Preparation of Co/AlMCM41 catalysts by supercritical CO2

ASPROMONTE, SOLEDAD; SASTRE, ALVARO; ALONSO, ESTHER; BOIX, ALICIA V.; COCERO, MARÍA JOSÉ

Glasgow

Congreso; Europacat X; 2011

University of Glasgow

located into the Al-MCM-41 walls but are accessible to the reactive. An alternative approach involves the organometallic compound dissolution in supercritical carbon dioxide (scCO2). The technique which called chemical fluid deposition (CFD) using the excellent physical properties of scCO2 which are modular with small variations of P and/or T. The zero surface tension of scCO2 allows better penetrating and wetting of pores then liquid solvents. Simple removal from the substrate by depressurization avoids problems of solvent residues or pore collapse on drying. This works presents the deposition of Co nanoparticles directly onto MCM-41 and Al- MCM-41 mesoporous matrix by de dissolution of cobaltocene (CoCp2) as a precursor in carbon dioxide solution. Different characterization techniques such as SEM, TEM, XPS, SAXS and Laser Raman Spectroscopy were employed.2). The technique which called chemical fluid deposition (CFD) using the excellent physical properties of scCO2 which are modular with small variations of P and/or T. The zero surface tension of scCO2 allows better penetrating and wetting of pores then liquid solvents. Simple removal from the substrate by depressurization avoids problems of solvent residues or pore collapse on drying. This works presents the deposition of Co nanoparticles directly onto MCM-41 and Al- MCM-41 mesoporous matrix by de dissolution of cobaltocene (CoCp2) as a precursor in carbon dioxide solution. Different characterization techniques such as SEM, TEM, XPS, SAXS and Laser Raman Spectroscopy were employed.2 which are modular with small variations of P and/or T. The zero surface tension of scCO2 allows better penetrating and wetting of pores then liquid solvents. Simple removal from the substrate by depressurization avoids problems of solvent residues or pore collapse on drying. This works presents the deposition of Co nanoparticles directly onto MCM-41 and Al- MCM-41 mesoporous matrix by de dissolution of cobaltocene (CoCp2) as a precursor in carbon dioxide solution. Different characterization techniques such as SEM, TEM, XPS, SAXS and Laser Raman Spectroscopy were employed.2 allows better penetrating and wetting of pores then liquid solvents. Simple removal from the substrate by depressurization avoids problems of solvent residues or pore collapse on drying. This works presents the deposition of Co nanoparticles directly onto MCM-41 and Al- MCM-41 mesoporous matrix by de dissolution of cobaltocene (CoCp2) as a precursor in carbon dioxide solution. Different characterization techniques such as SEM, TEM, XPS, SAXS and Laser Raman Spectroscopy were employed.2) as a precursor in carbon dioxide solution. Different characterization techniques such as SEM, TEM, XPS, SAXS and Laser Raman Spectroscopy were employed.