Structural design of self-thermal methanol steam reforming microreactor with porous combustion reaction support for hydrogen production

Abstract

To replace the traditional electric heating mode and increase methanol steam reforming reaction performance in hydrogen production, methanol catalytic combustion was proposed as heat-supply mode of methanol steam reforming microreactor. Moreover, the methanol catalytic combustion microreactor and self-thermal methanol steam reforming microreactor for hydrogen production were developed. Furthermore, catalytic combustion reaction supports with different structures were designed. It was found that the developed self-thermal methanol steam reforming microreactor had better reaction performance. Compared with A-type, the △Tmax of C-type porous reaction support was decreased by 24.4℃ under 1.3 mL/min methanol injection rate. Moreover, methanol conversation and H2 flow rate of the self-thermal methanol steam reforming microreactor with C-type porous reaction support were increased by 15.2% under 10 mL/h methanol-water mixture injection rate and 340 ℃ self-thermal temperature. Meanwhile, the CO selectivity was decreased by 4.1%. This work provides a new structural design of the self-thermal methanol steam reforming microreactor for hydrogen production for the fuel cell.

Novel Nickel Foam with Multiple Microchannels as Combustion Reaction Support for the Self-Heating Methanol Steam Reforming Microreactor

“…The methanol conversion and H 2 flow rate were used as the main indices for determining hydrogen production performance of the microreactor, which were calculated using Eqs. ( 8) and ( 9) [7,9,29,38] .…”

In Situ Reduction of a CuO/ZnO/CeO2/ZrO2 Catalyst Washcoat Supported on Al2O3 Foam Ceramic by Glycerol for Methanol Steam Reforming in a Microreactor

“…3−5 As one of the most important components of a microreactor, a catalyst support is supposed to possess high adhesive strength and excellent thermostability. 6,7 On the basis of these requirements, metal foams, 8,9 silicon, 10 and foam/porous ceramics 11−13 have been successfully used as catalyst support. Meanwhile, methanol steam reforming (MSR) is highly favored by the microreactor technology because of the high H 2 yield, low CO concentration, and moderate reaction conditions.…”

“…In recent years, a hydrogen fuel cell has become the focus of the development of a green energy resource and is considered as one of the most promising technologies in this century. , However, continuous hydrogen supply is an urgent problem to be solved for a hydrogen fuel cell. Fortunately, the microreactor technology based on the reforming of organic fuels can be integrated with the fuel cell without a significant increase in the volume and weight, which makes it possible to supply hydrogen on-site. − As one of the most important components of a microreactor, a catalyst support is supposed to possess high adhesive strength and excellent thermostability. , On the basis of these requirements, metal foams, , silicon, and foam/porous ceramics − have been successfully used as catalyst support. Meanwhile, methanol steam reforming (MSR) is highly favored by the microreactor technology because of the high H 2 yield, low CO concentration, and moderate reaction conditions .…”

Exploring the Relationship between the CO Oxidation Reaction and the Elemental Composition in Electrocatalysts with Machine Learning - a Case Study of PtRuPdRhAu High Entropy Alloys

“…5 However, platinum is highly susceptible to CO poisoning, whose traces are present in the hydrogen gas from the widely employed water gas shift reaction and from on board methanol reformers. [6][7][8] Therefore, it is still an ongoing quest to find a HOR catalyst that shows resilience towards CO poisoning. 9 A common strategy to increase the CO tolerance of platinum is to alloy it with ruthenium.…”