Month: December 2022

Tian, Haiyuan published the artcileRecovery of natural products from deep eutectic solvents by mimicking denaturation, Application of 1-Methylurea, the main research area is deep eutectic solvent denaturation flavonoid natural product extraction adsorption; MIL 100 Cr synthesis flavonoid extraction Flos sophorae.

A strategy was developed to recover natural products from deep eutectic solvents based on denaturation of the solvents. A method similar to nucleic acid denaturation was used to disrupt the intermol. forces in the deep eutectic solvents to reduce their ability to solubilize and interact with the flavonoids at recovery. MIL-100 (Cr) was added to the system for sorptive separation and recovery of the target compounds from the denaturized deep eutectic solvents. The factors affecting denaturation of the deep eutectic solvents and adsorption of the target compounds were systematically investigated and optimized. The recovery method was further combined with mechanochem. extraction to establish a convenient and efficient protocol for obtaining natural products from plants. Moreover, due to the conjugated structure of MIL-100 (Cr), the adsorbed natural products could be directly analyzed by atm. matrix assisted laser desorption ionization-mass spectrometry (AP/MALDI-MS) without elution. This study provided a strategy for improving the efficiency of separation and recovery of natural products using deep eutectic solvents and also established a protocol for obtaining or analyzing natural products in a green, efficient, and convenient manner.

ACS Sustainable Chemistry & Engineering published new progress about Adsorption. 598-50-5 belongs to class isoquinoline, name is 1-Methylurea, and the molecular formula is C2H6N2O, Application of 1-Methylurea.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Zhuang, Xiuzheng published the artcileSelective catalysis for the reductive amination of furfural toward furfurylamine by graphene-co-shelled cobalt nanoparticles, Name: 2,3-Dimethoxybenzaldehyde, the main research area is graphene cobalt catalyst furfural reductive amination furfurylamine.

Amines with functional groups are widely used in the manufacture of pharmaceuticals, agricultural chems., and polymers but most of them are still prepared through petrochem. routes. The sustainable production of amines from renewable resources, such as biomass, is thus necessary. For this reason, we developed an eco-friendly, simplified, and highly effective procedure for the preparation of a non-toxic heterogeneous catalyst based on earth-abundant metals, whose catalytic activity on the reductive amination of furfural or other derivatives (more than 24 examples) proved to be broadly available. More surprisingly, the cobalt-supported catalyst was found to be magnetically recoverable and reusable up to eight times with an excellent catalytic activity; on the other hand, the gram-scale tests catalyzed by the same catalyst exhibited the similar yield of the target products in comparison to its smaller scale, which was comparable to the com. noble-based catalysts. Further results from a series of anal. technologies involving XRD, XPS, TEM/mapping, and in situ FTIR revealed that the structural features of the catalyst are closely in relation to its catalytic mechanisms. In simple terms, the outer graphitic shell is activated by the electronic interaction as well as the induced charge redistribution, enabling the easy substitution of the -NH2 moiety toward functionalized and structurally diverse mols., even under very mild industrially viable and scalable conditions. Overall, this newly developed catalyst introduces the synthesis of amines from biomass-derived platforms with satisfactory selectivity and carbon balance, providing cost-effective and sustainable access to the wide applications of reductive amination.

Green Chemistry published new progress about Adsorption. 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, Name: 2,3-Dimethoxybenzaldehyde.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Wang, Chao-Yang published the artcileA new one-dimensional coordination polymer synthesized from zinc and guanazole: Superior capture of organic arsenics, Safety of 3,5-Diamino-1,2,4-triazole, the main research area is coordination polymer zinc guanazole bipyridine complex preparation crystal structure; adsorption coordination polymer zinc guanazole bipyridine complex.

Organic arsenic compounds in the environment are a global threat to human health. This threat has created the urgency to develop highly efficient adsorbents with both high adsorption capacity and versatile removal of different arsenic compounds A novel 1D zinc(II) coordination polymer, formulated as Zn2(datrz)2(bpy)Cl2 (BUC-70) (datrz = guanazole, bpy = 4,4′-bipyridine), was successfully synthesized through slow evaporation at room temperature BUC-70 exhibited an excellent adsorption capacity toward p-arsanilic acid (p-ASA) and roxarsone (ROX) in water, which could be ascribed to As-O-Zn bonding interactions and strong hydrogen-bonding interactions between the organic arsenics and BUC-70. The maximum adsorption capacities toward p-ASA and ROX were 738 and 937 mg·g-1, resp. BUC-70 was effective in the removal of p-ASA and ROX at low concentrations (<5 mg·l-1) from the simulated p-ASA and ROX wastewater. Furthermore, the as-synthesized BUC-70 exhibited good adsorption property toward p-ASA and ROX in wastewater simulated by lake water and tap water. After adsorptive treatment using BUC-70, the concentrations of both p-ASA and ROX were lower than the required concentrations of the drinking water standard of the World Health Organization and the surface water standard of China. Continuous-flow, fixed-bed column experiments were performed using BUC-70 loaded on cotton as packing material to explore the potential large-scale application. Applied Organometallic Chemistry published new progress about Adsorption. 1455-77-2 belongs to class isoquinoline, name is 3,5-Diamino-1,2,4-triazole, and the molecular formula is C2H5N5, Safety of 3,5-Diamino-1,2,4-triazole.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Wang, Chao-Yang published the artcileA new one-dimensional coordination polymer synthesized from zinc and guanazole: Superior capture of organic arsenics, Application In Synthesis of 1455-77-2, the main research area is coordination polymer zinc guanazole bipyridine complex preparation crystal structure; adsorption coordination polymer zinc guanazole bipyridine complex.

Organic arsenic compounds in the environment are a global threat to human health. This threat has created the urgency to develop highly efficient adsorbents with both high adsorption capacity and versatile removal of different arsenic compounds A novel 1D zinc(II) coordination polymer, formulated as Zn2(datrz)2(bpy)Cl2 (BUC-70) (datrz = guanazole, bpy = 4,4′-bipyridine), was successfully synthesized through slow evaporation at room temperature BUC-70 exhibited an excellent adsorption capacity toward p-arsanilic acid (p-ASA) and roxarsone (ROX) in water, which could be ascribed to As-O-Zn bonding interactions and strong hydrogen-bonding interactions between the organic arsenics and BUC-70. The maximum adsorption capacities toward p-ASA and ROX were 738 and 937 mg·g-1, resp. BUC-70 was effective in the removal of p-ASA and ROX at low concentrations (<5 mg·l-1) from the simulated p-ASA and ROX wastewater. Furthermore, the as-synthesized BUC-70 exhibited good adsorption property toward p-ASA and ROX in wastewater simulated by lake water and tap water. After adsorptive treatment using BUC-70, the concentrations of both p-ASA and ROX were lower than the required concentrations of the drinking water standard of the World Health Organization and the surface water standard of China. Continuous-flow, fixed-bed column experiments were performed using BUC-70 loaded on cotton as packing material to explore the potential large-scale application. Applied Organometallic Chemistry published new progress about Adsorption. 1455-77-2 belongs to class isoquinoline, name is 3,5-Diamino-1,2,4-triazole, and the molecular formula is C2H5N5, Application In Synthesis of 1455-77-2.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Liu, Chuanyao published the artcilePost-synthesis of a covalent organic framework nanofiltration membrane for highly efficient water treatment, Category: isoquinoline, the main research area is covalent organic framework nanofiltration membrane water.

Nanofiltration (NF) membranes with ultrahigh water flux and high ion rejection are substantially beneficial for desalination and wastewater treatment. However, synthesis of NF membranes with high water permeance while maintaining high ion rejection remains a great challenge. Herein, we report a highly stable covalent organic framework (COF) IISERP-COOH-COF1 membrane with high ion rejection and relatively high water flux. Through post-modification, the pore aperture of the IISERP-COOH-COF1 membrane can be constricted, thus preventing ions from accessing the pores. Further, covalent post-functionalization is helpful to reduce non-selective transport through invisible intercrystalline defects, thus enhancing salt rejection. Demonstrated by both exptl. and simulation studies, the IISERP-COOH-COF1 membrane shows superior ion rejection (e.g., 96.3% for Na2SO4, 97.2% for MgSO4, 99.6% for FeCl3, 90.6% for MgCl2, and 82.9% for NaCl) based on size exclusion, with a water flux above 0.5 L m-2 h-1 bar-1.

Journal of Materials Chemistry A: Materials for Energy and Sustainability published new progress about Adsorption. 1455-77-2 belongs to class isoquinoline, name is 3,5-Diamino-1,2,4-triazole, and the molecular formula is C2H5N5, Category: isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Liu, Chuanyao published the artcilePost-synthesis of a covalent organic framework nanofiltration membrane for highly efficient water treatment, Application of 3,5-Diamino-1,2,4-triazole, the main research area is covalent organic framework nanofiltration membrane water.

Nanofiltration (NF) membranes with ultrahigh water flux and high ion rejection are substantially beneficial for desalination and wastewater treatment. However, synthesis of NF membranes with high water permeance while maintaining high ion rejection remains a great challenge. Herein, we report a highly stable covalent organic framework (COF) IISERP-COOH-COF1 membrane with high ion rejection and relatively high water flux. Through post-modification, the pore aperture of the IISERP-COOH-COF1 membrane can be constricted, thus preventing ions from accessing the pores. Further, covalent post-functionalization is helpful to reduce non-selective transport through invisible intercrystalline defects, thus enhancing salt rejection. Demonstrated by both exptl. and simulation studies, the IISERP-COOH-COF1 membrane shows superior ion rejection (e.g., 96.3% for Na2SO4, 97.2% for MgSO4, 99.6% for FeCl3, 90.6% for MgCl2, and 82.9% for NaCl) based on size exclusion, with a water flux above 0.5 L m-2 h-1 bar-1.

Journal of Materials Chemistry A: Materials for Energy and Sustainability published new progress about Adsorption. 1455-77-2 belongs to class isoquinoline, name is 3,5-Diamino-1,2,4-triazole, and the molecular formula is C2H5N5, Application of 3,5-Diamino-1,2,4-triazole.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Loloei, Mahsa published the artcilePostsynthetic Modification of Zn/Co-ZIF by 3,5-Diamino-1,2,4-triazole for Improved MOF/Polyimide Interface in CO2-Selective Mixed Matrix Membranes, Related Products of isoquinoline, the main research area is postsynthetic diaminotriazole MOF polyimide interface CO2 matrix membrane.

Amine-functionalized zeolite imidazolate frameworks (ZIF) are known to improve the mixed matrix membranes (MMM) separation performances for CO2/CH4 applications. In this study, 3,5-diamino-1,2,4-triazole, a ligand with -NH2 functionality and uncoordinated -NH group, was used in the postsynthetic modification of dual metal Zn/Co-ZIF for partial substitution of 2-methylimidazole to obtain a biligand Zn/Co-ZIF (Zn/Co-TZ1h) with retained crystallinity, tunable pore size and enhanced CO2 adsorption capacity. A series of mixed matrix membranes were then fabricated at a single concentration (7.5 wt %) of parent Zn/Co-ZIF or Zn/Co-TZ1h in 6FDA-ODA or Matrimid polyimides to compare the effect of modified ZIF to its unmodified analog on the MMM properties and CO2/CH4 separation performance. Zn/Co-TZ1h MMM showed enhanced mech. properties and better filler integration into the polymer matrix as a result of better interfacial interactions via hydrogen bonding while retaining the same thermal stability as Zn/Co-ZIF MMM. Moreover, the combination of ZIF gate size control, improved size discrimination, and specific chem. interaction gave the NH2-functionalized Zn/Co-ZIF MMM the possibility to significantly overcome the CO2/CH4 separation performance of the pure polymer. Postsynthetic modification of ZIF by amine-functionalized ligands can be an effective strategy to improve the filler/polymer interface quality resulting in improved MMM separation properties.

Industrial & Engineering Chemistry Research published new progress about Adsorption. 1455-77-2 belongs to class isoquinoline, name is 3,5-Diamino-1,2,4-triazole, and the molecular formula is C2H5N5, Related Products of isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Loloei, Mahsa published the artcilePostsynthetic Modification of Zn/Co-ZIF by 3,5-Diamino-1,2,4-triazole for Improved MOF/Polyimide Interface in CO2-Selective Mixed Matrix Membranes, Related Products of isoquinoline, the main research area is postsynthetic diaminotriazole MOF polyimide interface CO2 matrix membrane.

Amine-functionalized zeolite imidazolate frameworks (ZIF) are known to improve the mixed matrix membranes (MMM) separation performances for CO2/CH4 applications. In this study, 3,5-diamino-1,2,4-triazole, a ligand with -NH2 functionality and uncoordinated -NH group, was used in the postsynthetic modification of dual metal Zn/Co-ZIF for partial substitution of 2-methylimidazole to obtain a biligand Zn/Co-ZIF (Zn/Co-TZ1h) with retained crystallinity, tunable pore size and enhanced CO2 adsorption capacity. A series of mixed matrix membranes were then fabricated at a single concentration (7.5 wt %) of parent Zn/Co-ZIF or Zn/Co-TZ1h in 6FDA-ODA or Matrimid polyimides to compare the effect of modified ZIF to its unmodified analog on the MMM properties and CO2/CH4 separation performance. Zn/Co-TZ1h MMM showed enhanced mech. properties and better filler integration into the polymer matrix as a result of better interfacial interactions via hydrogen bonding while retaining the same thermal stability as Zn/Co-ZIF MMM. Moreover, the combination of ZIF gate size control, improved size discrimination, and specific chem. interaction gave the NH2-functionalized Zn/Co-ZIF MMM the possibility to significantly overcome the CO2/CH4 separation performance of the pure polymer. Postsynthetic modification of ZIF by amine-functionalized ligands can be an effective strategy to improve the filler/polymer interface quality resulting in improved MMM separation properties.

Industrial & Engineering Chemistry Research published new progress about Adsorption. 1455-77-2 belongs to class isoquinoline, name is 3,5-Diamino-1,2,4-triazole, and the molecular formula is C2H5N5, Related Products of isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Cao, Dan published the artcileAdsorption behavior of anthraquinones in deep eutectic solvent on polyester fiber and its application, Related Products of isoquinoline, the main research area is polyester fabric anthraquinone deep eutectic solvent adsorption dyeing.

Deep eutectic solvents (DESs) can be used to facilitate the adsorption of anthraquinone dyes into polyester fabrics (PETFs) in facile conditions. The adsorption mechanism was investigated through a systematic characterization study using methods including 1H NMR spectroscopy, UV-visible spectroscopy, SEM, Fourier transform IR spectroscopy, thermogravimetric anal., water contact angle anal., and tensile strength tests. It was found that anthraquinone dyes have different types of interactions with DESs, and that the adsorption and dyeing of PETF can be achieved only when the interactions between PETF and anthraquinones were stronger than those between the PETF and DESs. Addnl., the type of DES, hydrogen bond acceptor-hydrogen bond donor ratio, dye concentration, dyeing temperature, and dyeing time affect the adsorption and dyeing efficiency. In summary, PETF was successfully dyed with DES as a solvent, and the presence of DES did not destroy the PETF or significantly change its properties. Meanwhile, anthraquinone dyes affect the properties of PETF by forming non-covalent interactions. This study provides insights into problems encountered with adsorption and separation of target compounds in DESs, and provides the textile industry with a potentially much greener alternative that can reduce energy consumption and pollutant emissions, and avoid using toxic solvents for dyeing fabrics using DESs.

Sustainable Chemistry and Pharmacy published new progress about Adsorption. 598-50-5 belongs to class isoquinoline, name is 1-Methylurea, and the molecular formula is C2H6N2O, Related Products of isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Mahouachi, Lamia published the artcileNatural clay as a sorbent to remove pharmaceutical micropollutants from wastewater, Safety of Diatrizoic Acid, the main research area is diatrizoic acid iopamidol metformin removal wastewater clay sorbentpharmaceutical micropollutant; Micro-pollutants; Montmorillonite; Natural adsorbent; Removal capacity; Water treatment.

Worldwide, the aquatic environment is contaminated by micro-pollutants, such as ingredients of personal care products, pesticides and pharmaceuticals. This contamination is one of the major environmental issues of global concern. Adsorption is one of approach, which has been most extensively discussed within recent years for the reduction of the input of micro-pollutants into the environment. In the present study, the natural clay classified as Na-montmorillonite, was characterized and tested for its potential to remove four model compounds representing different polarity and ionizability: (i) diatrizoic acid (DAT), (ii) iopamidol (IOP), (iii) metformin (MTF), and (iv) carbamazepine (CBZ). The adsorption efficiency of clay was evaluated by initial compound concentration, effect of pH, contact time and temperature The results indicated that clay was able to remove the pharmaceuticals from aqueous medium with an efficiency of 70% for CBZ and MTF. In contrast, clay showed a lower removal of 30% for DAT and no removal for IOP. The results indicate that clay could rapidly and efficiently reduce the concentration of CBZ and MTF, which could provide a solution to remove some substances, without undesirable byproduct generation. However, this study clearly demonstrated that removal rates strongly depend on the compound Albeit chem. structure may play a role for the different degree of removal, this study could not completely explain the sorption mechanism between sorbent-sorbate interactions.

Chemosphere published new progress about Adsorption. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Safety of Diatrizoic Acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem