One-Step Extreme Delignification to Simultaneously Produce High-Purity Cellulose and Phenolated Lignin.

ABSTRACT: Current forest product strategies, involving cooking and multistage bleaching processes, primarily focus on producing high-quality (e.g., high brightness) cellulose fibers, generating low-quality lignin that is typically burnt for energy production. Here, a formic acid-phenol-water system (FP) for achieving extreme delignification is developed, simultaneously producing high-purity/brightness cellulose pulp fiber and phenolated lignin directly from lignocellulosic biomass. The strategy allows to establish a competitive reaction mechanism by introducing active phenol to replace lignin fragments and to react preferentially with lignin-reactive intermediates, enhancing the lignin removal rate while avoiding its condensation. The directly produced cellulose pulp with superior purity enables it

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC12665879 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature