Category: 78-50-2

Computed Properties of C24H51OP. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Tri-n-octylphosphine Oxide, is researched, Molecular C24H51OP, CAS is 78-50-2, about Recovery of neodymium, dysprosium, and iron from spent mobile phone camera module magnets through a hydrometallurgical method. Author is Sun, Pan-Pan; Seo, Hyeon; Cho, Sung-Yong.

Neodymium (Nd), dysprosium (Dy), and iron (Fe) were recovered from spent mobile phone camera modules via leaching and a solvent extraction procedure. Nd, Dy, and Fe, together with other minor metal ions in the pretreated spent mobile phone camera modules, were dissolved using an HNO3 solution The leaching parameters, such as concentration of lixivant, reaction temperature, pulp d., which possibly affect the dissolution efficiency of metal ions, were investigated. From the obtained leachate containing Nd, Dy, Fe, Ni, Co, and B, Nd and Dy, with a small amount of Fe, were extracted using 0.5 mol/L of trioctylphosphine oxide (TOPO). Selective stripping of Nd and Dy from the loaded TOPO was achieved using 3 mol/L hydrochloric acid. After removing Nd and Dy from the leachate, Fe was extracted using 1 mol/L of TOPO followed by stripping with oxalic acid. McCabe-Thiele diagrams for the extraction and stripping of Nd/Dy and Fe were constructed. The results were validated via counter-current simulation experiments using a real leachate solution Finally, an integrated process for recovery of Nd, Dy, and Fe from the nitric acid leachate of spent mobile phone camera modules was proposed.

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Reference:
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 78-50-2, is researched, SMILESS is CCCCCCCCP(CCCCCCCC)(CCCCCCCC)=O, Molecular C24H51OPJournal, Article, Nanomaterials called Low-temperature synthesis of titanium oxynitride nanoparticles, Author is Jansen, Felicitas; Hoffmann, Andreas; Henkel, Johanna; Rahimi, Khosrow; Caumanns, Tobias; Kuehne, Alexander J. C., the main research direction is titanium oxynitride nanoparticle low temperature synthesis; capacitor; colloid synthesis; energy storage; metal oxynitride; nanoparticles.Computed Properties of C24H51OP.

The synthesis of transition metal oxynitrides is complicated by extreme reaction conditions such as high temperatures and/or high pressures. Here, we show an unprecedented solutionbased synthesis of narrowly dispersed titanium oxynitride nanoparticles of cubic shape and average size of 65 nm. Their synthesis is performed by using titanium tetrafluoride and lithium nitride as precursors alongside trioctylphosphine oxide (TOPO) and cetrimonium bromide (CTAB) as stabilizers at temperatures as low as 250°C. The obtained nanoparticles are characterized in terms of their shape and optical properties, as well as their crystalline rock-salt structure, as confirmed by XRD and HRTEM anal. We also determine the composition and nitrogen content of the synthesized particles using XPS and EELS. Finally, we investigate the applicability of our titanium oxynitride nanoparticles by compounding them into carbon fiber electrodes to showcase their applicability in energy storage devices. Electrodes with titanium oxynitride nanoparticles exhibit increased capacity compared to the pure carbon material.

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Reference:
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: Tri-n-octylphosphine Oxide( cas:78-50-2 ) is researched.Name: Tri-n-octylphosphine Oxide.Gao, Fang; Liu, Yang; Lei, Chang; Liu, Chao; Song, Hao; Gu, Zhengying; Jiang, Pei; Jing, Sheng; Wan, Jingjing; Yu, Chengzhong published the article 《The Role of Dendritic Mesoporous Silica Nanoparticles′ Size for Quantum Dots Enrichment and Lateral Flow Immunoassay Performance》 about this compound( cas:78-50-2 ) in Small Methods. Keywords: dendritic mesoporous silica nanoparticle quantum dot lateral flow immunoassay; dendritic mesoporous silica; lateral flow immunoassays; quantum dots; ultrasensitive detection. Let’s learn more about this compound (cas:78-50-2).

Using dendritic mesoporous silica nanoparticles (DMSNs) for quantum dots (QDs) enrichment and signal amplification is an emerging strategy for improving the detection sensitivity of lateral flow immunoassay (LFIA). In this study, a new and convenient approach is developed to prepare water-dispersible DMSNs-QDs. A series of DMSNs with various diameters (138, 251, 368, and 471 nm) are studied for loading QDs and LFIA applications. The resultant water-dispersible DMSNs-QDs exhibit a high fluorescence retention of 81.8%. The increase in particle size from 138 to 471 nm results in an increase in loading capacity of QDs and a decrease in binding quantity of the DMSNs-QDs in the test line of LFIA. This trade-off leads to an optimal DMSNs-QDs size of 368 nm with a limit of detection reaching 10 pg mL-1 (equivalent to 9.0 × 10-14 m) for the detection of C-reactive protein, which is nearly an order of magnitude more sensitive than the literature. To the best of the authors′ knowledge, this study is the first to demonstrate the distinctive role of DMSN′s size for QDs enrichment and LFIA. The strategy developed from this work is useful for the rational design of high-quality QDs-based nanoparticles for ultrasensitive detection.

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Reference:
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method

HPLC of Formula: 78-50-2. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Tri-n-octylphosphine Oxide, is researched, Molecular C24H51OP, CAS is 78-50-2, about Fe-Ion-Catalyzed Synthesis of CdSe/Cu Core/Shell Nanowires. Author is Chen, Mao; Xu, Lekai; Wang, Jiao; Liu, Baokun; Wang, Kun; Qi, Qi; Zhu, Yaqiong; Yang, Xin; Chai, Wencui; Yang, Peixu; Zhang, Weidong; Liu, Jinhui; Jia, Guanwei; Zhang, Shaojun; Du, Jiang.

CdSe/Cu core/shell nanowires (NWs) are successfully synthesized by a wet chem. method for the first time. By utilizing the solution-liquid-solid (SLS) mechanism, CdSe NWs are fabricated by Bi seeds, which act as catalysts. In the subsequent radial overcoating of the Cu shell on the CdSe NWs, Fe ions have been proven to be an indispensable and efficient catalyzer. The thickness of the Cu shell could be well controlled in the range of 3 to 6 nm by varying the growth temperature (from 300 to 360 °C). Our synthetic strategy pioneers a new possibility for the controlled synthesis of semiconductor-metal heterostructure NWs (especially for II-VI semiconductors), such as CdS/Cu, ZnS/Au, and ZnO/Ag, which had broad application prospects in photoconductors, thin-film transistors, and light-emitting diodes. Theor., electrons flow from a higher Fermi-level material to the bottom Fermi-level at the metal-semiconductor heterojunction interface, which aligns the Fermi level and establishes the Schottky barrier. It leads to excess neg. charges in metals and excess pos. charges in semiconductors. Therefore, those effective electron traps reduce the probability of photogenerated electron-hole pair recombination efficiently, which has been widely applied in solar cells, sensors, photocatalysis, and energy storage. The breakthrough and innovation of this synthesis method have opened up a new synthetic route with a mild reaction environment, low energy consumption, and convenience.

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Reference:
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method

Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 78-50-2, is researched, Molecular C24H51OP, about Design and fabrication of electrospun mixed-matrix multi-layered membranes containing tri-n-octylphosphine oxide for efficient adsorption of p-cresol, the main research direction is cresol adsorption octylphosphine oxide electrospun mixed matrix multilayered membrane.Name: Tri-n-octylphosphine Oxide.

In this study, various types of mixed-matrix cellulose triacetate (CTA) fibrous membranes were prepared by a combined electrospinning and electrospraying process, in which tri-n-octylphosphine oxide (TOPO) powders were incorporated on the surface of the fibers to remove uremic toxin p-cresol by adsorption. The morphol., chem. composition (element anal.), and textural properties of the prepared fibrous membranes were first analyzed. The adsorption ability of various fibrous membranes for p-cresol in synthetic serum was then studied in batch experiments at pH 7.4 and 37°C. It was seen that the loose structure of the electrospun fibrous membranes was beneficial to the rate of adsorption and the position where the TOPO stayed on the fibers played a crucial role in the availability of TOPO and hence the adsorption performance. The maximum adsorption of p-cresol was 6.45 mmol per g of TOPO, highlighting the adsorption ability of as-prepared mixed-matrix membranes. Moreover, the electrospun TOPO-coated fibers covered with a thin layer of the electrospun CTA fibers largely improved cell viability. The present results have demonstrated the application potential of electrospun/sprayed mixed-matrix fibrous membranes with TOPO for efficient adsorption of p-cresol.

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Reference:
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Recovery of organic acids from pre-treated Kraft black liquor using ultrafiltration and liquid-liquid extraction》. Authors are Nunez, Daniel; Oulego, Paula; Collado, Sergio; Riera, Francisco A.; Diaz, Mario.The article about the compound:Tri-n-octylphosphine Oxidecas:78-50-2,SMILESS:CCCCCCCCP(CCCCCCCC)(CCCCCCCC)=O).Application In Synthesis of Tri-n-octylphosphine Oxide. Through the article, more information about this compound (cas:78-50-2) is conveyed.

Kraft black liquor (BL) is a toxic residue from paper manufacture that can be revalorized to obtain high value-added products. In this study, different integrated processes, consisting of a pre-treatment (lignin recovery [LR] or partial wet oxidation [PWO]) followed by ultrafiltration (UF) and liquid-liquid extraction (LLE), have been evaluated in order to recover short-chain organic acids (OA) from BL. After the UF step, a partial purification of OA was observed Thus, the COD fraction attributable to OA increase 26.0%, 36.6% and 11.3% for untreated BL, BL after lignin recovery (LRBL) and partially oxidised BL (WOBL), resp. The final LLE step was optimized analyzing different combinations of extractants (trioctylamine, trioctylphosphine oxide and tributylphosphate), diluents (n-hexane and heptane) and temperatures (25, 40 and 55°C), concluding that the most suitable solvent was 30% trioctylamine in heptane (volume/volume) at 40°C, in which 76% of the OA mass was recovered in LRBL, 72% in BL and 68% in WOBL. The pre-treatment of BL improved the final recovery yield of OAs, increasing from 24.7% to 28.1% and 29.4% through PWO and LR, resp. Therefore, LR was considered the most suitable pre-treatment due to its lower operating cost, widespread use, and greater recovery of OA.

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Reference:
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method

Application In Synthesis of Tri-n-octylphosphine Oxide. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: Tri-n-octylphosphine Oxide, is researched, Molecular C24H51OP, CAS is 78-50-2, about Determination of the Wurtzite and Zincblende Fractions in II-VI Semiconductor Nanowires. Author is Harder, Philip; Nielsen, Andreas; Sassnau, Ann-Katrin; Bonatz, Dennis; Perbandt, Markus; Kipp, Tobias; Mews, Alf.

We present a detailed powder X-ray diffraction (p-XRD) and transmission electron microscopy (TEM) study to explore the structural properties of CdS, CdSe, and CdTe semiconductor nanowires (NWs) grown by the solution-liquid-solid (SLS) method. The SLS method yields easily dispersible NWs with a controllable diameter and polytypic crystal structure. The different samples exhibit different wurtzite (WZ) and zincblende (ZB) fractions, which are investigated by high-resolution TEM of selected wires with distinct crystallog. orientations, and also by p-XRD of a large amount of NWs. In combination with atomistic models containing up to one million atoms, we calculate diffraction patterns based on the kinematic theory of diffraction. We show that the ZB-rate in WZ-rich NWs can be directly determined from relative reflex intensities in the exptl. p-XRD data.

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Reference:
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Separation and Purification Technology called Solvent extraction of lithium ions using benzoyltrifluoroacetone in new solvents, Author is Masmoudi, Abderrazak; Zante, Guillaume; Trebouet, Dominique; Barillon, Remi; Boltoeva, Maria, which mentions a compound: 78-50-2, SMILESS is CCCCCCCCP(CCCCCCCC)(CCCCCCCC)=O, Molecular C24H51OP, Product Details of 78-50-2.

This work studies the solvent extraction of lithium ions from alk. aqueous solutions by chelating agent 3-benzoyl-1,1,1-trifluoroacetone (HBTA). To develop a more eco-friendly extraction system for lithium than currently used, various hydrophobic room-temperature ionic liquids were investigated as diluents. The influence of several exptl. parameters on lithium extraction was examined, including aqueous phase pH, the nature of lithium counter-ion, extractant concentration, the addition of elec. neutral co-extractant. It was found that contrary to the traditional extraction systems with mol. diluents, HBTA alone dissolved in 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ionic liquid extracts efficiently lithium ions from the aqueous solution The addition of co-extractant, tri(n-octyl)phosphine oxide (TOPO) to HBTA did not result in a synergetic effect. To confirm the mechanism of lithium extraction by HBTA dissolved in ionic liquid (IL), the measurements of IL constituent ions and deprotonated HBTA concentrations in the equilibrium aqueous phase were carried out. Anal. of the results suggests that an elec. neutral lithium-HBTA extractant complex is extracted into the IL phase. The system combining HBTA extractant and 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ionic liquid has high selectivity for lithium over sodium but poor selectivity over calcium. We have shown also that a high stripping ratio can be obtained using relatively concentrated aqueous solutions of hydrochloric acid. Finally, it was found that the use of some deep eutectic solvents as diluents is much less efficient compared with ILs.

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Reference:
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method

HPLC of Formula: 78-50-2. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: Tri-n-octylphosphine Oxide, is researched, Molecular C24H51OP, CAS is 78-50-2, about Recovery of Co, Ni, and Li from solutions by solvent extraction with β-diketone system. Author is Zhang, Licheng; Ji, Lianmin; Li, Lijuan; Shi, Dong; Xu, Taoshan; Peng, Xiaowu; Song, Xuexue.

A method of recovering cobalt, nickel, and lithium from mixed solutions was proposed based on β-diketone solvent extraction using benzoyltrifluoroacetone (HBTA), trioctylphosphine oxide (TOPO), and green kerosene. The effective metal recovery and separation parameters such as solution pH, saponification degree, extraction time, and phase ratio were evaluated exptl. The results indicated that cobalt and nickel were recovered through 2-stage cross-current extraction at different phase ratios and that lithium was recovered through three-stage countercurrent extraction The metal-loaded organic phase was stripped using an inorganic acid solution to obtain cobalt-, nickel-, and lithium-concentrated solutions The Co/Ni and Ni/Co molar ratios in the cobalt- and nickel-concentrated solutions were 54.4 and 164, resp., and the lithium concentration reached 1.78 × 104 mg L-1 in the lithium-enriched solution The extraction mechanism was studied, and the results revealed that Co2+ and Ni2+ were extracted by ion exchange in which two moles of H+ or Na+ had been replaced by divalent metal ions. The Li+ extraction stoichiometry was studied by cultivating single crystals. Because cobalt, nickel, and lithium were recovered by single extraction, no other organic substances were required. This work provides a sustainable, environmentally friendly, and versatile method of recovering valuable metals from spent lithium batteries.

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Reference:
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method

Demir, Ozge; Gok, Asli; Uslu, Hasan; Kirbaslar, Sah Ismail published an article about the compound: Tri-n-octylphosphine Oxide( cas:78-50-2,SMILESS:CCCCCCCCP(CCCCCCCC)(CCCCCCCC)=O ).Related Products of 78-50-2. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:78-50-2) through the article.

Cis,cis-Muconic acid falls under the category of carboxylic acids and finds application mostly in biodegradable polymers, agrochems., and the food industry. Owing to the high thermal reactivity based upon the two-terminal carboxylic groups present in their structure, the chem. industry has widely used carboxylic acids. The major obstacle encountered during the production of carboxylic acids is their recovery from aqueous solutions and fermentation media. Therefore, the recovery of HccMA by reactive extraction as a particular product capture method, using tri-n-octylphosphine oxide (TOPO) and tri-Bu phosphate (TBP) in organic diluents such as 1-butanol, isoamyl alc., Me Et ketone (MEK), Me iso-Bu ketone (MIBK), diisobutyl ketone, isobutanol, n-hexane, di-Me glutarate, Et propionate, and di-Et carbonate (DEC) was executed in this study. This method was exptl. conducted to explore the most proper extractant and diluent combination. Extraction experiments were also conducted with pure diluents alone to examine the extractant effect on the extraction system. The important extraction parameters like distribution coefficient (KD), extraction efficiency (E %), loading ratio (Z), dimerization constant (D), partition coefficient (P), and complexation constant (KE11) were determined Mass action law model interpreted the obtained results. For HccMA/TOPO extraction system, the maximum extraction efficiency was found 93.19% in the presence of n-hexane as a diluent. For HccMA/TBP extraction system, the maximum extraction efficiency was found 90.37% in the presence of Et propionate as a diluent. Thermodn. studies at variable temperatures were also carried out to estimate ΔH, ΔS, and ΔG of the process. To investigate the feasibility of designing a counter-current liquid-liquid extraction column, the number of theor. stages (NTS) were assessed by theodified Kremser equation and found between 3 and 5 to et the desired extraction efficiency.

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Reference:
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method