Abstract
Activated carbon was modified with γ-Al2O3 by the impregnation precipitation method, and the obtained Al2O3-AC was characterised by a surface area and pore size analyser, transmission electron microscopy and X-ray diffraction analyser. The results suggested that the content of γ-Al2O3 on the carbon surface was an important factor for the specific surface area. Transmission electron microscopy and X-ray diffraction analysis indicated that with an increase of the content of γ-Al2O3, more γ-Al2O3 wires or bars could be observed. Rosin disproportionation reaction revealed that the Pd catalyst prepared with Al2O3-AC as support had higher catalytic activity than that using the original carbon. With an increase in the content of γ-Al2O3, the maximum catalytic activity was achieved when the γ-Al2O3 content increased to 10 wt-%, while the catalytic activity basically remained unchanged when the content of γ-Al2O3 varied from 10 to 15 wt-%.