Abstract

CASTRO, Alejandro A et al. POTASSIUM CARBONATE EFFECT ON BIOCRUDE FUNCTIONAL GROUPS EVOLVING FROM LIGNOCELLULOSIC BIOMASS UNDERGOING HYDROTHERMAL CONVERSION CLOSE TO THE CRITICAL POINT OF WATER. Rev.Colomb.Quim. [online]. 2008, vol.37, n.2, pp.243-251. ISSN 0120-2804.

A type of poor-lignin biomass (Pennisetum sp.) was hydrothermally converted in the presence of potassium carbonate as catalyst. The reactions were carried out close to the critical point of the water. The non-aqueous (biocrude) reaction products were separated by decantation and were analyzed by infrared spectrometry. The biocrude products so obtained contained compounds having aromatic, olephinic, hydroxylated and ether functionalities; sub-critical biocrude had carbonyl functions. The gaseous and biocrude fractions increased in the presence of potassium carbonate.

Keywords : biomass; bio-oil; potassium carbonate; subcritical water; fuels.

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