Estudo do efeito da presença de alumina dopada com TiO2 e ZrO2 no craqueamento do óleo de soja

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

The catalytic cracking of triglycerides presents itself as a possible alternative to the production of biofuels with low emission of pollutants. In this work a study of the use of solids, constituted by mixed oxides of Ti, Zr and Al, as catalysts for the cracking reaction of soybean oil is presented. The study involves, after a large bibliographic review about the obtention of hydrocarbons from triglycerides by pyrolysis of vegetable oils and animal fats, the synthesis by co-precipitation and the characterization of several solids by thermo gravimetric analysis, X-rays diffraction, superficial area determined by BET method, chemical composition (ICP-AES), Raman spectroscopy and determination of surface acidity by titration and FTIR. The products obtained in the cracking of soybean oil were analyzed by distillation, acid number, infra-red spectroscopy, density, viscosity, carbon residue, cetane number determination and characterization of the final mixture by CG-MS and CG-FID. The analysis of the products obtained in the presence and in the absence of the oxides synthesized permitted to conclude that all the solids tested presented catalytic activity in the deoxygenation of final products only at the second step of the cracking process.

ASSUNTO(S)

pyrolysis catalysis cracking craqueamento catalítico quimica óleo de soja gamma-alumina pirólise catálise gama-alumina energia soybean oil energy. química

ACESSO AO ARTIGO

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