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1. Sol-gel process: a simple method for producing porous materials
1.1 Discoveries and barriers to technology transfer
In 1846, when Jacques Joseph Elbemen reported the discovery of silicon products derived from the combination of silicic acid with ethers or silicon chloride with alcohols , in these words:
"All you have to do is pour silicon chloride into excess alcohol, and leave the liquid in damp air: it solidifies into a transparent mass that exhales a strongly acidic odor for several months. The product eventually becomes opaline, but regains...
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Sol-gel process: a simple method for producing porous materials
Indoor air pollutants
Bibliography
Standards and norms
- Indoor air – Part 3: Determination of formaldehyde and other carbonyl compounds – Active sampling method (classification index: X43-404-3). - NF ISO 16000-3 - 2002
- Indoor air – Part 4: formaldehyde determination – Diffusive sampling method (classification index: X43-404-4). - NF ISO 16000-4 - 2006
Statistical and economic data
The instruments marketed for aldehyde or formaldehyde selective quantification are shown in Table 1 .
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