Abstract:
This work aimed to study the hydrogen production from sorption-enhanced steam reforming over Ni/Al2O3-CaMOF. Experiments were carried out using a two-stage fixed-bed reactor. The effect of CaMOF sorbents on hydrogen production by adsorption-enhanced steam reforming was compared with CaMOF sorbent, calcium oxide sorbent, and without sorbent. The result indicated that CaMOF sorbent significantly increased the composition and yield of hydrogen. Moreover, the effects of using three different plastics: polyethylene (PE), polypropylene (PP), and polystyrene (PS) used as co-feed with glycerol by Ni/Al2O3-CaMOF catalyst showed that the hydrogen production of glycerol with PE gave the highest composition and yield of hydrogen followed by polypropylene and polystyrene respectively. Furthermore, the effect of pyrolysis temperature at 600 and 700 °C using Ni/Al2O3-CaMOF catalyst found that hydrogen composition and hydrogen yield were increased up to 46.76 and 22.91 mmol/g. On the other hand, the effect of steam reforming temperatures at 700 and 800 °C was studied by using Ni/Al2O3-CaMOF catalyst. It was found that gas composition and hydrogen yield were decreased because of the sintering of catalysts.