Effects of nitrogen-doping coupled with alkali activation sugarcane bagasse on adsorption performances of CO<sub>2</sub> from flue gas

ZHANG Yiyu; QIAO Lin; YUAN Pengfei; ZHANG Ze; FU Dong; ZHANG Pan

doi:10.12434/j.issn.2097-2547.20260083

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Effects of nitrogen-doping coupled with alkali activation sugarcane bagasse on adsorption performances of CO₂ from flue gas

更新时间：2026-05-27

- Effects of nitrogen-doping coupled with alkali activation sugarcane bagasse on adsorption performances of CO₂ from flue gas
- Pages: 1-14(2026)
- 作者机构：
  
  华北电力大学（保定）环境科学与工程系，河北保定 071003
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20260083
  CLC： TQ424
- Received：24 February 2026，
  
  Revised：2026-03-30，
  
  Online First：26 May 2026，
- 稿件说明：
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张怡愉,乔琳,袁鹏飞等.氮掺杂耦合碱活化的甘蔗渣对吸附烟气中CO₂性能的影响[J].低碳化学与化工,

ZHANG Yiyu,QIAO Lin,YUAN Pengfei,et al.Effects of nitrogen-doping coupled with alkali activation sugarcane bagasse on adsorption performances of CO₂ from flue gas[J].Low-Carbon Chemistry and Chemical Engineering,
张怡愉,乔琳,袁鹏飞等.氮掺杂耦合碱活化的甘蔗渣对吸附烟气中CO₂性能的影响[J].低碳化学与化工, DOI：10.12434/j.issn.2097-2547.20260083.

ZHANG Yiyu,QIAO Lin,YUAN Pengfei,et al.Effects of nitrogen-doping coupled with alkali activation sugarcane bagasse on adsorption performances of CO₂ from flue gas[J].Low-Carbon Chemistry and Chemical Engineering, DOI：10.12434/j.issn.2097-2547.20260083.

摘要

工业快速发展导致CO

过量排放，这加剧了温室效应。为开发高效经济的CO

吸附剂，分别以廉价生物质甘蔗渣、三聚氰胺和KOH作为碳源、氮源和活化剂，通过调控活化温度与活化剂比例，制备了一系列氮掺杂耦合KOH活化的CO

吸附剂，并对其结构和CO

吸附性能等进行了评价。结果表明，KOH与三聚氰胺（质量分数为15%）掺杂甘蔗渣的质量比为1且经700 ℃活化制备的CO

吸附剂（SGN-700-1）表现出良好的CO

吸附性能，在1 bar（1 bar = 0.1 MPa）下，其CO

静态吸附容量分别为5.76 mmol/g（0 ℃）和3.55 mmol/g（25 ℃）；CO

动态吸附容量可达2.04 mmol/g（25 ℃），CO

吸附选择性高达24（25 ℃）。在5次循环后，SGN-700-1的CO

吸附性能可保持稳定。机理分析结果表明，氮掺杂提供的化学增强作用与KOH活化提供的物理结构优化作用相互耦合，对提高CO

吸附性能具有协

同作用。

Abstract

The rapid industrial development has led to excessive CO

emissions

which further exacerbates the greenhouse effect. To develop high-efficiency and cost-effective CO

adsorbents

low-cost sugarcane bagasse

melamine and KOH were selected as the carbon source

nitrogen source and activator

respectively. A series of nitrogen-doping coupled with KOH activation CO

adsorbents were fabricated by regulating the activation temperature and activator ratio

and their microstructure as well as CO

adsorption properties were evaluated. The results demonstrate that the adsorbent (SGN-700-1) prepared with mass ratio of KOH to melamine-doped bagasse of 1 (melamine mass fraction of 15%) and activated at 700 ℃ exhibits excellent CO

adsorption performance. At 1 bar (1 bar = 0.1 MPa)

its static CO

adsorption amount reaches 5.76 mmol/g at 0 ℃ and 3.55 mmol/g at 25 ℃

respectively. Meanwhile

the CO

dynamic adsorption amount is up to 2.04 mmol/g at 25 ℃

and the CO

adsorption selectivity is as high as 24 at 25 ℃. After five cycles

the CO

adsorption performance of SGN-700-1 can maintain stable. Mechanism analysis result shows that the chemical enhancement induced by nitrogen doping is coupled with the physical structure optimization derived from KOH activation

presenting a synergistic effect on the improvement of CO

adsorption performance.

关键词

Keywords

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Effects of nitrogen-doping coupled with alkali activation sugarcane bagasse on adsorption performances of CO2 from flue gas

DOI：10.12434/j.issn.2097-2547.20260083

摘要

Abstract

关键词

Keywords

references

Effects of nitrogen-doping coupled with alkali activation sugarcane bagasse on adsorption performances of CO₂ from flue gas