Enhanced methanol-to-olefin catalysis with hierarchical ZSM-5@SAPO-34 composite derived from magadiite

IF 3.2 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Journal of Solid State Chemistry Pub Date : 2025-03-12 DOI:10.1016/j.jssc.2025.125320
Bo Liu , Chenxi Hou , Yu Gao , Jiamin Chen , Qiong Zhang , Qi Zhou , Hanlu Xu , Zihan Zhou , Yuan Gao , Rongli Jiang
{"title":"Enhanced methanol-to-olefin catalysis with hierarchical ZSM-5@SAPO-34 composite derived from magadiite","authors":"Bo Liu ,&nbsp;Chenxi Hou ,&nbsp;Yu Gao ,&nbsp;Jiamin Chen ,&nbsp;Qiong Zhang ,&nbsp;Qi Zhou ,&nbsp;Hanlu Xu ,&nbsp;Zihan Zhou ,&nbsp;Yuan Gao ,&nbsp;Rongli Jiang","doi":"10.1016/j.jssc.2025.125320","DOIUrl":null,"url":null,"abstract":"<div><div>We synthesized hierarchical ZSM-5@SAPO-34 (Z@S) composites using magadiite as a silicon precursor to enhance methanol-to-olefins catalysis. The process involves incorporating ZSM-5, with its nanosheet-aggregated spherical structure, into a SAPO-34 precursor gel. By adjusting crystallization times and seed loading, an optimized composite structure was achieved. Powder X-ray diffraction (PXRD) confirms the presence of highly crystalline SAPO-34 and ZSM-5 phases in the Z@S composite. SEM images shows that the composite is not merely a mechanical mixture but involves secondary crystallization of SAPO-34 on ZSM-5 surfaces, with ZSM-5 acting as both the seed and silica source. N<sub>2</sub> adsorption-desorption tests demonstrates that the Z@S composite has a larger specific surface area and micropore volume compared to SAPO-34, ZSM-5, or physical mixed Z@S-PM. Temperature-programmed desorption of ammonia (NH<sub>3</sub>-TPD) analysis indicates superior acid strength and a higher density of acid sites in the Z@S composites, contributing to their enhanced catalytic efficacy. We then compared the catalytic performance of SAPO-34, ZSM-5, Z@S-PM, and Z@S. The Z@S composite, featuring hierarchical structure of interconnected mesopores and micropores, promotes efficient diffusion and transport of reactants and products. This result in enhanced resistance to coking within 71 h and 60.0 % selectivity for ethylene and propylene.</div></div>","PeriodicalId":378,"journal":{"name":"Journal of Solid State Chemistry","volume":"347 ","pages":"Article 125320"},"PeriodicalIF":3.2000,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Solid State Chemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0022459625001434","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0

Abstract

We synthesized hierarchical ZSM-5@SAPO-34 (Z@S) composites using magadiite as a silicon precursor to enhance methanol-to-olefins catalysis. The process involves incorporating ZSM-5, with its nanosheet-aggregated spherical structure, into a SAPO-34 precursor gel. By adjusting crystallization times and seed loading, an optimized composite structure was achieved. Powder X-ray diffraction (PXRD) confirms the presence of highly crystalline SAPO-34 and ZSM-5 phases in the Z@S composite. SEM images shows that the composite is not merely a mechanical mixture but involves secondary crystallization of SAPO-34 on ZSM-5 surfaces, with ZSM-5 acting as both the seed and silica source. N2 adsorption-desorption tests demonstrates that the Z@S composite has a larger specific surface area and micropore volume compared to SAPO-34, ZSM-5, or physical mixed Z@S-PM. Temperature-programmed desorption of ammonia (NH3-TPD) analysis indicates superior acid strength and a higher density of acid sites in the Z@S composites, contributing to their enhanced catalytic efficacy. We then compared the catalytic performance of SAPO-34, ZSM-5, Z@S-PM, and Z@S. The Z@S composite, featuring hierarchical structure of interconnected mesopores and micropores, promotes efficient diffusion and transport of reactants and products. This result in enhanced resistance to coking within 71 h and 60.0 % selectivity for ethylene and propylene.

Abstract Image

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
利用岩浆石衍生的分层 ZSM-5@SAPO-34 复合材料增强甲醇制烯烃催化性能
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
Journal of Solid State Chemistry
Journal of Solid State Chemistry 化学-无机化学与核化学
CiteScore
6.00
自引率
9.10%
发文量
848
审稿时长
25 days
期刊介绍: Covering major developments in the field of solid state chemistry and related areas such as ceramics and amorphous materials, the Journal of Solid State Chemistry features studies of chemical, structural, thermodynamic, electronic, magnetic, and optical properties and processes in solids.
期刊最新文献
Morphology-optimized ZnSnO3 nanopentagons as efficient electron transport layers for high-efficient perovskite solar cells Editorial Board Contents continued Enhanced methanol-to-olefin catalysis with hierarchical ZSM-5@SAPO-34 composite derived from magadiite Tuning thermal expansion and phase transition temperature with Mg substitution in Zn2V2O7
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1