Objective The purpose of preparing solid base catalyst by pinewood template method is to change the structure of the catalyst and improve the performance of the catalyst.

Methods CaAl_2xO_3x+1 solid base catalyst was prepared by impregnating, drying and roasting using calcium acetate monohydrate, aluminum acetate dihydrate as raw materials and pinewood sawdust as template. The effects of Ca/Al molar ratio, calcination temperature and calcination time on the catalyst activity were investigated by single factor test.The catalysts and precursors were characterized by TG, XRD and SEM.

Results The optimum conditions for preparing CaAl_2xO_3x+1 solid base catalyst were as follows: molar ratio of Ca/Al 4∶1, calcination temperature 900℃, calcination time 7 h. When the temperature of catalyst precursor exceeds 900 ℃, the decomposition basically ends. The crystal phase structure of CaAl_2xO_3x+1 solid base catalyst is similar to that of pinewood sawdust template. It consists of a submicron particle with smooth surface composed of a large amount of amorphous substances (Al₂O₃, CaO or their compounds) and a small amount of crystals (CaO).

Conclusion The solid base catalyst with structure similar pinewood and high activity can be prepared by pinewood template method.