Reaction Engineering at Birmingham Joe Wood, Bushra Al-Duri, Suzanne Al-Samaq C-Cycle Project: Capture of Carbon Dioxide and Reforming to Make Hydrogen

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Reaction Engineering at BirminghamJoe Wood,
Bushra Al-Duri, Suzanne Al-SamaqC-Cycle Project
Capture of Carbon Dioxide and Reforming to Make
Hydrogen

• Carbon dioxide capture using hydrotalcite
  adsorbent/reforming catalyst

CO2 capture
Catalysis/activation
Syngas

• Hydroxycarbonate of Mg and Al
• Brucite (Mg(OH)2) layers
• Mg2 ions substituted by other metals
• (CO3)2- ions in the interlayer

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Hydrotalcite Preparation Procedure
Ni(NO3)2 Mg(NO3)2 Al(NO3)3
K2CO3 NaOH
Add Dropwise Vigorous stirring 70oC
Hydrotalcite Precipitates
Filter Dry (80oC, 12 hrs)
Hydrotalcite Crystals
Finished catalyst
Calcine (600oC, 8hrs)
Mixed Oxides
Reduce 10 H2/N2 (600oC, 1hr)
Sample Surface area m2g-1
Ni/Mg/Al3 powder 186.7
Ni/Mg/Al3/Fe3 powder 156.4
SEM of hydrotalcite synthesised at pH 8.5
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Dry Reforming of Methane Tests
Reaction Conditions 6 g catalyst 25 ml/min flow
CO2, 25 ml/min flow CH4 Reaction at 750 C, 1 bar
Dry Reforming Reactor (housed in cabinet funded
by Science City)
Catalyst-A Ni2/Mg2/Al3-(0.330.330.33) Catal
yst-B Ni2/Mg2/Al3/Fe3-(0.30.30.290.1) Cat
alyst-C Ni2/Co2/Al3-(0.330.330.33) Catalyst
-D Ni2/Co2/Al3/Fe3/ (0.330.330.290.1)
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Results of Dry Reforming Tests
Catalyst still Active after 400 mins
Catalyst-B Ni2/Mg2/Al3/Fe3-(0.30.30.290.1
) gives highest conversion