Layer structured bifunctional monolith catalysts for energy-efficient conversion of CO2 to dimethyl ether

被引：6

作者：

Chen, Hai-Ying ^{[1
]}

Pihl, Josh ^{[1
]}

Toops, Todd J. ^{[1
]}

Majumdar, Sreshtha Sinha ^{[1
]}

机构：

[1] Oak Ridge Natl Lab, Natl Transportat Res Ctr, 2360 Cherahala Blvd, Knoxville, TN 37932 USA

来源：

APPLIED CATALYSIS A-GENERAL | 2023年 / 656卷

关键词：

CO2; conversion; Monolith catalyst; Layer structured configuration; Synergistic effect; Catalyst durability; DME SYNTHESIS; SYNTHESIS GAS; HYDROGENATION REACTION; METHANOL DEHYDRATION; HYBRID CATALYSTS; SYSTEMS; SYNGAS; FER; FUNCTIONALITY; PERSPECTIVE;

D O I：

10.1016/j.apcata.2023.119140

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A monolith supported bifunctional catalyst for the direct conversion of CO2 to dimethyl ether was developed and evaluated. The catalyst consists of a layer structured configuration, in which a CuO/ZnO/ZrO2 component for methanol synthesis using CO2 as feedstock and a Ferrierite zeolite component for the subsequent dehydration reaction are washcoated onto the channel surfaces of a metallic monolith substrate as two consecutive layers. The metal substrate provides heat conduction to regulate the catalyst bed temperature. The layered configuration significantly improves the synergistic effects of the two components, resulting in a 20% increase in the pro-ductivity for dimethyl ether at 240 degrees C as compared with the conventional catalysts with the two components being blended in various levels of proximity. Additionally, the layer structured design minimizes the undesirable interaction between the two components and drastically improves the on-stream durability of the catalyst. No activity decline was observed in a 146-h performance test.

引用

页数：8

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