Pyrolysis Decomposition Kinetics of Microcrystalline Cellulose and Curaua Fiber: Insight of Reaction Models by Using Vyazovkin Method

ABSTRACT

This paper provides a full understanding of the pyrolysis mechanism of plant biomass (curaua) and cellulose – two materials that involve complex degradation stages. The chemical/physical reactions occurring in the corresponding mass loss stages are described in detail for each material. Multi-step degradation stages are identified by using Vyazovkin and Flynn–Wall–Ozawa methods and the individual contribution are discussed in terms of the chemical and physical steps involved in the process. The determination of multi-stages processes are rapidly determined applying an easy-to-use method as a first approach. We expect that this study helps to develop an understanding of the thermal degradation for future complex materials as well as to establish the initial guesses and to give an insight into the overall biomass decomposition. Final results can help to design of pyrolysis reactor and to develop new kinetic approaches.

摘要

本文全面了解了植物生物质(Curua)和纤维素的热解机理, 这两种材料涉及复杂的降解阶段. 详细描述了每种材料在相应质量损失阶段发生的化学/物理反应. 使用Vyazovkin和Flynn-Wall-Ozawa方法确定了多步降解阶段, 并根据过程中涉及的化学和物理步骤讨论了各自的贡献. 作为第一种方法, 应用易于使用的方法快速确定多阶段过程. 我们希望这项研究有助于理解未来复杂材料的热降解, 建立初步猜测, 并深入了解生物量的整体分解. 最终结果有助于热解反应器的设计和开发新的动力学方法.

KEYWORDS:

• Degradation kinetics
• microcrystalline cellulose
• curaua fiber
• complex systems

关键词:

• 降解动力学
• 微晶纤维素
• 纤维
• 复杂系统

Disclosure statement

No potential conflict of interest was reported by the author(s).

Supplementary material

Supplemental data for this article can be accessed online at https://doi.org/10.1080/15440478.2022.2105466

Additional information

Funding

This work was supported by CAPES (Coordination for the Improvement of Higher Education Personnel) and Cnpq (National Council for Scientific and Technological Development).