Unknown

Dataset Information

0

Selective hydrogenolysis of catechyl lignin into propenylcatechol over an atomically dispersed ruthenium catalyst.


ABSTRACT: C-lignin is a homo-biopolymer, being made up of caffeyl alcohol exclusively. There is significant interest in developing efficient and selective catalyst for depolymerization of C-lignin, as it represents an ideal feedstock for producing catechol derivatives. Here we report an atomically dispersed Ru catalyst, which can serve as an efficient catalyst for the hydrogenolysis of C-lignin via the cleavage of C-O bonds in benzodioxane linkages, giving catechols in high yields with TONs up to 345. A unique selectivity to propenylcatechol (77%) is obtained, which is otherwise hard to achieve, because this catalyst is capable of hydrogenolysis rather than hydrogenation. This catalyst also demonstrates good reusability in C-lignin depolymerization. Detailed investigations by model compounds concluded that the pathways involving dehydration and/or dehydrogenation reactions are incompatible routes; we deduced that caffeyl alcohol generated via concurrent C-O bonds cleavage of benzodioxane unit may act as an intermediate in the C-lignin hydrogenolysis. Current demonstration validates that atomically dispersed metals can not only catalyze small molecules reactions, but also drive the transformation of abundant and renewable biopolymer.

SUBMITTER: Wang S 

PROVIDER: S-EPMC7814062 | BioStudies | 2021-01-01

REPOSITORIES: biostudies

Similar Datasets

2018-01-01 | S-EPMC6404071 | BioStudies
1000-01-01 | S-EPMC6162077 | BioStudies
2019-01-01 | S-EPMC6796940 | BioStudies
1000-01-01 | S-EPMC3277123 | BioStudies
2019-01-01 | S-EPMC6874494 | BioStudies
1000-01-01 | S-EPMC5080437 | BioStudies
2019-01-01 | S-EPMC6648438 | BioStudies
2019-01-01 | S-EPMC6925196 | BioStudies
2020-01-01 | S-EPMC7564559 | BioStudies
2019-01-01 | S-EPMC6482439 | BioStudies