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Citation: Xiao Tiancun, An Lidun, Ma Jun. MECHANISM OF SULFUR POISONING ON SUPPORTED NOBLE METAL CATALYST Pd(Pt)/Al₂O₃[J]. Chinese Journal of Applied Chemistry, ;1993, 10(1): 30-33. shu

MECHANISM OF SULFUR POISONING ON SUPPORTED NOBLE METAL CATALYST Pd(Pt)/Al₂O₃

1.
Lanzhou Institute of Chemical Physics, Academia Sinica, 730000 Lanzhou

Received Date: 14 October 1991
Available Online: 15 June 1992
Fund Project:

With the aid of CO and pyridine as probe molecules, infrared spectrophotorneter was employed to characterize the industrial catalyst Pd(Pt)/Al₂O₃ used for eliminating H₂ from feed CO₂ in urea synthesis. It is concluded that the factor which directly causes the deactivation of the catalyst comes from S^2- and S₂^2-, and the last factor resulting in the deactivation are S(Ⅵ) species:SO₄^2- and Al₂O₃-SO₃-H₂O compounds.
- supported noble metal catalyst,
- sulfur poisoning,
- deactivation mechanism,
- feed gas for urea synthesis
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MECHANISM OF SULFUR POISONING ON SUPPORTED NOBLE METAL CATALYST Pd(Pt)/Al2O3

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MECHANISM OF SULFUR POISONING ON SUPPORTED NOBLE METAL CATALYST Pd(Pt)/Al₂O₃