کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
42269 45918 2009 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Water soluble laurate-stabilized rhodium(0) nanoclusters catalyst with unprecedented catalytic lifetime in the hydrolytic dehydrogenation of ammonia-borane
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Water soluble laurate-stabilized rhodium(0) nanoclusters catalyst with unprecedented catalytic lifetime in the hydrolytic dehydrogenation of ammonia-borane
چکیده انگلیسی

Herein we report, for the first time, the preparation and characterization of water soluble rhodium(0) nanoclusters stabilized by laurate (dodecanoate) anion and their catalytic activity in the hydrolysis of ammonia-borane. The water soluble laurate-stabilized rhodium(0) nanoclusters were prepared from the reduction of rhodium(III) chloride by dimethylamine-borane in solution containing sodium laurate at room temperature. The water soluble laurate-stabilized rhodium(0) nanoclusters in average size of 5.2 ± 2.7 nm could be isolated from the reaction solution and characterized by using UV–vis, TEM, XPS, XRD and FTIR spectroscopic methods. Catalytic activity of rhodium(0) nanoclusters was tested in the hydrolysis of ammonia-borane. They show exceptional catalytic activity and unprecedented catalytic lifetime in this reaction. They provide a TOF value of 200 mol H2/mol Rh min and 80,000 turnovers in the hydrolysis of ammonia-borane in air at 25.0 ± 0.1 °C.

Water soluble laurate-stabilized rhodium(0) nanoclusters can easily be prepared from the reduction of rhodium(III) chloride by dimethylamine-borane in solution containing laurate ions and exhibit superb catalytic activity and lifetime as heterogeneous catalyst in the hydrolysis of ammonia-borane (TOF = 200 mol H2/mol Rh min and TTO = 80,000 mol H2/mol Rh).Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis A: General - Volume 369, Issues 1–2, 15 November 2009, Pages 53–59
نویسندگان
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