The study on the catalytic performance and characterization of perovskite catalyst (La0.9Sr0.1Cr1−2xMnxCoxO3±δ) for high temperature water–gas shift reaction with simulated coal-derived syngas

Abstract La 0.9 Sr 0.1 Cr 1−2 x Mn x Co x O 3± δ (0.1 ≤  x  ≤ 0.4) catalysts were prepared by the sol–gel method and investigated for the production of hydrogen from simulated coal-derived syngas via the water-gas shift reaction in the temperature range 400–650 °C. Catalyst characteristics were evaluated using XRD, BET, SEM–EDS and TPR. The La 0.9 Sr 0.1 Cr 1−2 x Mn x Co x O 3± δ ( x  = 0.1–0.3) catalysts shows high CO conversion of 90% at 450 °C compared to the commercial HT–WGS catalyst and maintains high activity at higher than 450 °C. Therefore, the most suitable catalyst for the WGS reaction in simulated coal-derived syngas was found to be La 0.9 Sr 0.1 Cr 0.8 Mn 0.1 Co 0.1 O 3± δ .