Bimetallic nanoparticles as a model system for an industrial NiMo catalyst

• An in-depth understanding of the reactionmechanismis required for the further development of Mo-based catalysts for biobased feedstocks. However, fundamental studies of industrial catalysts are challenging, and simplified systems are often used without direct comparison to their industrial counterparts. Here, we report on size-selected bimetallic NiMo nanoparticles as a candidate for a model catalyst that is directly compared to the industrial system to evaluate their industrial relevance. Both the nanoparticles and industrial supported NiMo catalysts were characterized using surface- and bulk-sensitive techniques. We found that the active Ni and Mo metals in the industrial catalyst are well dispersed and well mixed on the support, and that the interaction between Ni and Mo promotes the reduction of the Mo oxide. We successfully produced 25 nm NiMo alloyed nanoparticles with a narrow size distribution. Characterization of the nanoparticles showed that they have a metallic core with a native oxide shell with a high potential for use as a model system for fundamental studies of hydrotreating catalysts for biobased feedstocks. © 2019 by the authors.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Kemiteknik -- Kemiska processer (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Chemical Engineering -- Chemical Process Engineering (hsv//eng)

NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

Nyckelord

Alloyed nanoparticles

Industrial catalysts

Lignin

Model catalyst

NiMo catalyst

Binary alloys

Feedstocks

Molybdenum oxide

Nanocatalysts

Nanoparticles

Nickel

Bimetallic nanoparticles

Fundamental studies

Hydrotreating catalysts

In-depth understanding

Industrial catalyst

Model catalysts

Narrow size distributions

Ni-Mo catalyst

Catalyst supports

Alloyed nanoparticles

Industrial catalysts

Lignin

Model catalyst

NiMo catalyst

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