Powder X-ray diffraction, infrared and 13C NMR spectroscopic studies of the homologous series of some solid-state zinc(II) and sodium(I) n-alkanoates

Nelson, Peter N.; Taylor, Richard A.

doi:10.1016/j.saa.2014.11.010

Cited by 13 publications

(14 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1570 cm À1 )a re similart ot hat of the free carboxylate ion (in the sodium salt of stearic acid, at 1567 cm À1 ). [33] The similarf requencies indicate that the carboxylates are expected to be involved in very weak hydrogen-bonding interactions. [32] There is no discernible frequency difference between the OH stretching bands in the spectra of neat d-REA and C18REA;t he strengths of their intermolecular H-bonding interactions appear to be comparable.…”

Section: Hydrogen-bonding Information From Ftir Spectrasupporting

confidence: 58%

See 1 more Smart Citation

Insights into the Gelating Abilities of Ricinelaidic Acid and its Ammonium Salts: How do Stereochemistry, Charge, and Chain Lengths Control Gelation of a Long‐Chain Alkenoic Acid?

Zhang

Weiss

2016

ChemPhysChem

View full text Add to dashboard Cite

The gelating abilities of ricinelaidic acid (d-REA), the trans-isomer of ricinoleic acid (d-RA), and a series of its alkylammonium and alkane-α,ω-diammonium salts have been examined in a wide range of organic liquids. The gelation efficiency of the trans acid is much better than that of the cis, although neither is as efficient as is the completely saturated molecular gelator analogue, (R)-12-hydroxystearic acid (d-12HSA). The formation of ammonium salts also improves the gelation ability of d-REA in high polarity liquids. The gelating properties are highly dependent upon the chain length of the alkyl group of the alkylammonium salts, but not very dependent on the chain length of the alkane-α,ω-diammonium salts. Structural insights from Fourier transform infrared spectroscopy and powder X-ray diffraction indicate that the absence or presence of unsaturation, the incorporation of (charged) ammonium centers, and the different chain lengths of the alkylammonium salts lead to different packing arrangements and different strengths of H-bonding interactions within the gel assemblies of the d-REA derivatives. Insights into the relationships among the various systematic structural changes to d-REA and the properties of their aggregated structures, including the gel states, are provided.

show abstract

Section: Hydrogen-bonding Information From Ftir Spectrasupporting

confidence: 58%

“…The frequencies of the asymmetric stretching band of the ammonium salts (ca. 1570 cm −1 ) are similar to that of the free carboxylate ion (in the sodium salt of stearic acid, at 1567 cm −1 ) . The similar frequencies indicate that the carboxylates are expected to be involved in very weak hydrogen‐bonding interactions .…”

Section: Resultsmentioning

confidence: 98%

Insights into the Gelating Abilities of Ricinelaidic Acid and its Ammonium Salts: How do Stereochemistry, Charge, and Chain Lengths Control Gelation of a Long‐Chain Alkenoic Acid?

Zhang

Weiss

2016

ChemPhysChem

View full text Add to dashboard Cite

show abstract

“…4° (222). Additionally, a reflection at 2θ = 20.798° is distinguishable (Figure 4 inset) that is characteristic of the lamellar structures of organic compounds arranged in a monoclinic set system that can be assigned to the space group P21/a [31][32][33][34]. Hence the superhydrophobic surface is made of wellorganized layers.…”

Section: Structural Characterizationmentioning

confidence: 99%

“…The assembly of these hierarchical structures increases the roughness allowing the air to be trapped in the whole surface pockets producing a Cassie-Baxter wetting regime [35]. In addition, the nanolayers of the superhydrophobic surface are arranged in a monoclinic crystal structure that can be related to greater lateral Van der Waals interactions between laurate chains in the lattice [32].…”

Section: Structural Characterizationmentioning

confidence: 99%

Non-Fluorinated, Sustainable, and Durable Superhydrophobic Microarrayed Surface for Water-Harvesting

2020

View full text Add to dashboard Cite

Water scarcity is a worldwide issue that significantly affects the environment, population, and economy of the arid zones. In this study, we report a straightforward method for water-harvesting based on modifications of the surface wettability. Using magnesium chloride, lauric acid, and electrodeposition process, a superhydrophobic surface (155°) is obtained. Morphological characterization techniques allow determination of the characteristic flower-like microstructures combined with close packed nanoarrays that lead to the hierarchical structure. Furthermore, the coating presents vertically aligned microarrays in a non-linear cone morphology formed by dynamic templating of hydrogen bubbles. From a chemical point of view, magnesium laurate is responsible for the surface tension decrease. To determine the durability of the obtained surface ultra-violet (UV) light test and abrasive paper test, tests are carried out revealing high durability against these severe conditions. The water-harvesting ability of the superhydrophobic surface is studied at 45° and 90° tilted samples. The capacity of the water to be harvested efficiently is found to be at 90° tilt under fog conditions. The use of green reactants associated with this hierarchical structure broadens a new scope for sustainable freshwater collection and it becomes an excellent example of a green solution.

show abstract

“…14,22,23 The chemical shift of the carbonyl group is assigned to the signal at 184.87 ppm, whereas the observed resonance at 14.84 ppm is attributed to the methyl carbon from the end of the carbon chain. The signals between 24 and 37 ppm correspond to the carbons from the middle of the chain.…”

Section: Tests For Reuse Of Zinc Octanoatementioning

confidence: 99%

Isopropyl Octanoate Synthesis Catalyzed by Layered Zinc n-Octanoate

Maruyama¹,

Kanda²

2016

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

Isopropyl octanoate is an ester used in the formulation of cosmetics, foods, medicines, and other products. The peculiar thermodynamic and kinetic factors, allied with the demand for the applications mentioned above, justify the development of an optimized process for its synthesis. In the present article, the esterification of octanoic acid with isopropanol while using zinc n-octanoate as catalyst is reported. A factorial design was employed where variables such as molar ratio (alcohol:acid), percentage of catalyst (in relation to the acid mass) and temperature were investigated. It was observed that zinc octanoate showed promising catalytic activity, especially at 165 °C, with molar ratios of 8:1 and 6:1, and with 7 and 10% of catalyst, where conversions up to 75% were observed. Optimized conditions for the production of isopropyl octanoate were determined to be 165 °C, 6:1 molar ratio and 5.97% of catalyst.

show abstract

Powder X-ray diffraction, infrared and 13C NMR spectroscopic studies of the homologous series of some solid-state zinc(II) and sodium(I) n-alkanoates

Cited by 13 publications

References 28 publications

Insights into the Gelating Abilities of Ricinelaidic Acid and its Ammonium Salts: How do Stereochemistry, Charge, and Chain Lengths Control Gelation of a Long‐Chain Alkenoic Acid?

Insights into the Gelating Abilities of Ricinelaidic Acid and its Ammonium Salts: How do Stereochemistry, Charge, and Chain Lengths Control Gelation of a Long‐Chain Alkenoic Acid?

Non-Fluorinated, Sustainable, and Durable Superhydrophobic Microarrayed Surface for Water-Harvesting

Isopropyl Octanoate Synthesis Catalyzed by Layered Zinc n-Octanoate

Contact Info

Product

Resources

About