Влияние фрактальной размерности массивных катализаторов на энергию активации гетерогенно-каталитического окисления СО

A. I. Trypolski; T. M. Gurnyk; P. E. Stryzhak

A. I. Trypolski L.V. Pysarzhevsky Institute of Physical Chemistry of National Academy of Sciences of Ukraine
T. M. Gurnyk L.V. Pysarzhevsky Institute of Physical Chemistry of National Academy of Sciences of Ukraine
P. E. Stryzhak L.V. Pysarzhevsky Institute of Physical Chemistry of National Academy of Sciences of Ukraine

Анотація

Effect surface of geometry of bulk catalysts on the activation energy of a heterogeneous catalytic process has been studied. A relation was found between the activation energy of reaction and the catalyst fractal dimension. The regularities obtained were illustrated, heterogeneous catalytic CO oxidation on silica and zirconia being taken as an example. An increase in surface fractal dimension of the catalyst was shown to increase the activation energy of the reaction.

Посилання

Avnir D. The fractal approach to heterogeneous chemistry. – New York: John Willey & Sons, 1989. – 345 р.

Martin J.E., Hurd A.J. Scattering from fractals // J. Appl. Cryst. – 1987.– V. 20.– P. 61 – 78.

Friesen W.I., Mikula R.J. Fractal Dimensions of Coal Particles // J. Colloid Interface Sci. – 1987. – V. 20. – P. 263 – 271.

Coster M., Chermant J.L. Fractal objects in image analysis // Int. Metall. Rev. – 1983. – V. 8. – P. 228 – 250.

Крылов О.В. Гетерогенный катализ. – М.: Академкнига, 2004. – 679 c.

Rigby S.P. Fractal theory for the compensation effect observed in a surface diffusion process studied using deuteron NMR // Langmuir. – 2002. – V. 18. – P. 1613 – 1618.

Космамбетова Г.Р., Стрижак П.Е., Мороз Э.М. и др. // Теорет. и эксперим. химия. – 2007. – Т. 43, № 2. – С. 96 – 101.

Brunauer S., Emmet P.H., Teller E. Adsorption of gases in multimolecular layers // J. Am. Chem. Soc. – 1938. – V. 60. – P. 309 – 319.

Свергун Д.И., Фейгин Л.А. Рентгеновское и нейтронное малоугловое рассеяние. – М.: Мир, 1986. – 279 с.

Неймарк А.В. Определение поверхностной фрактальной размерности по данным адсорбционного эксперимента // Журн. физ. химии. – 1990. – T. 64, № 10. – C. 2593 –2605.

Neimark A.V., Hanson M., Unger K.K Fractal analysis of the distribution of high-viscosity fluids in porous supports // J. Phys. Chem. – 1993. – V. 97. – P. 6011 – 6015.

Guinier A., Fournet G. Small-Angle Scattering of X-Ray. – N.Y.: Wiley, 1955. – 175 p.

Rothschild W.G. Fractals in chemistry. – New York: John Willey & Sons, 1998. – 235 p.

. Porod G.. General theory. Chapter 2 // Small-angle X-Ray Scattering. / O. Glatter & O Kratky, Eds. – London: Academic, 1982. – 51 p.

Голодец Г.И. // Гетерогенно-каталитические реакции с участием молекулярного кислорода. – К.: Наук. думка, 1977. – 359c.

Effect of fractal dimension of bulk catalysts on activation energy of hetero-geneous catalytic CO oxidation

Анотація

Посилання