Influence of the functionalization agent and crystalline phase of MnO2 Janus nanomaterials on the stability of aqueous nanofluids and its catalytic activity to promote asphaltene oxidation

Rivera-Quintero, P.A.; Mercado, D. Fabio; Ballesteros-Rueda, Luz M.

doi:10.1016/j.colcom.2021.100525

Cited by 12 publications

(2 citation statements)

References 69 publications

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“…β-MnO 2 catalyst synthesis and characterization were reported in previous studies by Rivera-Quintero et al Manganese oxide nanoparticles were obtained by liquid-phase oxidation as proposed by Wang et al In this method, 0.008 mol of MnSO 4 and 0.008 mol of (NH 4 ) 2 S 2 O 8 were dissolved in 40 mL of ultrapure water and mixed with a magnetic stirrer at 600 rpm for 10 min to ensure complete dissolution. The solution was transferred to a Teflon-lined stainless-steel autoclave, sealed, and heated for 12 h at 140 °C.…”

Section: Experimental Developmentmentioning

confidence: 99%

Compositional Effect on the Low-Temperature Oxidation of Crude Oils Subjected to In Situ Combustion

et al. 2023

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This work shows the compositional effect on low-temperature oxidation of crude oils subjected to in situ combustion (ISC). Three heavy crudes were used in this study in which detailed information on the molecular species involved in ISC was obtained by ultra-high-resolution mass spectrometry. The oxidation was carried out on a mixture of 2% of crude oil in Ottawa sand in an isothermal cell using a batch system at 1500 psi at three conditions: (i) reservoir temperature of each crude oil, (ii) 180 °C, and (iii) 180 °C using a heterogeneous catalyst-type β-MnO 2 . The oil remaining after the reaction was extracted from the sand and characterized by FT-ICR MS using (+) atmospheric pressure photoionization and (−) electrospray ionization modes. The acidity of the oxidation products (extracts) and the composition of the produced carbon oxides were also monitored. A greater amount of carbon oxides produced, a lower extraction yield of organic matter in the sand after the reaction, and a higher acidity in the extracts, implied a higher reactivity. In the same sense, a higher reactivity was observed for the sample with the highest sulfur content and over the most aromatic compounds. The use of the catalyst at 180 °C promoted the oxidative reactions in two of three of the oils, as well as the formation of polyoxygenated acids over monocarboxylic acids for one of the oils, which implies that the application of this technology strongly depends on the composition of the oil.

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Section: Experimental Developmentmentioning

confidence: 99%

Compositional Effect on the Low-Temperature Oxidation of Crude Oils Subjected to In Situ Combustion

et al. 2023

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“…It offers a complete and methodical look at the process of creating highly oriented artificial fibres for biological applications [118]. In the development, regeneration and characterization of a blended system combining Bombyx Mori silk fibroin protein and cellulose acetate, a cellulose derivative, silk may be mixed with cellulose derivatives [119]. Many studies on the combination of silk and cellulose acetate for filament/fibre manufacturing may be found in the literature [106,114,118,[120][121][122][123][124][125][126][127][128].…”

Section: Design Of Cellulose With Microfluidicsmentioning

confidence: 99%

Cellulose through the Lens of Microfluidics: A Review

Moud

2022

Applied Biosciences

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Cellulose, a linear polysaccharide, is the most common and renewable biopolymer in nature. Because this natural polymer cannot be melted (heated) or dissolved (in typical organic solvents), making complicated structures from it necessitates specialized material processing design. In this review, we looked at the literature to see how cellulose in various shapes and forms has been utilized in conjunction with microfluidic chips, whether as a component of the chips, being processed by a chip, or providing characterization via chips. We utilized more than approximately 250 sources to compile this publication, and we sought to portray cellulose manufacturing utilizing a microfluidic system. The findings reveal that a variety of products, including elongated fibres, microcapsules, core–shell structures and particles, and 3D or 2D structured microfluidics-based devices, may be easily built utilizing the coupled topics of microfluidics and cellulose. This review is intended to provide a concise, visual, yet comprehensive depiction of current research on the topic of cellulose product design and understanding using microfluidics, including, but not limited to, paper-based microfluidics design and implications, and the emulsification/shape formation of cellulose inside the chips.

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Simultaneous adsorption of hydrophilic and lipophilic dyes on iron-doped hydroxyapatite/carbon dots nanocomposites

Mercado

Monje

Ballesteros-Rueda

et al. 2023

Advanced Powder Technology

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Influence of the functionalization agent and crystalline phase of MnO2 Janus nanomaterials on the stability of aqueous nanofluids and its catalytic activity to promote asphaltene oxidation

Cited by 12 publications

References 69 publications

Compositional Effect on the Low-Temperature Oxidation of Crude Oils Subjected to In Situ Combustion

Compositional Effect on the Low-Temperature Oxidation of Crude Oils Subjected to In Situ Combustion

Cellulose through the Lens of Microfluidics: A Review

Simultaneous adsorption of hydrophilic and lipophilic dyes on iron-doped hydroxyapatite/carbon dots nanocomposites

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