Search

Your search keyword '"Peurla, Markus"' showing total 7 results
Start Over "Peurla, Markus" Journal applied catalysis a: general
7 results on '"Peurla, Markus"'

5. Solvent-free “green” amidation of stearic acid for synthesis of biologically active alkylamides over iron supported heterogeneous catalysts

Author

Mäki-Arvela, Päivi, primary, Zhu, Jeanne, additional, Kumar, Narendra, additional, Eränen, Kari, additional, Aho, Atte, additional, Linden, Johan, additional, Salonen, Jarno, additional, Peurla, Markus, additional, Mazur, Anton, additional, Matveev, Vladimir, additional, and Murzin, Dmitry Yu., additional

Published
2017
Full Text
View/download PDF

7. Preparation of selective ZnCl2/alumina catalysts for methyl chloride synthesis: Influence of pH, precursor and zinc loading.

Author

Schmidt, Sabrina A., Peurla, Markus, Kumar, Narendra, Eränen, Kari, Murzin, Dmitry Yu., and Salmi, Tapio

Subjects
*ZINC chloride, *ALUMINUM catalysts, *METHYL chloride, *CHEMICAL synthesis, *PH effect, *CATALYTIC activity, *CHEMICAL precursors
Abstract

Zinc-modified alumina catalysts for methyl chloride synthesis were prepared with varying zinc loadings: from 2.4 to 21.1 wt%. The influence of the zinc loading, zinc precursor and the pH of the impregnation on the physico-chemical properties of the catalyst, and on the catalyst activity and selectivity for methyl chloride (MeCl) synthesis was investigated. The prepared catalysts were thoroughly characterized by FTIR, TEM, physisorption and EDX. On the alumina surface, both molecular and bulk zinc species are created upon zinc loading. The surface area of the catalyst decreases steadily with zinc loading. Bulk zinc species dominate on the catalyst starting at a zinc loading of 9.4 wt% and the amount of Lewis acid sites (LAS) decreases. A shift in the acid site type takes place upon zinc modification. Sites assigned to stronger LAS are eliminated while zinc-based weaker acid sites started to predominate. The shift in acidity increases the selectivity and activity of methyl chloride synthesis, which was demonstrated in a series of experiments in a laboratory-scale fixed bed reactor. [ABSTRACT FROM AUTHOR]

Published
2015
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results