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Rhodium–Chitosan Composites Supported on Magnesium–HZSM-5 in the Conversion of Dimethyl Ether to Lower Olefins
Abstract The catalytic properties of composite catalyst systems based on zeolite HZSM-5 modified with magnesium, rhodium, and chitosan have been studied. The introduction of a rhodium–chitosan composite has a significant effect on the catalytic properties of the zeolite catalyst providing a significant increase in the activity and stability of the catalyst. Diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) has revealed that the use of chitosan leads to a decrease in the total acidity of the zeolite catalyst mostly owing to a decrease in the number of strong Brønsted acid sites. It has been shown that the pretreatment of Mg–Rh*chitosan–HZSM-5 with synthesis gas leads to an increase in the time-on-stream stability of the catalyst.
Rhodium–Chitosan Composites Supported on Magnesium–HZSM-5 in the Conversion of Dimethyl Ether to Lower Olefins
Abstract The catalytic properties of composite catalyst systems based on zeolite HZSM-5 modified with magnesium, rhodium, and chitosan have been studied. The introduction of a rhodium–chitosan composite has a significant effect on the catalytic properties of the zeolite catalyst providing a significant increase in the activity and stability of the catalyst. Diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) has revealed that the use of chitosan leads to a decrease in the total acidity of the zeolite catalyst mostly owing to a decrease in the number of strong Brønsted acid sites. It has been shown that the pretreatment of Mg–Rh*chitosan–HZSM-5 with synthesis gas leads to an increase in the time-on-stream stability of the catalyst.
Rhodium–Chitosan Composites Supported on Magnesium–HZSM-5 in the Conversion of Dimethyl Ether to Lower Olefins
Kolesnichenko, N. V. (Autor:in) / Kolesnikova, E. E. (Autor:in) / Obukhova, T. K. (Autor:in) / Bondarenko, G. N. (Autor:in)
Petroleum Chemistry ; 58 ; 1013-1018
01.12.2018
6 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Conversion of dimethyl ether into lower olefins on a La-Zr-HZSM-5/Al2O3 zeolite catalyst
| Springer Verlag | 2011