DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Control of the Structural Charge Distribution and Hydration State upon Intercalation of CO2 into Expansive Clay Interlayers

Journal Article · · Journal of Physical Chemistry Letters

Numerous experimental investigations indicated that expansive clays such as montmorillonite can intercalate CO2 preferentially into their interlayers and therefore potentially act as a material for CO2 separation, capture, and storage. However, an understanding of the energy–structure relationship during the intercalation of CO2 into clay interlayers remains elusive. Here, in this study, we use metadynamics molecular dynamics simulations to elucidate the energy landscape associated with CO2 intercalation. Our free energy calculations indicate that CO2 favorably partitions into nanoconfined water in clay interlayers from a gas phase, leading to an increase in the CO2/H2O ratio in clay interlayers as compared to that in bulk water. CO2 molecules prefer to be located at the centers of charge-neutral hydrophobic siloxane rings, whereas interlayer spaces close to structural charges tend to avoid CO2 intercalation. The structural charge distribution significantly affects the amount of CO2 intercalated in the interlayers. These results provide a mechanistic understanding of CO2 intercalation in clays for CO2 separation, capture, and storage.

Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
NA0003525
OSTI ID:
2311578
Report Number(s):
SAND--2023-03195J
Journal Information:
Journal of Physical Chemistry Letters, Journal Name: Journal of Physical Chemistry Letters Journal Issue: 11 Vol. 14; ISSN 1948-7185
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

References (65)

Carbon Dioxide in Montmorillonite Clay Hydrates: Thermodynamics, Structure, and Transport from Molecular Simulation journal August 2010
Structure, dynamics and vibrational spectrum of supercritical CO2/H2O mixtures from ab initio molecular dynamics as a function of water cluster formation journal January 2010
Water and ions in clays: Unraveling the interlayer/micropore exchange using molecular dynamics journal November 2007
In situ XRD study of Ca2+ saturated montmorillonite (STX-1) exposed to anhydrous and wet supercritical carbon dioxide journal January 2012
Force field comparison and thermodynamic property calculation of supercritical CO2 and CH4 using molecular dynamics simulations journal April 2014
Microstructural Response of Variably Hydrated Ca-rich Montmorillonite to Supercritical CO 2 journal June 2014
Solubility of Gases in Water Confined in Nanoporous Materials: ZSM-5, MCM-41, and MIL-100 journal September 2015
Revealing Transition States during the Hydration of Clay Minerals journal June 2019
Transport Mechanism of Guest Methane in Water-Filled Nanopores journal May 2017
In Situ Study of CO 2 and H 2 O Partitioning between Na–Montmorillonite and Variably Wet Supercritical Carbon Dioxide journal May 2014
Molecular Dynamics Simulations of Turbostratic Dry and Hydrated Montmorillonite with Intercalated Carbon Dioxide journal May 2014
Fast Advective Water Flow Through Nanochannels in Clay Interlayers: Implications for Moisture Transport in Soils and Unconventional Oil/Gas Production journal November 2020
Molecular Models of Hydroxide, Oxyhydroxide, and Clay Phases and the Development of a General Force Field journal January 2004
Molecular Origin of Wettability Alteration of Subsurface Porous Media upon Gas Pressure Variations journal August 2021
Effect of exchangeable cation on the swelling property of 2:1 dioctahedral smectite—A periodic first principle study journal February 2004
Hydrophobic Nanoconfinement Enhances CO2 Conversion to H2CO3 journal February 2023
Intrinsic hydrophobicity of smectite basal surfaces quantitatively probed by molecular dynamics simulations journal April 2020
Investigation of smectite hydration properties by modeling experimental X-ray diffraction patterns: Part I. Montmorillonite hydration properties journal August 2005
Molecular Simulations on the Structure and Dynamics of Water–Methane Fluids between Na-Montmorillonite Clay Surfaces at Elevated Temperature and Pressure journal June 2013
Control of Structural Hydrophobicity and Cation Solvation on Interlayer Water Transport during Clay Dehydration journal March 2022
Direct Capture of CO2 from Ambient Air journal August 2016
Advances in Clayff Molecular Simulation of Layered and Nanoporous Materials and Their Aqueous Interfaces journal July 2021
Escaping free-energy minima journal September 2002
CO 2 solvation free energy using quasi-chemical theory journal June 2011
X-ray Diffraction Study of K- and Ca-Exchanged Montmorillonites in CO 2 Atmospheres journal April 2012
Molecular Dynamics Simulations of Carbon Dioxide Intercalation in Hydrated Na-Montmorillonite journal May 2013
Strategic Design of Clay‐Based Multifunctional Materials: From Natural Minerals to Nanostructured Membranes journal January 2019
Gas Solubility in Hydrophobic Confinement journal December 2005
Molecular Dynamics Simulation of Hydration and Swelling of Mixed-Layer Clays in the Presence of Carbon Dioxide journal January 2019
Interfacial Reactivity and Speciation Emerging from Na-Montmorillonite Interactions with Water and Formic Acid at 200 °C: Insights from Reactive Molecular Dynamics Simulations, Infrared Spectroscopy, and X-ray Scattering Measurements journal April 2021
Molecular Dynamics Simulations of Carbon Dioxide, Methane, and Their Mixture in Montmorillonite Clay Hydrates journal June 2016
Molecular Models for the Intercalation of Methane Hydrate Complexes in Montmorillonite Clay journal September 2004
Molecular Level Investigation of CH 4 and CO 2 Adsorption in Hydrated Calcium–Montmorillonite journal November 2017
Monte Carlo and molecular dynamics simulations of methane in potassium montmorillonite clay hydrates at elevated pressures and temperatures journal February 2005
Structural Arrangements of Isomorphic Substitutions in Smectites: Molecular Simulation of the Swelling Properties, Interlayer Structure, and Dynamics of Hydrated Cs–Montmorillonite Revisited with New Clay Models journal June 2014
Evidence of Facilitated Transport in Crowded Nanopores journal January 2020
Confined Water Determines Transport Properties of Guest Molecules in Narrow Pores journal July 2016
Molecular Understanding of CO 2 and H 2 O in a Montmorillonite Clay Interlayer under CO 2 Geological Sequestration Conditions journal February 2016
The Prospects of Clay Minerals from the Baltic States for Industrial-Scale Carbon Capture: A Review journal March 2022
Higher Gas Solubility in Nanoliquids? journal January 2008
Density Fluctuation in Aqueous Solutions and Molecular Origin of Salting-Out Effect for CO 2 journal October 2017
Climate change conditions (elevated CO2 and temperature) and UV-B radiation affect grapevine (Vitis vinifera cv. Tempranillo) leaf carbon assimilation, altering fruit ripening rates journal July 2015
Carbon capture and storage at the end of a lost decade journal November 2021
Hydration Properties and Interlayer Organization of Water and Ions in Synthetic Na-Smectite with Tetrahedral Layer Charge. Part 1. Results from X-ray Diffraction Profile Modeling journal March 2010
Clay Swelling in Dry Supercritical Carbon Dioxide: Effects of Interlayer Cations on the Structure, Dynamics, and Energetics of CO 2 Intercalation Probed by XRD, NMR, and GCMD Simulations journal February 2018
Intercalation of Gas Molecules in Graphene Oxide Interlayer: The Role of Water journal May 2014
Molecular Simulation Study of Montmorillonite in Contact with Water journal December 2018
Clay Hydration/dehydration in Dry to Water-saturated Supercritical CO2: Implications for Caprock Integrity journal January 2013
Supercritical Carbon Dioxide at Smectite Mineral–Water Interfaces: Molecular Dynamics and Adaptive Biasing Force Investigation of CO 2 /H 2 O Mixtures Nanoconfined in Na-Montmorillonite journal October 2015
In Situ X-ray Diffraction Study of Na + Saturated Montmorillonite Exposed to Variably Wet Super Critical CO 2 journal March 2012
Intercalation and Retention of Carbon Dioxide in a Smectite Clay promoted by Interlayer Cations journal March 2015
Stepwise Hydration of High-Quality Synthetic Smectite with Various Cations journal January 2000
Swelling Properties of Montmorillonite and Beidellite Clay Minerals from Molecular Simulation: Comparison of Temperature, Interlayer Cation, and Charge Location Effects journal August 2015
Molecular Dynamics Study of CO 2 and H 2 O Intercalation in Smectite Clays: Effect of Temperature and Pressure on Interlayer Structure and Dynamics in Hectorite journal October 2017
Monte Carlo simulations of Wyoming sodium montmorillonite hydrates journal January 2001
Well-Tempered Metadynamics: A Smoothly Converging and Tunable Free-Energy Method journal January 2008
Characterizing hydrophobicity of interfaces by using cavity formation, solute binding, and water correlations journal August 2009
On sorption and swelling of CO2 in clays journal March 2016
In Situ Molecular Spectroscopic Evidence for CO 2 Intercalation into Montmorillonite in Supercritical Carbon Dioxide journal April 2012
Competitive sorption of CO2 and H2O in 2:1 layer phyllosilicates journal July 2015
Role of Cations in CO 2 Adsorption, Dynamics, and Hydration in Smectite Clays under in Situ Supercritical CO 2 Conditions journal December 2016
Differential retention and release of CO2 and CH4 in kerogen nanopores: Implications for gas extraction and carbon sequestration journal May 2018
Significant aspects of carbon capture and storage – A review journal December 2019
Molecular Simulation of Carbon Dioxide Capture by Montmorillonite Using an Accurate and Flexible Force Field journal June 2012
Surface geochemistry of the clay minerals journal March 1999