Preparation of carbide-derived carbon supported platinum catalysts

Hasse B, Gläsel JS, Kern A, Murzin DY, Etzold B (2014)

Publication Type: Journal article

Publication year: 2014

Journal

Catalysis Today Elsevier

DOI: 10.1016/j.cattod.2014.10.049

Abstract

Well defined carbon supported catalysts are of interest to deduce structure activity relationships and for catalyst optimization. Carbide-derived carbons (CDC) are high purity porous carbons with tunable pore structure. The deposition of platinum on silicon and titanium carbide based CDC was studied, using a three step process of acid treatment, ion-adsorption of platinum precursor and gas phase reduction. The influence of the steps on the carbon support properties and possibility to control the platinum loading and resulting cluster size was determined. Most crucial is the acid treatment step, where oxygen groups are introduced. At a too high degree of functionalization (non-carbon content above 30 wt%), which can result for nitric acid treatment, the pore structure is heavily attacked. For sulfuric acid treatments non-carbon contents below 15 wt% and only minor changes in the pore structure were observed. The ion-adsorption technique could be successfully transferred to the CDC supports. For medium to high degrees of functionalization (non-carbon contents above 20 wt%) the full deposition of 2.5 wt% of platinum was achieved. By the choice of platinum precursor, the pH of impregnation and the temperature of reduction the platinum cluster size could be varied from 2.5 to 5.3 nm. Thus, important knowledge how to prepare tuned Pt/C catalysts based on CDC and the ion-adsorption technique could be deduced.

Authors with CRIS profile

Benjamin Hasse Lehrstuhl für Chemische Reaktionstechnik Jan-Sebastian Gläsel Lehrstuhl für Chemische Reaktionstechnik Andreas Kern Lehrstuhl für Chemische Reaktionstechnik Bastian Etzold Professur für Katalytische Materialien

Additional Organisation(s)

Exzellenz-Cluster Engineering of Advanced Materials

Involved external institutions

Åbo Akademi University FI Finland (FI)

How to cite

APA:

Hasse, B., Gläsel, J.-S., Kern, A., Murzin, D.Y., & Etzold, B. (2014). Preparation of carbide-derived carbon supported platinum catalysts. Catalysis Today. https://dx.doi.org/10.1016/j.cattod.2014.10.049

MLA:

Hasse, Benjamin, et al. "Preparation of carbide-derived carbon supported platinum catalysts." Catalysis Today (2014).

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