Highly Selective Transformation of CO2 + H2 into Para-Xylene via a Bifunctional Catalyst Composed of Cr2O3 and Twin-Structured ZSM-5 Zeolite
Abstract
:1. Introduction
2. Results
2.1. Physicochemical Property of the Twin-Structured Zeolite
2.2. The Catalytic Performance of PX Synthesis from CO2 Hydrogenation
3. Materials and Methods
3.1. Materials and Chemicals
3.2. Catalyst Preparation
3.2.1. Synthesis of Cr2O3/C Catalyst
3.2.2. Synthesis of H-ZSM-5T
3.2.3. Synthesis of Cu-ZSM-5T
3.2.4. Synthesis of Cu-ZSM-5T@SiO2
3.3. Catalyst Characterization
3.4. Catalytic Activity Evaluation
4. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Catalyst | SBET (m2/g) | Smicro (m2/g) | Smeso (m2/g) | Average Pore Diameter (nm) |
---|---|---|---|---|
H-ZSM-5T | 376 | 144 | 232 | 1.95 |
Cu-ZSM-5T | 372 | 129 | 242 | 1.96 |
Cu-ZSM-5T@SiO2 | 363 | 78 | 285 | 1.92 |
Catalysts | CO2 Conv. (%) | CO Sel. (%) | Hydrocarbon Distribution (%) | ||||
---|---|---|---|---|---|---|---|
CH4 | C20-C40 | C2=-C4= | CH3OH | Aromatics | |||
Cr2O3/C&H-ZSM-5T | 16.5 | 72.1 | 2.3 | 9.5 | 9.1 | 0.4 | 78.7 |
Cr2O3/C&Cu-ZSM-5T | 19.2 | 73.2 | 3.6 | 8.5 | 7.2 | 0.3 | 80.4 |
Cr2O3/C&Cu-ZSM-5T@SiO2 | 18.4 | 74.1 | 1.7 | 9.1 | 6.6 | 0.3 | 82.3 |
Catalysts | Selectivity of Aromatics (%) a | STY of PX (gCH2 h−1 kgcat−1) | ||||||
---|---|---|---|---|---|---|---|---|
B | T | E | PX | OX | MX | A(C9+) | ||
Cr2O3/C&H-ZSM-5T | 0.5 | 5.0 | 1.4 | 28.7 | 6.3 | 1.3 | 35.5 | 2.5 |
Cr2O3/C&Cu-ZSM-5T | 0.7 | 4.5 | 0.4 | 27.4 | 6.8 | 1.5 | 39.1 | 2.6 |
Cr2O3/C&Cu-ZSM-5T@SiO2 | 0.9 | 6.6 | 1.8 | 33.8 | 7.5 | 1.2 | 30.5 | 3.0 |
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Lin, S.; He, R.; Wang, W.; Wang, Y.; Gu, Y.; Liu, Q.; Wu, M. Highly Selective Transformation of CO2 + H2 into Para-Xylene via a Bifunctional Catalyst Composed of Cr2O3 and Twin-Structured ZSM-5 Zeolite. Catalysts 2023, 13, 1080. https://doi.org/10.3390/catal13071080
Lin S, He R, Wang W, Wang Y, Gu Y, Liu Q, Wu M. Highly Selective Transformation of CO2 + H2 into Para-Xylene via a Bifunctional Catalyst Composed of Cr2O3 and Twin-Structured ZSM-5 Zeolite. Catalysts. 2023; 13(7):1080. https://doi.org/10.3390/catal13071080
Chicago/Turabian StyleLin, Shiyuan, Ruosong He, Wenhang Wang, Yang Wang, Yongqiang Gu, Qiang Liu, and Mingbo Wu. 2023. "Highly Selective Transformation of CO2 + H2 into Para-Xylene via a Bifunctional Catalyst Composed of Cr2O3 and Twin-Structured ZSM-5 Zeolite" Catalysts 13, no. 7: 1080. https://doi.org/10.3390/catal13071080