Application of etched aluminum flow-through membrane as catalyst support

Hiramatsu, Hiromi; Sakurai, Makoto; Kameyama, Hideo

doi:10.1016/j.ijhydene.2016.04.232

Cited by 9 publications

(4 citation statements)

References 15 publications

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“…Catalytic activity trials were performed employing a speci c mass of catalytic Cu per methanol feed rate (W/F [g•h/mol]). In this study, MSR was carried out as a means of assessing the catalyst s activity, just as we tested Cu/ZnO catalysts in our prior research 6) . In the present work, however, we elected to use a catalyst containing Cu but not Zn, so as to limit the number of variables.…”

Section: Catalyst Preparationmentioning

confidence: 99%

“…As noted, the MSR reaction was carried out as a means of assessing the catalytic activity. The catalyst test conditions were the same as those reported previously 6) . In these trials, a methanol/water feed was introduced into the reactor, using nitrogen as the carrier gas.…”

Section: Catalyst Testingmentioning

confidence: 99%

“…This etching is characterized by the creation of rough metal surfaces. In our prior work, an anisotropic etching technique was used to produce tunnel-shaped etching pits 6) . When this technique is employed to fabricate electrode foils for electrolytic capacitors, an initial etching step forms tunnel-shaped pits that penetrate the aluminum foil, after which a second etching step increases the diameter of these pits.…”

Section: Introductionmentioning

confidence: 99%

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The Application of Etched Aluminum Wires as Catalyst Supports for Methanol Steam-Reforming

2017

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In the present work, we investigated the alternating current (AC) etching of aluminum wires with the aim of fabricating catalyst supports. This support material was found to possess a spongy surface layer that could be subsequently lled with γ-alumina by a combination of hydration and calcination. These support wires are easily fabricated at low cost, and could be mass produced continuously. The integrated structure of the catalyst produces a strong interconnection between the wire substrate and a thick catalyst layer on the wire. This work also demonstrated that the diffusion inside the catalyst layer can be controlled by varying the etched structure of the support layer. A micro-structured catalytic wall reactor concept was developed using these wires, situated parallel to one another within a tubular device, such that microchannels were present between the wires. The steam-reforming of methanol was assessed in this type of microreactor.

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Section: Catalyst Preparationmentioning

confidence: 99%

Section: Catalyst Testingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Application of Etched Aluminum Wires as Catalyst Supports for Methanol Steam-Reforming

2017

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“…When the MP structured catalyst (MPC) is lled into a gas-solid catalytic reactor, it is expected that the reactivity will improve because the reactant uid would be disarranged. Our research group is studying the process of producing hydrogen by steam reforming of methanol (SRM) (Hiramatsu et al, 2016(Hiramatsu et al, , 2017.…”

Section: Introductionmentioning

confidence: 99%

Proposal of Index for Reaction Improvement Using Structured Catalyst

Sasaki

Sakurai

2020

J. Chem. Eng. Japan

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Micro-partition (MP; supplied by Nano Cube Japan Co., Ltd.) which is commercially available as a heat sink for precision electronic parts (and generally not as a catalyst support), was adopted as a structured catalyst support. The MP was made from aluminum; it was converted into an alumite catalyst as structured catalyst and applied for a gas-solid catalytic reaction. The MP has micro ns and holes; therefore, the reactivity was expected to improve because the reactant uid would be disarranged. In this research, we linked the disarrangement of the uid with the reactivity, analyzed the ow state of the reactants in detail, and evaluated its e ect on the reactivity. Experiments and a three-dimensional simulation were carried out to investigate the relationship between the structure and reactivity. Steam reforming of methanol was adopted as the model reaction. When the structured catalyst was used, the conversion increased by 80% at 553 K compared with that of a non-characteristic structured catalyst plate, and it was implied that the improvement in reactivity was better at lower temperature. The characteristic structure of the MP, not only the ns but also the holes signi cantly improved the reactivity. An analysis of the reaction rate showed that the contact frequency between the reactants and the catalyst increased. Furthermore, an index to evaluate the promotion of mass transfer was introduced when analyzing the mass transfer around the catalyst using dynamics simulation. The simulation showed that the structure promoted the mass transfer by convection, and a similar trend as the experiments was observed; the e ect of the structured catalyst was larger at lower temperature condition. The factor of the reactivity improvement by the structured catalyst became clear from the results of the experiments and simulation.

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Proposal of the reaction environment for effective use of structured catalyst

Sasaki

Sakurai

2021

J Flow Chem

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Application of etched aluminum flow-through membrane as catalyst support

Cited by 9 publications

References 15 publications

The Application of Etched Aluminum Wires as Catalyst Supports for Methanol Steam-Reforming

The Application of Etched Aluminum Wires as Catalyst Supports for Methanol Steam-Reforming

Proposal of Index for Reaction Improvement Using Structured Catalyst

Proposal of the reaction environment for effective use of structured catalyst

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