Abstract：
:Direct hydrogenolysis of Kraft lignin was catalyzed over a series of supported Ni or Re catalysts in ethanol solvent. The best results showed that the oil yield of 96.70 wt% was obtained with less char formation at 330 °C for 3 h over 5Ni-5Re/Nb2O5 catalyst. Product analysis demonstrated that the monomer yield of 35.41 wt% was given under mild condition, and low-molecular-weight aromatic alcohols were the main component in the liquid products. Ethanol was found to be more effective in H2 production and facilitated the transformation of phenolic monomers to aromatic chemicals. The results confirmed that the optimal 5Ni-5Re/Nb2O5 catalyst had superior oxophilicity and appropriate acid sites, which improved the ability to directly remove the methoxyl and hydroxyl groups of lignin-derived phenolic compounds without aromatic ring hydrogenation. In addition, the temperature, time and solvent effects on the lignin depolymerization were also investigated.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Kong L,Zhang L,Gu J,Gou L,Xie L,Wang Y,Dai Ldoi
10.1016/j.biortech.2019.122582subject
Has Abstractpub_date
2020-03-01 00:00:00pages
122582eissn
0960-8524issn
1873-2976pii
S0960-8524(19)31812-7journal_volume
299pub_type
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