论文标题
环境温度压力驱动的烷烃通过钯金属脱氢作用
Ambient temperature pressure driven alkane dehydrogenation by palladium metal
论文作者
论文摘要
烷烃的脱氢作用对于满足烯烃的全球需求而越来越重要，并提供了作为副产品的潜在碳中性氢的来源。目前，商业脱氢过程发生在高温下（500-900 $^\ Circ $ c），这是能量密集型的，导致催化剂的侧面反应和快速焦化。此外，经常燃烧产生的氢以保持温度并抑制背部反应。在这里，我们证明了一个参数，以实现新型的化学催化过程，并证明钯在50-100 MPa压力下通过钯的环境 - 温度脱氢，氢气和烯烃在减压后均回收。该反应遵循与当前商业高温低压脱氢过程的根本不同的路径，钯催化剂可逆地形成氢化物中间体。
Dehydrogenation of alkanes is of increasing importance in fulfilling global demand for olefins and offers a potential source of carbon-neutral hydrogen as a co-product. Currently commercial dehydrogenation processes occur at high-temperatures (500-900$^\circ$C) which is energy intensive and results in side reactions and rapid coking of the catalysts. In addition the hydrogen produced is often burned to maintain temperature and to inhibit the back reaction. Here we demonstrate pressure as a parameter to enable novel chemical catalytic processes and demonstrate ambient-temperature dehydrogenation of alkanes by palladium at 50-100 MPa pressures, with both hydrogen gas and olefins recovered on decompression. This reaction follows a fundamentally different path to current commercial high-temperature low-pressure dehydrogenation processes with the palladium catalyst reversibly forming a hydride intermediate.
