Fe/HZSM-5 catalytic pyrolysis cellulose as hydrogen donor for the upgrading of heavy crude oil by one-pot process

The combine utilization of traditional fossil sources and biomass energy is a new idea with great potential. In this study, established the heavy crude oil upgrading system combine with cellulose, and the hydrogen supply effect of catalytic pyrolysis of cellulose was discussed. Fe/HZSM-5 increased the pyrolysis of cellulose, resulting in a bio-oil yield of up to 84%, and the potential components that employed as hydrogen donors (such as alcohols, aromatics, aliphatic-hydrocarbons) are increased to varying degrees, which ensures more efficient in heavy crude oil upgrading. The heavy crude oil viscosity decreased from 10,460 mpa.s to 2083 mpa.s after cellulose and heavy crude oil upgrading catalyzed by 5%Fe/HZSM-5 at 350 degrees C. A series of qualitative evaluations from the perspective of hydrogen supply, including FT-IR, Elemental analysis, SARA and 1HNMR, found significant improvements in the quality of the heavy crude oil.

Automated summary

The study explored the hydrogen supply effect of catalytic pyrolysis of cellulose in combination with a heavy crude oil upgrading system. Fe/HZSM-5 was found to increase cellulose pyrolysis, resulting in a higher bio-oil yield and improved heavy crude oil upgrading efficiency and quality. Various potential components were identified as hydrogen donors, leading to significant improvements in the heavy crude oil quality.