Catalytic activity of supported silver and potassium salts of tungstphosphoric acid in dehydration of ethanol

• Autorzy: Haber J. , Matachowski L. , Pamin K. , Napruszewska B.
• Języki publikacji: EN

Abstrakty

EN

Potassium and silver salts of tungstophosphoric acid (HPW) have been supported on silica. Two series of potassium and silver salts of tungstophosphoric acid K(x)zH(3-x)PW(12)O(40) and Ag(x)H(3-x) PW(12)O(40), where x = 1;2;3 supported on silica were prepared using incipient wetness method. In a typical synthesis, the heteropolyacid which after deposition on silica was washed with water to remove the part of heteropolyacid not bound to the support was reacted with silver or potassium salt. The vapour-phase dehydration of ethanol was employed as a test reaction. All the catalytic tests were carried out in a conventional flow type reactor, under atmospheric pressure, in the temperature range 125-500 °C. The results of these studies were used to explain the differences between the catalytic activities of heteropolysalts of potassium and silver supported on silica.

Słowa kluczowe

EN

tungstphosphoric acid; potassium; silver; ethanol; dehydration

PL

potas; srebro; etanol; dehydratacja

• Wydawca: Centrum Upowszechniania Nauki PAN
• Czasopismo: Bulletin of the Polish Academy of Sciences. Chemistry
• Rocznik: 2002
• Tom: Vol. 50, No. 2
• Strony: 189--202
• Opis fizyczny: Bibliogr. 14 poz.

Twórcy

autor

Haber J.

autor

Matachowski L.

autor

Pamin K.

autor

Napruszewska B.

• Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Kraków, Poland (Instytut Katalizy i Fizykochemii Powierzchni, PAN) tel.: [phone]; fax: [phone],