Development of modified zeolite for adsorption of mixed sulfur compounds in natural gas by combination of ion exchange and impregnation

Highly efficient oxidative removal of thiophene at ambient temperature over synthetic MnO2/zeolite nanocomposites

“…To increase the zeolite efficiency in adsorptive desulfurization, two modification methods, i.e., metal impregnation and ion exchange, have been considered. 1 It was reported that the metal ion-exchange process can change the acidity of zeolites, which leads to modification of their catalytic activity. 48 To evaluate the effect of this parameter on the Th removal efficiency, clinoptilolite underwent ion exchange with Cu 2+ ions.…”

“…Over the past few years, there has been ongoing research in various countries worldwide on the production of clean (or ultra-low sulfur) fuels. [1][2][3][4] Sulfur compounds commonly exist in natural gas, petroleum gas, and biogas, but at very low levels due to their odorous, corrosive, and environmentally harmful characteristics. [4][5][6][7][8] Thiophene (Th), a sulfur compound consisting of five-membered aromatic heterocycles, is found in some natural products and biologically active compounds.…”

“…[36][37][38][39] Zeolites, a group of the microporous crystalline aluminosilicate family, also known as 'molecular sieves,' are attractive for adsorption of toxic gases and metal ions (e.g., Cr 3+ , Ni 2+ , Zn 2+ , Cu 2+ , and Cd 2+ ) due to their highly developed porosity, large surface area, and adjustable surface properties. 1,2,40 It was reported that natural and synthetic zeolites are potential candidates for removing SO x , NO x , CO x , H 2 S, and storing H 2 gas. 41,42 The modification of zeolite substrates with catalytic nanoparticles can lead to great improvement in the adsorption performance of zeolites.…”

“…, Cr 3+ , Ni 2+ , Zn 2+ , Cu 2+ , and Cd 2+ ) due to their highly developed porosity, large surface area, and adjustable surface properties. 1,2,40 It was reported that natural and synthetic zeolites are potential candidates for removing SO x , NO x , CO x , H 2 S, and storing H 2 gas. 41,42…”

Kaolin-Derived Porous Silico-Aluminate Nanoparticles as Absorbents for Emergency Disposal of Toluene Leakage

“…Therefore, zeolite molecular sieves have been widely used in the chemical industry as adsorbents [ 30 ]. At present, various zeolite molecular sieves are often used as selective adsorbents for the adsorption and separation of gas organic molecules [ 31 , 32 , 33 ]. However, due to factors such as economic cost and processing, the application of zeolite molecular sieves in the emergency disposal of organic pollutants in water has rarely been reported.…”