Oxy-dry reforming of propane over Ce-promoted Co–Ni/Al2O3 catalyst

Faisal M. Althenayan, Adesoji A. Adesina
2018 Applied Petrochemical Research  
This paper reports the production of syngas from two types of O 2 -assisted dry reforming of propane, namely oxidative (O 2 -dosed) dry reforming (ODR) and dry (CO 2 -dosed) partial oxidation (DPOX). Reaction runs were conducted over alumina-supported bimetallic Co-Ni promoted with CeO 2 at 120 kPa and 793-893 K. Ceria promotion improved the carbon deposition resilience of the Co-Ni catalyst. Physicochemical attributes were obtained from liquid N 2 adsorption, H 2 chemisorption and
more » ... rogrammed desorption runs for NH 3 , CO 2 , CH 4 and C 3 H 8 . Rate behavior under ODR, DPOX and pure dry reforming could be described consistently with empirical models that are structurally similar to Langmuir-Hinshelwood type relations. Inferences from these models allowed the postulation of the same overall reaction network for the three types of reactions albeit with variation in rate-controlling steps depending on the different product species. On the whole, DPOX seemed to be a superior option for the manufacturing of syngas for downstream olefin FT production due to reduced variability in the H 2 :CO ratio and the closeness to unity (0.72-0.95) of the exiting syngas over the range of O 2 partial pressure used. Publisher's note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
doi:10.1007/s13203-018-0214-9 fatcat:zec3dyw2ybh4zm2qamsw2lfoji