http://www.cnr.it/ontology/cnr/individuo/prodotto/ID176926
Thermal and catalytic decomposition of wood impregnated with phosphorous- and sulfur-containing ammonium salts (Articolo in rivista)
- Type
- Label
- Thermal and catalytic decomposition of wood impregnated with phosphorous- and sulfur-containing ammonium salts (Articolo in rivista) (literal)
- Anno
- 2008-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1016/j.polymdegradstab.2007.12.003 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- C. Di Blasi; C. Branca; A. Galgano (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
- http://www.elsevier.com/locate/polydegstab (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Dipartimento di Ingegneria Chimica, Universita? degli Studi di Napoli \"Federico II\", P.le V. Tecchio, 80125 Napoli, Italy (literal)
- Titolo
- Thermal and catalytic decomposition of wood impregnated with phosphorous- and sulfur-containing ammonium salts (literal)
- Abstract
- The decomposition of fir wood, impregnated with diammonium sulfate and diammonium phosphate, has been investigated with a laboratory
scale reactor together with gas-chromatographic analysis of gas and condensable organics. The dependence of products and other process variables
on the salt concentration in the wood (from 0 to about 20% on a dry wood basis) and the heating temperature (650e900 K) is qualitatively
similar for the two cases. Given heating temperatures of about 650e750 K and using as a reference water-extracted wood, diammonium sulfate
and diammonium phosphate concentrations of about 1% are apt to cause a small increase (factors of 1.2e2) in the yields of levoglucosan,
5-methyl-2-furaldehyde and 2-acetylfuran, whereas values in the range 2e5% highly augment the yields of levoglucosenone and 2-furaldehyde
(factors of 14e16 and 3e2, respectively). Salt concentrations above 10% confer excellent fire retardance properties of wood with total yields of
water and char up to about 70 and 85% and ratio values of non-combustible to combustible volatile products up to 3.5 and 6.5, respectively. The
displacement of the reaction process at lower temperatures, the higher exothermicity associated with the enhanced char formation, the reduced
convective cooling and the endothermicity of salt decomposition also highly affect the conversion times and the overall rates of volatile species
release. (literal)
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