Catalytic Gasification of Glucose over Ni/Activated Charcoal in Supercritical Water

Gasification of glucose was carried out over the 16 wt % Ni/activated charcoal in supercritical water at 28 MPa. Effects of temperature (575−725 °C), feed concentration (0.3−0.9 M), and LHSV (6−24 h −1 ) were investigated on the product distribution. For comparison, the gasification experiments were performed with activated charcoal and also without catalyst. While the Ni/activated charcoal catalyst showed a good yield of hydrogen, it was deactivated due to coke deposition especially at low temperatures below 650 °C and also due to sintering of nickel particles.