NDLI: Sodium, zinc and magnesium chlorides as additives for soybean hulls pyrolysis : Influence on the temperature range of reactions and product selectivity

Content Provider	Springer Nature Link
Author	Santana, J. A. Sousa, N. G. Cardoso, C. R. Carvalho, W. S. Ataíde, C. H.
Copyright Year	2016
Abstract	Thermogravimetric analysis and analytical pyrolysis were used to investigate the decomposition of pure soybean hulls and hulls impregnated with metal chlorides (NaCl, ZnCl$_{2}$ and MgCl$_{2}$). Each additive was studied at contents of 10, 20 and 30 % in mass concentration. Thermogravimetric analyses were performed at different heating rates (5, 10, 15, 20 and 25 °C min$^{−1}$) under inert nitrogen atmosphere. Analytical pyrolysis experiments were carried out at 550 and 650 °C, and the pyrolysis products were analyzed by gas chromatography and mass spectrometry. The mass loss and derivative mass loss curves of soybean hulls impregnated with salts showed a decrease in the decomposition temperature and reduction in maximum degradation rate for the samples containing ZnCl$_{2}$ and MgCl$_{2}$. The samples impregnated with NaCl showed an increase in the decomposition temperature and reductions in the maximum degradation rate. Considering analytical pyrolysis results, samples with MgCl$_{2}$ and ZnCl$_{2}$ presented increases in aldehydes and reductions in acid and ester contents. The addition of NaCl did not present an important effect on pyrolysis products from soybean hulls. The study concerning the thermal decomposition of soybean hulls to which metal chlorides were added is not registered in previous works. Results indicated that the addition of ZnCl$_{2}$ and MgCl$_{2}$ reduced the thermal degradation temperatures and that the studied mixtures can be used as sustainable raw materials for the production platform of fuels and value-added chemicals.
Starting Page	471
Ending Page	481
Page Count	11
File Format	PDF
ISSN	13886150
Journal	Journal of thermal analysis
Volume Number	125
Issue Number	1
e-ISSN	15882926
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-03-16
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Thermogravimetric analysis Analytical pyrolysis Biomass Catalytic effect Metal chlorides Useful chemicals Physical Chemistry Analytical Chemistry Polymer Sciences Inorganic Chemistry Measurement Science and Instrumentation
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Condensed Matter Physics

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