Sreening of Nanopowder for Catalytic Pyrolysis of Buckwheat Straw by using TGA-FTIR Method
13th International Conference of Young Scientists on Energy Issues (CYSENI 2016) 2016
Kristīne Lazdoviča, Valdis Kampars, Liene Vasariņa, Jānis Grabis

Pyrolysis plays a vital role in the biomass conversion as one of the most promising thermal conversion routes. Solid, liquid and gaseous products are obtained from biomass pyrolysis. The liquid is considered as perspective fuel; however, the direct use of bio-oil as fuel may present many difficulties due to its high viscosity, poor heating value and relative instability. This creates a significant economic barrier for production of transportation fuel by pyrolysis process. Catalytic pyrolysis has been widely used as a convenient method for the direct conversion of biomass into higher quality liquid bio-fuels. In this study, pyrolysis of buckwheat straw without and with nanopowders (Ni/MgO, Ni/Al2O3, Fe2NiO4, FeO∙Fe2O3, NiO∙Al2O3, NiO/MnO/Al2O3) was investigated using a thermogravimetric analyzer STA 6000 combined with a FTIR Spectrum 100 (TGA-FTIR). The non-catalytic and catalytic pyrolysis experiments were performed by ramp the temperature from 30 to 700 °C at the heating rate of 100 °C/min and held at 700 °C for 10 minute in a pure nitrogen flow of 20 ml/min. The mass of sample without catalyst was 32 mg and the mass ratio of mixed catalyst and sample was 1:1. The transfer line and gas cell were heated to an internal temperature of 230 °C to avoid condensation or adsorption of the semi-volatile products. FTIR spectrum was recorded every 9s in the spectral range between 4000 and 650cm-1. All catalysts increased the yield of volatile products from 66.5% to 79.5%. Fe2NiO4 provided higher relative yield of aromatics and carbon dioxide compared to the Ni/MgO, Ni/Al2O3, NiO/MnO/Al2O3, whereas by using Ni/MgO, Ni/Al2O3, NiO/MnO/Al2O3 improved the relative yield of olefins and carbon monoxide. Fe2NiO4 catalyst affected not only the relative yield and composition of volatile products but also their evolution profiles.


Atslēgas vārdi
Buckwheat straw, catalytic pyrolysis, TGA-FTIR method, nanopowder
Hipersaite
http://cyseni.com/archives/proceedings/Proceedings_of_CYSENI_2016.pdf#page=297

Lazdoviča, K., Kampars, V., Vasariņa, L., Grabis, J. Sreening of Nanopowder for Catalytic Pyrolysis of Buckwheat Straw by using TGA-FTIR Method. No: 13th International Conference of Young Scientists on Energy Issues (CYSENI 2016), Lietuva, Kaunas, 26.-27. maijs, 2016. Kaunas: Lithuanian Energy Institute, 2016, 288.-296.lpp. ISSN 1822-7554.

Publikācijas valoda
English (en)
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