Reaction Parameters for the Synthesis of N,N-Dimethyl Fatty Hydrazides from Oil

Ahmad, Norashikin; Hasan, Zafarizal Aldrin Azizul; Hassan, Hamimah; Ahmad, Mansor Bin; Yunus, Wan M.-D. Zin Wan

doi:10.5650/jos.ess14097

Cited by 4 publications

(5 citation statements)

References 19 publications

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“…View of the upper part of the stratigraphic succession of Cerro de los Batallones. The boundary between Units II and III is marked by a gilgai ‘mukkara’ (yellow dashed line) indicative of a palaeosol profile (Paton, ; Ahmad, ). Unit II comprises mainly sepiolite‐rich mudstone containing chert nodules (arrowed); the overlying yellowish‐whitish deposits correspond to detrital and carbonate sediments of Unit III .…”

Section: Geological Settingmentioning

confidence: 99%

Pattern of sedimentary infilling of fossil mammal traps formed in pseudokarst at Cerro de los Batallones, Madrid Basin, central Spain

et al. 2013

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Fossil mammal sites of late Miocene age (ca 9 Ma) occur in hourglassshaped, non-interconnected cavities up to 15 m deep, hosted in mudstone (mostly sepiolite), chert and carbonate bedrock in Cerro de los Batallones. This paper provides a model for the sedimentary infilling of the cavities, which functioned as traps for vertebrate faunas and contain one of the richest and best preserved Neogene mammal assemblages of the Iberian Peninsula. Generation of the mammal-bearing cavities started with the solution of underlying evaporites, which resulted in fissures that were subsequently enlarged by subsurface piping, a process rarely preserved in the ancient sedimentary record. The system of subterranean cavities evolved into a pseudokarst landscape, resulting in doline-like shafts reaching the ancient land surface. The sedimentary infilling of the cavities comprises both clastic and carbonate lithofacies that were investigated by outcrop observation, standard and scanning electron microscope petrography, mineralogical analysis, and stable isotope geochemistry. Gravel and breccia talus deposits, clast and mud-supported gravel, pebbly sandstone and mudstone are common detrital infill deposits mostly derived by overflow erosion of bedrock. The deposits containing the mammal bones are marls, and occur both in subsurface cavities and doline-like depressions. In the underground cavities, marlstone was mainly of clastic origin and accumulated in ponds scattered over the floor of the cavity. In contrast, marlstone deposits in the surface dolines formed mostly as a result of biochemical carbonate deposition in small shallow lakes subjected to fluctuation of the water level. The d 18 O and d 13 C carbonate values indicate different origins for the two kinds of marls. During the final phases of pipe infill the doline marlstone sealed the mammal sites, usually off-lapping the adjacent bedrock.

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Section: Geological Settingmentioning

confidence: 99%

Pattern of sedimentary infilling of fossil mammal traps formed in pseudokarst at Cerro de los Batallones, Madrid Basin, central Spain

et al. 2013

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“…The pH of the medium plays a predominant role on metal uptake process because it directly impacts the protonation of the functional groups and controls the degree of ionization of the sorbent materials [79,80]. The effect of pH was verified by the batch model in a range varied from 1.0 to 9.0 for Pb (II) cations and from 4.0 to11.0 for Cr (VI) cations using fixed conditions of 50 mg adsorbent, 2 h contact time, and 50 ml aqueous solution evaluating 100 mg/L Cr (VI) or Pb (II) cations at ambient temperature.…”

Section: Selection Of the Optimum Phmentioning

confidence: 99%

“…It can be observed that increasing the amount of adsorbent improved the metal uptake capacities of both metal ions. This may be explained on the basis of the active sites available for metal capturing [80]. It is believed that the incorporation of clay nanoparticles into the polymer matrix enhanced the sorption performance of the hydrogel due to the recognized high surface area/volume ratio of clay material [82,83].…”

Section: Effect Of Sorbent Dosementioning

confidence: 99%

“Gamma Irradiation Synthesis of Carboxymethyl Chitosan-Nanoclay Hydrogel for the Removal of Cr(VI) and Pb(II) from Aqueous Media”

Abdel-Raouf

Kamal

Hegazy

et al. 2023

J Inorg Organomet Polym

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Hydrogel composites comprised of N,O carboxymethyl chitosan crosslinked with different weight ratios of acrylic acid and fabricated with nanoclay particle were prepared via gamma irradiation at 25 kGy irradiation dose. The prepared composites were coded as CsAA1Cl, CsAA2Cl and CsAA3Cl based on the weight ratio of acrylic acid to the chitosan derivative. The claimed hydrogels were characterized by FTIR, TGA and XRD. The TGA data implied that the incorporation of clay nanoparticles enhanced the thermal stability of the composites; the decomposition temperature increased up to 500 °C for CsAA3Cl. Three AFM outcomes were used to compare the surface features of the samples; topography, height and surface roughness. The topography data reveals that the nanoclay particles incorporated in CsAA3Cl are intercalated and exfoliated. Then, the optimized sorbent (CsAA3Cl) was investigated as green sorbents for chromium (VI) and lead (II). The data revealed that CsAA3Cl displayed maximum removal performance towards both lead and chromium with removal efficiencies 125 mg/g and 205 mg/g respectively at the optimum application conditions within 90 min only. Also, it was found that the optimum pH value was 9 for chromium and 8 for lead. The data proved that the adsorption of both cations followed pseudo-first order kinetic model. The prepared composites showed acceptable metal uptake capacity at three successive cycles. Graphical Abstract

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“…20,21 Alkylation reactions like methylation have been utilized for the modulation of the aromatic p-conjugated systems of polymers, 22 and there have been reports on the advancement of this concept in the modication of the surface groups of some polymers and small molecules towards excellent interfacial interactions for various targeted applications. 23,24 Today, methylation remains a popular structural modication pathway in synthetic and medicinal chemistry. [25][26][27] For instance, N-methylated peptides have demonstrated high aqueous solubility, 28 which is benecial to their interfacial properties within their environments for efficient drug delivery.…”

Section: Sustainablementioning

confidence: 99%

Methylated precursor leads to carbon nitride (CN_x) with improved interfacial interactions for enhanced photocatalytic performance

Ohemeng

Godin

2023

Sustainable Energy Fuels

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Reaction Parameters for the Synthesis of N,N-Dimethyl Fatty Hydrazides from Oil

Cited by 4 publications

References 19 publications

Pattern of sedimentary infilling of fossil mammal traps formed in pseudokarst at Cerro de los Batallones, Madrid Basin, central Spain

Pattern of sedimentary infilling of fossil mammal traps formed in pseudokarst at Cerro de los Batallones, Madrid Basin, central Spain

“Gamma Irradiation Synthesis of Carboxymethyl Chitosan-Nanoclay Hydrogel for the Removal of Cr(VI) and Pb(II) from Aqueous Media”

Methylated precursor leads to carbon nitride (CN_x) with improved interfacial interactions for enhanced photocatalytic performance

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Reaction Parameters for the Synthesis of N,N-Dimethyl Fatty Hydrazides from Oil

Cited by 4 publications

References 19 publications

Pattern of sedimentary infilling of fossil mammal traps formed in pseudokarst at Cerro de los Batallones, Madrid Basin, central Spain

Pattern of sedimentary infilling of fossil mammal traps formed in pseudokarst at Cerro de los Batallones, Madrid Basin, central Spain

“Gamma Irradiation Synthesis of Carboxymethyl Chitosan-Nanoclay Hydrogel for the Removal of Cr(VI) and Pb(II) from Aqueous Media”

Methylated precursor leads to carbon nitride (CNx) with improved interfacial interactions for enhanced photocatalytic performance

Contact Info

Product

Resources

About

Methylated precursor leads to carbon nitride (CN_x) with improved interfacial interactions for enhanced photocatalytic performance