Day: December 2, 2022

Csendes, Zita published the artcileInfluence of the Ionic Liquid on the Activity of a Supported Ionic Liquid Phase FeII Pincer Catalyst for the Hydrogenation of Aldehydes, Related Products of isoquinoline, the main research area is silica supported ionic liquid iron pincer catalysis aldehyde hydrogenation; Hydrogenation; Ionic liquids; Iron; Supported catalysts; Sustainable chemistry.

The catalytic hydrogenation of different aldehydes to the corresponding alcs. was investigated using an FeII hydride pincer complex as catalyst in the supported ionic liquid phase (SILP) reaction mode. Two different ionic liquids of the type [X4441][NTf2] with X=N or P were applied with mesoporous silica gel as support, which was coated first with a chemisorbed monolayer of the corresponding modified IL to remove acidic surface OH-groups and to prevent IL leaching. Quant. conversion with turn-over frequencies in the order of 1000 h-1 were obtained for various aromatic and heteroaromatic aldehydes and highly selective aldehyde reduction was observed also for substrates containing reducible C=C bonds. Aldehydes with longer aliphatic chains or cycloalkyl substituents, however, showed no conversion here, in contrast to a previous study with an imidazolium-based ionic liquid These differences were ascribed primarily to differences in substrate/ionic liquid interactions. Whereas [N4441][NTf2] and [P4441][NTf2] gave essentially identical results for different substrates in single-batch reactions, prolonged use of the catalyst in repeated reaction cycles lead to a quick drop-off in catalyst activity in [P4441][NTf2], but a continuous, quant. conversion in [N4441][NTf2].

European Journal of Inorganic Chemistry published new progress about Adsorption. 1205-17-0 belongs to class isoquinoline, name is 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, and the molecular formula is C11H12O3, Related Products of isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Peng, An-Zhong published the artcileN-doped porous carbons derived from a polymer precursor with a record-high N content: Efficient adsorbents for CO2 capture, Recommanded Product: 3,5-Diamino-1,2,4-triazole, the main research area is nitrogen doped porous carbon polymer precursor; adsorbent carbon dioxide capture.

N-doped porous carbons (NPCs) are characterized by well-developed porosity and N-doped active sites, which makes them suitable for CO2 capture. However, their application in practice is obstructed by the relatively low N-doped content and unsatisfactory adsorption capacity. Herein, we report the synthesis of NPCs through the rational design of the precursor NUT-21 (NUT means Nanjing Tech University) with a record-high N content (up to 46.16%, wt). The NUT-21 was fabricated by the polymerization of two simple monomers of 2,4,6-tris(bromomethyl)mesitylene and 3,5-diamino-1,2,4-triazole with an unusually high N content of 70.67% (wt). With the carbonization of NUT-21 at different temperatures (500, 600, and 700°, resp.), a series of NPCs possessing various porosity and N contents are produced, successfully. For the NPC generated at 600°, the N content can reach 7.41% (wt), the surface area is 2208 m2/g, the micropore volume is 0.791 cm3/g, and the CO2 capacity is up to 8.3 mmol/g at 273 K and 1 bar, which is much higher than those of benchmarks including 13X zeolite (4.1 mmol/g) and activated carbon (2.8 mmol/g), and most carbon-based adsorbents reported till now. It was proved in our previous studies that the ultrahigh N content of the precursor was beneficial for both the formation of developed porosity and the generation of abundant N-doped sites, which can give rise to superior capacity and selectivity of CO2 capture. The NPCs obtained may offer to be highly promising candidates for CO2 separation from gas mixtures including natural gas and flue gas.

Chemical Engineering Journal (Amsterdam, Netherlands) 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, Recommanded Product: 3,5-Diamino-1,2,4-triazole.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Chiang, Chao-Lung published the artcileEnhancement of CO2 adsorption and separation for non-porous Zn/Co azolate frameworks via ethanol-induced structural transformation, Application In Synthesis of 104-01-8, the main research area is carbon dioxide zinc cobalt azolate adsorption separation.

Non-porous zinc/cobalt azolate frameworks with diamond-type crystal structure (MAF-31/ZIF-D-CoM) have been synthesized in large scale with an acid-catalyzed process. Afterward, an ethanol exposure process was applied for 1, 7, and 14 days to transform MAF-31/ZIF-D-CoM into porous T-MAF-4/T-ZIF-67. Two porous zinc/cobalt azolate frameworks standards (MAF-4/ZIF-67) with sodalite-type crystal structures were prepared with a solvent-free method for comparison with T-MAF-4/T-ZIF-67. Effects of ethanol vapor exposure on structual transformation of MAF-31/ZIF-D-CoM were characterized throughly. Obvious structural transfomations between non-porous and porous zinc/cobalt azolate frameworks were found with X-ray diffraction (XRD), Field-emission scanning electron microscope (FE-SEM), and X-ray absorption near-edge structure/extended X-ray absorption fine structure (XANES/EXAFS) spectra. After the 14-day ethanol vapor exposure, the CO2 adsorption uptakes of MAF-31 and ZIF-D-CoM in low/high pressures were enhanced from 5.18 × 10-5/0.68 and 1.20 × 10-4/0.18 to 1.76 × 10-3/8.27 and 1.99 × 10-3/11.2 mmol/g, resp. The CO2 selectivities of MAF-31/ZIF-D-CoM were also improved from 0.29/2.34 to 6.33/16.47. In addition, CO2 adsorption over zinc/cobalt azolate frameworks obeyed both Langmuir/Freundlich adsorption isotherm models with good agreements.

Journal of the Taiwan Institute of Chemical Engineers published new progress about Adsorption. 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Application In Synthesis of 104-01-8.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Vidic, Jasmina published the artcileGold Surface Functionalization and Patterning for Specific Immobilization of Olfactory Receptors Carried by Nanosomes, Product Details of C11H12O3, the main research area is gold surface functionalization patterning immobilization olfactory receptor carried nanosome.

There is substantial interest in engineering solid supports to achieve functional immobilization of membrane receptors both for investigation of their biol. function and for the development of novel biosensors. Three simple and practical strategies for immobilization of a human olfactory receptor carried by nanosomes are presented. The basis of the functionalization of solid gold surfaces is a self-assembled monolayer (SAM) containing biotinyl groups. Biotinyl groups are subsequently used to attach neutravidin and then biotinylated monoclonal antibody directed against the receptor to allow its specific grafting. Surface plasmon resonance technique is implemented for real-time monitoring of step-by-step surface functionalization and, in addition, for testing the functional response of immobilized olfactory receptors. The authors show that OR1740 is functional when immobilized via a tag attached to its C-terminus, but not via its N-terminus. Finally, the authors demonstrate that gold surfaces can be patterned by the SAMs tested using microcontact printing. AFM images of immobilized nanosomes onto a patterned surface suggest that small nanosomes flatten and fuse into larger vesicles but do not merge into a continuous layer. The whole study emphasizes the outstanding performances of the BAT/PEGAT SAM, which could be useful for developing on-a-chip sensor formats for membrane receptor investigations and use.

Analytical Chemistry (Washington, DC, United States) published new progress about Adsorption. 1205-17-0 belongs to class isoquinoline, name is 2-Methyl-3-(3,4-methylenedioxyphenyl)propionaldehyde, and the molecular formula is C11H12O3, Product Details of C11H12O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Altmann, Johannes published the artcileCombination of granular activated carbon adsorption and deep-bed filtration as a single advanced wastewater treatment step for organic micropollutant and phosphorus removal, COA of Formula: C11H9I3N2O4, the main research area is granular activated carbon adsorption deep bed filtration wastewater treatment; carbon organic micropollutant phosphorus removal granular activated; Adsorption; Deep-bed filtration; Granular activated carbon (GAC); Organic micropollutants; Wastewater treatment.

Adsorption onto granular activated carbon (GAC) is an established technol. in water and advanced wastewater treatment for the removal of organic substances from the liquid phase. Besides adsorption, the removal of particulate matter by filtration and biodegradation of organic substances in GAC contactors has frequently been reported. The application of GAC as both adsorbent for organic micropollutant (OMP) removal and filter medium for solids retention in tertiary wastewater filtration represents an energy- and space saving option, but has rarely been considered because high dissolved organic carbon (DOC) and suspended solids concentrations in the influent of the GAC adsorber put a significant burden on this integrated treatment step and might result in frequent backwashing and unsatisfactory filtration efficiency. This pilot-scale study investigates the combination of GAC adsorption and deep-bed filtration with coagulation as a single advanced treatment step for simultaneous removal of OMPs and phosphorus from secondary effluent. GAC was assessed as upper filter layer in dual-media downflow filtration and as mono-media upflow filter with regard to filtration performance and OMP removal. Both filtration concepts effectively removed suspended solids and phosphorus, achieving effluent concentrations of 0.1 mg/L TP and 1 mg/L TSS, resp. Anal. of grain size distribution and head loss within the filter bed showed that considerable head loss occurred in the topmost filter layer in downflow filtration, indicating that most particles do not penetrate deeply into the filter bed. Upflow filtration exhibited substantially lower head loss and effective utilization of the whole filter bed. Well-adsorbing OMPs (e.g. benzotriazole, carbamazepine) were removed by >80% up to throughputs of 8000-10,000 bed volumes (BV), whereas weakly to medium adsorbing OMPs (e.g. primidone, sulfamethoxazole) showed removals <80% at <5,000 BV. In addition, breakthrough behavior was also determined for gabapentin, an anticonvulsant drug recently detected in drinking water resources for which suitable removal technologies are still largely unknown. Gabapentin showed poor adsorptive removal, resulting in rapid concentration increases. Whereas previous studies classified gabapentin as not readily biodegradable, sustained removal was observed after prolonged operation and points at biol. elimination of gabapentin within the GAC filter. The application of GAC as filter medium was compared to direct addition of powd. activated carbon (PAC) to deep-bed filtration as a direct process alternative. Both options yielded comparable OMP removals for most compounds at similar carbon usage rates, but GAC achieved considerably higher removals for biodegradable OMPs. Based on the results, the application of GAC in combination with coagulation/filtration represents a promising alternative to powd. activated carbon and ozone for advanced wastewater treatment. Water Research published new progress about Adsorption. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, COA of Formula: C11H9I3N2O4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Norra, Giannis-Florjan published the artcileRemoval of persistent organic contaminants from wastewater using a hybrid electrochemical-granular activated carbon (GAC) system, HPLC of Formula: 117-96-4, the main research area is granular activated carbon organic contaminant wastewater treatment.

A three-dimensional (3D) electrochem. flow-through reactor equipped with GAC packed bed, polarized by the elec. field, was evaluated for the removal of persistent organic contaminants from real sewage effluent. The performance of the reactor was investigated for 27 consecutive runs at two anodic current densities, i.e., low c.d. (LCD) of 15 A m-2, and high c.d. (HCD) of 100 A m-2. In the HCD experiments, the adsorption ability of saturated GAC was increased, mainly due to the increase in the mesoporosity of GAC. A synergy between electrosorption/adsorption on GAC and electrooxidation was observed in terms of the removal of all target pollutants. DEET presented the highest synergy, ranging from 40% to 57%, followed by iopromide (22-46%), carbamazepine (15-34%) and diatrizoate (4-30%). The addition of GAC decreased the concentrations of toxic chlorate and perchlorate by 2-fold and 10-fold, resp., due to their electrosorption on GAC. Also, 3D electrochem. system yielded lower concentrations of adsorbable organic iodide (AOI) and adsorbable organic chlorine (AOCl). Thus, addition of low amounts of GAC in electrochem. systems may be a low-cost and simple way of minimizing the formation and final effluent concentrations of toxic halogenated byproducts.

Journal of Hazardous Materials published new progress about Adsorption. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, HPLC of Formula: 117-96-4.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Gu, Lin published the artcileInsights into the role of an Fe-N active site in the oxygen reduction reaction on carbon-supported supramolecular catalysts, Product Details of C2H5N5, the main research area is iron nitrogen active site oxygen reduction carbon supramol catalyst.

In this study, a nitrogen-containing ligand supramol. named PPYTZ was successfully synthesized using 2,6-pyridinedicarboxylic acid chloride and 3,5-diamino-1,2,4-triazole in order to carry out oxygen reduction reaction (ORR). Such a polymer provides abundant coordination sites for iron ions, and the PPYTZ-Fe/C composite catalyst was formed with the PPYTZ-Fe complex loading on the surface of Vulcan XC-72 carbon. The phys. characteristics and ORR performance of the composite catalysts were characterized systematically via various relevant techniques, and their catalytic activity and reaction mechanism were evaluated and compared. The results showed that the catalytic activities and the reaction mechanism of ORR were highly dependent on the formation of an Fe-N unit. Accordingly, the PPYTZ-Fe/C catalyst containing Fe-N active sites exhibited high ORR catalytic activity (an onset potential of +0.86 V vs. RHE) in 0.1 M KOH. Such an Fe-N catalyst can accelerate the adsorption of O2 and increase the limiting c.d. (from 2.49 mA cm-2 to 4.98 mA cm-2), optimizing the ORR catalytic process from a two-electron process to a four-electron process (an n value of 3.8).

RSC Advances 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, Product Details of C2H5N5.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Li, Yanqin published the artcileEffects of N-, P-, or O-containing ligands on gold-based complex catalysts for acetylene hydrochlorination, Recommanded Product: 4-Methoxyphenylacetic acid, the main research area is acetylene hydrochlorination nitrogen phosphorus oxygen ligand gold complex catalyst.

In line with the fulfillment of international Minamata Convention and the urgent need for developing non-mercury catalysts, Au-Lx/AC catalysts were synthesized and evaluated for the hydrochlorination of acetylene. The results showed that the interaction between ligands and Au species contributed to the enhanced catalytic activity with important and different roles of each ligand. Depending on the high electronegativity of heteroatoms, all the prepared catalysts had effectively improved their adsorption and activation capacity of hydrogen chloride. Specifically, the N-containing ligands in catalysts increased the dispersion of Au species and an enhanced adsorption of acetylene was observed While, the coordination of P-containing ligands with Au can increase the relative content of active Aun+ species and the O-containing ligands rather decreased the adsorption of acetylene. Furthermore, all the prepared Au-Lx/AC catalysts showed good stabilities based on the inhibition of the agglomeration of Au components or of coking deposition.

Applied Catalysis, A: General published new progress about Adsorption. 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Recommanded Product: 4-Methoxyphenylacetic acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Wang, Xuri published the artcileHollow, mesoporous, eutectic Zn1-xMgxO nano-spheres as solid acid-base catalysts for the highly regio-selective O-methylation of 1,2-diphenols, Computed Properties of 151-10-0, the main research area is magnesium zinc oxide methylation regioselective catalyst nanosphere composite kinetics.

The highly regio-selective O-methylation of catechol with di-Me carbonate (DMC), catalyzed by a solid acid-base catalyst, is an environmentally friendly chem. process for industrial production of guaiacol. However, a guaiacol yield below 84% and high reaction temperature above 280 °C limit its industrial application. Here, hollow, mesoporous Zn1-xMgxO nano-spheres with a eutectic structure, denoted as Zn1-xMgxO HMNSs (x = 0.012-0.089), are facilely fabricated via the calcination of Mg2+/Zn2+ ion-adsorbing carbon spheres at 500 °C in air. In the O-methylation of catechol with DMC at 180 °C, Zn1-xMgxO HMNSs (x = 0.052) afford guaiacol in 95.5% yield with a complete catechol conversion. Furthermore, 89.0-95.3% mono-ether yields with high 1,2-diphenol conversions (94.5-100%) are also obtained for the other 1,2-diphenols bearing -CH3 and -Br groups. Moreover, a plausible mechanism for highly selective O-methylation of catechol with DMC is proposed, in which the single-site activation and double-site activation of phenolic hydroxyls by the basic oxygen of Mg-O afford guaiacol and veratrole, resp.

Catalysis Science & Technology published new progress about Adsorption. 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Computed Properties of 151-10-0.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Xu, Jian published the artcileCatalytic degradation of diatrizoate by persulfate activation with peanut shell biochar-supported nano zero-valent iron in aqueous solution, Category: isoquinoline, the main research area is catalytic degradation diatrizoate persulfate peanut biochar iron aqueous solution; degradation; diatrizoate; nano zero-valent iron; peanut shell biochar; persulfate activated.

An emerging pollutant, diatrizoate (DTZ) has been frequently detected in aqueous solution Unique reticular peanut shell biochar (BC)-supported nano zero-valent iron (nZVI) composite (nZVI/BC) was successfully synthesized and used as a catalyst for activating persulfate (PS) to promote the removal of DTZ. The structure and morphol. of the nanocomposite materials were characterized by SEM, X-ray diffraction, Brunauer-Emmett-Teller measurements, and Fourier transform IR spectroscopy. The degradation of DTZ (20 mg L-1) was achieved by activating PS with the nanocomposite material. The removal of DTZ reached nearly 100% using 25 mM PS and 0.45 g L-1 nZVI/2BC (mass ratio of nZVI and BC at 1:2) nanocomposite material at pH 3.0 and 25°C. Influencing factors, such as dosages of nZVI/2BC and PS, temperature, and pH were also investigated. The mechanisms of PS activation with nZVI/2BC were discussed, including BC property, electron transfer, and the identification of free radicals in the reaction. The findings demonstrated that nZVI/BC-PS (peanut shell BC-supported nZVI activating PS) is a promising material for the treatment of refractory organic pollutants.

International Journal of Environmental Research and Public Health published new progress about Adsorption. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Category: isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem