Oxygenated solvents

Ebook "Polyoxomolybdates as green catalysts for aerobic oxidation" describes the importance of the selective oxidation of alcohols and advantages of heterogeneous catalysts over conventional catalysts, use of environmentally benign oxidants, and the design of selective catalysts by tailoring of polyoxometalates at the molecular level. Chapter 2 describes synthesis, characterization 11-molybdophosphate based supported materials and their use as heterogeneous catalysts for oxidation of alcohols with molecular oxygen under solvent free mild reaction condition.

63p tudohanhtau1006 29-03-2024 2 1   Download

Lecture Physical science: Chapter 7 provide students with content about: most materials are mixtures; the chemist’s classification of matter; solutions; solubility; soaps, detergents, and hard water; purifying the water we drink; wastewater treatment;... Please refer to the detailed lecture content!

22p diepkhinhchau 18-09-2023 3 3   Download

Zeolite-templated synthesis of ordered microporous carbons was performed with Ca2+ ion-exchanged Y and beta zeolites, where the conventionally used carbon source gases (e.g., ethylene and propylene) were replaced by various organic solvents, such as methanol, ethanol, isopropanol, acetone, tetrahydrofuran, and diisopropyl ether.

9p vironald 15-12-2022 8 2   Download

This study reports the 3 new phthalonitrile derivatives, namely 4, 5 Bis-[4-(4-bromophenoxy) phenoxy] phthalonitrile (1), 4,5 Bis-[4-(4-chlorophenoxy) phenoxy]phthalonitrile (2), and 4, 5 Bis[4-(4-fluorophenoxy) phenoxy] phthalonitrile (3). Their octasubstituted zinc phthalocyanines (4, 5, 6) are reported for the first time in this study. The resulting compounds were characterized by utilizing some spectroscopic methods, such as UV-Vis, 1 HNMR, FT-IR spectroscopy, as well as mass spectraand elemental analysis.

22p tudichquannguyet 29-11-2021 6 1   Download

To examine associations between occupational exposure to petroleum-based and oxygenated solvents and the risk of hypopharyngeal and laryngeal cancer.

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Acetone is an important solvent and widely used in the synthesis of drugs and polymers. Currently, acetone is mainly generated by the Cumene Process, which employs benzene and propylene as fossil raw materials. Phenol is a coproduct of this synthesis.

11p vijiraiya2711 27-05-2020 7 0   Download

Carotenoids are the valuable bio-active constituent of many fruits and vegetables and are the most abundant group of pigments which are responsible for the yellow-orange pigmentation. Carotenoids play a potential role in human body by protecting cells and tissues from the damaging effects of free radicals and singlet oxygen. Researchers have reported that carotenoids may provide a variety of potential health-promoting functions. Therefore, these pigments have been used in the prevention or protection against human health disorders.

8p nguaconbaynhay1 08-12-2019 21 0   Download

The methyl a-D-mannopyranoside molecule is bound in the Cl chair conformation 8.7 A from the calcium-binding site and 12.8 A from the transition metal-binding site. A network of seven hydrogen bonds connects oxygen atoms 0-3, 04, 0-5 and 0-6 of the mannoside to residues Asnl4, Leu99, TyrlO0, Asp208 and Arg228. 0-2 and 0-1 of the mannoside extend into the solvent. 0-2 is hydrogenbonded through a water molecule to an adjacent asymmetric unit.

5p byphasse043256 12-01-2019 19 2   Download

Water-quality engineering is a specialty area in environmental engineering that includes the subspecialties of water treatment, wastewater treatment, and water-quality control in natural systems. This textbook is intended to encompass the latter subspecialty, and the content of this book constitutes baseline knowledge expected of water-quality engineers and managers.

628p tiendat_cg 26-09-2013 82 15   Download

This review summarizes the most recent state of haemo-globin (Hb) research based on the literature and our own results. In particular, an attempt is made to form a unified picture for haemoglobin function by reconciling the cooperative oxygen binding with the stabilization of the bound dioxygen in aqueous solvent. The HbA molecule contains two types ofabcontacts. One type is thea1b2or a2b1 contacts, called sliding contacts, and these are strongly associated with the cooperative binding of O2to the a2b2 tetramer. ...

11p tumor12 20-04-2013 35 1   Download

UDP-glucose dehydrogenase catalyzes the NAD + -depend-ent twofold oxidation of UDP-glucose to give UDP-glucu-ronic acid. A sequestered aldehyde intermediate is produced in the first oxidation step and a covalently bound thioester is produced in the second oxidation step. This work demon-strates that theStreptococcus pyogenesenzyme incorporates a single solvent-derived oxygen atom during catalysis and probably does not generate an imine intermediate.

9p dell39 03-04-2013 45 2   Download