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Reactor methanol steam reforming

In this study, we developed microchannel PrOx reactor to control CO outlet concentrations less than 10 ppm from methanol steam reformer for PEMFC applications. The reactor was developed based on our previous studies on methanol steam reformer [5] and the basic technologies on microchaimel reactor including design of microchaimel plate, fabrication process and catalyst coating method were applied to the present PrOx reactor. The fabricated PrOx reactor was tested and evaluated on its CO removal performance. [Pg.654]

Lin, Y.M. and M.H. Rei, Study on the hydrogen production from methanol steam reforming in supported palladium membrane reactor, Catal. Today, 67, 77-84, 2001b. [Pg.320]

Figure 23. Methanol—steam reformers, heat exchangers, combustor, and selective oxidation reactors the body materiai was stainless steel. ... Figure 23. Methanol—steam reformers, heat exchangers, combustor, and selective oxidation reactors the body materiai was stainless steel. ...
The next step in the processor development will be to integrate the palladium alloy membrane with the methanol steam reformer reactor. The researchers anticipate that the addition of the palladium membrane will improve the reactor performance due to in-situ hydrogen removal. [Pg.546]

Table 5. Methanol Steam Reforming Reactor Performance ... Table 5. Methanol Steam Reforming Reactor Performance ...
Methanol Steam Reforming 1 [MSR 1] Electrically Heated Serpentine Channel Chip-like Reactor... [Pg.293]

Methanol Steam Reforming 3 [MSR 3] Electrically Heated Stack-like Reactor... [Pg.293]

Reuse et al. [24] applied a reactor carrying micro structured plates for methanol steam reforming over commercial copper-based low-temperature water-gas shift catalyst from Sud-Chemie. The reactor took up 20 plates made of FeCrAl alloy of size 20 mm x 20 mm x 0.2 mm. The channel size was 200 pm x 100 pm (Figure 2.5). The catalyst was conditioned by oxygen and hydrogen treatment. [Pg.295]

Table 2.3 Reaction order of fixed-bed and micro reactors determined by Reuse et al. for methanol steam reforming [24]. Table 2.3 Reaction order of fixed-bed and micro reactors determined by Reuse et al. for methanol steam reforming [24].
Methanol Steam Reforming 6 [MSR 6] Electrically Heated Screening Reactor... [Pg.298]

Ziogas et al. [28] performed catalyst screening with this reactor with catalysts coatings, which were made of various base aluminas such as corundum, boehmite and y-alumina. Testing of Cu/Cr and Cu/Mn catalysts based on the different coatings for methanol steam reforming revealed differences in activity which were ascribed... [Pg.298]

Pfeifer et al. [23] focused on Pd/PdZn/ZnO systems for methanol steam reforming. In the same reactor ([MSR 3]) the formation of a Pd/Zn alloy at higher... [Pg.300]

The [MSR 6] reactor type (see below) was applied for methanol steam reforming over Cu/Ce02/Al203 catalysts by Men et al. [34, 35], Wash coating of the alumina was performed, followed by subsequent impregnation steps with ceria and copper salt solutions. At 250 °C reaction temperature and a water/methanol molar ratio of 0.9, the copper/ceria atomic ratio was varied from 0 to 0.9, revealing the lowest conversion for pure ceria and a sharp maximum for a ratio of 0.1 (see Figure 2.13). [Pg.303]

Dudfield et al. [88] presented results generated in the scope of the Mercatox program funded by the European Community aimed at a combined methanol steam reformer/combustor with consecutive CO clean-up by PrOx. First, various catalysts were tested for the reaction as micro spheres in a test reactor which was similar to a macroscopic shell-and-tube heat exchanger (Figure 2.57). [Pg.346]

Co-current Operation of Combined Meso-scale Heat Exchangers and Reactors for Methanol Steam Reforming... [Pg.358]

Figure 2.67 Schematic and photograph of new developed reactor system for methanol steam reforming [107] (by courtesy of Motorola). Figure 2.67 Schematic and photograph of new developed reactor system for methanol steam reforming [107] (by courtesy of Motorola).
The [PrOx 3] reactor (see Section 2.6.2) and an improved second version of it carrying also a different ratio of platinum and ruthenium on the catalyst were tested separately and switched in series by Dudfield et al. [88] prior to combining it with a 20 kW methanol steam reformer. The reactors had dimensions of 46 mm height, 56 mm width and 170 mm length, which corresponds to a volume of 0.44 dm3 and a weight of 590 g. They contained 2 g of catalyst each. [Pg.363]

A reformate flow rate of 25-175 Ndm3 min-1, simulating methanol steam reformer product gases, and 2.5-17.5 Ndm3 min-1 air were fed to the reactors. The simulated reformate was composed of 68.9% H2, 0.6% CO, 22.4% C02, 6.9% H20 and 0.4% CH3OH, the last to simulate incomplete conversion. The carbon monoxide output of the single reactors and of both switched in series is shown in Figure 2.72. The CO output of the two reactors switched in series was <10 ppm and the optimum air volume split between the first and second reactors was determined as 70/30. [Pg.363]

Reuse et al. [68] combined endothermic methanol steam reforming with exothermic methanol combustion. The reactor consisted of a stack of 40 foils, 20 dedicated to each reaction (see Figure 2.77). The total length of the foils was 78 mm and their thickness was 200 pm. The foils carried 34 S-shaped channels each with a length of 30 mm, a depth of 100 pm and a width of 310 pm. A special plate in the center of the stack allowed for temperature measurements. The plates were made of FeCrAlloy and an a-alumina film 5 pm thick was generated on their surface by temperature treatment at 1000 °C for 5 h to improve the adherence of the catalyst coatings (see Section 2.10.7). [Pg.367]

The reactor was operated in the co-current mode. The feed for methanol steam reforming was composed of 37.7% methanol, 45.3% water and balance argon. The feed for methanol combustion was composed of 10% methanol, 18.9% oxygen and 71.1% nitrogen. For the steam reforming reaction side, a H20/CH30H molar ratio of 1.2 was fed to the reactor. [Pg.368]

Pfeifer, P., Schubert, K., Fichtner, M., Liauw, M. A., Emig, G., Methanol-steam reforming in microstructures difference between palladium and copper catalysts and testing of reactors for 200W fuel cell power, in Proceedings of the 6th International Conference on Microreaction Technology, IMRET 6 (11-14 March 2002), AIChE Pub. No. 164, New Orleans, 2002, 125-130. [Pg.401]


See other pages where Reactor methanol steam reforming is mentioned: [Pg.436]    [Pg.436]    [Pg.796]    [Pg.653]    [Pg.657]    [Pg.660]    [Pg.208]    [Pg.532]    [Pg.543]    [Pg.100]    [Pg.101]    [Pg.293]    [Pg.293]    [Pg.297]    [Pg.358]    [Pg.369]    [Pg.383]    [Pg.437]    [Pg.563]    [Pg.39]    [Pg.411]   


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