کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
61123 | 47565 | 2014 | 8 صفحه PDF | دانلود رایگان |
• Synthesis of hydrogen peroxide from H2 and O2 was studied over Au–Pd catalyst.
• A method was developed to wash-coat the catalyst on the microchannel walls.
• Capillary microreactor makes it possible to work safely with explosive H2/O2 mixtures.
• Explosive regime in microreactor results in a higher selectivity and productivity.
Hydrogen peroxide production via direct hydrogenation of molecular oxygen offers many challenges for both catalyst and reactor development to have a high selectivity. An important advantage of using a capillary channel microreactor is the possibility to use H2/O2 concentrations that would be considered explosive in traditional reactors. Au–Pd bimetallic catalysts prepared by impregnation or two-phase synthesis procedure were deposited in a form of thin catalytic film in a capillary microchannel. This coated catalyst performed identical to a comparable slurry catalyst tested in a classical batch autoclave. Operating the microreactor within what would have been the explosive regime in a conventional reactor results in a higher selectivity and productivity.
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Journal: Journal of Catalysis - Volume 309, January 2014, Pages 325–332