کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
63069 47670 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Highly selective Pd/titanate nanotube catalysts for the double-bond migration reaction
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Highly selective Pd/titanate nanotube catalysts for the double-bond migration reaction
چکیده انگلیسی

Pd(II) and Pd(0) catalysts supported onto titanate nanotubes (H2Ti3O7) were prepared by an ion-exchange technique. The catalysts are characterised by narrow size distribution of metal nanoparticles on the external surface of the nanotubes. Pd(II) catalysts show high selectivity toward double-bond migration reaction versus hydrogenation in linear olefins. The catalytic activity exhibits a volcano-type dependence on the metal loading, with the maximum activity observed at ca. 8 wt%. The Pd(II) was shown to be rapidly reduced to Pd(0) by appropriate choice of solvent. Prereduced Pd(0) catalysts were found to be less active toward double-bond migration and more selective toward hydrogenation. The DBM reaction was faster in protic solvents, such as methanol or ethanol.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Catalysis - Volume 245, Issue 2, 25 January 2007, Pages 272–278
نویسندگان
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