Key points are not available for this paper at this time.
Abstract Dry reforming of methane (DRM) reaction is advantageous in producing syngas with a low H 2 /CO, relevant to many industries. Effect of contact time on catalytic activity and carbon deposition is studied for DRM using Ni−Al catalysts, along with the effect of metal loading, reaction temperature, and reactant partial pressure (CO 2 /CH 4 ). Maximum CH 4 conversion (58 %) and CO 2 (59 %) were achieved at a higher contact time of 4.009 kg‐cat . h/kg CH4 . A maximum of 46 % CH 4 conversion was achieved at 1023 K with a contact time of 0.134 kg‐cat . h/kg CH4 . Higher CH 4 and CO 2 conversion were achieved with an excellent H 2 and CO yield due to the RWGS reaction with increased metal (Ni) loading (10–30 wt . %). When the reactant partial pressure (CO 2 ) changed from 0.1–0.3, the CH 4 conversion increased whereas CO 2 conversion decreased. FESEM images revealed the formation of whisker‐like carbon fibers for all loadings. For the best syngas output and stability in a Ni‐based catalyst, a combination of a basic support (alumina) at a higher contact time (~4.009 kg‐cat . h/kg CH4 ) and a CO 2 /CH 4 ratio of 1–1.5 at a moderate temperature of 873 K may provide best CO 2 adsorption with minimal coking.
Nayak et al. (Mon,) studied this question.