微流道泡棉甲醇蒸氣重組反應器之研究

Fabrication of metal foam reactor for production of hydrogen from steam reforming of methanol

簡調源(Tiao-Yuan Jian)

指導教授 ： 沈家傑

元智大學/工程學院/先進能源碩士學位學程/碩士(2011年)

https://doi.org/10.6838/YZU.2011.00313

摘要

本論文係研究商購氧化鈰溶膠作為黏著劑，將稀土物助劑的高活性銅基稀土催化劑塗佈於微流道銅泡棉表面，製成金屬泡棉反應器(MFR)，以甲醇蒸氣重組(SRM)反應器，進行製氫反應。在填充床反應器(PBR)測試中，催化劑Cu5Ce1Pr1Zn3的SRM活性表現已接近商購催化劑的水準，所產生的一氧化碳含量(4600 ppm)低於商購催化劑的一氧化碳含量(6600 ppm)。以銅泡棉多孔隙的高表面積與銅金屬的高熱傳導，能快速由外部供熱給洗積於泡棉表面的催化劑層，銅泡棉反應器的SRM活性優於PBR，當反應溫度為255 °C時，甲醇轉化率為95%，一氧化碳含量為15000 ppm，產生約370 ml/min的氫氣(乾式)，經由假設PEMFC 的效能為50%來評估，製得的銅泡棉反應器約可提供燃料電池33 W之電量。

關鍵字

甲醇蒸氣重組 ； 銅泡棉 ； 洗積 ； 製氫

並列摘要

A metal-foam reactor (MFR) with a volume of 8 ml was fabricated from a copper foam with 80 (Pore per inch, PPI) porosity. The active Cu/Zn catalysts promoted by bicomponent rare earths were washcoated with commercial ceria sol to form a MFR for the production of hydrogen via the steam reforming of methanol (SRM). Cu5Ce1Pr1Zn3 catalyst was tested in a packed-bed reactor (PBR). While the SRM activity of Cu5Ce1Pr1Zn3 was close to commercial catalyst, the concentration of CO is lower than commercial catalyst. Porous copper foam has high surface area and thermoconductivity, supplying external heat quickly to the catalyst layer on the foam surface. The SRM conversion in MFR was superior to that in PBR. The reformat H2-rich gas contains a 15000 ppm of CO and has a H2 production of 370 ml/min at T95 = 255 °C. The amount of H2 production from this reactor can be fed to a 33 W PEMFC based on the assumption of operational fuel cell efficiency of 50%.

並列關鍵字

Methanol steam reforming ； Copper foam ； Washcoating ； Hydrogen production

參考文獻

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