| abstract |
A siloxane remover useful for efficiently removing siloxanes and a filter for a gas sensor are provided. A siloxane remover has a crosslinked structure, and is a porous copolymer of an aromatic vinyl monomer and a polyfunctional aromatic vinyl monomer having a plurality of vinyl groups. And a water content of 5% by weight or less. The porous copolymer may be an alkylstyrene-divinylbenzene copolymer, having a specific surface area of 1000 to 1500 m 2 / g, a pore volume of 1.5 to 2.5 ml / g, and a pore frequency radius of 6 May have ˜12 nm. The siloxane remover efficiently adsorbs and removes cyclic siloxanes [cyclic trimer of siloxane (D3), cyclic tetramer (D4), cyclic pentamer (D5), etc.]. [Selection] Figure 1 |