Bi‐Reforming of Biogas for Hydrogen Production with Sulfur‐Resistant Multimetallic Catalyst

Abstract

A multimetallic sample, NiCeSnRh/Al 2 O 3 , was tested in methane reforming with a CH 4 :H 2 O:CO 2 molar ratio equal to 3:2:1. A very stable methane conversion with the time-on-stream was achieved during 20 h. Dimethyl sulfide served as a model sulfur molecule and a sulfurized sample was also tested. This achieved slightly lower conversion with a stable performance for more than 10 h and a minor but continuous decrease of its activity, after this period. The carbon dioxide conversion was always higher than the methane conversion in agreement with the lower H 2 /CO ratio observed with respect to the theoretical value, 2/1, indicating the sulfur might block the active sites for H 2 O activation. The analysis of the used catalysts showed graphitic and disordered carbon deposits.

A Review on the Use of Catalysis for Biogas Steam Reforming

“…Also, the role of multi-metallic active phases is important for obtaining specific and interesting properties, as in the case of poisoning resistance. Thus, a catalyst (NiCeSnRh/Al 2 O 3 ) was used in the bi-reforming of biogas, offering a high resistance to sulfur compounds [84].…”