Sparsely Pillared Organic-Inorganic Hybrid for Gas Adsorption

The patent changes the density parameter of the intercalated organic material by using long-chain dicarboxylic acids (sebacic acid, adipic acid, pimelic acid) that form sparse pillars rather than dense packing. This parameter change maintains structural stability while preserving large pore volumes and high specific surface areas (500-1000 m²/g), enabling effective adsorption of gas molecules and harmful materials.

The patent creates a hierarchical porous structure with macro-pores (2-50 nm) formed by the sparse pillar arrangement, which is larger than the micro-pores of activated carbon. This porous structure provides both high specific surface area and sufficient pore volume, enabling increased adsorption capacity for various gas molecules and harmful materials while maintaining easy molecular diffusion.

The patent creates an organic-inorganic hybrid composite material combining gibbsite or aluminum oxide layers with intercalated dicarboxylic acid pillars. This composite structure maintains the excellent surface adsorption properties of aluminum oxide while introducing large pore volumes and high specific surface areas through the organic pillar structure, achieving both reliability and high adsorption capacity.

The patent applies partial intercalation by inserting organic dicarboxylic acid pillars at controlled intervals rather than filling all interlayer spaces. This partial action creates a sparse pillar structure that provides sufficient structural stability while leaving large continuous interlayer spaces (2-50 nm) available for adsorption of gas molecules and harmful materials, achieving optimal balance between stability and adsorption capacity.