Hydrogen production from methane reforming: Thermodynamic assessment and autothermal reactor design

Characterization and activity test of commercial Ni/Al2O3, Cu/ZnO/Al2O3 and prepared Ni–Cu/Al2O3 catalysts for hydrogen production from methane and methanol fuels

“…They achieved 99% methane conversion at a steam to carbon ratio of 1.9 and reactor temperature of 800 o C. The commercial nickel catalyst here showed a similar trend for fuel conversion and gaseous selectivity and strongly confirmed the gas product composition published by Heinzel et al [23]. Both methane tested catalysts showed better hydrogen selectivity and methane http://repository.uwc.ac.za conversion trends at temperatures above 600 o C with lower selectivity for CO than previous thermodynamic studies [21,54,61]. To the best of the author's knowledge, it was difficult to find a literature study that had tested NieCu/Al 2 O 3 on methane steam reforming [62].…”

“…This main reaction is followed by a water gas shift process where carbon monoxide is converted into hydrogen and carbon dioxide as shown in (equation (4)) [21]. The steam reforming of methane can be represented as the sum of steam reforming of methane and the water gas shift reaction as shown in (equation (6)).…”

A heterogeneous dynamic model for the simulation and optimisation of the steam methane reforming reactor

“…The optimisation scheme (28) is solved under steady-state conditions, and the optimum parameters are applied to the dynamic model, using initial data defined in Table A.1 of the Appendix. The dynamic model and the optimisation procedure were solved in the equation-based software platform gPROMS 3.4 using central finite difference formulas with 20 node points for both axial direction and pellet coordinate.…”

Thermodynamic assessment of hydrogen production and cobalt oxidation susceptibility under ethanol reforming conditions

“…Combining steam and oxygen inside a catalytic reforming reactor is a way of reducing operational costs due to energy expenses [12], avoiding deposition of carbon and the consequent deactivation of the catalyst [36,37] and augmenting total production of hydrogen [13]. The formers found that the main products from OSRE are similar to SRE (i.e., H 2 , CO, CO 2 and CH 4 ).…”

“…As mentioned by Ávila-Neto et al [12], the main advantage of this process is that it is possible to use the heat generated in the exothermic reaction as a source of energy for the endothermic reaction.…”