TY - JOUR

T1 - Syngas production via partial oxidation of dimethyl ether over Rh/Ce0.75Zr0.25O2 catalyst and its application for SOFC feeding

AU - Badmaev, S. D.

AU - Akhmetov, N. O.

AU - Belyaev, V. D.

AU - Kulikov, A. V.

AU - Pechenkin, A. A.

AU - Potemkin, D. I.

AU - Konishcheva, M. V.

AU - Rogozhnikov, V. N.

AU - Snytnikov, P. V.

AU - Sobyanin, V. A.

N1 - Publisher Copyright: © 2020 Hydrogen Energy Publications LLC Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/10/2

Y1 - 2020/10/2

N2 - Dimethyl ether (DME) partial oxidation (PO) was studied over 1 wt% Rh/Ce0.75Zr0.25O2 catalyst at temperatures 300–700 °C, O2:C molar ratio of 0.25 and GHSV 10000 h−1. The catalyst was active and stable under reaction conditions. Complete conversion of DME was reached at 500 °C, but equilibrium product distribution was observed only at T ≥ 650 °C. High concentration of CH4 and low contents of CO and H2 were observed at 500–625 °C 75 cm3 of composite catalyst 0.24 wt% Rh/Ce0.75Zr0.25O2/Al2O3/FeCrAl showed excellent catalytic performance in DME PO at O2:C molar ratio of 0.29 and inlet temperature 840 °C which corresponded to carbon-free region. 100% DME conversion was reached at GHSV of 45,000 h−1. The produced syngas contained (vol. %): 33.4 H2, 34.8 N2, 22.7 CO, 3.6 CO2 and 1.6 CH4. Composite catalyst demonstrated the specific syngas productivity (based on CO and H2) in DME PO of 42.8 m3·Lcat −1·h−1 (STP) and the syngas productivity of more than 3 m3·h−1 (STP) that was sufficient for 3 kWe SOFC feeding. PO of natural gas and liquified petroleum gas can be carried out over the same catalyst with similar productivity, realizing the concept of multifuel hydrogen generation. The syngas composition obtained via DME PO was shown to be sufficient for YSZ-based SOFC feeding.

AB - Dimethyl ether (DME) partial oxidation (PO) was studied over 1 wt% Rh/Ce0.75Zr0.25O2 catalyst at temperatures 300–700 °C, O2:C molar ratio of 0.25 and GHSV 10000 h−1. The catalyst was active and stable under reaction conditions. Complete conversion of DME was reached at 500 °C, but equilibrium product distribution was observed only at T ≥ 650 °C. High concentration of CH4 and low contents of CO and H2 were observed at 500–625 °C 75 cm3 of composite catalyst 0.24 wt% Rh/Ce0.75Zr0.25O2/Al2O3/FeCrAl showed excellent catalytic performance in DME PO at O2:C molar ratio of 0.29 and inlet temperature 840 °C which corresponded to carbon-free region. 100% DME conversion was reached at GHSV of 45,000 h−1. The produced syngas contained (vol. %): 33.4 H2, 34.8 N2, 22.7 CO, 3.6 CO2 and 1.6 CH4. Composite catalyst demonstrated the specific syngas productivity (based on CO and H2) in DME PO of 42.8 m3·Lcat −1·h−1 (STP) and the syngas productivity of more than 3 m3·h−1 (STP) that was sufficient for 3 kWe SOFC feeding. PO of natural gas and liquified petroleum gas can be carried out over the same catalyst with similar productivity, realizing the concept of multifuel hydrogen generation. The syngas composition obtained via DME PO was shown to be sufficient for YSZ-based SOFC feeding.

KW - Dimethyl ether

KW - Hydrogen energy

KW - Liquefied petroleum gas

KW - Methane

KW - Partial oxidation

KW - SOFC

KW - SYSTEM

KW - ACID

KW - CONVERSION

KW - STEAM

KW - FUEL-CELLS

KW - CHALLENGES

KW - REACTOR

KW - DIESEL

KW - SOLAR

KW - HYDROGEN-PRODUCTION

UR - http://www.scopus.com/inward/record.url?scp=85079558014&partnerID=8YFLogxK

U2 - 10.1016/j.ijhydene.2020.01.101

DO - 10.1016/j.ijhydene.2020.01.101

M3 - Article

AN - SCOPUS:85079558014

VL - 45

SP - 26188

EP - 26196

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

SN - 0360-3199

IS - 49

ER -