Total combustion of propane in a catalytic microchannel combustor

Y.Men; G.Kolb; R.Zapf

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Total combustion of propane in a catalytic microchannel combustor

机译：总燃烧催化丙烷微通道燃烧室

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The combustion of propane was studied on wash-coated noble metal supported catalysts in a catalytic microchannel combustor under different reaction conditions in the temperature range 250-750 °C.Pt-based catalyst was found to be more active than Pd and Rh for the same metal loading on identical support.Pt-based catalyst showed deterioration in conversion in excess of air owing to inhibition effects of the surplus oxygen.Additionally,minor undesired selectivity towards carbon monoxide was found under stoichiometric feed ratio over Pt/Al2O3 catalyst.Palladium and rhodium catalysts were less active but exclusively selective towards carbon dioxide at stoichiometric oxygen to propane ratio and deactivation was found in a short time.Catalytic activity of Pt/Al2O3 catalyst was observed to be significantly enhanced by the transition metal oxide additives,namely tungsten and molybdenum,and the promoting role of metal oxides is tentatively discussed.At 325 °C reaction temperature and at a space velocity of 300 NL/(h gcat)full propane conversion could be achieved over Pt/MoO_x/Al2O3 catalyst in the slight excess of oxygen.Platinum catalyst promoted by MoO_x and WO,proved to be stable for over 1000 h without any detectable degradation in performance for low and high temperature applications,respectively.

机译：丙烷的燃烧进行了研究wash-coated贵金属催化剂在支持催化微通道燃烧室在不同反应条件温度范围250 - 750°C。活性比Pd和Rh同样的金属加载在相同的支持。转换超过空气的恶化由于抑制盈余的影响氧气。对一氧化碳被发现化学计量进料比率/ Pt /氧化铝催化剂。不活跃但只选择性在化学计量氧气二氧化碳丙烷比和失活在一个被发现短的时间。催化剂明显被观察到增强的过渡金属氧化物添加剂,即钨和钼,金属氧化物的促进作用是暂时的进行了讨论。空间速度300 NL / (h gcat)丙烷转换可以实现在Pt / MoO_x /氧化铝轻微的过剩的氧催化剂。催化剂促进MoO_x和我们证明稳定了1000 h没有任何检测退化在低和高的性能温度程序,分别。

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《Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers》 |2009年第1期|91-96|共6页
作者
Y.Men; G.Kolb; R.Zapf;
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作者单位

Institut fur Mikrrotechnik Mainz GmbH(IMM),Carl Zeiss Street 18-20,D-55129,Germany;

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原文格式 PDF
正文语种英语
中图分类国际共产主义运动;
关键词
Propane; metal oxides; OxidationCombustioncombustion chambersCatalystsHeterogeneous catalysisspace velocityNoble metals;

机译：丙烷、金属氧化物、OxidationCombustioncombustionchambersCatalystsHeterogeneous catalysisspacevelocityNoble金属;

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Total combustion of propane in a catalytic microchannel combustor

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