Hydrogen-rich syngas was successfully produced from catalytic steam gasification of petroleum coke. This work studied the steam gasification of petroleum coke over KOH, K₂CO₃, KNO₃, CaO, Fe₂O₃, K₂CO₃–CaO and K₂CO₃–Fe₂O₃ in a pressurized fixed bed. KOH and K₂CO₃ demonstrated good catalytic activity compared with other catalysts. The carbon conversion efficiency (CCE) increased from 14.7 wt% to 61.4 wt% and 87.9 wt% after adding 10 wt% K₂CO₃ and 10 wt% KOH, respectively, and H₂ content increased from 60.9 vol% to 66.7 vol% and 64.2 vol%. The increase of gasification temperature and pressure resulted in the increase of CCE. However, raising temperature was beneficial to the increase of H₂ and CO contents, while the elevated pressure was in favor of the formation of CH₄. In addition, the K-catalytic steam gasification of petroleum coke accorded with the oxygen transfer and intermediate hybrid mechanism.

石油焦的催化蒸汽气化成功生产了富氢合成气。这项工作研究了在加压固定床中KOH，K ₂ CO ₃，KNO ₃，CaO，Fe ₂ O ₃，K ₂ CO ₃ -CaO和K ₂ CO ₃ -Fe ₂ O ₃上石油焦的蒸汽气化。与其他催化剂相比，KOH和K ₂ CO ₃表现出良好的催化活性。加入10 wt％的K ₂ CO ₃后，碳转化效率（CCE）从14.7 wt％增加到61.4 wt％和87.9 wt％KOH含量分别为10％和10％（重量），H ₂含量从60.9％（体积）增加到66.7％（体积）和64.2％（体积）。气化温度和压力的增加导致CCE的增加。然而，升高温度有利于H ₂和CO含量的增加，而升高的压力有利于CH ₄的形成。另外，石油焦的K-催化蒸汽气化符合氧转移和中间混合机理。