Production of p-cymene from α-limonene over silica supported Pd catalysts

被引：55

作者：

Buhl, D ^{[1
]}

Roberge, DM ^{[1
]}

Hölderich, WF ^{[1
]}

机构：

[1] Univ Technol, Rhein Westfal TH Aachen, Dept Chem Technol & Heterogeneous Catalysis, D-52056 Aachen, Germany

来源：

APPLIED CATALYSIS A-GENERAL | 1999年 / 188卷 / 1-2期

关键词：

p-cymene; alpha-limonene; dehydrogenation; Pd; silica; scale-up;

D O I：

10.1016/S0926-860X(99)00219-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The conversion of the renewable and widely available feedstock a-limonene to commercially interesting p-cymene was studied in the presence of different types of silica impregnated with Pd. The research included a comparison of the catalysts, an examination of the primarily scaling up factors and results regarding the performance in a trickle-bed reactor. An interpretation of the results is based on a hydrogenation/dehydrogenation mechanism catalyzed by Pd, in which silica was used as carrier for the active metal. The results showed that pure silica impregnated with Pd yielded nearly 100% p-cymene over a total One-on-stream (TOS) of more than 500 h upon usage of pure hydrogen as carrier gas. In addition, the scale-up parameters as well as the performance in a trickle-bed reactor over the most promising catalyst were examined and they proved the exothermic character of the reaction. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：287 / 299

页数：13

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