Lehrstuhl für Anorganische Chemie II-Katalysatordesign, Universität Bayreuth, 95440 Bayreuth, Germany.
Department of Chemistry, SBA School of Science and Engineering, Lahore University of Management Sciences (LUMS), Lahore 54792, Pakistan.
Nat Commun. 2016 Oct 20;7:13201. doi: 10.1038/ncomms13201.
Large-scale energy storage and the utilization of biomass as a sustainable carbon source are global challenges of this century. The reversible storage of hydrogen covalently bound in chemical compounds is a particularly promising energy storage technology. For this, compounds that can be sustainably synthesized and that permit high-weight% hydrogen storage would be highly desirable. Herein, we report that catalytically modified lignin, an indigestible, abundantly available and hitherto barely used biomass, can be harnessed to reversibly store hydrogen. A novel reusable bimetallic catalyst has been developed, which is able to hydrogenate and dehydrogenate N-heterocycles most efficiently. Furthermore, a particular N-heterocycle has been identified that can be synthesized catalytically in one step from the main lignin hydrogenolysis product and ammonia, and in which the new bimetallic catalyst allows multiple cycles of high-weight% hydrogen storage.
大规模储能和利用生物质作为可持续碳源是本世纪的全球性挑战。将化学键合的氢可逆储存是一种特别有前途的储能技术。为此，人们非常希望能够可持续合成并允许高重量百分比储氢的化合物。在此，我们报告说，经过催化修饰的木质素，一种不可消化的、丰富的、迄今几乎未被利用的生物质，可以被用来可逆地储存氢。已经开发出一种新型可重复使用的双金属催化剂，它能够最有效地氢化和脱氢氮杂环。此外，还确定了一种特别的氮杂环，可以通过木质素主要氢解产物和氨一步催化合成，并且在这种新的双金属催化剂中可以进行多次高重量百分比储氢循环。
