The effect of heat released during CaO adsorption on sorption-enhanced steam methane reforming for hydrogen production is insufficiently understood. On this basis, Aspen Plus is used to study the effect of steam methane reforming on hydrogen production without/with CaO. At 700 °C and an O₂ inflow of 7 mol/h, the molar flow and molar percentages of H₂ are 20.62 and 67.35%. After adding CaO, at 700 °C with 4.5 mol/h of CaO, the heat release of CaO adsorption is 1.32 MJ/h, and the O₂ inflow reduces to 4.3 mol/h. The molar flow and molar percentage of H₂ are 22.80 mol/h and 85.94%. When 1.2 mol/h CH₄ is combusted for CaCO₃ decomposition in the calciner, regenerated CaO is transferred to the reforming reactor for calcium cycling, which consumes 2.4 mol/h of O₂. For the entire cycle, 6.7 mol/h of O₂.

In order to search for an economic process to produce conductive Al alloys, Al-Mg-Si-Cu alloys with different Cu-content based on AA 6063 were explored by applying a two-stage aging method. The formation of cluster (2) at high pre-aging temperature with a large volume fraction, can suppress the negative effect of cluster (1) on the bake-hardening. A proper two-step ageing process was selected as pre-aged at 363 K for 4h followed by isothermal ageing at 453 K. The Cu addition increases the quantity of solute atoms which also increase the electrical resistivity, and a proper content with Al-0.8Mg-0.58Si-0.6Cu (wt.%) can prolong the existence of meta-stable phase, which will guarantee the stability of elevated mechanical and electrical properties simultaneously. Furthermore, extra spots in SADPs caused by Cu addition indicate the close relationship between the structure of clusters/GP zones and the evolution of age-hardening phases.