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CATALYTIC HYDROTREATING OF KRAFT LIGNIN TO PRODUCE BIOFUEL COMPONENTS
Abstract
This paper presents the results of the study of Kraft lignin hydrogenolysis process, using 5%Pd/C. The catalyst was investigated using the following physico-chemical methods: X-ray photoelectron spectroscopy, infrared spectroscopy of diffuse reflection of the adsorption of CO (DRIEFT), transmission electron microscopy, thermal gravimetric analysis, differential scanning calorimetry, the low-temperature nitrogen adsorption. Among the products obtained during hydrogenolysis of lignin the most promising for fuels are aromatic hydrocarbons (benzene, toluene, cyclohexane), and also phenolic compounds which can be used as additives to conventional fuels and fuels derived from biomass. Furthermore, a number of cyclic and aromatic hydrocarbons, can also be used in various fields of fine chemicals as solvents and reagents. Maximum feedstock conversion was achieved at 300 В°C (98%). Maximum selectivity to phenol was achieved at 250 В°C (68% selectivity at 90% conversion). The optimal solvent is 2-propanol.
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