Effect of support type and crystal form of support in the catalytic gasification of old corrugated containers using Fe-based catalysts

Abstract

Catalytic gasification of old corrugated containers with Fe-based catalysts is a promising way to produce renewable H2 along with the utilization of solid waste. In this study, the effect of support type and crystal form of support in Fe-based catalysts on the catalytic gasification of old corrugated containers was systematically investigated. The results show that, the introduction of Fe/γ-Al2O3, Fe/TiO2, Fe/SiO2, and Fe/ZSM5-30 promote H2 production. Among them, Fe/TiO2 has the highest catalytic activity on H2 yield (25.10 mmol/g) related to the formation of Fe2TiO5 solid-melt material. Fe/γ-Al2O3 shows the best H2 selectivity (46.34 %) and good H2 yield (24.19 mmol/g) due to good dispersity of Fe. Further, the order of catalytic effect on H2 selectivity is Fe/amorphous Al2O3 (51.46 %) > Fe/α-Al2O3 (46.98 %) > Fe/γ-Al2O3 (46.34 %). With the increase in cycle index, Fe/amorphous Al2O3 shows the best catalytic effect on H2 yield (25.56 mmol/g) after 11 indexes due to the formation of Al2FeO4. Fe/γ-Al2O3 shows the best stability on H2 selectivity (∼43 %) after 11 indexes.