TY - JOUR
T1 - Cr- and Ga-Modified ZSM-5 Catalyst for the Production of Renewable BTX from Bioethanol
AU - Saini, Swati
AU - Oluokun, Tolulope
AU - Sharma, Bhawna
AU - Verma, Akash
AU - Vorontsov, Alexander
AU - Smirniotis, Panagiotis G.
AU - Singh, Raghuvir
AU - Viswanadham, Nagabhatla
AU - Kumar, Umesh
N1 - Publisher Copyright:
© 2024 Wiley-VCH GmbH.
PY - 2024/7
Y1 - 2024/7
N2 - Light aromatics (benzene, toluene, and xylene, collectively known as BTX) are essential commodity chemicals in the petrochemical industry. The present study examines the aromatization of bioethanol with Cr- and Ga-modified ZSM-5. Both Cr and Ga were incorporated by the ion-exchange method. Cr-modified ZSM-5 outperforms the Ga-modified ZSM-5 and H-ZSM-5 catalysts. Cr−H-ZSM-5 almost doubled the carbon yield of aromatics compared to H-ZSM-5 at an optimum reaction temperature of 450 °C. Cr−H-ZSM-5 produced aromatics with a yield of ~40 %. The effect of dilution in feed on BTX production is also studied. Cr−H-ZSM-5 was found to be more active than H-ZSM-5. Complete ethanol conversion was obtained with both pure and dilute bioethanol. The Bronsted-Lewis acid (BLA) pair formed after metal incorporation is responsible for dehydrogenation followed by aromatization, leading to increased aromatic production.
AB - Light aromatics (benzene, toluene, and xylene, collectively known as BTX) are essential commodity chemicals in the petrochemical industry. The present study examines the aromatization of bioethanol with Cr- and Ga-modified ZSM-5. Both Cr and Ga were incorporated by the ion-exchange method. Cr-modified ZSM-5 outperforms the Ga-modified ZSM-5 and H-ZSM-5 catalysts. Cr−H-ZSM-5 almost doubled the carbon yield of aromatics compared to H-ZSM-5 at an optimum reaction temperature of 450 °C. Cr−H-ZSM-5 produced aromatics with a yield of ~40 %. The effect of dilution in feed on BTX production is also studied. Cr−H-ZSM-5 was found to be more active than H-ZSM-5. Complete ethanol conversion was obtained with both pure and dilute bioethanol. The Bronsted-Lewis acid (BLA) pair formed after metal incorporation is responsible for dehydrogenation followed by aromatization, leading to increased aromatic production.
KW - ZSM-5
KW - aromatization
KW - bioethanol conversion
KW - heterogeneous catalysis
KW - supported catalysts
UR - http://www.scopus.com/inward/record.url?scp=85185943406&partnerID=8YFLogxK
U2 - 10.1002/cplu.202300572
DO - 10.1002/cplu.202300572
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AN - SCOPUS:85185943406
SN - 2192-6506
VL - 89
JO - ChemPlusChem
JF - ChemPlusChem
IS - 7
M1 - e202300572
ER -