Iron oxide nanoparticles on flat oxidic surfaces—Introducing a new model catalyst for Fischer–Tropsch catalysis

Stabilization of iron by manganese promoters in uniform bimetallic FeMn Fischer–Tropsch model catalysts prepared from colloidal nanoparticles

“…Although measuring catalytic activity of such systems is not easy, a planar system has the great advantage that it can be characterised by a host of surface sensitive techniques and that the active catalytic material is efficiently exposed to the ambient gas atmosphere. A typical model catalyst approach, using well-defined nanoparticles deposited on the flat silicon oxide membranes, 16 can be used to study the details of Fe catalysts used for various reactions like FTS, CO and methane oxidation reactions. [17][18][19] The aim of our work was to synthesise uniform iron manganese oxide model catalysts for clarifying the possible roles of Mn in Fe Fischer-Tropsch catalysts.…”

Cobalt Fischer–Tropsch Catalyst Regeneration: The Crucial Role of the Kirkendall Effect for Cobalt Redispersion

“…Details about the flat model support can be found elsewhere [11]. Briefly, the sample consists of a silicon wafer covered with a 15 nm thick silicon nitride membrane terminated with a 3 nm thick silicon oxide layer.…”

“…The flat model system gives excellent contrast in the TEM, and allows us to locate practically all the cobalt [11]. Furthermore, the sample can be subjected to further treatments after imaging, after which the same sample area can be imaged again.…”

Surfactant effects on the microstructures of Fe3O4 nanoparticles synthesized by microemulsion method

“…As an important iron oxide [1], magnetite (Fe 3 O 4 ) has been intensively concerned and researched in recent years owing to its special properties in chemistry and physics as well as wide application in biology, medicine and catalysis areas [2][3][4][5][6][7]. In addition, as a functional material, magnetic nanoparticles of Fe 3 O 4 is also used for recording materials, magnetic fluid materials and electronic materials, etc.…”