초록 ▼

Novel activated carbon reticulated or unreticulated structures with interconnected cells are described. The carbon skeletal structures which are activated are derived from the carbonization of a parent homogeneous alloy of a furan resin with a polyurethane resin as a foam structure or as a skeletal

Novel activated carbon reticulated or unreticulated structures with interconnected cells are described. The carbon skeletal structures which are activated are derived from the carbonization of a parent homogeneous alloy of a furan resin with a polyurethane resin as a foam structure or as a skeletal structure with the foam membranes removed. Activation of the carbon structure during or after carbonization, is in contact with an oxidizing agent. The resulting activated carbon structures have unexpectedly high compressive strengths coupled with high activated surface areas per unit mass and volume and are particularly useful as adsorbents for chemicals in solution or as a gas.

대표청구항 ▼

In a carbon structure which has crack-free, interconnected strands of carbon forming a skeletal structure with or without carbon membranes on the strands and which is derived by carbonization from and which geometrically reproduces the identical form or the compressed form of a furan resin homogeneo

In a carbon structure which has crack-free, interconnected strands of carbon forming a skeletal structure with or without carbon membranes on the strands and which is derived by carbonization from and which geometrically reproduces the identical form or the compressed form of a furan resin homogeneously alloyed with a polyurethane resin as an interconnected strand parent skeletal structure with membranes on the skeletal structure from foaming or with the membranes removed, the improvement which comprises: an activated carbon skeletal structure derived by the heating of the carbon skeletal structure or the parent skeletal structure with carbonization in contact with a gaseous oxidizing agent which leaves the activated carbon structure substantially free of non-adsorbed contaminants derived from the oxidizing agent while retaining the geometry of the unactivated structure, wherein the oxidizing agent and heating are selected to produce a carbon structure with a minimum activated surface area of about 400 square meters per gram combined with a crushing strength of at least about 3.5 kg per square centimeter.