SSZ-13分子筛硅铝比调控及其甲醇选择性制烯烃催化性能研究

贾菲; 李海鹏; 王家琪; 熊瑞佳; 何英洛; 田幸; 李坪; 高新华

doi:10.12434/j.issn.2097-2547.20250450

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SSZ-13分子筛硅铝比调控及其甲醇选择性制烯烃催化性能研究

更新时间：2026-05-08

- SSZ-13分子筛硅铝比调控及其甲醇选择性制烯烃催化性能研究
- Study on regulation of silica-alumina ratios of SSZ-13 zeolites and their catalytic performances for methanol to olefins reaction
- 低碳化学与化工 2026: 1-10.
- 作者机构：
  
  1.宁夏大学化学化工学院省部共建煤炭高效利用与绿色化工国家重点实验室，宁夏银川 750021
  2.宁夏计量质量检验检测研究院，国家煤及煤化工产品质量检验检测中心（宁夏），宁夏银川 750200
  3.富山大学工学部应用化学系，富山 930-8555
  4.聊城市特种设备检验研究院，山东聊城 252000
- 作者简介：
  
  贾菲（1999—），硕士研究生，研究方向为CO2催化转化，E-mail：2485204147@qq.com。
  李海鹏（1999—），硕士，研究方向为CO2催化转化，E-mail：lihp_nxu@163.com；
  高新华（1990—），博士，研究员，研究方向为碳一化学，E-mail：gxh@nxu.edu.cn。
- 基金信息：
  
  宁夏回族自治区自然科学基金(2024AAC03407;2022AAC03040)
- DOI：10.12434/j.issn.2097-2547.20250450
  中图分类号： TQ426;O643.3
- 收稿：2025-11-25，
  
  修回：2026-01-05，
  
  网络首发：2026-05-07，
- 稿件说明：
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贾菲,李海鹏,王家琪等.SSZ-13分子筛硅铝比调控及其甲醇选择性制烯烃催化性能研究[J].低碳化学与化工,

JIA Fei,LI Haipeng,WANG Jiaqi,et al.Study on regulation of silica-alumina ratios of SSZ-13 zeolites and their catalytic performances for methanol to olefins reaction[J].Low-Carbon Chemistry and Chemical Engineering,
贾菲,李海鹏,王家琪等.SSZ-13分子筛硅铝比调控及其甲醇选择性制烯烃催化性能研究[J].低碳化学与化工, DOI：10.12434/j.issn.2097-2547.20250450.

JIA Fei,LI Haipeng,WANG Jiaqi,et al.Study on regulation of silica-alumina ratios of SSZ-13 zeolites and their catalytic performances for methanol to olefins reaction[J].Low-Carbon Chemistry and Chemical Engineering, DOI：10.12434/j.issn.2097-2547.20250450.

摘要

甲醇制烯烃（MTO）反应作为一条非石油路线生产低碳烯烃（C

=~C

=）备受关注。具有CHA拓扑结构的SSZ-13分子筛因其孔道结构有序和Brønsted酸位点丰富，在MTO反应中展现出优异的催化潜力。然而，强Brønsted酸位点导致SSZ-13分子筛在反应过程中易积炭失活。采用脱铝改性策略，制备了不同浓度HNO

改性SSZ-13分子筛，通过XRD、SEM和N

物理吸/脱附等技术对HNO

改性前后SSZ-13分子筛进行了表征，并在固定床反应器上对其进行了MTO催化性能评价。结果表明，在350 °C、0.1 MPa下，改性前后SSZ-13分子筛的甲醇初始转化率接近100%，低碳烯烃选择性超过91.0%。随着HNO

溶液浓度从0.5 mol/L升高至5.0 mol/L，SSZ-13分子筛的硅铝比（

(SiO

(Al

)）从16（SSZ-13-0.5H）升高至21（SSZ-13-5.0H）。在MTO反应中，改性后的SSZ-13-5.0H的催化寿命延长至8.0 h。本研究可为延长SSZ-13分子筛在MTO反应中的催化寿命提供理论支撑。

Abstract

The methanol to olefins (MTO) reaction has attracted significant attention as a non-petroleum route for producing light olefins (C

=~C

=). SSZ-13 zeolites with CHA topology exhibit excellent catalytic potential in the MTO reaction due to their well-ordered pore structures and abundant Brønsted acid sites. However

the strong Brønsted acid sites leads to the inactivation of carbon deposition of SSZ-13 zeolites during the reaction. By dealuminization and modification strategy

SSZ-13 zeolites modified by HNO

with different concentrations were prepared. The SSZ-13 zeolites before and after modification were characterized by XRD

SEM

physical adsorption/desorption

etc.

and the catalytic performances for MTO of the SSZ-13 zeolites were evaluated on a fixed-bed reactor. The results show that under conditions of 350 ℃ and 0.1 MPa

initial methanol conversion rates of SSZ-13 zeolites before and after modification are close to 100% and the selectivities of low-carbon olefins exceed 91.0%. As the concentration of the HNO

solution increases from 0.5 mol/L to 5.0 mol/L

the silica-alumina ratio (

(SiO

(Al

)) increases from 16 (SSZ-13-0.5H) to 21 (SSZ-13-5.0H). The catalytic lifetime of SSZ-13-5.0H after modification is extended to 8.0 h in the MTO reaction. This study can provide theoretical support for achieving long catalytic lifetime of SSZ-13 zeolites in MTO reactions.

关键词

Keywords

references

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