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Fabrication of NiFe layered double hydroxides using urea hydrolysis—Control of interlayer anion and investigation on their catalytic performance

Paper ID Volume ID Publish Year Pages File Format Full-Text
50034 46777 2014 5 PDF Available
Title
Fabrication of NiFe layered double hydroxides using urea hydrolysis—Control of interlayer anion and investigation on their catalytic performance
Abstract

•NiFe–NO3-LDH, Ni(HCO3)2 and NiFe–CO3-LDH shiftingly appeared in NiFe-LDH synthesis.•Reasons for this shifting were investigated by monitoring the pH value.•Catalytic performances of NiFe–NO3-LDH and NiFe–CO3-LDH were evaluated.•The different catalytic results were analyzed based on acid catalysis theory.•Catalytic mechanism of benzoin ethyl ether synthesis with NiFe-LDHs was studied.

NiFe layered double hydroxides (NiFe-LDHs) intercalated with nitrate and carbonate anion were synthesized by urea hydrolysis. The aging time and the molar ratio of NO3−/urea were varied in order to identify suitable parameters, which control the interlayer anion (nitrate or carbonate) and crystal structure of the final products. The prepared samples were applied to the one-pot synthesis of benzoin ethyl ether from benzaldehyde and ethanol. NiFe–NO3-LDH presented excellent catalytic activity, different from NiFe–CO3-LDH which showed none catalytic activity at all.

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Keywords
Urea hydrolysis; NiFeNO3-LDH; NiFeCO3-LDH; Catalysis; Benzoin ethyl ether
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Fabrication of NiFe layered double hydroxides using urea hydrolysis—Control of interlayer anion and investigation on their catalytic performance
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 50, 5 May 2014, Pages 44–48
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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Price after discount Only $4.95
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