NDLI: Dimethyl ether synthesis from CO$_{2}$ hydrogenation over hybrid catalysts: effects of preparation methods

Content Provider	SpringerLink
Author	Kornas, A. Grabowski, R. Śliwa, M. Samson, K. Ruggiero Mikołajczyk, M. Żelazny, A.
Copyright Year	2017
Abstract	Hybrid catalysts CuO/ZrO$_{2}$ + montmorillonite K10 have been tested in the direct synthesis of dimethyl ether (DME) from CO$_{2}$ + H$_{2}$ mixture. The metallic function CuO/ZrO$_{2}$ was synthesized by three methods i.e. citric method and NaOH or Na$_{2}$CO$_{3}$ co-precipitation method. The catalyst prepared with NaOH method was modified by 3 wt% of Ga, Cr, Mn and Ag. In order to determine the physicochemical properties, the following techniques were used: XRD, BET, reactive adsorption of N$_{2}$O and H$_{2}$TPR. All catalysts were tested in a high pressure fixed bed flow reactor under 40 atm pressure in the hydrogenation of CO$_{2}$. The aim of the present study is to examine the influence of the synthesis method and calcination temperature on catalytic activity of studied catalysts. It was found that the CuO/ZrO$_{2}$ prepared by citric method and calcined at 823 K is the best catalytic system. Moreover, the addition of 3 wt% Ag significantly improves selectivity to DME from 21 to 35% in comparison with undoped CuO/ZrO$_{2}$.
Starting Page	317
Ending Page	327
Page Count	11
File Format	PDF
ISSN	18785190
Journal	Reaction Kinetics and Catalysis Letters
Volume Number	121
Issue Number	1
e-ISSN	18785204
Language	English
Publisher	Springer Netherlands
Publisher Date	2017-02-10
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Copper-based catalysts Dimethyl ether CO$_{2}$ hydrogenation Catalysis Physical Chemistry Industrial Chemistry/Chemical Engineering
Content Type	Text
Resource Type	Article
Subject	Catalysis Physical and Theoretical Chemistry

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