Excess renewable energy can produce hydrogen and together with carbon dioxide a closed energy loop can be formed through methanation (Power to Gas), which can be enhanced by in situ water sorption. Sorption causes a shift in equilibrium to favor methane production, while also decreasing secondary reactions and allowing operation at lower temperatures. In order to get suitable conditions for water sorption operating parameters were adjusted. The optimum temperature was 290 °C, avoiding high temperatures inside the catalytic bed due to the high exothermicity of the methanation; moreover, 15 bar of total pressure, 1.4 g catalyst and intermediate feedflows were found the best ones to obtain conversion close to equilibrium without external mass transfer resistance. The achieved hydrogen conversion was 92–94% with high selectivity, as no CO was detected and methane yield matched hydrogen conversion. The positive effect of water sorption was proved with Zeolite 4A, La₂O₃ and CaO sorbents.

过量的可再生能源会产生氢气，并与甲烷一起通过甲烷化作用（功率转化为气体）形成一个封闭的能量回路，这可以通过就地吸水来增强。吸附引起平衡的变化，有利于甲烷的产生，同时还减少了次级反应并允许在较低的温度下操作。为了获得合适的吸水条件，对运行参数进行了调整。最佳温度为290°C，避免了由于甲烷化反应放热大而导致催化床内部的高温。此外，发现总压力为15 bar，催化剂催化剂流量为1.4 g和中间进料流量为最佳，以获得接近平衡而没有外部传质阻力的转化率。在高选择性的条件下，氢的转化率为92–94％，因为未检测到CO，甲烷产率与氢转化率相当。沸石4A，La证明了水吸附的积极作用₂ O ₃和CaO吸附剂。