Engineering Ni–Mo–S Nanoparticles for Hydrodesulfurization

• DOI: 10.1021/acs.nanolett.8b00472
• Publication Date: 2018-04-17T16:34:55Z
• Authors: Anders Bodin; Ann-Louise N. Chr...; Christian F. Elkjær; Michael Brorson; Jakob Kibsgaard; Stig Helveg; Ib Chorkendorff
• Keywords: Microreactor; Dibenzothiophene; Bimetallic strip

Nanoparticle engineering for catalytic applications requires both a synthesis technique the production of well-defined nanoparticles and measurements their performance. In this paper, we present new approach to rationally highly active Ni–Mo–S nanoparticle catalysts hydrodesulfurization (HDS), i.e., removal sulfur from fossil fuels. are synthesized by sputtering Mo75Ni25 metal target in reactive atmosphere Ar H2S followed gas aggregation sputtered material into nanoparticles. The filtered quadrupole mass filter subsequently deposited on planar substrate, such as grid electron microscopy or microreactor. By varying nanoparticles, it is demonstrated that can be tuned fullerene-like particles, flat-lying platelets, upright-oriented platelets. morphologies provide different abundances edge sites, which commonly considered catalytically important sites. Using microreactor system, assess activity HDS dibenzothiophene. show platelets twice demonstrating edges more than basal planes HDS. Furthermore, upright-standing orientation an six times higher importance site number accessibility reducing, e.g., sterical hindrance reacting molecules.