การผลิตไฮโดรเจนจากแกซิฟิเคชันของใบอ้อยด้วยไอน้ำที่เพิ่มการดูดซับโดยใช้ Li4SiO4/MgO เเละ Li4SiO4/CaO / ต่อพงษ์ ศงสนันทน์ = Hydrogen production from sorption-enhanced steam gasification of sugarcane leaves using Li4SiO4/MgO and Li4SiO4/CaO / Torpong Songsanan
This work aimed to study CO2 sorption capacity of Li4SiO4 synthesized with different calcination temperatures. Experiments were performed using a fixed-bed reactor. Moreover, the influences of gasification temperature, mass ratio of Li4SiO4 to MgO and mass ratio of Li4SiO4 to CaO on gaseous products synthesized by steam gasification of sugarcane leaves were investigated in a two-stage fixed-bed reactor. The results indicated that the highest CO2 sorption capacity was 509.45 mmol/g-Li4SiO4 at the calcination temperature of 700 ºC. All mass ratios of Li4SiO4 to MgO for the mixed Li4SiO4/MgO catalysts exhibited positive effects during steam gasification of sugarcane leaves. The Li4SiO4 doped with 50 wt.% of MgO gave the maximum hydrogen yield of 12.47 mmol/g-sugarcane leaves. The Li4SiO4/CaO catalysts also indicated notable synergy during steam gasification of sugarcane leaves for all mass ratios of Li4SiO4 to CaO. The Li4SiO4 doped with 25 wt.% of CaO provided the maximum hydrogen yield of 12.18 mmol/g-sugarcane leaves. The gasification temperature extremely affected the gaseous products in the terms of yields and concentrations. The most suitable gasification temperature for steam gasification of sugarcane leaves using Li4SiO4/MgO or Li4SiO4/CaO was 700 ºC. CO2 absorption-desorption cycles of LHCAO25 at 700 ºC could be repeated 7 times with a slight drop in absorption capacity with the rate of 11.44 wt.% per cycle.