文献类型：期刊文献

英文题名：Pore Expansion of N-Doped Carbon as Support of Pd Catalyst for Accelerated Formic Acid Dehydrogenation

作者：Li, Huiming[1];Zhang, Junhuan[1];Gui, Yao[1];Li, Jianfa[1]

机构：[1]Shaoxing Univ, Coll Chem & Chem Engn, Shaoxing 312000, Zhejiang, Peoples R China

年份：2024

卷号：38

期号：24

起止页码：23836

外文期刊名：ENERGY & FUELS

收录：SCI-EXPANDED(收录号：WOS:001366370900001)、、EI(收录号：20244917476220)、Scopus(收录号：2-s2.0-85210731989)、WOS

基金：This work was supported by the National Natural Science Foundation of China (No. 21777103).

语种：英文

外文关键词：Carbon capture - Carbon capture and storage - Carbon cycle - Carbon sequestration - Dehydrogenation - Doping (additives) - Hydrogen storage - Mesopores

外文摘要：Formic acid offers a fascinating medium for hydrogen storage and transport, and Pd@carbon catalysts are the most common catalysts for catalyzing the release of hydrogen from formic acid (dehydrogenation). Biomass-derived carbon is advantageous over other supports in view of cost, sustainability, and easy modification. Nitrogen (N) doping of carbon can improve the activity of a carbon-supported Pd catalyst, but the concurrently deteriorated porosity of carbon inhibits it from reaching the full potential. Herein, the pores of N-doped wood-derived carbon were expanded by a novel alkali/air coactivation method so as to enhance further the activity of Pd@carbon catalyst for formic acid dehydrogenation. After investigation of the influence of N doping and coactivation conditions, the N-doped porous carbon (NPC) with developed porosity (SABET = 956 m2g-1, and SAmeso = 295 m2g-1) was produced at optimized conditions. The Pd@NPC catalyst with well-distributed ultrafine Pd nanoparticles (0.4-1.4 nm) was synthesized by taking advantage of both N doping and expanded pores (especially mesopores) of NPC. Subsequently, a turnover frequency of 446 h-1 was obtained using this Pd@NPC catalyst for additive-free formic acid dehydrogenation at 303 K. Thus, formic acid dehydrogenation was accelerated by expanding the pores of N-doped biomass-derived carbon that acted as a support of Pd catalysts.