Дегидрогенизация пропана молекулами СО[2]. Экспериментальное и термодинамическое рассмотрение

термодинамические анализы двуокись углерода дегидрогенизация пропана термодинамическое рассмотрение катализаторы

Влияние состава водно-этанольного растворителя на устойчивость комплексов малеиновой кислоты с ионами никеля (II), Влияние некоторых поверхностно-активных веществ на устойчивость суспензий талька, ...

Ясинский DEHYDROGENATION OF PROPANE WITH CO2 - EXPERIMENTAL AND THERMODYNAMIC CONSIDERATIONS ДЕГИДРОГЕНИЗАЦИЯ ПРОПАНА МОЛЕКУЛАМИ СО2. <...> ЭКСПЕРИМЕНТАЛЬНОЕ И ТЕРМОДИНАМИЧЕСКОЕ РАССМОТРЕНИЕ (Institute of Organic Chemistry and Technology, Cracow University of Technology) e-mail: pmichor@usk.pk.edu.pl The dehydrogenation of propane with CO2 over Cr-containing SBA-1 mesoporous material (Cr5/SBA-1) has been investigated. <...> The effect of temperature and feed gas composition on the conversion of propane and carbon dioxide as well as on the ratio of H2/CO has been carefully study. <...> It has been found that over the Cr5/SBA-1 catalyst the ratio of H2/CO rises with temperature and drops with the increase of CO2/C3H8 ratio in the feed gas. <...> The catalytic results are in agreement with the thermodynamic calculations that shows similar trend of the H2/CO ratio change for two-step pathway of propane dehydrogenation with CO2. <...> Влияние температуры и состава питающего газа на конверсию пропана и диоксида углерода, также как и на соотношение H2/CO было тщательно исследовано. <...> Key words: Dehydrogenation of propane; Thermodynamic considerations; Chromium oxide catalysts; Propene; Carbon dioxide Ключевые слова: дегидрогенизация пропана, термодинамическое рассмотрение, катализатор на основе оксида хрома, двуокись углерода INTRODUCTION Dehydrogenation of propane with CO2 has been recently considerate as an alternative technology for non-oxidative dehydrogenation of propane. <...> In the new process with CO2, propene is obtained with higher yield than in the traditional one. <...> Chromium oxide based materials are considered as ones of the most promising catalysts for dehydrogenation of light alkanes with CO2 [4-10]. <...> It could therefore be concluded that in order 82 to obtain more active chromium oxide-based catalyst for the dehydrogenation of propane dispersion of the chromium oxide species at Cr loadings as high as possible should be achieved. <...> For this reason, more attention has been dedicated recently toward mesoporous materials, which are characterized by high surface areas (2-3 times higher than traditional silica supports) as well as uniform pore size. <...> Up to now chromium oxide catalysts supported on different mesoporous materials, such as: MCM-41 [6-8], SBA-15 [9], MSU-x [10] have been investigated in the dehydrogenation of propane to propene in the presence of CO2. <...> In this paper we discussed the effect of feed gas composition <...>

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