CO2 Sorption by Hydrotalcite-Like Compounds in Dry and Wet Conditions
-
Katia Gallucci
,
Francesca Micheli
Abstract
A pre-combustion removal option, coupling water–gas shift and CO2 capture is the well-known sorption-enhanced water–gas shift (SEWGS): the removal of CO2 produced by WGS reaction, shifting the thermodynamic equilibrium, enhances H2 production. Among the different CO2 sorbents, hydrotalcite-like compounds work at the required intermediate temperature (T = 200–400°C). Using low supersaturation method, three different sorbents were synthesized. Sieved fractions were impregnated with 20%w/w K2CO3 and then dried and subjected to thermal treatment. Sample characterization was performed by means of FT-IR spectroscopy, XRD analysis and TG-DTA analysis. Sample analysis was carried out after synthesis, thermal treatment (calcination) and after fixed bed reactor capture tests. Sorption and desorption tests were performed in a fixed bed microreactor, under cyclic conditions, at temperature level of T = 350°C and P = 5 bar in dry and wet condition. The amount of CO2 captured by the sorbent in each test was quantified by means of a first order with dead time flow distribution model applied to the experimental system. Sorption capacity of sorbents in dry conditions increases of 30% with respect to previous atmospheric pressure results obtained in fluidized bed. These sorbents seem to be good candidates to be used as a bi-functional sorbent-catalyst for SEWGS.
Acknowledgements
Authors are grateful to Prof. Giuliana Taglieri and MEng Ilaria Aloisi for XRD analysis, to Mrs Fabiola Ferrante for FT-IR and TG-DTA analysis. The financial support to this research by ENEA (Italian National Agency for Energy and Environment) is also acknowledged.
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©2015 by De Gruyter
Articles in the same Issue
- Frontmatter
- Reviews
- Fischer–Tropsch Synthesis in Slurry Bubble Column Reactors: Experimental Investigations and Modeling – A Review
- Computational Fluid Dynamics-Based Hydrodynamics Studies in Packed Bed Columns: Current Status and Future Directions
- Research Articles
- Optimized Modular Design and Experiment for Staggered Herringbone Chaotic Micromixer
- Effects of the Types and Addition Amounts of Sludge on the True Rheological Properties of Petroleum Coke Slurry Flowing in Pipelines
- Stabilization of Fast Pyrolysis Oil Derived from Wood through Esterification
- CO2 Sorption by Hydrotalcite-Like Compounds in Dry and Wet Conditions
- Experimental Tests with Rice Straw on a Conical Square-Based Spouted Bed Reactor
- Kinetics for an Optimized Biosynthesis of Silver Nanoparticles Using Alfalfa Extracts
- Assessing the Feasibility of Optical Probe in Phase Holdup Measurements and Flow Regime Identification
- Modeling Study of Crude Oil Enhanced Removal in a Two-Liquid Phase Partitioning Bioreactor
- Application of Deep Eutectic Solvent (DES) as a Reaction Media for the Esterification of Acrylic Acid with n-Butanol
- Transesterification of Degummed Jatropha curcas Oil Using Tri-potassium Phosphate as Base Catalyst
- Process Intensification for Production of Ethyl Lactate from Fermentation-Derived Magnesium Lactate: A Preliminary Design
- A Study on the Production of Isophthalic Acid from M-xylene under the Catalysis of Cobalt and H3PW12O40/Carbon Modified by HNO3 Solution
- Statistical Medium Optimization for the Increased Production of Recombinant Phytase in the Fed-Batch Cultivation of Pichia pastoris
- Catalytic Degradation of Pyrrole in Aqueous Solution by Cu/SBA-15
Articles in the same Issue
- Frontmatter
- Reviews
- Fischer–Tropsch Synthesis in Slurry Bubble Column Reactors: Experimental Investigations and Modeling – A Review
- Computational Fluid Dynamics-Based Hydrodynamics Studies in Packed Bed Columns: Current Status and Future Directions
- Research Articles
- Optimized Modular Design and Experiment for Staggered Herringbone Chaotic Micromixer
- Effects of the Types and Addition Amounts of Sludge on the True Rheological Properties of Petroleum Coke Slurry Flowing in Pipelines
- Stabilization of Fast Pyrolysis Oil Derived from Wood through Esterification
- CO2 Sorption by Hydrotalcite-Like Compounds in Dry and Wet Conditions
- Experimental Tests with Rice Straw on a Conical Square-Based Spouted Bed Reactor
- Kinetics for an Optimized Biosynthesis of Silver Nanoparticles Using Alfalfa Extracts
- Assessing the Feasibility of Optical Probe in Phase Holdup Measurements and Flow Regime Identification
- Modeling Study of Crude Oil Enhanced Removal in a Two-Liquid Phase Partitioning Bioreactor
- Application of Deep Eutectic Solvent (DES) as a Reaction Media for the Esterification of Acrylic Acid with n-Butanol
- Transesterification of Degummed Jatropha curcas Oil Using Tri-potassium Phosphate as Base Catalyst
- Process Intensification for Production of Ethyl Lactate from Fermentation-Derived Magnesium Lactate: A Preliminary Design
- A Study on the Production of Isophthalic Acid from M-xylene under the Catalysis of Cobalt and H3PW12O40/Carbon Modified by HNO3 Solution
- Statistical Medium Optimization for the Increased Production of Recombinant Phytase in the Fed-Batch Cultivation of Pichia pastoris
- Catalytic Degradation of Pyrrole in Aqueous Solution by Cu/SBA-15
