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- W2994902008 abstract "Blends of lignin-rich oil (LRO) and vegetable oil (1:8, 1:4, 1:2, and 1:1) were prepared and hydrotreated over CoMo/Al2O3 (catalyst liquid ratio of 1:50) at 623 K and 500 rpm, with 9.3 MPa of cold initial H2 pressure for 4 h. The yield of liquid, gas, and solid products was reported. The yield of coke obtained was in all of the cases very high (between 25 and 50 wt % of the LRO processed, depending upon the LRO/vegetable oil ratio used). Most of the product from the lignin-rich fraction remained in the heavy fractions. To mitigate coke formation, blends containing 0.5 g of butanol/g of LRO studied were co-hydrotreated with vegetable oils maintaining the LRO/vegetable oil ratios. The presence of 1-butanol mitigated coke formation, but it did not translate in the production of distillable fractions; the LRO contributed to the formation of a heavy oil. The LRO needs to be stabilized and cracked before co-deoxygenation. Cracking/stabilization studies in the presence of butanol and methanol were conducted over Ni/SiO2–Al2O3 at 473 K with 9.3 MPa of cold H2 pressure for 24 h. The best results were obtained with the oils stabilized in the presence of butanol. The yield of coke formed decreased from 34.7 wt % on LRO basis to 6.65 wt %. The behavior of the stabilized/cracked LRO/vegetable oil blends (1:4) in terms of the product yield was comparable to the yields obtained when vegetable oil was deoxygenated alone. The solid residue (coke) increased from 0.04 wt % when vegetable oil was processed alone to 1.13 wt % when a 1:4 blend of stabilized/cracked lignin/vegetable oil was co-processed. Lower coke yields may be obtained in continuous co-hydrotreatment reactors." @default.
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- W2994902008 date "2019-12-09" @default.
- W2994902008 modified "2023-09-26" @default.
- W2994902008 title "Co-hydrotreatment of the Bio-oil Lignin-Rich Fraction and Vegetable Oil" @default.
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- W2994902008 doi "https://doi.org/10.1021/acs.energyfuels.9b03344" @default.
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