废粘土砖合成A型分子筛和A/X共晶分子筛及其CO<sub>2</sub>吸附性能

陈云; 龚海淳; 许培峰; 马永清; 王君雅; 张玉

doi:10.12434/j.issn.2097-2547.20240170

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废粘土砖合成A型分子筛和A/X共晶分子筛及其CO₂吸附性能

分离材料与净化技术

- 废粘土砖合成A型分子筛和A/X共晶分子筛及其CO₂吸附性能
- Synthesis of type A zeolite and A/X eutectic zeolite from waste clay brick and their CO₂ adsorption performances
- 低碳化学与化工 2025, 50(1): 101-110.
- 作者机构：
  
  1.昆明理工大学环境科学与工程学院，云南昆明 650031
  2.昆明理工大学冶金与化工行业废气资源化国家地方联合工程研究中心，云南昆明 650031
- 作者简介：
  
  陈云（1998—），硕士研究生，研究方向为碳捕集与资源化利用，E-mail：chenyun2167@foxmail.com。
  王君雅（1983—），博士，教授，研究方向为碳捕集与资源化利用，E-mail：junyawang@kust.edu.cn；
  张玉（1995—），博士，讲师，研究方向为碳捕集与资源化利用，E-mail：zhangyu_kust@163.com。
- 基金信息：
  
  云南省重点研发计划(202303AC100008);云南省应用基础研究计划(202101AT070107)
- DOI：10.12434/j.issn.2097-2547.20240170
  中图分类号： TQ424
- 纸质出版日期：2025-01-25，
  
  收稿日期：2024-04-20，
  
  修回日期：2024-07-17，
- 稿件说明：
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陈云, 龚海淳, 许培峰, 等. 废粘土砖合成A型分子筛和A/X共晶分子筛及其CO₂吸附性能[J]. 低碳化学与化工, 2025,50(1):101-110.

CHEN YUN, GONG HAICHUN, XU PEIFENG, et al. Synthesis of type A zeolite and A/X eutectic zeolite from waste clay brick and their CO₂ adsorption performances. [J]. Low-carbon chemistry and chemical engineering, 2025, 50(1): 101-110.
陈云, 龚海淳, 许培峰, 等. 废粘土砖合成A型分子筛和A/X共晶分子筛及其CO₂吸附性能[J]. 低碳化学与化工, 2025,50(1):101-110. DOI： 10.12434/j.issn.2097-2547.20240170.

CHEN YUN, GONG HAICHUN, XU PEIFENG, et al. Synthesis of type A zeolite and A/X eutectic zeolite from waste clay brick and their CO₂ adsorption performances. [J]. Low-carbon chemistry and chemical engineering, 2025, 50(1): 101-110. DOI： 10.12434/j.issn.2097-2547.20240170.

摘要

固体废物资源化利用具有重要意义。以废粘土砖为原料，采用水热法合成了高CO

吸附性能的A型分子筛和A/X共晶分子筛。研究了碱灰比（质量比）、煅烧温度、晶化温度和晶化时间对废粘土砖基分子筛合成的影响，采用XRD、XRF、SEM、N

吸/脱附和FTIR等手段对分子筛进行了表征。结果表明，硅铝比（物质的量之比）固定为1，在碱灰比分别为0.6和1.6、煅烧温度为750 ℃、晶化温度为90 ℃和晶化时间为24 h的条件下，合成了最佳形貌的A型分子筛和A/X共晶分子筛。测试发现，二者比表面积分别为61.3 m

/g和326.7 m

/g，30 ℃、CO

气氛（CO

体积分数为10%）下CO

的吸附量分别为2.96 mmol/g和3.22 mmol/g，再生5次后的吸附量均能维持在初始吸附量的88%以上。通过吸附动力学模型和限速扩散模型，对两种分子筛的CO

吸附机理进行了研究，发现CO

分子由于内/外孔扩散以及分子间库仑引力而吸附在分子筛上，主要为物理吸附。本研究可为废粘土砖基分子筛的合成及其应用提供参考。

Abstract

The utilization of solid waste resources is of important significance. Waste clay brick was used as the raw material to synthesize high CO

adsorption performance type A zeolite and A/X eutectic zeolite through the hydrothermal method. The effects of alkali to ash ratio (mass ratio)

calcination temperature

crystallization temperature and crystallization time on the synthesis of zeolite from waste clay brick were investigated. The synthesized zeolites were characterized using XRD

XRF

SEM

adsorption/desorption and FTIR. The results show that

with a fixed Si to Al ratio (mole ratio) of 1

the optimal morphology of type A zeolite and A/X eutectic zeolite is obtained under the conditions of an alkali to ash ratio of 0.6 and 1.6

respectively

calcination temperature of 750 ℃

crystallization temperature of 90 ℃ and crystallization time of 24 h. Testing reveals that their specific surface areas are 61.3 m²/g and 326.7 m²/g

and their CO

adsorption capacities are 2.96 mmol/g and 3.22 mmol/g at 30 ℃ under a CO

atmosphere (CO

volume fraction of 10%)

respectively. After five regeneration cycles

their adsorption capacities remain above 88% of the initial a

dsorption capacity. The CO

adsorption mechanism of the two zeolites was studied through adsorption kinetics and rate-limiting diffusion models. It is found that CO

molecules are adsorbed on the zeolites due to internal/external pore diffusion and intermolecular Coulomb forces

mainly through physical adsorption. This study can provide a reference for the synthesis and application of zeolites from waste clay brick.

关键词

废粘土砖A型分子筛A/X共晶分子筛CO2吸附

Keywords

waste clay bricktype A zeoliteA/X eutectic zeoliteCO2 adsorption

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关联资源

金属有机骨架/碳气凝胶复合吸附剂对模拟烟气中CO₂的吸附性能

废粘土砖合成A型分子筛和A/X共晶分子筛及其CO2吸附性能

Synthesis of type A zeolite and A/X eutectic zeolite from waste clay brick and their CO2 adsorption performances

DOI：10.12434/j.issn.2097-2547.20240170

摘要

Abstract

关键词

Keywords

references

废粘土砖合成A型分子筛和A/X共晶分子筛及其CO₂吸附性能

Synthesis of type A zeolite and A/X eutectic zeolite from waste clay brick and their CO₂ adsorption performances