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T沸石的合成及其CH4/N2吸附分离性能研究
Study on synthesis of T-zeolite and its CH4/N2 adsorption and separation performance
- 低碳化学与化工 2025, 50(7): 67-71.
- 作者机构：
1.山西焦煤集团有限责任公司炼焦煤清洁利用实验室分公司，山西 太原 030027
2.炼焦煤智慧评价与高效 利用山西省重点实验室，山西 太原 030027
3.太原理工大学 气体能源高效清洁利用山西省重点实验室， 山西 太原 030024
- 作者简介：
刘晋芳（1982—），硕士，高级工程师，研究方向为煤炭清洁高效利用，E-mail：87315157@qq.com。
杨江峰（1982—），博士，教授，研究方向为气体吸附分离，E-mail：yangjiangfeng@tyut.edu.cn。
- 基金信息：国家自然科学基金面上项目(22378287;22478272)
DOI：10.12434/j.issn.2097-2547.20240353
中图分类号： TQ028.1收稿日期：2024-08-27，
修回日期：2024-10-10，
纸质出版日期：2025-07-25
- 稿件说明：
移动端阅览
刘晋芳,金晓宇,李媛等.T沸石的合成及其CH4/N2吸附分离性能研究[J].低碳化学与化工,2025,50(07):67-71.
LIU Jinfang,JIN Xiaoyu,LI Yuan,et al.Study on synthesis of T-zeolite and its CH4/N2 adsorption and separation performance[J].Low-Carbon Chemistry and Chemical Engineering,2025,50(07):67-71.
刘晋芳,金晓宇,李媛等.T沸石的合成及其CH4/N2吸附分离性能研究[J].低碳化学与化工,2025,50(07):67-71. DOI： 10.12434/j.issn.2097-2547.20240353.
LIU Jinfang,JIN Xiaoyu,LI Yuan,et al.Study on synthesis of T-zeolite and its CH4/N2 adsorption and separation performance[J].Low-Carbon Chemistry and Chemical Engineering,2025,50(07):67-71. DOI： 10.12434/j.issn.2097-2547.20240353.
摘要
低浓度煤层气CH
4
富集过程需要高性能CH
4
/N
2
吸附剂。采用水热法成功合成了T沸石，并利用PXRD、SEM和N
2
吸/脱附等手段对其进行了表征。测试了T沸石的CH
4
、N
2
单组分吸附性能，计算了其理想吸附溶液理论（IAST）选择性和吸附热，并考察了T沸石的CH
4
/N
2
吸附分离性能。结果表明，在298 K、0.1 MPa条件下，T沸石（Tz-168）的CH
4
吸附量为21.4 cm
3
/g，CH
4
/N
2
选择性为5.5，优于大多数分子筛吸附剂。通过CH
4
/N
2
混合气穿透实验进一步验证了T沸石具有良好的CH
4
/N
2
吸附分离性能，
V
(CH
4
):
V
(N
2
)为50:50和20:80时，实际分离时间分别为5 min和7 min，这在低浓度煤层气CH
4
富集中具有较大的应用潜力。
Abstract
The enrichment of CH
4
in low-concentration coalbed methane requires high-performance CH
4
/N
2
adsorbents. T-zeolite was successfully synthesized using a hydrothermal method and characterized by PXRD
SEM
and N
2
adsorp
tion/desorption. The CH
4
and N
2
single-component adsorption performance of T-zeolite was tested
and its Ideal Adsorbed Solution Theory (IAST) selectivity and adsorption heat were calculated. The CH
4
/N
2
separation performance of T-zeolite was also investigated. The results show that at 298 K and 0.1 MPa
the CH
4
adsorption capacity of T-zeolite (Tz-168) is 21.4 cm
3
/g
and the CH
4
/N
2
selectivity of T-zeolite is 5.5
which is better than most molecular sieve adsorbents. CH
4
/N
2
mixture permeation experiments further confirm that T-zeolite exhibits excellent CH
4
/N
2
separation performance
with actual separation time of 5 min and 7 min at
V
(CH
4
):
V
(N
2
) of 50:50 and 20:80
respectively. This has significant application potential in the enrichment of CH
4
from low-concentration coalbed methane.
关键词
Keywords
references
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