Effect of metal dispersion on CO hydrogenation over Pd/HZSM-5 catalysts |
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| Authors: | Jong-Ki Jeon Son-Ki Ihm |
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| Affiliation: | (1) Department of Chemical Engineering, Korea Advanced Institute of Science and Technology, 373-1 Kusong-dong, Yusung-gu, 305-701 Taejon, Korea |
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| Abstract: | Pd/HZSM-5 catalysts prepared by ion-exchange method using Pd(NH3)
4
2+
were calcined and reduced at different temperatures to provide different metal dispersions. The effect of Pd dispersion on CO adsorption characteristics and acidity were observed through FT-IR study. Methanol and dimethyl ether were the main products in CO hydrogénation over Pd/HZSM-5 catalyst with small Pd particles on which CO was weakly adsorbed, while the selectivity to methane increased with metal sizes. |
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| Keywords: | carbon monoxide hydrogenation palladium HZSM-5 dispersion selectivity (oxygenate) catalyst characterization (IR) |
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