Density functional theory is used to calculate energy differences for two surface reactions on the Pt{110}($1\times 2$) surface : SO${}_2$ $\leftrightarrow$ SO + O and SO${}_3$ $\leftrightarrow$ SO${}_2$ + O, first. Formation of SO${}_3$ is preferred energetically. Second, several pathways for the formation of SO${}_4$H${}_2$ are compared from co-adsorbed SO${}_3$ and H${}_2$O on the mentioned surface. Results reveal an energy difference (endothermic process) of $\approx$1.5 eV. However, this value decreases to 1.17 eV when the van der Waals interactions are included. Increasing the coverage of H${}_2$O to four molecules per SO${}_3$ molecule, increases the energy difference to 1.70 eV. However, the energy difference is decreased to 1.06 eV when van der Waals interactions are taken into account in the calculations.

密度泛函理论用于计算Pt {110}（$\mathrm{1个}\times 2$）表面：SO${}_2$ $\leftrightarrow$ SO + O和SO${}_3$ $\leftrightarrow$ 所以${}_2$+ O，首先。SO的形成${}_3$在能量上是优选的。二，SO形成的几种途径${}_4$H${}_2$ 从共吸附SO进行比较${}_3$ 和H${}_2$提到的表面上的O。结果表明，能量差（吸热过程）为$\approx$1.5 eV。但是，当包括范德华相互作用时，该值降至1.17 eV。增加H的覆盖范围${}_2$每个SO O到四个分子${}_3$分子，将能量差增加到1.70 eV。但是，在计算中考虑了范德华相互作用时，能量差降低到1.06 eV。