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1. Cyclic sulfur metabolites from Allium schoenoprasum var. foliosum

Author:
Fukaya, Masashi; Nakamura, Seikou; Kyoku, Yoshika; Nakashima, Souichi; Yoneda, Taichi; Matsuda, Hisashi
Source:
Phytochemistry letters 2019 v.29 pp. 125-128
ISSN:
1874-3900
Subject:
acetone,   etc   ; Allium schoenoprasum; dimethyl disulfide; metabolites; moieties; sulfur;     Show all 6 Subjects
Abstract:
... Three sulfur-containing cyclic compounds, folionins A1 (1), A2 (2), and B (3), were isolated from acetone extract of the whole plant of Allium schoenoprasum var. foliosum. Their chemical structures were determined by physicochemical methods. The compounds possess a 3, 4-dimethyltetrahydrothiophene moiety in common and a methyl disulfide or a propyl disulfide as side chain. This study aimed to dete ...
DOI:
10.1016/j.phytol.2018.11.018

2. Difluoroborate-based conjugated organic polymer: a high-performance heterogeneous photocatalyst for oxidative coupling reactions

Author:
Liu, Wanting; Wu, Shujie; Su, Qing; Guo, Bixuan; Ju, Pengyao; Li, Guanghua; Wu, Qiaolin
Source:
Journal of materials science 2019 v.54 no.2 pp. 1205-1212
ISSN:
0022-2461
Subject:
acetone,   etc   ; Lewis bases; condensation reactions; photocatalysis; photocatalysts; polymers; tetrahydroisoquinolines;     Show all 7 Subjects
Abstract:
... A photoactive difluoroborate-based conjugated organic polymer (B-COP) with A₃B₂-type donor–acceptor arrays in the polymer framework was synthesized by direct polycondensation and exhibited amorphous structure, high thermal and photophysical stability. The B-COP was shown to be a highly efficient heterogeneous photocatalyst for a wide range of photocatalytic transformations, including the oxidative ...
DOI:
10.1007/s10853-018-2893-0

3. Unexpected, photochemically induced activation of the tetrabutylammonium cation by hexachloroplatinate(iv)

Author:
Silalahi, Imelda H.; Sethi, Navpreet K.; Shafikov, Marsel Z.; Chechik, Victor; Whitwood, Adrian C.; Bruce, Duncan W.
Source:
Chemical communications 2018 v.54 no.97 pp. 13682-13685
ISSN:
1364-548X
Subject:
acetone,   etc   ; cations; photolysis; tetrabutylammonium compounds;     Show all 4 Subjects
Abstract:
... A dinuclear, butadiene-bridged complex, trans-μ²:η²,η²-1,3-butadiene-bis(trichloroplatinate(ii)) (1) was unexpectedly obtained on photolysis of acetone solutions of (NBu₄)₂[PtCl₆]. ...
DOI:
10.1039/c8cc06423g

4. An improving method for extracting total carotenoids in an aquatic animal Chlamys nobilis

Author:
Cheng, Dewei; Zhang, Yun; Liu, Hongxing; Zhang, Hongkuan; Tan, Karsoon; Ma, Hongyu; Li, Shengkang; Zheng, Huaiping
Source:
Food chemistry 2019 v.280 pp. 45-50
ISSN:
0308-8146
Subject:
acetone,   etc   ; Chlamys nobilis; aquatic animals; carotenoids; processing time; response surface methodology; temperature; ultrasonic treatment; ultrasonics;     Show all 9 Subjects
Abstract:
... In the present study, an improving method for extracting carotenoids in aquatic animals using ultrasound-assisted extraction (UAE) was developed. The theoretical optimum extraction condition (ultrasonic power, temperature and time of 246.77 W, 37.64 °C and 29.03 min, respectively) based on the maximum extracted total carotenoids content (TCC) (141.13 µg/g) was predicted by single-factor experiment ...
DOI:
10.1016/j.foodchem.2018.12.043

5. Extremely small amounts of B[a]P residues remobilised in long-term contaminated soils: A strong case for greater focus on readily available and not total-extractable fractions in risk assessment

Author:
Umeh, Anthony C.; Duan, Luchun; Naidu, Ravi; Semple, Kirk T.
Source:
Journal of hazardous materials 2019 v.368 pp. 72-80
ISSN:
0304-3894
Subject:
acetone,   etc   ; butanol; environmental health; methylene chloride; polluted soils; polycyclic aromatic hydrocarbons; risk assessment; saponification; solvents;     Show all 9 Subjects
Abstract:
... There is a lack of understanding about the potential for remobilisation of polycyclic aromatic hydrocarbons (PAHs) residues in soils, specifically after the removal of readily available fractions, and the likelihood to cause harm to human and environmental health. Sequential solvent extractions, using butanol (BuOH), dichloromethane/acetone, and methanolic saponification were used to investigate t ...
DOI:
10.1016/j.jhazmat.2019.01.030

6. NDMA formation mechanisms from typical hydrazines and hydrazones during ozonation: A computational study

Author:
Dong, Meng; Liu, Yong Dong; Zhong, Rugang
Source:
Journal of hazardous materials 2019 v.366 pp. 370-377
ISSN:
0304-3894
Subject:
acetone,   etc   ; N-nitrosodimethylamine; byproducts; carcinogenicity; disinfection; formaldehyde; hydrazine; hydrazones; hydrides; hydrogen; moieties; oxygen; ozonation; ozone;     Show all 14 Subjects
Abstract:
... N-nitrosodimethylamine (NDMA) as the most frequently detected disinfection by-product has aroused widespread concern due to its unusually high carcinogenicity, however, there is still limited understanding of its formation mechanisms. In this study, the formation mechanisms of NDMA from some typical hydrazines and hydrazones with high NDMA conversion yields (60%∼90%) during ozonation, i.e., unsymm ...
DOI:
10.1016/j.jhazmat.2018.12.012

7. MIL-PVDF blend ultrafiltration membranes with ultrahigh MOF loading for simultaneous adsorption and catalytic oxidation of methylene blue

Author:
Ren, Yi; Li, Ting; Zhang, Weiming; Wang, Shu; Shi, Mengqi; Shan, Chao; Zhang, Wenbin; Guan, Xiaohong; Lv, Lu; Hua, Ming; Pan, Bingcai
Source:
Journal of hazardous materials 2019 v.365 pp. 312-321
ISSN:
0304-3894
Subject:
acetone,   etc   ; adsorption; decontamination; iron; methylene blue; mixing; oxidation; permeability; porosity; separation; ultrafiltration; wastewater;     Show all 12 Subjects
Abstract:
... Multifunctional ultrafiltration membranes need to be further developed with ultrafiltration performance and high multifunctional decontamination efficiency. Here, the MIL-PVDF multifunctional ultrafiltration membrane with ultrahigh MIL loading was demonstrated by a new blending method of predispersion in acetone and thermally induced phase separation. Due to the improved dispersity and restriction ...
DOI:
10.1016/j.jhazmat.2018.11.013

8. Effects of liquefaction parameters of cellulose in supercritical solvents of methanol, ethanol and acetone on products yield and compositions

Author:
Wang, Xin; Xie, Xin-an; Sun, Jiao; Liao, Weiting
Source:
Bioresource technology 2019 v.275 pp. 123-129
ISSN:
0960-8524
Subject:
acetone,   etc   ; biofuels; cellulose; corn stover; esters; ethanol; liquefaction; methanol; solvents; temperature;     Show all 10 Subjects
Abstract:
... Cellulose extracted from cornstalk was liquefied in supercritical organic solvents at different liquefaction parameters. Different organic solvents (methanol, ethanol and acetone) were used to disintegrate cellulose at different temperatures (240, 260, 280, 300 and 320 °C), reaction time (0, 30, 60, 90 and 120 min) and solvents dosage (0, 80, 120, 160 and 200 mL). The results showed that similar l ...
DOI:
10.1016/j.biortech.2018.12.047

9. The use of filter bags in combination with an in vitro system to evaluate forage degradation in mixed substrates

Author:
Castro-Montoya, J.M.; Dickhoefer, U.
Source:
Animal feed science and technology 2019 v.249 pp. 46-53
ISSN:
0377-8401
Subject:
acetone,   etc   ; bags; corn silage; fatty acid composition; fermentation; forage; grass hay; short chain fatty acids;     Show all 8 Subjects
Abstract:
... The current study determined the effects of using ANKOM R510 filter bags for substrate incubation during in vitro fermentations using the ANKOM RF technique on gas production (GP, ml/g DM), truly degraded dry matter (TDDM, g/100 g), and total short chain fatty acids concentration (SCFA, μmol/ml). Maize silage and grass hay tested separately in combination with a concentrate mixture (70:30 ratio, d ...
DOI:
10.1016/j.anifeedsci.2019.01.014

10. Tunable copper-hydrotalcite derived mixed oxides for sustainable ethanol condensation to n-butanol in liquid phase

Author:
Benito, Patricia; Vaccari, Angelo; Antonetti, Claudia; Licursi, Domenico; Schiarioli, Nicola; Rodriguez-Castellón, Enrique; Raspolli Galletti, Anna Maria
Source:
Journal of cleaner production 2019 v.209 pp. 1614-1623
ISSN:
0959-6526
Subject:
acetone,   etc   ; aluminum; batch systems; biofuels; butanol; carbon; catalysts; catalytic activity; copper; ethanol; feedstocks; liquids; magnesium; oxides;     Show all 14 Subjects
Abstract:
... Improvement of processes starting from renewable feedstocks to produce chemicals and biofuels up to now derived from fossil carbon feedstocks is paramount to creating environmentally sustainable industrial processes. Guerbet condensation of ethanol to give n-butanol represents a turning point not only respect to the traditional petrochemical “oxo” process, but also to the bio-chemical path (Aceton ...
DOI:
10.1016/j.jclepro.2018.11.150

11. Ultrasensitive gas sensor based on hollow tungsten trioxide-nickel oxide (WO3-NiO) nanoflowers for fast and selective xylene detection

Author:
Gao, Hongyu; Yu, Qi; Chen, Ke; Sun, Peng; Liu, Fangmeng; Yan, Xu; Liu, Fengmin; Lu, Geyu
Source:
Journal of colloid and interface science 2019 v.535 pp. 458-468
ISSN:
0021-9797
Subject:
acetone,   etc   ; detection limit; ethanol; gases; microparticles; nanoflowers; nickel oxide; semiconductors; temperature; tungsten; xylene;     Show all 11 Subjects
Abstract:
... In this work, 5–20 at% gas-accessible WO3-NiO hollow nanoflowers were synthesized through a one-step hydrothermal route and used to fabricate metal oxide semiconductor (MOS) based gas sensor. The gas-accessible WO3-NiO hollow nanostructures showed much larger BET surface areas (168.0–203.8 m2 g−1) than that of the pure NiO (45.9 m2 g−1). In the comprehensive gas sensing test, the gas device based ...
DOI:
10.1016/j.jcis.2018.10.010

12. Pyroaurite‐based MgFe mixed oxides and their activity in aldol condensation of furfural with acetone: effect of oxide composition

Author:
Kocík, Jaroslav; Frolich, Karel; Perková, Ilona; Horáček, Jan
Source:
Journal of chemical technology and biotechnology 2019 v.94 no.2 pp. 435-445
ISSN:
0268-2575
Subject:
acetone,   etc   ; Lewis acids; catalytic activity; condensation reactions; furfural; magnesium; oxides; porous media; statistical analysis;     Show all 9 Subjects
Abstract:
... BACKGROUND: Pyroaurite‐based MgFe oxides with varying Mg:Fe ratio were studied. The structural and acido‐basic properties were examined by number of experimental techniques. The oxide properties were correlated with the catalytic activity in aldol condensation of furfural with acetone. RESULTS: Well‐developed mesoporous structure was detected for all oxides. Peculiar continuous increase of concen ...
DOI:
10.1002/jctb.5787

13. A novel and environmental friendly synthetic route for hydroxypyrrolidines using zeolites

Author:
Fan, A.; Chuah, G.K.; Jaenicke, Stephan
Source:
Carbohydrate research 2019 v.472 pp. 103-114
ISSN:
0008-6215
Subject:
acetone,   etc   ; aluminum; carbohydrates; catalysts; catalytic activity; hydrochloric acid; methanol; perchloric acid; silicon; synthesis; zeolites;     Show all 11 Subjects
Abstract:
... A critical step in the synthesis of the hydroxypyrrolidines, 1,4-dideoxy-1,4-imino-l-lyxitol and 1,4-dideoxy-1,4-imino-d-lyxitol, from the corresponding d-sugars is the synthesis of O-methyl 2,3-O-isopropylidenepentofuranoses. Instead of applying homogeneous catalysis process with conventional inorganic acid catalysts like HCl and HClO4, it was found that heterogeneous catalysis using zeolites cou ...
DOI:
10.1016/j.carres.2018.11.016

14. Conformational change due to intramolecular hydrophobic interaction leads to large blue-shifted emission from single molecular cage solutions

Author:
Li, Hui; Xie, Ting-Zheng; Liang, Zihao; Dahal, Dipendra; Shen, Yidan; Sun, Xinyu; Yang, Yuqing; Pang, Yi; Liu, Tianbo
Source:
Chemical communications 2019 v.55 no.3 pp. 330-333
ISSN:
1364-548X
Subject:
acetone,   etc   ; acetonitrile; chemical reactions; chemical structure; hydrophobic bonding; methanol; small-angle X-ray scattering; solvents; wavelengths;     Show all 9 Subjects
Abstract:
... We demonstrate a unique negative solvatochromic emission (NSE) process from a conformational change of a coordination cage in response to solvent composition. The cationic cage contains two tetra-(4-pyridylphenyl)ethylene (TPPE) luminogens on two opposite faces, linked by Pt(PEt₃)₂ and isophthalate. When the solvent changes from acetone/acetonitrile/methanol to water, the emission of single cages ...
DOI:
10.1039/c8cc09038f

15. Rapid volatiles fingerprinting by dopant-assisted positive photoionization ion mobility spectrometry for discrimination and characterization of Green Tea aromas

Author:
Li, Jia; Yuan, Haibo; Yao, Yuefeng; Hua, Jinjie; Yang, Yanqin; Dong, Chunwang; Deng, Yuliang; Wang, Jinjin; Li, Haiyang; Jiang, Yongwen; Zhou, Qinghua
Source:
Talanta 2019 v.191 pp. 39-45
ISSN:
0039-9140
Subject:
acetone,   etc   ; chemometrics; flavor; green tea; manufacturing; odors; process monitoring; sensory evaluation; spectroscopy;     Show all 9 Subjects
Abstract:
... Aroma is one major concern of tea flavor and represents an essential criterion for quality evaluation. Herein, we presented a novel approach for rapid, non-destructive and real-time fingerprinting of green tea aromas using ion mobility spectrometry (IMS) without prior sample treatment. Positive photoionization with acetone as dopant was selected as suitable source for tea volatiles analysis in com ...
DOI:
10.1016/j.talanta.2018.08.039

16. Acetone and Diethyl ether: Improve cold flow properties of Dairy Washed Milkscum biodiesel

Author:
Srikanth, H.V.; Venkatesh, J.; Godiganur, Sharanappa; Manne, Bhaskar
Source:
Renewable energy 2019 v.130 pp. 446-451
ISSN:
0960-1481
Subject:
acetone,   etc   ; biodiesel; crystallization; differential scanning calorimetry; ethyl ether; feedstocks; fluid mechanics; industrial wastes; milk; solvents; temperature;     Show all 11 Subjects
Abstract:
... The trend in utilizing biological industrial wastes to produce biofuels has been increasingly popular over the past decades. The dairy washed milk scum (DWMS) is one of such potential industrial waste, which can be used as feedstock for the production of biodiesel. One of the inherent problems of DWMS biodiesel is its poor low temperature properties. In this investigation, the influence of two sol ...
DOI:
10.1016/j.renene.2018.06.051

17. A mechanistic investigation on the electrocatalytic reduction of aliphatic ketones at platinum

Author:
Bondue, C.J.; Koper, M.T.M.
Source:
Journal of catalysis 2019 v.369 pp. 302-311
ISSN:
0021-9517
Subject:
acetone,   etc   ; Raman spectroscopy; adsorption; electrochemistry; electrodes; electrolytes; electron transfer; enols; hydrogen; hydrogenation; moieties; oxygen; platinum; tautomers;     Show all 14 Subjects
Abstract:
... In this paper we discuss the mechanism of the electrochemical hydrogenation of aliphatic ketones at platinum electrodes in aqueous acidic electrolytes. Based on the potential dependence of the measured reaction orders and on kinetic considerations, we derive that hydrogen competes with ketones for adsorption sites. Hence, hydrogen underpotential deposition (H-upd) exerts an inhibiting influence on ...
DOI:
10.1016/j.jcat.2018.11.019

18. Does silica solid-phase extraction of soil lipids isolate a pure phospholipid fraction?

Author:
Warren, Charles R.
Source:
Soil biology & biochemistry 2019 v.128 pp. 175-178
ISSN:
0038-0717
Subject:
acetone,   etc   ; betaine; chloroform; liquid chromatography; mass spectrometry; methanol; phospholipids; silica; soil; solid phase extraction;     Show all 10 Subjects
Abstract:
... Phospholipids are isolated from crude lipid extracts by silica solid phase extraction (SPE), but for soils we don't know if phospholipids are the only fatty acid-based lipids present in the polar lipid fraction. Lipids extracted from three soils were fractionated with a silica SPE protocol commonly used for soils, with “neutrals” eluted by chloroform, “glycolipids” eluted by acetone, and “phosphol ...
DOI:
10.1016/j.soilbio.2018.10.021

19. Multi-objective exergoeconomic and exergoenvironmental optimization of continuous synthesis of solketal through glycerol ketalization with acetone in the presence of ethanol as co-solvent

Author:
Aghbashlo, Mortaza; Hosseinpour, Soleiman; Tabatabaei, Meisam; Rastegari, Hajar; Ghaziaskar, Hassan S.
Source:
Renewable energy 2019 v.130 pp. 735-748
ISSN:
0960-1481
Subject:
acetone,   etc   ; algorithms; catalysts; environmental impact; equations; ethanol; exergy; fuzzy logic; glycerol; renewable energy sources; temperature;     Show all 11 Subjects
Abstract:
... This work was aimed at conducting a multi-objective exergoeconomic and exergoenvironmental optimization of continuous synthesis of solketal through glycerol ketalization with acetone in the presence of ethanol as co-solvent and Purolite PD206 as catalyst. Exergoeconomic and exergoenvironmental performance parameters of the reactor were computed and discussed comprehensively after writing and solvi ...
DOI:
10.1016/j.renene.2018.06.103

20. Mid-Infrared Chalcogenide Waveguides for Real-Time and Nondestructive Volatile Organic Compound Detection

Author:
Jin, Tiening; Zhou, Junchao; Lin, Hao-Yu Greg; Lin, Pao Tai
Source:
Analytical chemistry 2018 v.91 no.1 pp. 817-822
ISSN:
1520-6882
Subject:
acetone,   etc   ; ethanol; monitoring; vapors; volatile organic compounds;     Show all 5 Subjects
Abstract:
... A mid-infrared (mid-IR) sensor chip was demonstrated for volatile organic compound (VOC) detection. The sensor consisted of As₂Se₃ optical waveguides built by microelectronic fabrication processes. The VOC sensing performance was characterized by measuring acetone and ethanol vapors at their characteristic C–H absorption from λ = 3.40 to 3.50 μm. Continuous VOC detection with <5 s response time wa ...
DOI:
10.1021/acs.analchem.8b03004