Torrefaction characteristics of cellulose loaded with boric acid

Zhiguang Yang; Yaochao Zhang; Xinfeng Zhu; Yanli Mao; Junfeng Wu; Songtao Chen; Ruimei Fan; Zhisheng Yu

doi:10.1016/j.carres.2022.108709

Torrefaction characteristics of cellulose loaded with boric acid

Carbohydr Res. 2023 Jan:523:108709. doi: 10.1016/j.carres.2022.108709. Epub 2022 Oct 31.

Authors

Zhiguang Yang¹, Yaochao Zhang², Xinfeng Zhu², Yanli Mao², Junfeng Wu², Songtao Chen², Ruimei Fan³, Zhisheng Yu⁴

Affiliations

¹ Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, 467036, China; College of Resources and Environment, Chinese Academy of Sciences, Beijing, 100085, China. Electronic address: yzhguang@163.com.
² Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, 467036, China.
³ Department of Physiology and Neurobiology, Sino-UK Joint Laboratory for Brain Function and Injury, Xinxiang Medical University, Xinxiang, 453003, China.
⁴ College of Resources and Environment, Chinese Academy of Sciences, Beijing, 100085, China.

PMID: 36368078
DOI: 10.1016/j.carres.2022.108709

Abstract

To explore the catalytic effect of boric acid on biomass, cellulose loaded with boric acid was roasted by a tubular furnace. The gaseous products were adsorbed by activated carbon and then analyzed by GC-MS. Boric acid was shown to improve the selectivity of the product levoglucosenone (LGO). The effects of the parameters such as boric acid loading, nitrogen flow, and temperature on the torrefaction behavior of cellulose were investigated. In the studied temperature range of 240-420 °C, the yield of LGO first increases and then decreases. In addition, its yield increases directly with increasing nitrogen flow rate. The results show that the highest LGO yield of 6.64% (analytical value) can be obtained under 10% (w/w) boric acid loading, 380 °C and nitrogen flow rate of 65 ml/min conditions.

Keywords: Boric acid; Cellulose; Levoglucosenone; Torrefaction.

MeSH terms

Biomass
Boric Acids*
Cellulose*
Nitrogen
Temperature

Substances

Cellulose
boric acid
Boric Acids
Nitrogen