3 years ago

Synthesis of Onion-Like δ-MoN Catalyst for Selective Hydrogenation

Synthesis of Onion-Like δ-MoN Catalyst for Selective Hydrogenation
Xiaodong Wen, Xuekuan Li, Jiaqian Qin, Xiaohui Yu, Yusheng Zhao, Liping Wang, Yongjun Li, Shanmin Wang, Zewei Quan, Duanwei He, Luke L. Daemen, Jianzhong Zhang, Wenpeng Han, Hui Ge
Synthesis of base metal catalysts with well-defined structure and morphology is highly desired to achieve high catalytic performance for clean energy and green chemistry applications. However, in most catalyst synthesis, it is challenging to control structural manipulation at the nanoscale, especially for transition-metal nitrides, because they are often thermodynamically unfavorable at atmospheric pressure. In this work, we report a high-pressure approach for the formation of hexagonal δ-MoN nanocrystals with a unique onion-like morphology. The onion layers are made of stacked zigzag Mo–N shells associated with the (101) crystallographic plane. Impressively, the as-synthesized δ-MoN possesses intrinsic catalytic activities that are twice higher than the traditional MoS2 for hydrodesulfurization of dibenzothiophene and more than five times higher in the selectivity to hydrogenation. The nitride is also highly active for selective hydrogenation of diverse nitroarenes to anilines at mild conditions. The enhanced catalytic properties are presumably attributed to the unique zigzag Mo–N bonding structure of the nitride. This work demonstrates that high-pressure synthesis is a viable approach to design and fabricate new and cost-effective transition-metal nitride catalysts for diverse hydrogenation applications.

Publisher URL: http://dx.doi.org/10.1021/acs.jpcc.7b05460

DOI: 10.1021/acs.jpcc.7b05460

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.