method comprising:
preparing a CuMnAl layered triple hydroxide (LTH);
calcining the CuMnAl LTH to form a CuMnAl LTO; and
mixing the CuMnAl LTO with precursors of the ZIF-8 to form the composite.