| 摘要 |
Sol-gel material comprises primary polyalkoxysilane units comprising tetramethoxysilane and one or more secondary polyalkoxysilane units different from the primary polyalkoxysilane, where the molar ratio of the tetramethoxysilane to the secondary polyalkoxysilane is 1/0.01 to 1/1. Independent claims are included for: (1) a process for the preparation of the sol-gel material comprising mixing the tetramethoxysilane with its organic solvent miscible with water, adding the secondary polyalkoxysilane, adding desired additional water, catalyst or structuring agent or both, and continuous agitating for obtaining sol, then expected desired soil-gel, and placing in the form of sol in molds to obtain expected blocks of sol gel; (2) a process for trapping of monocyclic aromatic hydrocarbon using the material as a detector, comprising contacting flow containing the monocyclic aromatic hydrocarbon with the material, optionally incorporating the probe molecule or circulating such a flow on it; and (3) a system for trapping or detection of monocyclic aromatic hydrocarbons or pollutant as a detector using the sol-gel material, optionally incorporating the probe molecule. |
