Decoupled temperature and pressure hydrothermal synthesis of carbon sub-micron spheres from cellulose.

ABSTRACT: The temperature and pressure of the hydrothermal process occurring in a batch reactor are typically coupled. Herein, we develop a decoupled temperature and pressure hydrothermal system that can heat the cellulose at a constant pressure, thus lowering the degradation temperature of cellulose significantly and enabling the fast production of carbon sub-micron spheres. Carbon sub-micron spheres can be produced without any isothermal time, much faster compared to the conventional hydrothermal process. High-pressure water can help to cleave the hydrogen bonds in cellulose and facilitate dehydration reactions, thus promoting cellulose carbonization at low temperatures. A life cycle assessment based on a conceptual biorefinery design reveals that this technology leads to a substantial reduction i

SUBMITTER: Yu S 

PROVIDER: S-EPMC9232491 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature