4.6 Article

Gas-phase etherification of cyclopentanol with methanol to cyclopentyl methyl ether catalyzed by zeolites

期刊

APPLIED CATALYSIS A-GENERAL
卷 618, 期 -, 页码 -

出版社

ELSEVIER
DOI: 10.1016/j.apcata.2021.118122

关键词

Asymmetric ether; Cyclopentyl methyl ether; Cyclopentanol; Zeolite catalysts; Gas-phase

资金

  1. Grant Agency of Slovakia [APVV-17-0302]
  2. Ministry of Education, Science, Research and Sport of the Slovak Republic [VEGA 1/0808/18]
  3. Czech Science Foundation [19-27551X, 20-12099S]

向作者/读者索取更多资源

An efficient zeolite-catalyzed one-step synthesis of valuable asymmetric cyclopentyl methyl ether (CPME) was developed using ZSM-5 catalysts with high selectivity and yield. Decreasing Si/Al ratios in ZSM-5 improves conversion without affecting selectivity. FTIR studies suggest a Rideal-Eley mechanism for the advertisement of reactants in ZSM-5.
Symmetric ethers can be synthesized through the acid-catalyzed self-etherification of biomass-derived alcohols. However, synthesis of asymmetric ethers via catalytic cross-etherification of alcohols is limited by poor selectivity. Herein, we developed an efficient zeolite-catalyzed one-step synthesis of valuable asymmetric cyclopentyl methyl ether (CPME) using gas-phase reaction of bio-based cyclopentanol and methanol. Among different medium- (FER, MCM-22, ZSM-5) and large-pore (BEA, MOR, USY) aluminosilicate zeolites, commercial ZSM-5 catalysts with 2D system of intersecting channels are markedly more selective to CPME. The targeted CPME was produced with a selectivity of 83 % and a yield higher than 80 % over the ZSM-5 catalysts with Si/Al ratios ranging from 15 to 40. Decrease in Si/Al ratio in ZSM-5 enhanced the conversion value, while not affecting the selectivity. FTIR study of the step-by-step adsorption of both reactants in ZSM-5 evidenced the Rideal-Eley mechanism with cyclopentanol adsorbed on acid sites. Therefore, heterogeneously catalyzed gas-phase crossetherification of renewable cyclopentanol and methanol is a promising process for large-scale applications thanks to its mild operating conditions, high yields and selectivity when using commercial ZSM-5 zeolites as catalysts.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据