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The coadsorption of Hg⁰ and SO₃ on pure and Cu/Mn doped CeO₂(110) surfaces were investigated using the Density Functional Theory (DFT) method. A p (2 × 2) supercell periodic slab model with seven atomic layers was constructed to represent the CeO₂(110) surface. The results indicated that Hg⁰ physically adsorbed on the CeO₂(110) surface, while Hg⁰ chemically adsorbed on the Cu/Mn doped CeO₂(110) surface, which agree well with the experimental results that Cu and Mn doped CeO₂ greatly improved the Hg⁰ adsorption capacity of the adsorbent. The calculated results suggested that SO₃ more easily adsorbs on the above three surfaces than Hg⁰ due to the higher adsorption energy. The adsorption configurations and electronic structures indicated SO₃ reacted with O atoms of the surface to form SO₄²– species. Hence, SO₃ inhibits Hg⁰ adsorption on the CeO₂(110) surface by competing with Hg⁰ for surface lattice oxygen. In addition, SO₃ decreased the activity of the surface O atoms, which directly caused the negative effect on Hg⁰ adsorption.

A series of Mn-Ce/SAPO-34 catalysts were prepared to study the catalytic oxidisation of elemental mercury (Hg

The immunophilins are an important group of regulatory molecules in the immune system.

A series of Mn-Ce/SAPO-34 catalysts were prepared to study the catalytic oxidisation of elemental mercury (Hg0). Sulphur tolerance and SO3 formation over the catalyst were studied further. Hg0 was transported by compressed air from PSA Cavkit. NO, SO2, and NH3 are standard gases, and H2O is produced by gas carrying. Mn could incorporate into the cerium oxide lattice to form capping oxygen and well-dispersed high valance manganese ions after the addition of Ce, which was conducive to NO removal and Hg0 oxidisation. 9 Mn-9Ce showed the best performance regarding Hg0 conversion, achieving more than 92% Hg0 conversion efficiency at 50–300 °C. The sulphur resistance of the Mn-based catalyst was significantly improved after the addition of cerium due to the high affinity of Ce for SO2, and the relative content of HgSO4 was exceeded 72% on the 9 Mn-9Ce catalyst with SO2; SO3 formation over the 9 Mn-9Ce decreased by 17% compared with the 9 Mn. H2O not only reduced the available active site, but also decreased the oxidation rate of SO2. The active sites were preferentially occupied by NH3 rather than Hg0 and SO2, generated NH4+ occupied cation vacancies. Therefore, both H2O and NH3 have inhibitory effects on Hg0 conversion and SO3 formation.

Transponder landing system (TLS) was a transponder based precise approach landing system. This paper introduced a spatial smoothness technique based on MUSIC algorithm replaced the traditional phase interferometer angle measurement algorithm of TLS, then designed the antenna arrays according to the new algorithm and compared the feasibility, validity, resolving power and precision of the designed arrays to the ULA with same array elements by computer simulation. It effectively validated the usability and reliability of the designed arrays.