Optimization of an experimental membrane reactor for low-temperature methane steam reforming

Modeling Fixed Bed Membrane Reactors for Hydrogen Production through Steam Reforming Reactions: A Critical Analysis

“…At the steady state, the momentum balance may simplify to Darcy’s law with the bed permeability expressed through the Kozeny–Carman equation. Works on membrane reactor modeling have adopted both approaches, with a majority resorting to the former (see [ 1 , 56 , 57 ] and other works by the same authors) rather than the latter (see [ 7 , 58 , 59 ] and other works by the same authors). Mass balance equations are reported in terms of mass units, in order to simplify the coupling with momentum equation.…”

“…Membrane reactors (MRs) have received significant attention for their potential use in decentralized hydrogen production systems, allowed by the integrated production and separation of hydrogen [ 1 , 2 , 3 ]. The reactions most commonly carried out are those of steam reforming of different carbon-based feeds such as methane [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ], methanol [ 15 , 16 , 17 , 18 , 19 , 20 , 21 ], ethanol [ 22 , 23 , 24 , 25 , 26 , 27 ], biogas [ 28 , 29 ], and glycerol [ 30 , 31 , 32 ]; water-gas shift [ 33 , 34 , 35 , 36 , 37 , 38 ]; ammonia decomposition [ 39 , 40 ]; and the dehydrogenation of alkanes [ 41 , 42 , 43 , 44 ]. In all cases the equilibrium of the reaction is shifted by removing hydrogen through a membrane.…”

Cost‐competitive methane steam reforming in a membrane reactor for H 2 production: Technical and economic evaluation with a window of a H 2 selectivity

“…Last, a simpler design is possible because of the combination of a reactor and a H 2 separator in one single unit leading to compact reactor design and cost savings in capital and operating costs compared with those of a conventional PBR. Many studies on H 2 production via the improved membrane properties for MSR in an MR have been reported as shown in Table . Although an MR has these benefits, it has also main downsides such as a trade‐off between a H 2 permeance and a H 2 selectivity as well as high costs due to the use of palladium (Pd)‐based membranes .…”

“…Many studies on H 2 production via the improved membrane properties for MSR in an MR have been reported as shown in Table 1. [12][13][14][15][16][17] Although an MR has these benefits, it has also main downsides such as a trade-off between a H 2 permeance and a H 2 selectivity as well as high costs due to the use of palladium (Pd)-based membranes. 18,19 In order to make up for the aforementioned weak points of an MR, studies on membrane performance have been done.…”

Environmentally friendly catalytic combustion of gaseous fuel to heat greenhouses

“…Conversion of CH 4 to more expensive fuels, useful chemicals, and heat have been proposed to convert it into hydrogen-rich gases on Ca-based sorbents (Wang et al 2011) and Ni-containing catalyst in membrane reactor (Kyriakides et al 2013) or flow reactor (Corbo et al 2009), olefins (Patcharavorachot et al 2014), liquefaction processing (Yoon et al 2012), methanol (Mendes et al 2014), and products of catalytic combustion (Buchneva et al 2009). Flameless catalytic combustion of natural and oil gases without formation of nitrogen oxides is one of the most promising ways for utilization of CH 4 and other alkanes to produce heat and CO 2 (Bhavsar et al 2014).…”