Abstract
Efficient utilization of biomass is one of the important ways to alleviate energy shortage. In this study, microcrystalline cellulose was used as the source of bio-oil, and Fe/HZSM-5, Ni/HZSM-5 and Mo/HZSM-5 catalysts were used to adjust the composition of bio-oil and upgrade heavy oil under hydrothermal conditions, so as to understand the influence of bio-oil generated by different catalysts on the upgrading of heavy oil. The characteristics of heavy oil before and after upgrading were analyzed by using elemental analysis, infrared spectrum and molecular weight. The composition of bio-oil was analyzed by GC/MS before, during and after entering the hydrothermal system of heavy oil. The results show that Fe-oil and Mo-oil contain more methoxy compounds and tetrahydronaphthalene, which are more conducive to the upgrading of heavy oil, and have strong desulfurization and hydrogenation effect, but have no obvious effect on nitrogen compounds.
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