Some methods for the preparation of porous oil bearing material, such as saturated Water Cooking, mechanical pressing, pelleting with evaporating and extruding etc. are also reviewed.

• 同时,还介绍了几种多孔性物料的制备方法,如饱和水份蒸坯法、机械压榨法、造粒蒸发法以及膨化法等。