The development of improved and less costly catalysts for dehydrogenation of formic acid (HCOOH) is of general interest for renewable energy technologies involving hydrogen storage and release. Theoretical calculations reveal that ruthenium (Ru) nanoparticles supported on nitrogen-doped carbon should be appropriate catalysts for such transformations. It is predicted that nitrogen doping significantly decreases the formation of CO, but at the same time increases CO tolerance of the catalysts. To prove these hypotheses heterogeneous ruthenium catalysts supported on porous nitrogen-doped carbon (Rux/CN) with hierarchical structure were synthesized using carbon nitride (C3N4) as template and phenanthroline (Phen) as ligand. Experimental tests in HCOOH dehydrogenation revealed the optimal catalyst Ru7/CN exhibiting good thermal stability and a high turnover frequency (TOF > 1300 h-1), which is more than one order of magnitude higher than that of the commercial Ru5/C catalyst.

中文翻译：

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用于高效甲酸脱氢的耐 CO 非均相钌催化剂


开发改进的、成本更低的甲酸脱氢催化剂 （HCOOH） 对于涉及氢气储存和释放的可再生能源技术具有普遍的兴趣。理论计算表明，负载在氮掺杂碳上的钌 （Ru） 纳米颗粒应该是这种转变的合适催化剂。据预测，氮掺杂会显著减少 CO 的形成，但同时会增加催化剂的 CO 耐受性。为了证明这些假设，以氮化碳 （C3N4） 为模板，菲咯啉 （Phen） 为配体，合成了负载在具有多级结构的多孔氮掺杂碳 （Rux/CN） 上的非均相钌催化剂。HCOOH 脱氢实验测试表明，最佳催化剂 Ru7/CN 具有良好的热稳定性和高周转频率 （TOF > 1300 h-1），比商用 Ru5/C 催化剂高出一个数量级以上。