Chemical Reactivity of Formaldehyde in FeAlP0{sub 4} Sieve
Formaldehyde gas loaded into framework Fe aluminophosphate sieve (FeAlP O4-5) at 250 K was found to react with adsorbed H2O, CH3OH, H2O2, or lattice OH groups to yield the corresponding addition product, namely CH2(OH)2, CH3OCH2OH, HO 2CH2OH, or POCH2OH, respectively. Reactions were monitored in situ by static FT-IR spectroscopy, and assignments are based on experiments with CD2=0 and CD3OD. Most efficient was the reaction with H2O2 as indicated by the fact that HO2CH2OH was formed at the exclusion of CH2(OH)2 and POCH2OH when adsorbing formaldehyde onto a sieve loaded with H2O2 and H2O. Methoxymethanol, methanediol, and POCH2OH were stable at 250 K, but dissociated above 0 degrees C under release of formaldehyde. Hydromethyl hydroperoxide disproportionates to formic acid and water. Under 355 nm irradiation in FeAlPO4 sieve, HO2CH2OH was found to undergo efficient photofragmentation.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director, Office of Science. Office of Basic Energy Sciences. Division of Chemical Sciences (US)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 821433
- Report Number(s):
- LBNL-47673; JPCHAX; R&D Project: 449540; TRN: US200411%%150
- Journal Information:
- Journal of Physical Chemistry, Vol. 106, Issue 14; Other Information: Journal Publication Date: 04/11/2002; PBD: 12 Mar 2001; ISSN 0022-3654
- Country of Publication:
- United States
- Language:
- English
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