A novel test method for cracking catalysts

Fast pyrolysis of cassava rhizome in the presence of catalysts

“…Identification of chromatographic peaks from pyrolysis GC/ MS experiments was carried out by comparing the mass ions (m/z) of each peak with NIST mass spectral database and literature data of pyrolysis products from lignocellulosic materials [19][20][21][22][23][24][25][26][27][28][29][30]. Four experimental runs were performed per sample and the averaged values were used for analysis.…”

Effect of zeolites and nanopowder metal oxides on the distribution of chiral anhydrosugars evolved from pyrolysis of cellulose: An analytical study

“…The summed molar yields of the investigated anhydrosugars decrease from 20% for neat cellulose to 9% for cellulose mixed with NH 4 -Yand 3-4% for H-Yand NH 4 -ZSM-5. Such a behaviour can be related to the deoxygenating activity of zeolites in bio-oil upgrading promoted by acid sites [15][16][17][18]20]. The choice adopted in this work for testing the NH 4 form of zeolites was motivated by an attempt to prevent severe deoxygenation as described for the Hform [15][16][17][18].…”

“…There are studies in the literature attesting the validity of analytical pyrolysis for assessing the effect of different catalysts on the composition of pyrolytic vapours produced by organic materials [20,21].…”

Investigation on catalytic pyrolysis of pine sawdust: Catalyst screening by Py-GC-MIP-AED

“…This is one reason why it is difficult to obtain good mass balance by using only GC-MS systems. On the contrary, GC-MIP-AED system allows quantification (in terms of yield of analyzed elements) of a large number of compounds without time consuming calibration and for this reason it was used in the study of biomass catalytic pyrolysis [44][45][46].…”

“…With the adopted experimental procedure it was not possible to distinguish between heavy un-detectable compounds and loss for coking onto catalyst (placed downstream in the GC inlet). Nevertheless, scale up with ZnO catalysis showed that it is possible to improve the stability of bio-oil also by mild catalysis over cheap materials [44][45][46][47].…”