Phillip Pendleton

Decoding gas-solid interaction effects on adsorption isotherm shape: I. Non-polar adsorptives

Publisher: Elsevier BV

Date: 07-2018

DOI: 10.1016/J.MICROMESO.2018.01.010

Immersion Calorimetry: Molecular Packing Effects in Micropores

Publisher: Wiley

Date: 13-10-2015

DOI: 10.1002/CPHC.201500580

Abstract: Repeated and controlled immersion calorimetry experiments were performed to determine the specific surface area and pore-size distribution (PSD) of a well-characterized, microporous poly(furfuryl alcohol)-based activated carbon. The PSD derived from nitrogen gas adsorption indicated a narrow distribution centered at 0.57±0.05 nm. Immersion into liquids of increasing molecular sizes ranging from 0.33 nm (dichloromethane) to 0.70 nm (α-pinene) showed a decreasing enthalpy of immersion at a critical probe size (0.43-0.48 nm), followed by an increase at 0.48-0.56 nm, and a second decrease at 0.56-0.60 nm. This maximum has not been reported previously. After consideration of possible reasons for this new observation, it is concluded that the effect arises from molecular packing inside the micropores, interpreted in terms of 2D packing. The immersion enthalpy PSD was consistent with that from quenched solid density functional theory (QSDFT) analysis of the nitrogen adsorption isotherm.

Uncertainty in pore size distribution derived from adsorption isotherms: II. Adsorption integral approach

Publisher: Elsevier BV

Date: 09-2015

DOI: 10.1016/J.MICROMESO.2015.04.030

Inverse Association Between Gluteofemoral Obesity and Risk of Barrett’s Esophagus in a Pooled Analysis

Publisher: Elsevier BV

Date: 10-2016

DOI: 10.1016/J.CGH.2016.05.032

Inside Cover: Analysis of Adsorbate–Adsorbate and Adsorbate–Adsorbent Interactions to Decode Isosteric Heats of Gas Adsorption (ChemPhysChem 18/2015)

Publisher: Wiley

Date: 12-2015

DOI: 10.1002/CPHC.201501071

Use of Corneal Biomechanical Measures as Endophenotypes for Understanding the Genetics of Keratoconus

Publisher: American Medical Association (AMA)

Date: 09-2019

DOI: 10.1001/JAMAOPHTHALMOL.2019.2068

Isosteric Heats of Adsorption of Gases and Vapors on a Microporous Carbonaceous Material

Publisher: American Chemical Society (ACS)

Date: 11-07-2018

DOI: 10.1021/ACS.JCED.8B00363

Multiple transcription factors mediate acclimation of Chlamydomonas to light stress

Publisher: Cold Spring Harbor Laboratory

Date: 31-10-2023

DOI: 10.1101/2023.10.30.564712

Optimization and kinetics modeling of okara isoflavones extraction using subcritical water

Publisher: Elsevier BV

Date: 10-2019

DOI: 10.1016/J.FOODCHEM.2019.05.129

Abstract: In this study, the soybean milk and tofu byproduct okara was subjected to subcritical water extraction with the intention of recovering isoflavones with minimal degradation. Response Surface Methodology (RSM) of the extraction variables indicated that optimized conditions would be T = 146.23 °C, P = 3.98 MPa, and α = 20 mg (solid)/mL (extractant). Mathematical models for the conversion and degradation of isoflavones were solved as a set of simultaneous equations leading to rate constants and time-dependent concentration profiles for each genistein- and daidzein-based compound. These kinetic analyses suggested that an optimum extraction time, under RSM-optimized conditions, would be 213.5 ± 8.7 min. The results of our study suggest that okara byproducts could be valorized efficiently, as a source of bioactive isoflavone aglycones, using subcritical water. The mathematical models and optimized extraction conditions that we established in this study could be employed, as process control-optimized variables, in the exploitation of okara, specifically in the isolation of genistein and daidzein.

Analysis of Adsorbate–Adsorbate and Adsorbate–Adsorbent Interactions to Decode Isosteric Heats of Gas Adsorption

Publisher: Wiley

Date: 17-11-2015

DOI: 10.1002/CPHC.201500881

Abstract: A qualitative interpretation is proposed to interpret isosteric heats of adsorption by considering contributions from three general classes of interaction energy: fluid-fluid heat, fluid-solid heat, and fluid-high-energy site (HES) heat. Multiple temperature adsorption isotherms are defined for nitrogen, T=(75, 77, 79) K, argon at T=(85, 87, 89) K, and for water and methanol at T=(278, 288, 298) K on a well-characterized polymer-based, activated carbon. Nitrogen and argon are subjected to isosteric heat analyses their zero filling isosteric heats of adsorption are consistent with slit-pore, adsorption energy enhancement modelling. Water adsorbs entirely via specific interactions, offering decreasing isosteric heat at low pore filling followed by a constant heat slightly in excess of water condensation enthalpy, demonstrating the effects of micropores. Methanol offers both specific adsorption via the alcohol group and non-specific interactions via its methyl group the isosteric heat increases at low pore filling, indicating the predominance of non-specific interactions.

Allyl Isothiocyanate Release from Edible Laminaria japonica for Time-Dependent Growth Deactivation of Foodborne Pathogens: I: Micrococcus luteus, Bacillus subtilis, and Listeria monocytogenes

Publisher: Springer Science and Business Media LLC

Date: 13-05-2017

DOI: 10.1007/S11947-017-1925-0

Phenomenological analyses of carbon dioxide adsorption kinetics on supported zinc-functionalized ionic liquid hybrid sorbents

Publisher: Elsevier BV

Date: 03-2016

DOI: 10.1016/J.CEJ.2015.11.054

Decoding gas-solid interaction effects on adsorption isotherm shape: II. Polar adsorptives

Publisher: Elsevier BV

Date: 04-2019

DOI: 10.1016/J.MICROMESO.2018.11.039

Infrared spectrum analysis of the dissociated states of simple amino acids

Publisher: Elsevier BV

Date: 11-2014

DOI: 10.1016/J.SAA.2014.05.026

Abstract: In this work, we present detailed analyses of the dissociation of dilute aqueous solutions of glycine and of lysine over the range 1<pH<12. Using appropriate spectrum subtraction methods, we obtained ATR-IR spectra of the solvated species as a function of pH. Discernible changes in the ionic species were identified in the absorption region between 1800 and 1100 cm(-1). By applying peak deconvolution techniques to the spectra, we correctly interpret the apparent peak shift from 1615 to 1600 cm(-1) as being due to the receding NH3+ asymmetric deformation alongside the appearing COO- asymmetric stretching. The effect of aqueous solution environment was also investigated in terms of 10 and 100 mmol/L NaCl. Salt solution spectra at each pH were also subtracted from each solution phase spectrum. Analysis of the deconvoluted peak areas due to CO and COO- at pH ranges 8 resulted in consistent pKa values for the amino acids.

Particle and cluster analyses of silica powders via small angle neutron scattering

Publisher: Elsevier BV

Date: 11-2008

DOI: 10.1016/J.POWTEC.2017.12.061

Subcritical water enhances hydrolytic conversions of isoflavones and recovery of phenolic antioxidants from soybean byproducts (okara)

Publisher: Elsevier BV

Date: 12-2019

DOI: 10.1016/J.JIEC.2019.08.044

Pore size distributions derived from adsorption isotherms, immersion calorimetry, and isosteric heats: A comparative study

Publisher: Elsevier BV

Date: 2016

DOI: 10.1016/J.CARBON.2015.10.072

Uncertainty in pore size distribution derived from adsorption isotherms: I. Classical methods

Publisher: Elsevier BV

Date: 09-2015

DOI: 10.1016/J.MICROMESO.2015.04.026

The University Of Edinburgh

Location: United Kingdom of Great Britain and Northern Ireland

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University Of Bristol

Location: United Kingdom of Great Britain and Northern Ireland

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University Of Adelaide

Location: Australia

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Linkage Projects - Grant ID: LP0562379

Start Date: 12-2005

End Date: 12-2008

Amount: $420,000.00

Funder: Australian Research Council

Linkage Projects - Grant ID: LP100100613

Start Date: 01-2011

End Date: 01-2014

Amount: $448,000.00

Funder: Australian Research Council

Discovery Projects - Grant ID: DP110101293

Start Date: 2011

End Date: 12-2015

Amount: $410,000.00

Funder: Australian Research Council

Linkage Projects - Grant ID: LP150100626

Start Date: 02-2016

End Date: 06-2019

Amount: $323,779.00

Funder: Australian Research Council

Linkage Projects - Grant ID: LP110200799

Start Date: 03-2012

End Date: 08-2014

Amount: $360,000.00

Funder: Australian Research Council

Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0989675

Start Date: 2009

End Date: 04-2010

Amount: $180,000.00

Funder: Australian Research Council