Effect of Surface Chemistry on Confined Phase Behavior in Nanoporous Media: An Experimental and Molecular Modeling Study

Langmuir : the ACS Journal of Surfaces and Colloids
Evan Lowry, Mohammad Piri

Abstract

It is well accepted that nanopore size is a controlling parameter in determining the phase behavior of confined adsorbate molecules. Despite this knowledge, the quantitative effect of surface chemistry on the confined phase behavior is a factor that remains obfuscated. Obtaining a complete understanding of the variables controlling confined phase behavior is a critical step in developing more complete equations of state for predictive modeling. To this end, a combined experimental and molecular modeling study was conducted to investigate the effects of surface chemistry and wetting on the confined phase behavior of propane and n-butane in modified and unmodified silica MCM-41. Isotherms were measured in four types of silica MCM-41 modified with varying sizes of alkyl groups to determine the effects of increasing surface modification. Results showed that increased pore surface coverage of carbon resulted in a notable change in the capillary condensation pressures, adsorption enthalpy, and confined critical temperature of the adsorbate. Correlations between the surface coverage of carbon and the confined critical temperature were presented and supported by thermodynamic arguments. The primary conclusions were partially supported ...Continue Reading

References

Dec 1, 1996·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·K S Page, P A Monson
Mar 4, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·S Z QiaoD Nicholson
Apr 20, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·John P HanrahanJustin D Holmes
Jun 23, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Kunimitsu Morishige, Yuka Nakamura
Jun 29, 2011·Proceedings of the National Academy of Sciences of the United States of America·Tod A PascalYousung Jung
Jun 14, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Gennady Yu GorAlexander V Neimark
Jul 31, 2013·Journal of Colloid and Interface Science·S H Zandavi, C A Ward
Apr 4, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Elizabeth BarsottiJin-Hong Chen

❮ Previous
Next ❯

Citations

Jun 12, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Jiaoyan LiMilind D Deo

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Langmuir : the ACS Journal of Surfaces and Colloids
Peter I RavikovitchPeter J Carrott
Langmuir : the ACS Journal of Surfaces and Colloids
S Z QiaoD Nicholson
Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
Alexander V NeimarkA Vishnyakov
Langmuir : the ACS Journal of Surfaces and Colloids
B CoasneKeith E Gubbins
© 2022 Meta ULC. All rights reserved