Prospects of Fe/MCM-41 as a Catalyst for Hydrocarbon Synthesis

We report the synthesis of cylindrical nanoparticles of metallic Fe entirely included in MCM-41 pores. Their dimensions are approx.3 nm diameter and approx. 3.8 nm length. We show that a coherent analysis of the results yielded by the various techniques is essential to obtain a catalyst supported on...

Full description

Saved in:
Bibliographic Details
Main Authors: Cagnoli, Maria V, Gallegos, Norma G, Bengoa, Jose F, Alvarez, Ana M, Moreno, Sergio M J, Roig, Anna, Marchetti, Sergio G, Mercader, Roberto C
Format: Conference Proceeding
Language:English
Subjects:
ALKENES
CARBON MONOXIDE
CATALYSIS
CATALYSTS
CHEMISORPTION
CONTROLLED ATMOSPHERES
FISCHER-TROPSCH SYNTHESIS
IRON
MATERIALS SCIENCE
MOESSBAUER EFFECT
NANOSTRUCTURES
OXIDATION
PARTICLES
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
ZEOLITES
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We report the synthesis of cylindrical nanoparticles of metallic Fe entirely included in MCM-41 pores. Their dimensions are approx.3 nm diameter and approx. 3.8 nm length. We show that a coherent analysis of the results yielded by the various techniques is essential to obtain a catalyst supported on an MCM-41 matrix of 3 nm average pore diameter, which is active and selective toward olefins. The solids were characterized by low-angle x-ray diffraction, high-resolution transmission electron microscopy, high-resolution scanning transmission electron microscopy equipped with a high-angle annular dark-field, CO chemisorption, volumetric oxidation, and Mossbauer spectroscopy (in controlled atmosphere for the reduced catalysts). Catalytic results in the Fischer-Tropsch synthesis, as well as some unexpected results -like the inhomogeneous pore filling and discontinuous Fe particles- are also discussed.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.1923628