Alcoxycle : a novel route for glycerol reform into H2 and COx inseparate stages.

Resumo
In this paper, it is proposed a new route, named “Alkoxycle”, for the conversion of glycerol from biodieselproduction into H2and CO/CO2in different and separate stages. In this process, glycerol first reacts withNaOH to form an alkoxide that, in a second step, undergoes controlled thermal decomposition. Analysesof glycerol:NaOH precursor mixtures (molar ratios of 1:1, 1:2, 1:3 and 1:5) by TG, XRD, SEM, TEM, Raman,total carbon and GC–MS showed that the decomposition of the alkoxide at 400◦C leads to the formationof three fractions: liquid, gas and solid. The liquid products were formed only in very small amountswhereas an important gas fraction (12–16 wt%) was produced consisting mainly of H2(95% selectivity).In the second stage, the solid products (70–86 wt%) consisting of Na2O, carbon and mostly Na2CO3canbe decompose by heating at 700◦C to procuce CO2and especially CO. At the end of the Alcoxycle process,the NaOH used in the reaction and also the NaOH present in the biodiesel glycerol can be recovered andreused.
Descrição
Palavras-chave
Glycerol, Sodium hydroxide, Alkoxide, Hydrogen, Syngas
Citação
PAULA, F. G. F. de et al. Alcoxycle: a novel route for glycerol reform into H2 and COx inseparate stages. Catalysis Today, v. 289, p. 127-132, jul. 2016. Disponível em: <http://www.sciencedirect.com/science/article/pii/S092058611630445X>. Acesso em: 26 set. 2016.