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  Site: Index >> Technology >> Chemical Thesis >> Thesis Detail

Thesis Name: Modification effect of cerium in gas hydrogenation of acrylonitrile over Pd/Al2O3 catalysts
Usage: Ceria exhibits very interesting properties as prom
Keyword: Hydrogenation; Acrylonitrile; Cerium
Remarks: Low-loaded Pd (0.05 wt.%)/Al2O3 catalysts doped with cerium were prepared by wet impregnation method, then calcined and reduced by H2 at 773K. Selective gas phase hydrogenation of acrylonitrile over as-prepared catalysts was carried out in fixed bed reactor. The investigation indicated that the selectivity of hydrogenation of acrylonitrile to propionitrile over all the as-prepared catalysts was nearly 100%. And the addition of cerium improved the activity and stability greatly compared with Pd/Al2O3 sample studied as reference. All these may be due to the "electronic and structural effect" according to various characterizations。
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