Quick growth kinetics led to oxygen defective deposits composed of a mixture of hydrated cerium oxide/hydroxide incorporating carbonates and trapped nitrates due to incomplete reactions.
A second example is Thiomargarita, an even larger, free-living γ-proteobacterium that traps nitrates from up-welling currents in giant internal vacuoles [ 82].
The decreased trapping performance at higher temperatures is due to decreased nitrate stability, while the increased trapping performance at lower temperature is due to improved oxidation kinetics.
Occasionally, the odd nitrate train trundles past, trailing white mist.
The evolved hydrogen sulfide was trapped in 15 mL of silver nitrate (26 mM nitric acid (167 mM) solution.
The filter was first acidified with 20 ml 6 M HCl under Ar, and the released sulfide was quantitatively precipitated in a trap containing 100 ml of aqueous silver nitrate (0.5% w/v).
We report the various characteristics of Pt K/MgAl2O4 lean NOx trap (LNT) catalysts including the effect of K loading on nitrate formation/decomposition, NOx storage activity, and durability.
Thus, a synergetic effect is created in the presence of the cement matrix, which helps to effectively trap the reactant gases (NO and NO2) together with the nitrate salt formed.
The lean NOx trap (LNT) is an adsorptive catalytic reactor in which NOx is stored as nitrates in excess O2 and then reduced during a brief regeneration.
Despite the presence of a water trap, a certain amount of acid fumes (likely HI) will make it to the silver nitrate (AgNO3) trap, increasing the apparent Ag2S yield.
