Rhodium–Chitosan Composites Supported on Magnesium–HZSM-5 in the Conversion of Dimethyl Ether to Lower Olefins: Fid-Bau Portal

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Rhodium–Chitosan Composites Supported on Magnesium–HZSM-5 in the Conversion of Dimethyl Ether to Lower Olefins

Kolesnichenko, N. V. / Kolesnikova, E. E. / Obukhova, T. K. / Bondarenko, G. N.

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.

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Rhodium–Chitosan Composites Supported on Magnesium–HZSM-5 in the Conversion of Dimethyl Ether to Lower Olefins

Kolesnichenko, N. V. / Kolesnikova, E. E. / Obukhova, T. K. / Bondarenko, G. N.

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. / Kolesnikova, E. E. / Obukhova, T. K. / Bondarenko, G. N.

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.

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Title:

Rhodium–Chitosan Composites Supported on Magnesium–HZSM-5 in the Conversion of Dimethyl Ether to Lower Olefins

Contributors:

Kolesnichenko, N. V. (author) / Kolesnikova, E. E. (author) / Obukhova, T. K. (author) / Bondarenko, G. N. (author)

Published in:

Petroleum Chemistry ; 58 ; 1013-1018

Publication date:

2018-12-01

Size:

6 pages

ISSN:

1555-6239 , 0965-5441

DOI:

https://doi.org/10.1134/S0965544118120058

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

composite catalysts , zeolite catalysts , zeolites , dimethyl ether , lower olefins Chemistry , Industrial Chemistry/Chemical Engineering

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