Kinetics of Periodate-Mediated Oxidation of Cellulose
Journal article, 2024

The oxidation of cellulose to dialdehyde cellulose (DAC) is a process that has received increased interest during recent years. Herein, kinetic modeling of the reaction with sodium periodate as an oxidizing agent was performed to quantify rate-limiting steps and overall kinetics of the cellulose oxidation reaction. Considering a pseudo-first-order reaction, a general rate expression was derived to elucidate the impact of pH, periodate concentration, and temperature on the oxidation of cellulose and concurrent formation of cellulose degradation products. Experimental concentration profiles were utilized to determine the rate constants for the formation of DAC (k1), degradation constant of cellulose (k2), and degradation of DAC (k3), confirming that the oxidation follows a pseudo-first-order reaction. Notably, the increase in temperature has a more pronounced effect on k1 compared to the influence of IO4− concentration. In contrast, k2 and k3 display minimal changes in response to IO4− concentration but increase significantly with increasing temperature. The kinetic model developed may help with understanding the rate-limiting steps and overall kinetics of the cellulose oxidation reaction, providing valuable information for optimizing the process toward a faster reaction with higher yield of the target product.

periodate

cellulose

oxidation

cellulose derivatives

dialdehyde

kinetic model

Author

Nazmun Sultana

Royal Institute of Technology (KTH)

Chalmers, Chemistry and Chemical Engineering, Chemistry and Biochemistry

Ulrica Edlund

Royal Institute of Technology (KTH)

Chandan Guria

Indian Institute of Technology

Gunnar Westman

Chalmers, Chemistry and Chemical Engineering, Chemistry and Biochemistry

Polymers

2073-4360 (eISSN)

Vol. 16 3 381

Design for Circularity: Lignocellulose based Thermoplastics - Fib:Re

VINNOVA (2019-00047), 2020-01-01 -- 2024-12-31.

Subject Categories

Paper, Pulp and Fiber Technology

DOI

10.3390/polym16030381

More information

Latest update

5/29/2024