In this work, effect of solid-form catalysts was investigated on supercritical water gasification of glucose as a model for cellulosic materials. Catalysts examined included activated charcoal (AC), Ni/AC, Y-Ni/AC, Co-Ni/AC, and F-Ni/AC. The catalysts except for AC were prepared by an incipient wetness method. With the Y-Ni/AC catalyst, 0.6 M glucose was completely gasified in supercritical water at 650 ^oC, 28 MPa, and 0.05 ^-1 space velocity, while carbon gasification efficiency remained around 80 % with other catalysts. The Y-Ni/AC system also showed the highest activity for hydrogen production such that hydrogen content in the gaseous product reached almost 50 vol% which was compared with 40 vol% hydrogen from other catalytic tests. Meanwhile carbon monoxide content among the gaseous product from a Y-Ni/AC test was 1.3 vol% which is very low value compared with 56 vol% from a test without catalyst. Consequently, the Y-Ni/AC system catalyzes not only carbon gasification pathways but also water gas shift pathway. The study of variation in catalytic composition of Y-Ni/AC catalyst on glucose gasification revealed that an optimal weight ratio of Y to Ni is 0.1 to 0.25 per 1 g AC.