Steam reforming of tar from raw coke oven gas over bifunctional catalysts: Reforming performance for H2 production

Abstract In this article, the bifunctional NiO/CaO@C12A7 catalysts having reforming catalytic effect and CO 2 adsorption effect were prepared with co‐precipitation method, and were used in the sorption‐enhanced steam reforming process of tar from RCOG for hydrogen production. Among six kinds of samples with different load ratios, the catalyst with the CaO:C12A7:NiO ratio of 70:15:15 showed the best catalytic performance for the steam reforming of tar to produce H 2 as well as the excellent characterization. Under the action of this catalyst, the H 2 yield obtained from the steam reforming process of 1‐methylnaphthalene (C 11 H 10 ) as the tar model compound were higher than that from the common steam reforming process, and the best H 2 yield was obtained at the reforming temperature of 750°C, the S/C ratio of 12 and the WHSV of 0.055 hr −1 , with the value of 83.9%.