NDLI: Influence of Ag$^{+}$ doping on the solid–solid interactions and physicochemical and catalytic properties of the chromia/magnesia system

Content Provider	Springer Nature Link
Author	El Molla, Sahar A.
Copyright Year	2014
Abstract	Ag$^{+}$-doped CrMgO$_{ x }$ samples were prepared by a mixing method and heated in air at 400 and 700 °C. The calcined samples were characterized by X-ray diffraction (XRD) analysis, infrared (IR) spectroscopy, Brunauer–Emmett–Teller (BET) specific surface area (S $_{BET}$) measurements, and H$_{2}$O$_{2}$ decomposition and 2-propanol conversion techniques. Doping the CrMgO$_{ x }$ system with Ag$^{+}$ cations resulted in destabilization of the MgO structure and stimulation of the solid–solid interactions between the system components. Doping the CrMgO$_{ x }$ system calcined at 400 °C with 0.75 mol% Ag$^{+}$ species increased the total conversion of 2-propanol by 3.4-fold at 225 °C. Treatment of the investigated system with Ag$^{+}$ species increased both its basic and redox properties. Doping the CrMgO$_{ x }$ system calcined at 700 °C with 0.75 mol% Ag$^{+}$ species increased the reaction rate constant k 30 °C * (min$^{−1}$ g$^{−1}$) of H$_{2}$O$_{2}$ decomposition by 97.3-fold. This work investigated the role of Ag$^{+}$ doping on the solid–solid interaction between the components of the investigated system as well as its redox and acid–base properties.
Starting Page	4635
Ending Page	4648
Page Count	14
File Format	PDF
ISSN	09226168
Journal	Research on Chemical Intermediates
Volume Number	41
Issue Number	7
e-ISSN	15685675
Language	English
Publisher	Springer Netherlands
Publisher Date	2014-02-23
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Composites Characterization Redox and acid–base properties Ag$^{+}$ doping Catalysis Physical Chemistry Inorganic Chemistry
Content Type	Text
Resource Type	Article
Subject	Chemistry

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