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Steam reforming of tar from raw coke oven gas over bifunctional catalysts: Effects of preparation parameters on CO 2 adsorption performance
Author(s) -
Zhang Weidong,
Xie Huaqing,
Wang Panlei,
Li Rongquan,
Yu Zhenyu,
Yu Qingbo
Publication year - 2020
Publication title -
environmental progress and sustainable energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.495
H-Index - 66
eISSN - 1944-7450
pISSN - 1944-7442
DOI - 10.1002/ep.13506
Subject(s) - bifunctional , tar (computing) , coke , steam reforming , catalysis , calcination , raw material , chemical engineering , bifunctional catalyst , chemistry , adsorption , materials science , organic chemistry , hydrogen production , engineering , programming language , computer science
From the thermodynamic analysis of the steam reforming process of raw coke oven gas, the H 2 amplification factor after the reforming can reach the highest (over 3.5) in the temperature range between 650 and 800°C, where the bifunctional catalysts to be prepared should have the best CO 2 adsorption performances as well as the excellent reforming catalytic performances. In this article, the bifunctional NiO/CaO@C12A7 catalysts were prepared at different preparation parameters, and among them, the catalyst sample prepared at the calcination temperature of 1,000°C and the calcination time of 4 h with co‐precipitation (CP) method showed the best CO 2 adsorption capacity as well as the best characterizations. And, in the steam reforming experiments of tar component from RCOG (Raw coke oven gas), under the effect of the bifunctional catalyst, the higher H 2 yield was obtained than that over the mixture of the independent reforming catalyst and CO 2 sorbent.