Study on the catalytic degradation of sodium lignosulfonate to aromatic aldehydes over nano-CuO: Process optimization and reaction kinetics

Yingjie Song; Shuqi Zhong; Yingjiao Li; Kun Dong; Yong Luo; Guangwen Chu; Haikui Zou; Baochang Sun

doi:10.1016/j.cjche.2021.12.028

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Study on the catalytic degradation of sodium lignosulfonate to aromatic aldehydes over nano-CuO: Process optimization and reaction kinetics

Full Length Article | Updated：2026-01-06

- Study on the catalytic degradation of sodium lignosulfonate to aromatic aldehydes over nano-CuO: Process optimization and reaction kinetics
- Study on the catalytic degradation of sodium lignosulfonate to aromatic aldehydes over nano-CuO: Process optimization and reaction kinetics
- 中国化学工程学报（英文版） 2023年53卷第1期页码：300-309
- Affiliations：
  
  1. State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology,Beijing,China,100029
  2. Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology,Beijing,China,100029
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2021.12.028
  中图分类号：
- 纸质出版：2023
- Accepted：
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Yingjie Song, Shuqi Zhong, Yingjiao Li, 等. Study on the catalytic degradation of sodium lignosulfonate to aromatic aldehydes over nano-CuO: Process optimization and reaction kinetics[J]. 中国化学工程学报（英文版）, 2023,53(1):300-309.

Yingjie Song, Shuqi Zhong, Yingjiao Li, Kun Dong, Yong Luo, Guangwen Chu, Haikui Zou, Baochang Sun. Study on the catalytic degradation of sodium lignosulfonate to aromatic aldehydes over nano-CuO: Process optimization and reaction kinetics[J]. Chinese Journal of Chemical Engineering, 2023, 53(1): 300-309.
Yingjie Song, Shuqi Zhong, Yingjiao Li, 等. Study on the catalytic degradation of sodium lignosulfonate to aromatic aldehydes over nano-CuO: Process optimization and reaction kinetics[J]. 中国化学工程学报（英文版）, 2023,53(1):300-309. DOI： 10.1016/j.cjche.2021.12.028.

Yingjie Song, Shuqi Zhong, Yingjiao Li, Kun Dong, Yong Luo, Guangwen Chu, Haikui Zou, Baochang Sun. Study on the catalytic degradation of sodium lignosulfonate to aromatic aldehydes over nano-CuO: Process optimization and reaction kinetics[J]. Chinese Journal of Chemical Engineering, 2023, 53(1): 300-309. DOI： 10.1016/j.cjche.2021.12.028.

摘要

Abstract

As one of the few renewable aromatic resources

the research of depolymerization of lignin into high-value chemicals has attracted extensive attention in recent years. Catalytic wet aerobic oxidation (CWAO) is an effective technology to convert lignin like sodium lignosulfonate (SL)

a lignin derivative

into aromatic aldehydes such as vanillin and syringaldehyde. However

how to improve the yield of aromatic aldehyde and conversion efficiency is still a challenge

and many operating conditions that significantly affect the yield of these aromatic compounds have rarely been investigated systematically. In this work

we adopted the stirred tank reactor (STR) for the CWAO process with nano-CuO as catalyst to achieve the conversion of SL into vanillin and syringaldehyde. The effect of operating conditions including reaction time

oxygen partial pressure

reaction temperature

SL concentration

rotational speed

catalyst amount

and NaOH concentration on the yield of single phenolic compound was systematically investigated. The results revealed that all these operating conditions exhibit a significant effect on the aromatic aldehyde yield. Therefore

they should be regulated in an optimal value to obtain high yield of these aldehydes. More importantly

the reaction kinetics of the lignin oxidation was explored. This work could provide basic data for the optimization and design of industrial operation of lignin oxidation.

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