Direct and Oriented Conversion of CO                         2                          into Value-Added Aromatics

Yang Wang; Weizhe Gao; Shun Kazumi; Hangjie Li; Guohui Yang; Noritatsu Tsubaki

doi:10.1002/chem.201806165

Direct and Oriented Conversion of CO ₂ into Value-Added Aromatics

Yang Wang, Weizhe Gao, Shun Kazumi, Hangjie Li, Guohui Yang^*, Noritatsu Tsubaki

^*Corresponding author for this work

Applied Chemistry

Research output: Contribution to journal › Article › peer-review

124 Scopus citations

Abstract

The oriented conversion of CO ₂ into target high-value chemicals is an effective way to reduce carbon emissions, but still presents a challenge. In this communication, we report the oriented conversion of CO ₂ into value-added aromatics, especially para-xylene, in a single pass by combining core–shell structured Zn-doped H-ZSM-5 (Zn-ZSM-5@SiO ₂ ) and a Cr ₂ O ₃ component. Through precise regulation of the acidity of Zn-ZSM-5@SiO ₂ , high para-xylene selectivity (38.7 % in the total products) at a CO ₂ conversion of 22.1 % was achieved. Furthermore, a CO ₂ -assisted effect in the synthesis of aromatics during the tandem process has been clarified through a control experiment. The CO ₂ reactant can act as a hydrogen acceptor to accelerate the dehydrogenation of alkenes, intermediates in the synthesis of aromatics, thereby increasing the driving force towards aromatics in the tandem reaction process.

Original language	English
Pages (from-to)	5149-5153
Number of pages	5
Journal	Chemistry - A European Journal
Volume	25
Issue number	20
DOIs	https://doi.org/10.1002/chem.201806165
State	Published - 2019/04/05

Keywords

CO conversion
bifunctional catalysts
green chemistry
xylenes
zeolites

ASJC Scopus subject areas

Catalysis
Organic Chemistry

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10.1002/chem.201806165

Cite this

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title = " Direct and Oriented Conversion of CO 2 into Value-Added Aromatics ",

abstract = " The oriented conversion of CO 2 into target high-value chemicals is an effective way to reduce carbon emissions, but still presents a challenge. In this communication, we report the oriented conversion of CO 2 into value-added aromatics, especially para-xylene, in a single pass by combining core–shell structured Zn-doped H-ZSM-5 (Zn-ZSM-5@SiO 2 ) and a Cr 2 O 3 component. Through precise regulation of the acidity of Zn-ZSM-5@SiO 2 , high para-xylene selectivity (38.7 % in the total products) at a CO 2 conversion of 22.1 % was achieved. Furthermore, a CO 2 -assisted effect in the synthesis of aromatics during the tandem process has been clarified through a control experiment. The CO 2 reactant can act as a hydrogen acceptor to accelerate the dehydrogenation of alkenes, intermediates in the synthesis of aromatics, thereby increasing the driving force towards aromatics in the tandem reaction process.",

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AU - Wang, Yang

AU - Gao, Weizhe

AU - Kazumi, Shun

AU - Li, Hangjie

AU - Yang, Guohui

AU - Tsubaki, Noritatsu

PY - 2019/4/5

Y1 - 2019/4/5

N2 - The oriented conversion of CO 2 into target high-value chemicals is an effective way to reduce carbon emissions, but still presents a challenge. In this communication, we report the oriented conversion of CO 2 into value-added aromatics, especially para-xylene, in a single pass by combining core–shell structured Zn-doped H-ZSM-5 (Zn-ZSM-5@SiO 2 ) and a Cr 2 O 3 component. Through precise regulation of the acidity of Zn-ZSM-5@SiO 2 , high para-xylene selectivity (38.7 % in the total products) at a CO 2 conversion of 22.1 % was achieved. Furthermore, a CO 2 -assisted effect in the synthesis of aromatics during the tandem process has been clarified through a control experiment. The CO 2 reactant can act as a hydrogen acceptor to accelerate the dehydrogenation of alkenes, intermediates in the synthesis of aromatics, thereby increasing the driving force towards aromatics in the tandem reaction process.

AB - The oriented conversion of CO 2 into target high-value chemicals is an effective way to reduce carbon emissions, but still presents a challenge. In this communication, we report the oriented conversion of CO 2 into value-added aromatics, especially para-xylene, in a single pass by combining core–shell structured Zn-doped H-ZSM-5 (Zn-ZSM-5@SiO 2 ) and a Cr 2 O 3 component. Through precise regulation of the acidity of Zn-ZSM-5@SiO 2 , high para-xylene selectivity (38.7 % in the total products) at a CO 2 conversion of 22.1 % was achieved. Furthermore, a CO 2 -assisted effect in the synthesis of aromatics during the tandem process has been clarified through a control experiment. The CO 2 reactant can act as a hydrogen acceptor to accelerate the dehydrogenation of alkenes, intermediates in the synthesis of aromatics, thereby increasing the driving force towards aromatics in the tandem reaction process.

KW - CO conversion

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