کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
66551 48437 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hydroformylation of 1-hexene over ultrafine cobalt nanoparticle catalysts
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Hydroformylation of 1-hexene over ultrafine cobalt nanoparticle catalysts
چکیده انگلیسی

A new method was developed to fabricate ultrafine cobalt nanoparticles with an average diameter of 2.8 nm from large precursory cobalt nanoparticles (around 20 nm). The obtained ultrafine nanoparticles have a narrow size distribution and a much higher Co/B ratio than that of precursory cobalt nanoparticles (almost 100 times higher). The 2.8 nm cobalt nanoparticles were used to catalyze hydroformylation of 1-hexene and syngas (CO: H2 = 1) at 100 °C and 2.4 MPa, resulting in an average TOF (turnover frequency) of 130 h−1. Through the mercury poisoning experiments, it was observed that the presence of Hg (0) can effectively suppress the catalytic activity of the 2.8 nm Co nanoparticle catalyst system, demonstrating that a heterogeneous catalysis mechanism was followed in the ultrafine catalyst system.

2.8 nm cobalt nanoparticles were prepared to catalyze hydroformylation of 1-hexene under low pressure and mercury poisoning test suggest a heterogeneous catalysis mechanism for the system.Figure optionsDownload high-quality image (94 K)Download as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Catalysis A: Chemical - Volume 330, Issues 1–2, 1 September 2010, Pages 94–98
نویسندگان
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