Analytical study on the pyrolytic behaviour of cellulose in the presence of MCM-41 mesoporous materials

Torri, Cristian; Lesci, Isidoro Giorgio; Fabbri, Daniele

doi:10.1016/j.jaap.2008.11.024

Cited by 87 publications

(38 citation statements)

References 23 publications

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“…In addition, increased catalyst dose resulted in enhanced production of furans, which is in good agreement with the result of the present study. Torri et al 26 argued that levoglucosan produced from the pyrolysis of cellulose was converted to other valuable species by dehydration and deoxygenation in the presence of metal-containing MCM-41 catalyst. When the number of acid sites is too big or the sort of acid sites are strong Brønsted acid sites, furans can be converted to aromatics.…”

Section: Conversion Of Cellulose Over Sapo-11mentioning

confidence: 99%

Catalytic Pyrolysis of Cellulose over SAPO-11 Using Py-GC/MS

Lee¹,

Jun²,

Kang³

et al. 2013

Bulletin of the Korean Chemical Society

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The catalytic pyrolysis of cellulose was carried out over SAPO-11 for the first time. Pyrolyzer-gas chromatography/mass spectroscopy was used for the in-situ analysis of the pyrolysis products. The acid sites of SAPO-11 converted most levoglucosan produced from the non-catalytic pyrolysis of cellulose to furans. In particular, the selectivity toward light furans, such as furfural, furan and 2-methyl furan, was high. When the catalyst/ cellulose ratio was increased from 1/1 to 3/1 and 5/1, the increase in the quantity of acid sites led to the promotion of deoxygenation and the resultant increase of the contents of light furan compounds. Because furans can be used as basic feedstock materials, the augmentation of the economical value of bio-oil through the catalytic upgrading over SAPO-11 is considerable.

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Section: Conversion Of Cellulose Over Sapo-11mentioning

confidence: 99%

Catalytic Pyrolysis of Cellulose over SAPO-11 Using Py-GC/MS

Lee¹,

Jun²,

Kang³

et al. 2013

Bulletin of the Korean Chemical Society

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“…14) in all the pyrograms is interesting, which is reported in the literature to be the principal pyrolysis product of several saccharides [45]. The abundance of this compound might be derived from the decalcification process probably leading to an acid-catalyzed pyrolysis [29]; however, its presence in the GC-MS traces of all the samples shows the occurrence inside the intracrystalline OM of corals of nonchitinous polysaccharides. Since the obtained data have not enabled us to discriminate between chitin and its monomer, and between chitinous and nonchitinous polysaccharides, we decided to discuss the results as polysaccharides.…”

Section: Polysaccharidesmentioning

confidence: 76%

Analytical pyrolysis-based study on intra-skeletal organic matrices from Mediterranean corals

et al. 2014

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Off-line analytical pyrolysis combined with gas chromatography–mass spectroscopy (GC–MS), directly or after trimethylsilylation, along with infrared spectroscopy and amino acid analysis was applied for the first time to the characterization of the intra-skeletal organic matrix (OM) extracted from four Mediterranean hard corals. They were diverse in growth form and trophic strategy namely Balanophyllia europaea and Leptopsammia pruvoti—solitary corals, only the first having zooxanthelle—and Cladocora caespitosa and Astroides calycularis—colonial corals, only the first with zooxanthelle. Pyrolysis products evolved from OM could be assigned to lipid (e.g. fatty acids, fatty alcohols, monoacylglicerols), protein (e.g. 2,5-diketopiperazines, DKPs) and polysaccharide (e.g. anhydrosugars) precursors. Their quantitative distribution showed for all the species a low protein content with respect to lipids and polysaccharides. A chemometric approach using principal component analysis (PCA) and clustering analysis was applied on OM mean amino acidic compositions. The small compositional diversity across coral species was tentatively related with coral growth form. The presence of N-acetyl glucosamine markers suggested a functional link with other calcified tissues containing chitin. The protein fraction was further investigated using novel DKP markers tentatively identified from analytical pyrolysis of model polar linear dipeptides. Again, no correlation was observed in relation to coral ecology. These analytical results revealed that the bulk structure and composition of OMs among studied corals are similar, as it is the textural organization of the skeleton mineralized units. Therefore, they suggest that coral’s biomineralization is governed by similar macromolecules, and probably mechanisms, independently from their ecology.

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“…Various acid catalysts exhibited the capability to promote the LGO formation, such as the MgCl 2 and FeCl 3 (Klampfl et al, 2006), (NH 4 ) 2 SO 4 and (NH 4 ) 2 HPO 4 (Pappa et al, 2006;Di Blasi et al, 2007), CrO 3 and CrO 3 +CuSO 4 (Fu et al, 2008a), ZnCl 2 (Di Blasi et al, 2008), M/MCM-41(M=Sn, Zr, Ti, Mg, etc.) (Torri et al, 2009a). However, almost all of these catalysts did not show high selectivity on the LGO, because they catalyzed the formation of several dehydrated products (LGO, LAC, DGP, FF, etc.…”

Section: Levoglucosenonementioning

confidence: 97%