Pressure Driven Alkane Dehydrogenation by Palladium Metal. Issue 9 (15th February 2023)

• Record Type: Journal Article
• Authors: Frost, Mungo; McBride, Emma E.; Smith, Dean; Smith, Jesse S.; Glenzer, Siegfried H.
• Is Part Of: Advanced materials interfaces. Volume 10:Issue 9(2023)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2023-02-15
• Subjects: alkane -- catalysis -- dehydrogenation -- hydrogen -- olefin -- pressure; Materials science -- Periodicals; 620.11
• DOI: 10.1002/admi.202202081
• Languages: English
• ISSNs: 2196-7350

Abstract

Abstract: 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 °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, pressure is utilized as a parameter to enable novel chemical catalytic processes, and ambient‐temperature dehydrogenation of alkanes by palladium is observed at 50–100 MPa, 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. Abstract : Dehydrogenation is an important process which converts low value alkane feedstocks into more chemically versatile olefins and hydrogen. A novel dehydrogenation reaction is reported which operates via pressure cycling at ambient temperature with a palladium catalyst. It allows for full recovery of carbon‐neutral hydrogen as a co‐product and offers a more environmentally conscious way to utilize alkane resources.