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《石化技术与应用》[ISSN:1009-0046/CN:62-1138/TQ]

期数:

2024年1期

页码:

12-16

栏目:

出版日期:

2024-01-10

文章信息/Info

Title:

Properties and methanol to olefins reaction performance of CuSAPO-34 molecular sieves synthesized by short-time reconstruction method

文章编号:

1009-0045（2024）01-0012-05

作者:

张需鹏

胜华新材料集团股份有限公司，山东 东营 257500

Author(s):

ZHANG Xu-peng

Shenghua New Materials Group Co Ltd， Dongying 257500， China

关键词:

甲醇制烯烃; CuSAPO-34分子筛; 晶种; 重构法; 乙烯; 丙烯; 丁烯

Keywords:

methanol to olefins; CuSAPO-34 molecular sieve ;  seed crystal ;  reconstruction method; ethylene; propylene; butylene

分类号:

TQ 426.6

DOI:

DOI：10.19909/j.cnki.ISSN1009-0045.2024.01.0012

文献标识码:

B

摘要:

以含金属铜的分子筛晶种作为铜源，采用短时重构法合成了CuSAPO-34分子筛，考察了模板剂类型对晶种及CuSAPO-34分子筛性质和甲醇制烯烃反应性能的影响。结果表明：以三乙胺与二乙胺为混合模板剂合成的晶种结晶度较低，晶粒尺寸较小；由该晶种制备的CuSAPO-34分子筛的酸性较强，烯烃选择性高，乙烯选择性为47.41%，乙烯+丙烯+丁烯选择性为90.37%，n（乙烯）/n（丙烯）为1.37。

Abstract:

CuSAPO-34 molecular sieves were synthesized through a short-time reconstruction method by using molecular sieve seeds containing copper as the copper source. The influence of the type of template agent on properties of the seed crystals， CuSAPO-34 molecular sieves and the reaction performance of methanol to olefins was investigated. The results showed that the seed crystal synthesized using triethylamine and diethylamine as mixed template agents had lower crystallinity and smaller grain size; the CuSAPO-34 molecular sieve prepared from this seed crystal had strong acidity and high olefin selectivity. The selectivity of ethylene was 47.41%， the selectivity of ethylene + propylene + butylene was 90.37%， and n（ethylene）/n（propylene）was 1.37.

参考文献/References

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更新日期/Last Update: 2024-01-10