Particularities of low-temperature WGSR over ceramometal and oxide catalysts: Effect of catalyst particle size

S. F. Tikhov, T. P. Minyukova, S. I. Reshetnikov, K. R. Valeev, N. V. Vernikovskaya, A. N. Salanov, S. V. Cherepanova, V. A. Sadykov

Результат исследования: Научные публикации в периодических изданияхстатья

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Аннотация

Two types of the low temperature WGS catalysts were compared: oxide Cu-Zn-Al catalyst prepared through coprecipitation procedure and ceramometal CuAlO/CuA catalyst prepared from powdered CuAl alloy. The catalysts were characterized by XRD, SEM with EDX, adsorption-desorption isotherms. Activity was measured at a pressure of 1 bar in the mixture of CO:Н2О:Н2 = 8:42:50 at a steam/gas ratio of 0.6–0.7. The catalysts were used as a small (0.14–0.25 mm)and large (3.2 × 3.2 × 5 mm)fraction. It was found that oxide catalyst possesses of a developed mesopore structure with specific surface area 122 m2/g while ceramometal catalyst has a developed macropore structure with size up to ten microns and specific surface area 15.7 m2/g. As a result, large fraction (granules)of ceramometal catalyst has twofold higher effectiveness factor due to higher internal diffusion.

Язык оригиналаанглийский
Страницы (с-по)405-411
Число страниц7
ЖурналChemical Engineering Journal
Том374
DOI
СостояниеОпубликовано - 15 окт 2019
Опубликовано для внешнего пользованияДа

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