Month: November 2022

Highly Porous Self-Supporting Graphene Oxide-Based Membranes for the Selective Separation of Lithium Ions was written by Cheng, Mengmeng;Chu, Tianfei;Yin, Xiaolu;Hou, Shifeng;Yang, Yanzhao. And the article was included in ACS Sustainable Chemistry & Engineering in 2022.Related Products of 7447-41-8 The following contents are mentioned in the article:

Facilitating the accurate recognition of lithium ions (Li⁺) by filtration membranes is of great significance for the efficient and selective separation of Li⁺ from saline lake brine and seawater. Herein, a highly porous self-supporting graphene oxide-based (GCS) membrane modified by single-walled carbon nanotubes (SWCNTs) and 4-aminobenzo-12-crown-4 (AB12C4) was fabricated via a facile and versatile vacuum filtration method. The highly porous structure constructed with polystyrene microspheres as a self-sacrificial template could provide a larger contact area at the solid-liquid interface. Moreover, the addition of elec. SWCNTs endows the GCS membrane with a tunable adsorption behavior by an external elec. field. Meanwhile, the decoration of AB12C4 on the multilayered GCS membrane realizes a specific recognition of Li⁺ with an excellent adsorption capacity of 37.0 mg g^-1, exhibiting considerably high separation factors against Na⁺ (18.97), K⁺ (26.19), Mg²⁺ (16.67), and Ca²⁺ (19.64). According to the d. functional theory calculations, the adsorption of GCS membrane for Li⁺ is more thermodynamically favorable than that of the contrast ions. This work demonstrates an effective approach with the convenient vacuum filtration technol. for the selective adsorption of Li⁺, which could alleviate the shortage of lithium resources. This study involved multiple reactions and reactants, such as Lithium chloride (cas: 7447-41-8Related Products of 7447-41-8).

Lithium chloride (cas: 7447-41-8) belongs to organic chlorides. Organochlorines stimulate the central nervous system and cause convulsions, tremor, nausea, and mental confusion. Examples are dichlorodiphenyltrichloroethane (DDT), chlordane, lindane, endosulfan, and dieldrin. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.Related Products of 7447-41-8

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Acetoacetyl-CoA reductase PhaB as an excellent anti-Prelog biocatalyst for the synthesis of chiral β-hydroxyl ester and the molecular basis of its catalytic performance was written by Wang, Ting;Yang, Ke;Tian, Qing;Han, Ruiting;Zhang, Xuanshuo;Li, Aipeng;Zhang, Lianbing. And the article was included in Molecular Catalysis in 2021.Synthetic Route of C6H9ClO3 The following contents are mentioned in the article:

Acetoacetyl-CoA reductase PhaB turned out to be capable of catalyzing the anti-Prelog asym. reduction of various β-ketoesters (1a-12a) and aromatic ketones (13a-29a). Particularly, PhaB showed high specific activity and excellent stereoselectivity (93.0%-99.8% eep) toward β-ketoesters. The specific activity of PhaB toward Et 4-chloroacetoacetate 11a was up to 1302.2 mU/mg. The mol. basis anal. showed the rotatable single bonds in β-ketoesters endow them with a high degree of structural flexibility and adaptability. Thus, β-ketoesters could quickly adjust their conformation and further form a productive conformation in the narrow substrate-binding pocket of the enzyme. In contrast, PhaB exhibited low specific activity and stereoselectivity toward the majority of aromatic ketones. The large steric hindrance and rigid structure resulted from aromatic rings made the aromatic ketones impossible to adjust their conformation as conveniently as β-ketoesters. Furthermore, it was found the halogen bond was the major driven force of the high specific activity of PhaB toward chlorinated β-ketoesters (10a and 11a), while the distribution of enzyme-substrate interactions was an important factor determining the enzyme activity besides the steric hindrance. Moreover, the geometric configuration of the substrate and the enzyme substrate-binding pocket played critical roles in determining the substrate binding mode and the enzyme stereoselectivity. This study involved multiple reactions and reactants, such as Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3Synthetic Route of C6H9ClO3).

Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3) belongs to organic chlorides. Organic chlorides can cause corrosion in pipelines, valves and condensers, and cause catalyst poisoning. The hydrocarbon processing industry (HPI) and others are affected by damage caused by these substances. Alkyl chlorides readily react with amines to give substituted amines. Alkyl chlorides are substituted by softer halides such as the iodide in the Finkelstein reaction.Synthetic Route of C6H9ClO3

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Aliphatic polyamide nanofilm with ordered nanostripe, synergistic pore size and charge density for the enhancement of cation sieving was written by Yuan, Bingbing;Zhao, Siheng;Xu, Shaojie;Wang, Ning;Hu, Ping;Chen, Kuo;Jiang, Juhui;Cui, Jiabao;Zhang, Xiaozhuan;You, Meng;Niu, Q. Jason. And the article was included in Journal of Membrane Science in 2022.Quality Control of Lithium chloride The following contents are mentioned in the article:

Enhanced cation sieving selectivity is significant for polyamide (PA) nanofiltration membrane in terms of extracting lithium from Salt Lake brines, which enable to reduce production cost and operating energy consumption. Herein, an aliphatic PA nanofilm with ordered nanostripe was fabricated using a novel distorted and non-coplanar monomer, cyclopentane tetracarboxylic acid chloride (CPTC). Because of the fine-tuning of the dendrimer porous layer, the resultant aliphatic PA membrane revealed decreased thickness in separation layer, and an enhanced synergistic effect of size exclusion and Donnan equilibrium on mono-/divalent cation. Separation experiments indicated that a higher MgCl2 rejection (up to 98.36%) and a lower LiCl rejection (33.3%) were obtained, thus achieving a good cation selectivity (48.25 for Na⁺/Mg2⁺, 36.5 for Li⁺/Mg2⁺). This result was better compared with the full-aromatic and most of the literature reported pos. charged PA membranes. Moreover, water flux of the CPTC-tris(2-aminoethyl) amine (TAEA) membrane with nanostripe structure (N-CPTC-TAEA) increased 3.98-4.74 times (for example, 135.9 ± 4.62 for 2000 ppm LiCl) that of the CPTC-TAEA membrane. Meanwhile, the N-CPTC-TAEA also exhibited a better antifouling property than that of the full-aromatic membrane. This study demonstrates that the N-CPTC-TAEA tends to be an alternative membrane material for cation separation This study involved multiple reactions and reactants, such as Lithium chloride (cas: 7447-41-8Quality Control of Lithium chloride).

Lithium chloride (cas: 7447-41-8) belongs to organic chlorides. An organic chloride is an organic compound containing at least one covalently bonded atom of chlorine. Their wide structural variety and divergent chemical properties lead to a broad range of names and applications. Aliphatic organochlorides are often alkylating agents as chlorine can act as a leaving group, which can result in cellular damage.Quality Control of Lithium chloride

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Multifunctional graphene heterogeneous nanochannel with voltage-tunable ion selectivity was written by Su, Shihao;Zhang, Yifan;Peng, Shengyuan;Guo, Linxin;Liu, Yong;Fu, Engang;Yao, Huijun;Du, Jinlong;Du, Guanghua;Xue, Jianming. And the article was included in Nature Communications in 2022.COA of Formula: ClLi The following contents are mentioned in the article:

Ion-selective nanoporous two-dimensional (2D) materials have shown extraordinary potential in energy conversion, ion separation, and nanofluidic devices; however, different applications require diverse nanochannel devices with different ion selectivity, which is limited by sample preparation and exptl. techniques. Herein, we develop a heterogeneous graphene-based polyethylene terephthalate nanochannel (GPETNC) with controllable ion sieving to overcome those difficulties. Simply by adjusting the applied voltage, ion selectivity among K⁺, Na⁺, Li⁺, Ca²⁺, and Mg²⁺ of the GPETNC can be immediately tuned. At neg. voltages, the GPETNC serves as a mono/divalent ion selective device by impeding most divalent cations to transport through; at pos. voltages, it mimics a biol. K⁺ nanochannel, which conducts K⁺ much more rapidly than the other ions with K⁺/ions selectivity up to about 4.6. Besides, the GPETNC also exhibits the promise as a cation-responsive nanofluidic diode with the ability to rectify ion currents. Theor. calculations indicate that the voltage-dependent ion enrichment/depletion inside the GPETNC affects the effective surface charge d. of the utilized graphene subnanopores and thus leads to the elec. controllable ion sieving. This work provides ways to develop heterogeneous nanochannels with tunable ion selectivity toward broad applications. This study involved multiple reactions and reactants, such as Lithium chloride (cas: 7447-41-8COA of Formula: ClLi).

Lithium chloride (cas: 7447-41-8) belongs to organic chlorides. Organochlorines stimulate the central nervous system and cause convulsions, tremor, nausea, and mental confusion. Examples are dichlorodiphenyltrichloroethane (DDT), chlordane, lindane, endosulfan, and dieldrin. Alkyl chlorides readily react with amines to give substituted amines. Alkyl chlorides are substituted by softer halides such as the iodide in the Finkelstein reaction.COA of Formula: ClLi

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Nanofluid of magnetic-activated charcoal and hydrophobic deep eutectic solvent: Application in dispersive magnetic solid-phase extraction for the determination and preconcentration of warfarin in biological samples by high-performance liquid chromatography was written by Nooraee Nia, Negar;Hadjmohammadi, Mohammad Reza. And the article was included in Biomedical Chromatography in 2021.COA of Formula: C4H12ClN The following contents are mentioned in the article:

In this study, for the first time, nanofluid of magnetic-activated charcoal and hydrophobic deep eutectic solvent (AC@Fe₃O₄-DES) based dispersive magnetic solid-phase extraction was successfully applied for the determination and preconcentration of warfarin in plasma and urine samples. The hydrophobic DES was prepared by mixing tetramethylammonium chloride (as hydrogen bond acceptor) and thymol (as hydrogen bond donor) and acted simultaneously as both carrier and stabilizer for magnetic nanoparticles. In this method, the nanofluid as a new extraction solvent was rapidly injected into the aqueous sample, which led to improvement of the mass transfer of the analytes into the sorbent and reduction of the extraction time. In the screening step, the fractional factorial design was applied for selecting some important parameters which significantly affected the extraction procedure. The effective parameters were then optimized by Box-Behnken design. Under the optimal conditions, the limits of detection were in the range of 0.3-1.6 ng/mL. A good linear range was observed in the range of 1.0-500.0 ng/mL for water and 5.0-500.0 ng/mL for urine and plasma. The intra- and inter-day relative standard deviations were 2.7-3.2 and 1.9-4.5% for five replications, resp. Based on the results, the proposed method was successfully applied for the determination of warfarin in biol. samples, using high-performance liquid chromatog. This study involved multiple reactions and reactants, such as Tetramethylammonium chloride (cas: 75-57-0COA of Formula: C4H12ClN).

Tetramethylammonium chloride (cas: 75-57-0) belongs to organic chlorides. An organic chloride is an organic compound containing at least one covalently bonded atom of chlorine. Their wide structural variety and divergent chemical properties lead to a broad range of names and applications. The haloform reaction, using chlorine and sodium hydroxide, is also able to generate alkyl halides from methyl ketones, and related compounds. Chloroform was formerly produced thus.COA of Formula: C4H12ClN

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Separation of Hf(IV) from Zr(IV) in thiocyanate medium with ionic liquid Aliquat 336 was written by Wu, Ming;Dong, Panfei;Wu, Chenjie;Zhang, Zhenyue;Chi, Ruan;Xu, Zhigao. And the article was included in Hydrometallurgy in 2022.Application In Synthesis of N-Methyl-N,N-dioctyloctan-1-aminium chloride The following contents are mentioned in the article:

Solvent extraction is the key tech. link for the preparation of nuclear-grade Hf and Zr for advanced nuclear reactors. In this study, the separation of Hf(IV) over Zr(IV) from the highly concentrated aqueous feed by solvent extraction with ionic liquid Aliquat 336 was investigated. The results indicated that thiocyanate forms of the ionic liquid dissolved in amyl acetate were more conducive to selective extraction of Hf(IV). Under the selected conditions, optimal extraction efficiency of Hf(IV) could be up to 94.5%. The separation factor of Hf(IV) to Zr(IV) was found to be 19.4. The extraction mechanism of Hf(IV) was revealed by slope anal. and FTIR anal. The extracted complex of Hf(IV) was determined as [(A336⁺)₁₂(HfO²⁺)₃(H⁺)(_12x-2)(SCN^–)(_16+12x)]. The extraction isotherm indicated that nuclear-grade Zr(IV) could be recovered from the raffinate via a two-stage extraction The sulfuric acid solution showed appreciable selectivity in scrubbing of Zr(IV) from the loaded organic phase. The Hf(IV) species in the remaining loaded organic phase could be effectively stripped by 3.0 M (NH₄)₂CO₃ solution Accordingly, a recyclable process flowsheet for the separation of Hf(IV) from Zr(IV) using Aliquat 336 was developed. It is believed that this process is a promising way for the preparation of enriched Hf and high purity Zr. This study involved multiple reactions and reactants, such as N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3Application In Synthesis of N-Methyl-N,N-dioctyloctan-1-aminium chloride).

N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3) belongs to organic chlorides. Organic chlorides are compounds containing a carbon-chlorine bond, which are widely used in the oil field as a wax dissolver. Aryl chlorides may be prepared by the Friedel-Crafts halogenation, using chlorine and a Lewis acid catalyst.Application In Synthesis of N-Methyl-N,N-dioctyloctan-1-aminium chloride

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Multi-faceted Set-up of a Diverse Ketoreductase Library Enables the Synthesis of Pharmaceutically-relevant Secondary Alcohols was written by Voss, Moritz;Kueng, Robin;Hayashi, Takahiro;Jonczyk, Magdalena;Niklaus, Michael;Iding, Hans;Wetzl, Dennis;Buller, Rebecca. And the article was included in ChemCatChem in 2021.Product Details of 638-07-3 The following contents are mentioned in the article:

Enzymes are valuable tools to introduce chirality into small mols. Especially, ketoreductase (KRED)-catalyzed transformations of ketones to yield chiral secondary alcs. have become an established biocatalytic process step in the pharmaceutical and fine chem. industry. Development time, however, remains a critical factor in chem. process development and thus, the competitiveness of a biocatalytic reaction step is often governed by the availability of off-the-shelf enzyme libraries. To expand the biocatalytic toolbox with addnl. ketoreductases, we established a multi-faceted screening procedure to capture KRED diversity from different sources, such as literature, available genome data, and uncharacterized microbial strains. Overall, we built a library consisting of 51 KRED enzymes, 29 of which have never been described in literature before. Notably, 18 of the newly described enzymes exhibited anti-Prelog preference complementing the majority of ketoreductases which generally follow Prelog’s rule. Anal. of the library’s catalytic activity toward a chem. diverse ketone substrate set of pharmaceutical interest further highlighted the broad substrate scope and the complementing enantio-preference of the individual KREDs. Using the generated sequence-function data of the included short chain dehydrogenases in a bioinformatic anal. led to the identification of possible sequence determinants of the stereospecificity exhibited by these enzymes. This study involved multiple reactions and reactants, such as Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3Product Details of 638-07-3).

Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators. Aryl chlorides may be prepared by the Friedel-Crafts halogenation, using chlorine and a Lewis acid catalyst.Product Details of 638-07-3

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Tetracycline adsorption from aqueous solutions by a magnetic nanoadsorbent modified with ionic liquid was written by Kasraei, Ruhollah;Malakootian, Mohammad. And the article was included in Desalination and Water Treatment in 2021.SDS of cas: 5137-55-3 The following contents are mentioned in the article:

Removal of tetracycline (TC) by the adsorption process was investigated by using iron oxide nanoparticles (Fe₃O₄ NP) modified with the trioctylmethylammonium thiosalicylate (TOMATS) ionic liquid (IL) (Fe₃O₄ NP@TOMATS IL) as a new magnetic nanoadsorbent. The adsorbent was characterized by field-emission SEM-energy-dispersive X-ray spectroscopy, Fouriertransform IR, Brunauer-Emmett-Teller, and X-ray diffraction. Batch experiments were carried out to study the sorption kinetics, thermodn., and equilibrium isotherms of TC with Fe₃O₄ NP@TOMATS IL. The results showed that the maximum removal efficiency of TC in optimum conditions of pH (7), contact time (90 min), adsorbent dosage (0.2 mg L-1), temperature (328 K), and initial concentration of TC (30 mg L-1) was obtained 92% and 73% in the synthetic and real samples, resp. Examination of the kinetics and adsorption isotherm equations demonstrated that the adsorption process followed the pseudo-second-order and the Freundlich isotherm. Also, the amount of equilibrium adsorption capacity is 36 mg g-1 in the real sample. Investigation of thermodn. equations revealed that the adsorption by iron oxide nanoparticles modified with TOMATS IL was phys. and spontaneously endothermic. The results obtained from the experiments also indicated that the synthesized nanocomposite has high reusability and recyclability after four periodic cycles. This study involved multiple reactions and reactants, such as N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3SDS of cas: 5137-55-3).

N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3) belongs to organic chlorides. Organochlorines stimulate the central nervous system and cause convulsions, tremor, nausea, and mental confusion. Examples are dichlorodiphenyltrichloroethane (DDT), chlordane, lindane, endosulfan, and dieldrin. The haloform reaction, using chlorine and sodium hydroxide, is also able to generate alkyl halides from methyl ketones, and related compounds. Chloroform was formerly produced thus.SDS of cas: 5137-55-3

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Lamellar and Conductive Ion Associations Advance the Electrochemical Catalytic Performance of Palladium was written by Shi, Jingling;Li, Mengqian;Zheng, Yunshan;Ying, Ye;Guo, Xiaoyu;Wu, Yiping;Liu, Xinling;Wen, Ying;Yang, Haifeng. And the article was included in ACS Applied Energy Materials in 2022.Synthetic Route of Cl4Na2Pd The following contents are mentioned in the article:

Engineering non-Pt electrocatalysts that are accompanied with superior activity and durability toward MeOH oxidation reaction (MOR) remains a great challenge. A lamellar and conductive ion association is easily formed by mixing Na₂PdCl₄, (NH₄)₆Mo₇O₂₄, and cetyltrimethylammonium bromide (CTAB), designated as PdMoCTAB. Through tuning the amounts of precursors, three kinds of Pd supported by lamellar ion association are fabricated by a facile hydrothermal method. Surprisingly, when the at. ratio of Pd and Mo is 1.8:1, the resultant Pd/PdMoCTAB (denoted as Pd_1.8Mo) presents great catalytic performance for MOR in an alk. medium with a high peak c.d. of 2178 mA mg_metal^-1. The mechanism could be due to the high loading efficiency of Pd on the great surface of ion association, rapid mass transferring in the lamellar structure, and abundant strain defects of Pd induced by the deformation of ion association as well as the good conductivity of PdMoCTAB. Pd_1.8Mo also shows improved stability, whereby the c.d. maintains 104 mA mg_metal^-1 after electrochem. catalysis for 10,000 s and, after 500 cycles, the mass activity retains ∼64% of the initial value. Such conductive and lamellar PdMoCTAB ion association is expected to become a promising support to load various noble metals for preparing excellent electrochem. catalysts. This study involved multiple reactions and reactants, such as Sodium tetrachloropalladate(II) (cas: 13820-53-6Synthetic Route of Cl4Na2Pd).

Sodium tetrachloropalladate(II) (cas: 13820-53-6) belongs to organic chlorides. Organochlorines are organic compounds having multiple chlorine atoms. They were the first synthetic pesticides that were used in agriculture. They are resistant to most microbial and chemical degradations. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.Synthetic Route of Cl4Na2Pd

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Novel pyranopyrazole derivatives comprising a benzoxazole core as antimicrobial inhibitors: design, synthesis, microbial resistance and machine aided results was written by Reddy, Guda Mallikarjuna;Kumari, Avula Krishna;Reddy, Vemulapati Hanuman;Garcia, Jarem Raul. And the article was included in Bioorganic Chemistry in 2020.Reference of 638-07-3 The following contents are mentioned in the article:

The synthesis of pyranopyrazoles I (R = Ph, 2-MeC₆H₄, 4-O₂NC₆H₄, etc.) comprising benzoxazole moiety by green approach strategy is reported and their antimicrobial performance on four bacteria and two fungi was studied. Most of the compounds delivered reliable toxicity to kill the pathogens. Among these compounds, the compound I (R = 2-MeC₆H₄) exhibited considerable activity against the microbial pathogens. Moreover, compounds I (R = Ph, 2-MeOC₆H₄, 4-HOC₆H₄) showed prominent antibacterial activity. In addition, mol. docking studies of docked compounds revealed the strong bonding interaction with DNA-gyrase and were docked into the intercalation location of DNA of the DNA-gyrase complex. The mol. bounded to the DNA was stabilized by the H bonds, hydrophobic interactions and π-π interaction. In addition, the linked 5-chlorobenzoxazole structure was stabilized by the DT-8 and DG2009 of the F chain with pi-pi interactions. From the computer-aided results, it was observed that compound I (R = 2-MeC₆H₄) demonstrated maximum docking score -10.0 kcal/mol towards DNA-gyrase. Overall, this investigation suggests that these biol. active compounds can be utilized as led for preclin. studies with the goal of developing newer antimicrobial drugs. This study involved multiple reactions and reactants, such as Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3Reference of 638-07-3).

Ethyl 4-chloro-3-oxobutanoate (cas: 638-07-3) belongs to organic chlorides. Chlorinated organic compounds are found in nearly every class of biomolecules and natural products including alkaloids, terpenes, amino acids, flavonoids, steroids, and fatty acids. Organochlorine compounds are lipophylic, meaning they are more soluble in fat than in water. This gives them a high tenancy to accumulate in the food chain (biomagnification).Reference of 638-07-3

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics