Chlorine Removal from 1,2-Dichloroethane over Ni/C Catalysts

• Autorzy: Śrębowata A. , Stefanowicz-Pięta I. , Juszczyk W. , Karpiński Z.
• Języki publikacji: EN

Abstrakty

EN

Active carbon-supported nickel catalysts prepared from nitrate and sulfate nickel salts have been investigated in the hydrodechlorination of 1,2-dichloroethane at 210–230°C. The ex-sulfate catalyst showed practically 100% selectivity towards ethene. In contrast, the ex-nitrate sample, which additionally has been subjected to a high temperature pretreatment exhibited a steadily increasing selectivity towards vinyl chloride (up to 11%), resembling the catalytic behavior of previously investigated Ni/C catalysts characterized by low metal dispersions. The X-ray diffraction study of reduced and used catalysts as well as the temperature programmed hydrogenation of deposited coke from used catalysts showed a different extent of nickel carbiding during hydrodechlorination. The presence of residual sulfur in the ex-sulfate catalyst clearly inhibits carbon incorporation into nickel.

Słowa kluczowe

EN

1,2-dichloroethane; Ni/C catalyst; hydrodechlorination; selectivity to ethene; selectivity to vinyl chloride; catalyst carbiding

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2007
• Tom: Vol. 81, nr 8
• Strony: 1521--1529
• Opis fizyczny: Bibliogr. 16 poz., rys.

Twórcy

autor

Śrębowata A.

autor

Stefanowicz-Pięta I.

autor

Juszczyk W.

autor

Karpiński Z.

• Institute of Physical Chemistry, Polish Academy of Sciences, ul. Kasprzaka 44/52, PL-01224 Warszawa, Poland

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