Conclusions The reason could be assigned to the suitable acidic and alkaline strength and quantity distributions on the surface of Cluster Al2O3. Meanwhile, smaller-particle MoS2 has more edge-exposed active sites, whi...
At present, DES has been widely used in the removal of acidic gases such as SO2, CO2 and NOx, and shows good absorption and recyclability. What's more, DES, as an effective solvent for selective absorption of H2S, has gradually attracted the attention of academia and industry. However, ...
S1 to show a more visible variation of sulfur composition. The XPS results in Fig. 5a, b show that H2O mainly stimulated the conversion of H2S to an end product of S0 to improve the H2S removal on the DFW-BC. This explains why its pH value was not any lower than that of the dry ...
MP can be utilized to synthesize high-value bio-based products, such as food and feed additives, in a more effective and sustainable way than other alternative plant or animal based protein sources [5]. Nevertheless, first-generation MP production, relying on dedicated substrates (e.g., sugar...
However, in the case of weak acidic conditions (pH < 7.0), the fluo- rescence turn-on signal is marginally lower, which was commonly observed in nucleophilic-reaction probes29–33. To test the biological applicability of the dual-reactable probe 1, we examined whether 1 can be used ...
Increasing the methane partial pressure results in a pronounced decrease of the solubility of the acidic component. This is line with the results of the experiments carried out by Addicks (2002). He measured the solubility of CO2 and CH4 in aqueous MDEA at pressures up to 200 bar. At the ...
Nevertheless, the simple construction of composite heterojunctions, in which α-Fe2O3 is direct contact with the acidic gas (H2S) in the gas–solid reaction system, can lead to poisoning and deactivation. Against this backdrop, it is feasible to use COFs with high stability as a shell and ...
Consequently, it is apparent that the acidity of mixtures at x(H2O) ≥ 80% is improved after oxidative absorption of H2S and discharge of volatile HCl from the acidic mixtures. Furthermore, as shown in Figure 5c,d, homogeneous mixtures at x(H2O) = 90% after oxidative-absorption of H2S ...
Figure 1 reveals that the Nf-TNPP-film-based OWG sensor is more sensitive and more stable toward EDA and H2S than the TNPP-film-based sensor. This is ascribable to electrostatic interactions between the four -NO2 functional groups on the porphyrin and the -SO3− groups of the Nafion ...
More than half of oil well tubing failures are caused by corrosion-related problems [1]. Currently, about 1/3 of oil and gas fields in the world contain H2S. For example, the newly developed oil and gas fields in Sichuan and Xinjiang in China have very high contents of H2S and CO2, ...