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Correlation between Liquid Product Distribution and H 2 Selectivity in Lignin Depolymerization
Author(s) -
Yang Jing,
Liu Shaotong,
Liu Chunze,
Wang Yuanyuan,
Dai Liyi
Publication year - 2018
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201700017
Subject(s) - depolymerization , selectivity , lignin , catalysis , chemistry , formic acid , supercritical fluid , product distribution , kraft process , organic chemistry , kraft paper , chemical engineering , engineering
Despite the vast potential for the depolymerization of kraft lignin in supercritical systems, selective access to desired renewable products remains a very challenging target. Catalytic depolymerization of kraft lignin was carried out in an isopropanol‐water mixture system over a Rh/La 2 O 3 /CeO 2 ‐ZrO 2 catalyst. The H 2 selectivity was adjusted by changing the proportions of isopropanol and water. The introduction of formic acid was more helpful to extend the selectivity range. A correlation was established between liquid product distribution and H 2 selectivity. It was used for predicting the composition of the liquid oil by H 2 selectivity or, optionally, for converting kraft lignin to the desired liquid products. This correlation was applicable to different solvents, temperatures, and catalysts.