Development of cabin air filter with aldehyde capture function 2000-05-0343
Aldehydes are the cause of sick house syndrome or chemical
sensitivity and have harmful influences for human beings. In the
cabin of vehicle, aldehydes which are included in the
volatilization gas from the interior materials, DE emission gas in
intake air, cigarette smoke and so on spoil the comfortableness.
Active carbon, which has been used as an adsorbent, shows an
excellent removal efficiency for most of the gas components by
physical adsorption. But for aldehydes, it has difficulty because
aldehydes are hard to be adsorbed physically.
We have developed new aldehydes adsorbent undergoing addition
reaction with gaseous aldehydes on its surface. Aldehydes capture
material (ACM) make use of the chemical reaction using a resorcin
as a reagent and an H-type zeolite as a water-containing support,
and active hydrogen is used as a catalyst to promote the reaction.
In addition, we have applied ACM to cabin air filter (CAF) of
vehicle. Combining ACM with active carbon, we have developed CAF
with aldehydes capture function and realized the best cabin air