Vacuum Surface Science Meets Heterogeneous Catalysis: Dehydrogenation of a Liquid Organic Hydrogen Carrier in the Liquid State.
Vacuum Surface Science Meets Heterogeneous Catalysis: Dehydrogenation of a Liquid Organic Hydrogen Carrier in the Liquid State.
复制标题
真空表面科学遇上多相催化：液态有机氢载体的脱氢
DOI：
10.1002/cphc.201500236
复制
发表时间：
2015
期刊：
影响因子：
--
通讯作者：
F. Maier
中科院分区：
文献类型：
--
作者：
T. Matsuda;N. Taccardi;J. Schwegler;P. Wasserscheid;H.-P. Steinrück;F. Maier
采用超高真空（UHV）表面科学技术研究了液态有机氢载体在接近真实催化条件下的非均相催化脱氢反应。为此，在特高压下易挥发的过氢咔唑（PH）作为官能团与咪唑阳离子共价连接，形成不挥发的离子液体（IL）。研究了PH - IL薄膜覆盖的Pt箔、悬浮在PH - IL薄膜中的Pd颗粒以及Au作为惰性载体的PH - IL催化脱氢的温度函数。X射线光电子能谱和热解吸能谱使我们能够在技术反应温度下原位跟踪过氢咔唑到咔唑的催化转变。结果表明，Pt和Pd催化剂在使脱氢温度低于热分解临界温度方面起着重要作用。
Ultrahigh vacuum (UHV) surface science techniques are used to study the heterogeneous catalytic dehydrogenation of a liquid organic hydrogen carrier in its liquid state close to the conditions of real catalysis. For this purpose, perhydrocarbazole (PH), otherwise volatile under UHV, is covalently linked as functional group to an imidazolium cation, forming a non‐volatile ionic liquid (IL). The catalysed dehydrogenation of the PH unit as a function of temperature is investigated for a Pt foil covered by a macroscopically thick PH‐IL film and for Pd particles suspended in the PH‐IL film, and for PH‐IL on Au as inert support. X‐ray photoelectron spectroscopy and thermal desorption spectroscopy allows us to follow in situ the catalysed transition of perhydrocarbazole to carbazole at technical reaction temperatures. The data demonstrate the crucial role of the Pt and Pd catalysts in order to shift the dehydrogenation temperature below the critical temperature of thermal decomposition.
影响因子：
15
作者：
Niedermaier, Inga;Bahlmann, Matthias;Maier, Florian
通讯作者：
Maier, Florian
影响因子：
--
作者：
Inga Niedermaier;N. Taccardi;P. Wasserscheid;F. Maier;H. Steinrück
通讯作者：
Inga Niedermaier;N. Taccardi;P. Wasserscheid;F. Maier;H. Steinrück
影响因子：
3.9
作者：
Rietzler, Florian;Piermaier, Marius;Maier, Florian
通讯作者：
Maier, Florian