Exploitation Properties of Ni-Pd/Al2O3 Catalyst Supported on Ceramic Foam

Abstract

The goal of this research was to examine exploitation properties of Ni-Pd/Al2O3 catalyst supported on α-Al2O3 based foam in the dry methane reforming. The catalyst was prepared by using aerosol method. Chloride precursors for Ni and Pd were reduced by hydrogen at low temperature of 533 K, without previous calcination. The reforming experiment was performed for 3 h, with standing time of 1 h for each of the following temperatures: 873, 973 and 1023 K. Conclusions on selectivity, catalytic activity and stability were made on the basis of CO and H2 yields.

Ni-Pd-Al2O3 catalyst supported on reticulated ceramic foam for dry methane reforming

“…The following materials were used to synthesize the catalyst: NiCl 2 ×6H 2 O, PdCl 2 (MERCK, pro analysis) and α-Al 2 O 3 based foam prepared by polymer replication, as presented earlier [17]. The foam was impregnated by ultrasonically aerosolized solution of the chlorides at 473 K and dried at 473 K for 1 h. Dried, non-calcined sample with dehydrated chloride precursors was reduced at 533 K for 1.5 h (H 2 flow rate: 20 L h -1 ).…”

“…% Pd. Catalyst synthesis details and apparatus for the impregnation were as presented previously [16]. The catalyst surface was examined with a JEOL JSM-5800LV scanning electron microscope (SEM).…”

“…Previously, authors synthesized Ni-Pd/Al 2 O 3 catalyst via aerosol route [16]. The catalyst was supported on α-Al 2 O 3 based foam prepared in our earlier work [17].…”

“…Previously, authors synthesized Ni-Pd/Al 2 O 3 catalyst via aerosol route [16]. The catalyst was supported on α-Al 2 O 3 based foam prepared in our earlier work [17]. Chloride precursors for metals were almost completely reduced by hydrogen at 533 K. Utilization of chlorides instead of oxides in the production of catalysts can provide energy savings due to elimination of the calcination [16].…”

“…The catalyst was supported on α-Al 2 O 3 based foam prepared in our earlier work [17]. Chloride precursors for metals were almost completely reduced by hydrogen at 533 K. Utilization of chlorides instead of oxides in the production of catalysts can provide energy savings due to elimination of the calcination [16]. In addition, chlorides have higher reducibility than oxides obtained by calcination [18].…”