Study on synthesis of SAPO-34 zeolites with low-dosage organic template and their catalytic performances for methanol to olefins

JIA Yuqing; ZUO Leijie; LI Yonghui; SHEN Xuefeng

doi:10.12434/j.issn.2097-2547.20250288

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Study on synthesis of SAPO-34 zeolites with low-dosage organic template and their catalytic performances for methanol to olefins

更新时间：2026-06-25

- Study on synthesis of SAPO-34 zeolites with low-dosage organic template and their catalytic performances for methanol to olefins
- Vol. 51, Issue 6, Pages: 30-36(2026)
- 作者机构：
  
  1.中安联合煤化有限责任公司，安徽淮南 232092
  2.中石化（上海）石油化工研究院有限公司绿色化工与工业催化全国重点实验室，上海 201208
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20250288
  CLC： TQ426.6
- Received：30 June 2025，
  
  Revised：2025-08-07，
  
  Published：25 June 2026
- 稿件说明：
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贾玉清,左磊杰,李永辉等.低有机模板剂用量合成SAPO-34分子筛及其甲醇制烯烃催化性能研究[J].低碳化学与化工,2026,51(6):30-36.

JIA Yuqing,ZUO Leijie,LI Yonghui,et al.Study on synthesis of SAPO-34 zeolites with low-dosage organic template and their catalytic performances for methanol to olefins[J].Low-Carbon Chemistry and Chemical Engineering,2026,51(6):30-36.
贾玉清,左磊杰,李永辉等.低有机模板剂用量合成SAPO-34分子筛及其甲醇制烯烃催化性能研究[J].低碳化学与化工,2026,51(6):30-36. DOI： 10.12434/j.issn.2097-2547.20250288.

JIA Yuqing,ZUO Leijie,LI Yonghui,et al.Study on synthesis of SAPO-34 zeolites with low-dosage organic template and their catalytic performances for methanol to olefins[J].Low-Carbon Chemistry and Chemical Engineering,2026,51(6):30-36. DOI： 10.12434/j.issn.2097-2547.20250288.

摘要

为了合成纯相的SAPO-34分子筛并使其具有较好的甲醇制烯烃（MTO）催化性能，一般需要添加较多的有机模板剂。然而，较高的有机模板剂用量不仅会提高SAPO-34分子筛的合成成本，而且在后处理的过程中还会对环境产生污染。在低有机模板剂添加量下（

(三乙胺+四乙基氢氧化铵):

) = 1.7:1.0），添加氨水和不添加氨水分别导向合成了SAPO-34分子筛。结果表明，相对于不添加氨水合成的SAPO-34分子筛（C-SAPO-34），添加氨水合成的SAPO-34分子筛（L-SAPO-34）的结晶度升高，晶体骨架中硅含量升高，酸强度升高。L-SAPO-34的晶体骨架中，硅原子以Si(Al)

形式存在，较高的硅含量说明存在较多的反应活性位点。反应活性位点增多有利于减小每个活性位点在MTO反应中的甲醇分压，有助于提高双烯（乙烯+丙烯）选择性，同时，也可以降低积炭速率，延长分子筛的使用寿命。

Abstract

In order to synthesize pure phase SAPO-34 zeolites with good catalytic performances for methanol to olefins

it is often necessary to add a large amount of organic template agent. However

a large amount of organic template agent no

t only increases the synthesis cost of SAPO-34 zeolites

but also pollutes the environment during the post-treatment process. With low-dosage template addition (

(triethylamine + tetraethylammonium hydroxide):

) = 1.7:1.0)

SAPO-34 zeolites were synthesized with and without ammonia. The results show that compared to SAPO-34 zeolite synthesized without ammonia (C-SAPO-34)

the SAPO-34 zeolite synthesized with ammonia (L-SAPO-34) exhibits higher crystallinity

higher silicon content (mass fraction) in the crystal framework and higher acid strength. In the crystal framework of L-SAPO-34

silicon atoms exist in the form of Si(Al)

then a higher content of silicon indicates the presence of more active sites. More active sites can reduce the partial pressure of methanol of each active site in MTO reaction

which is beneficial for improving the selectivity of dienes (ethylene + propylene)

reducing the coking rate and prolonging the service life of zeolites.

关键词

Keywords

references

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