A Ni/perovskite catalyst with low metal content for CO2 reforming of methane

An efficient Ni/La0.9Ca0.1AlO2.95 catalyst with low metal content (2.5 wt%) was developed for carbon dioxide (CO2) of methane. The initial CH4 conversion over this catalyst reached 71.4% at 700 ? under atmospheric pressure with a gas hourly space velocity (GHSV) of 48,000 ml/(h gcat), ranking among the highest values in the reported data. Long-term stability test demonstrates that after 20 h of reaction, this catalyst exhibited superior catalytic performance than that with 10.0 wt% of Ni. Structural characterizations reveal that tiny metal size and strong metal-support interactions were two critical structural parameters endowing exceptional reforming performance for this catalyst.

Automated summary

An efficient Ni/La0.9Ca0.1AlO2.95 catalyst with low metal content (2.5 wt%) was developed for carbon dioxide (CO2) to methane conversion. The initial CH4 conversion over this catalyst reached 71.4% at 700 ? under atmospheric pressure with a gas hourly space velocity (GHSV) of 48,000 ml/(h gcat), which is among the highest values reported. Long-term stability testing showed that after 20 hours of reaction, this catalyst demonstrated superior catalytic performance compared to a catalyst with 10.0 wt% of Ni. Structural characterizations revealed that small metal size and strong metal-support interactions were two critical structural parameters that gave this catalyst exceptional reforming performance.