Stability, deactivation and regeneration study of a newly developed HZSM-5 and Ni-doped HZSM-5 zeolite catalysts for ethanol-to-hydrocarbon conversion

Ifeanyi Michael Smarte Anekwe; Maggie Chetty; Lindiwe Khotseng; Sammy Lewis Kiambi; Lakesh Maharaj; Bilainu Oboirien; Yusuf Makarfi Isa

doi:10.1016/j.catcom.2023.106802

Stability, deactivation and regeneration study of a newly developed HZSM-5 and Ni-doped HZSM-5 zeolite catalysts for ethanol-to-hydrocarbon conversion

Ifeanyi Michael Smarte Anekwe, Maggie Chetty, Lindiwe Khotseng, Sammy Lewis Kiambi, Lakesh Maharaj, Bilainu Oboirien, Yusuf Makarfi Isa

Chemical Engineering Technology

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

11 Citations (Scopus)

Abstract

This work investigates the stability and regeneration of HZSM-5 and Ni/HZSM-5 catalysts in the ethanol-to-hydrocarbon conversion. The catalysts were characterised using different techniques and evaluated at 623 K and 7 h⁻¹ for 96 h TOS with two regeneration cycles. HZSM-5 showed high stability with 100% ethanol conversion, while Ni/HZSM-5 catalysts maintained 100% stability for 48 h before dropping. Regenerated catalysts were comparable to the originals in terms of product distribution, stability, and performance. HZSM-5 preferred BTX, while Ni-doped catalysts favoured C₅-C₈, C₉-C₁₂, and C₁₂+ synthesis. The regeneration process restored catalytic activity, especially for the Ni-doped catalysts, extending their life and reducing replacement costs.

Original language	English
Article number	106802
Journal	Catalysis Communications
Volume	186
DOIs	https://doi.org/10.1016/j.catcom.2023.106802
Publication status	Published - Jan 2024

Keywords

Catalyst
Ethanol
Regeneration
Stability
ZSM-5

ASJC Scopus subject areas

Catalysis
General Chemistry
Process Chemistry and Technology

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10.1016/j.catcom.2023.106802

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title = "Stability, deactivation and regeneration study of a newly developed HZSM-5 and Ni-doped HZSM-5 zeolite catalysts for ethanol-to-hydrocarbon conversion",

abstract = "This work investigates the stability and regeneration of HZSM-5 and Ni/HZSM-5 catalysts in the ethanol-to-hydrocarbon conversion. The catalysts were characterised using different techniques and evaluated at 623 K and 7 h−1 for 96 h TOS with two regeneration cycles. HZSM-5 showed high stability with 100% ethanol conversion, while Ni/HZSM-5 catalysts maintained 100% stability for 48 h before dropping. Regenerated catalysts were comparable to the originals in terms of product distribution, stability, and performance. HZSM-5 preferred BTX, while Ni-doped catalysts favoured C5-C8, C9-C12, and C12+ synthesis. The regeneration process restored catalytic activity, especially for the Ni-doped catalysts, extending their life and reducing replacement costs.",

keywords = "Catalyst, Ethanol, Regeneration, Stability, ZSM-5",

author = "Anekwe, {Ifeanyi Michael Smarte} and Maggie Chetty and Lindiwe Khotseng and Kiambi, {Sammy Lewis} and Lakesh Maharaj and Bilainu Oboirien and Isa, {Yusuf Makarfi}",

note = "Publisher Copyright: {\textcopyright} 2023",

year = "2024",

month = jan,

doi = "10.1016/j.catcom.2023.106802",

language = "English",

volume = "186",

journal = "Catalysis Communications",

issn = "1566-7367",

publisher = "Elsevier B.V.",

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T1 - Stability, deactivation and regeneration study of a newly developed HZSM-5 and Ni-doped HZSM-5 zeolite catalysts for ethanol-to-hydrocarbon conversion

AU - Anekwe, Ifeanyi Michael Smarte

AU - Chetty, Maggie

AU - Khotseng, Lindiwe

AU - Kiambi, Sammy Lewis

AU - Maharaj, Lakesh

AU - Oboirien, Bilainu

AU - Isa, Yusuf Makarfi

PY - 2024/1

Y1 - 2024/1

N2 - This work investigates the stability and regeneration of HZSM-5 and Ni/HZSM-5 catalysts in the ethanol-to-hydrocarbon conversion. The catalysts were characterised using different techniques and evaluated at 623 K and 7 h−1 for 96 h TOS with two regeneration cycles. HZSM-5 showed high stability with 100% ethanol conversion, while Ni/HZSM-5 catalysts maintained 100% stability for 48 h before dropping. Regenerated catalysts were comparable to the originals in terms of product distribution, stability, and performance. HZSM-5 preferred BTX, while Ni-doped catalysts favoured C5-C8, C9-C12, and C12+ synthesis. The regeneration process restored catalytic activity, especially for the Ni-doped catalysts, extending their life and reducing replacement costs.

AB - This work investigates the stability and regeneration of HZSM-5 and Ni/HZSM-5 catalysts in the ethanol-to-hydrocarbon conversion. The catalysts were characterised using different techniques and evaluated at 623 K and 7 h−1 for 96 h TOS with two regeneration cycles. HZSM-5 showed high stability with 100% ethanol conversion, while Ni/HZSM-5 catalysts maintained 100% stability for 48 h before dropping. Regenerated catalysts were comparable to the originals in terms of product distribution, stability, and performance. HZSM-5 preferred BTX, while Ni-doped catalysts favoured C5-C8, C9-C12, and C12+ synthesis. The regeneration process restored catalytic activity, especially for the Ni-doped catalysts, extending their life and reducing replacement costs.

KW - Catalyst

KW - Ethanol

KW - Regeneration

KW - Stability

KW - ZSM-5

UR - http://www.scopus.com/inward/record.url?scp=85179045500&partnerID=8YFLogxK

U2 - 10.1016/j.catcom.2023.106802

DO - 10.1016/j.catcom.2023.106802

M3 - Article

AN - SCOPUS:85179045500

SN - 1566-7367

VL - 186

JO - Catalysis Communications

JF - Catalysis Communications

M1 - 106802

ER -

Stability, deactivation and regeneration study of a newly developed HZSM-5 and Ni-doped HZSM-5 zeolite catalysts for ethanol-to-hydrocarbon conversion

Abstract

Keywords

ASJC Scopus subject areas

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Study Results from University of the Witwatersrand Broaden Understanding of Catalysis (Stability, deactivation and regeneration study of a newly developed HZSM-5 and Ni-doped HZSM-5 zeolite catalysts for ethanol-to-hydrocarbon conversion)

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Stability, deactivation and regeneration study of a newly developed HZSM-5 and Ni-doped HZSM-5 zeolite catalysts for ethanol-to-hydrocarbon conversion

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

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Study Results from University of the Witwatersrand Broaden Understanding of Catalysis (Stability, deactivation and regeneration study of a newly developed HZSM-5 and Ni-doped HZSM-5 zeolite catalysts for ethanol-to-hydrocarbon conversion)

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