Two-stage adsorption mechanism revealed for dimethyl sulfide (DMS) in HY zeolite

Adsorption Mechanism of Benzene Alkylation System Catalyzed by an Acid Catalyst: Effect of Pressure

“…The loading dependence of PRO BEN (Figure 7) is similar to the MC simulation result for dimethyl sulfide in the HY zeolite. 18 Figure 8 further investigates the distribution of adsorbents inside the SC. As shown, PRO can occupy the Center SC region at high loadings, but it is a forbidden zone for BEN at all loadings.…”

Tuning Interaction and Diffusion for Dimethyl Disulfide Adsorption on Cu-BTC Frameworks via Low Transition-Metal Doping

“…Despite strenuous efforts to extend the energy substitution with renewable sources, fossil resources take the overwhelming share of the global energy supplies and remain the most attainable sources of energy in the next few decades . These fossil resources commonly contain a variety of organosulfur compounds such as mercaptans, thioethers, and disulfides, , which lead to concerns about environmental issues including ozone depletion, acid rain, reducing soil fertility, etc. , In addition, sulfur compounds contained in petrochemical products are harmful to equipment and downstream catalysts . Removal of these sulfides from fossil resources, therefore, is an urgent priority and has been attracting a wide range of research interests from academia and industry.…”

“…Among these approaches, ADS has become one of the most attractive methods owing to its competitive cost, promising efficiency, and mild operation conditions. , The high-performance adsorbents play a crucial role in determining desulfurization efficiency. Compared with these materials including zeolites, , activated carbon-derived adsorbents, and aerogel composites, metal–organic frameworks (MOFs), a new family of porous materials, have been developed as attractive candidates in the desulfurization field owing to their ultrahigh porosity, open metal sites, tunable structures, and exciting functionalities. , Specifically, both experimental findings and computational results have confirmed that the structure of copper-1,3,5-benzenetricarboxylic acid (Cu-BTC) has promising adsorption affinity to a number of organosulfur compounds. , According to the hard and soft acid–base theory, the sulfur atoms of organosulfur molecules could be combined with Lewis acid sites, such as transition-metal cations like Zn 2+ , Ag + , Cu 2+ , Cu + , and Ni 2+ . , Furthermore, π-complexation interaction between cations of d-block metals and sulfur species is another commonly accepted adsorption mechanism. , Additionally, the selective adsorption of sulfur compounds on transition-metal-involving structures can also be explained using the direct sulfur–metal (S–M) interaction mechanism. , …”

“…All samples were characterized using multiple techniques. Considering the high removal difficulty of disulfides from light hydrocarbons because of the low reactivity of disulfide compounds, , we performed the adsorption measurement using DMDS as the adsorbate to examine the adsorption performances of synthesized samples. Combined with computational simulation, the influences of low metal doping on structures and DMDS adsorption are discussed carefully.…”

“…4,11 The high-performance adsorbents play a crucial role in determining desulfurization efficiency. Compared with these materials including zeolites, 2,12 activated carbon-derived adsorbents, 13 and aerogel composites, 14 metal−organic frameworks (MOFs), a new family of porous materials, have been developed as attractive candidates in the desulfurization field owing to their ultrahigh porosity, open metal sites, tunable structures, and exciting functionalities. 15,16 Specifically, both experimental findings and computational results have confirmed that the structure of copper-1,3,5-benzenetricarboxylic acid (Cu-BTC) has promising adsorption affinity to a number of organosulfur compounds.…”