Design of metal-modified zeolites and mesoporous aluminosilicates and application in the synthesis of fine chemicals

A3 Bokavsnitt, kapitel i forskningsböcker


Interna författare/redaktörer


Publikationens författare: E. Salminen, S. Bridier, P. Mäki-Arvela, N. Kumar, J. Dahl, J. Roine, T. Salmi, J.-P. Mikkola
Redaktörer: Rafael Luque, Pepijn Prinsen
Förlagsort: London
Publiceringsår: 2019
Förläggare: Royal Society of Chemistry
Moderpublikationens namn: Nanoparticle Design and Characterization for Catalytic Applications in Sustainable Chemistry
Seriens namn: Catalysis series
Artikelns första sida, sidnummer: 115
Artikelns sista sida, sidnummer: 131
ISBN: 978-1-78801-490-8
eISBN: 978-1-78801-805-0


Abstrakt

Different catalyst
synthesis methods determine the physicochemical and catalytic
properties of the prepared materials. The design of suitable catalytic
active sites is important to increase the activity and to improve
selectivity for the desired product. Biomass derived terpenes and their
oxides (e.g. α-pinene oxide) are important platform building blocks for
the pharmaceutical and fine chemical industries. Transformation of
α-pinene oxide to a fragrance chemical, campholenic aldehyde, is
promoted by the Lewis acidic nature of the catalyst. The isomerization
of α-pinene oxide to campholenic aldehyde was studied over Co-modified
Beta- and Y-zeolites as well as over silica, alumina and mesoporous
H-MCM-48 catalysts. The Co-modified catalysts were characterized using
powder X-ray diffraction (PXRD), scanning electron microscopy (SEM),
elemental analysis using energy dispersive X-ray spectroscopy (EDX),
nitrogen sorption analysis to analyze the porosity, X-ray photoelectron
spectroscopy (XPS) to study the Co oxidation states, temperature
programmed desorption (TPD)-NH3 and Fourier transform infrared
spectroscopy (FTIR)-pyridine to measure the acidic properties.
Co-H-Beta-150, Co-H-Beta-25, Co-H-Y-12, Co-H-Y-80, Co-H-MCM-48 catalysts
gave rise to a high conversion (>62%) of α-pinene oxide. The
Co-H-Y-80 zeolite and the Co-MCM-48 mesoporous catalysts exhibited a 51%
and 45% yield of campholenic aldehyde, respectively.


Senast uppdaterad 2020-29-03 vid 08:30