Ni and Cu oxide supported γ-Al2O3 packed DBD plasma reactor for CO2 activation

Ray, Debjyoti and Chawdhury, Piu and Bhargavi, K.V.S.S. and Thatikonda, Shashidhar and Lingaiah, N. and Subrahmanyam, Ch. (2021) Ni and Cu oxide supported γ-Al2O3 packed DBD plasma reactor for CO2 activation. Journal of CO2 Utilization, 44 (101400). ISSN 22129820

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Abstract

The direct activation of undiluted CO2 is carried out in a co-axial dielectric barrier discharge (DBD) reactor. The variation of the electrical discharge parameters and their influence on CO2 decomposition is investigated with the integration of 15 % MO/γ-Al2O3 (M = Ni, Cu) catalyst in the discharge zone. The electrical discharge is found to shift from the filamentary to a combination of surface and micro filamentary discharge on catalyst integration to NTP and also leads to the higher conversion of CO2 than DBD alone. The highest conversion of CO2 (15.7 %) with the energy efficiency of 1.597 mmol/kJ is achieved under CuO/γ-Al2O3 integrated NTP system, whereas the maximum of carbon balance (94.4 %) reaches with 4% CeO2 addition to CuO/Al2O3 catalyst. The oxygen vacancy of the catalyst plays a vital role in improving the performance, especially, the oxygen buffer property of CeO2 facilitates the recombination reaction and contributes to obtaining the highest carbon balance.

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IITH Creators:

IITH Creators	ORCiD
Ch, Subrahmanyam	https://orcid.org/0000-0002-2643-3854
Ray, D.	UNSPECIFIED
Chawdhury, P.	UNSPECIFIED
Bhargavi, K. V.S.S.	UNSPECIFIED

Item Type:

Article

Uncontrolled Keywords:

Carbon; Carbon dioxide; Catalysts; Cerium oxide; Conversion efficiency; Copper oxides; Dielectric devices; Dielectric materials; Electric discharges; Energy efficiency; Nickel oxide; Oxygen; Plasma applications

Subjects:

Chemistry
Chemistry > Physical chemistry
Chemistry > Inorganic chemistry

Divisions:

Department of Chemistry

Depositing User:

. LibTrainee 2021

Date Deposited:

18 Jun 2021 11:06

Last Modified:

18 Jun 2021 11:06

URI:

http://raiithold.iith.ac.in/id/eprint/7933