Acidity as Descriptor for Methanol Desorption in B-, Ga- and Ti-MFI Zeotypes
Journal article, 2021

The isomorphous substitution of Si with metals other than Al in zeotype frameworks allows for tuning the acidity of the zeotype and, therefore, to tailor the catalyst's properties as a function of the desired catalytic reaction. In this study, B, Ga, and Ti are incorporated in the MFI framework of silicalite samples and the following series of increasing acidity is observed: Ti-silicalite < B-silicalite < Ga-silicalite. It is also observed that the lower the acidity of the sample, the easier the methanol desorption from the zeotype surface. In the target reaction, namely the direct conversion of methane to methanol, methanol extraction is affected by the zeotype acidity. Therefore, the results shown in this study contribute to a more enriched knowledge of this reaction.

MFI

zeotype

infrared

methanol

Author

Simone Creci

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Polymer Technology

Anna Martinelli

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Anna Martinelli Group

Szilvia Vavra

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Anna Martinelli Group

Per-Anders Carlsson

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Per-Anders Carlsson Group

Magnus Skoglundh

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Polymer Technology

Catalysts

2073-4344 (ISSN)

Vol. 11 1 1-12 97

Subject Categories

Analytical Chemistry

Other Basic Medicine

Organic Chemistry

DOI

10.3390/catal11010097

More information

Latest update

2/18/2021