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1. Correction: Pentanoic acid from γ-valerolactone and formic acid using bifunctional catalysis

Author:
Al-Naji, Majd; Aelst, Joost Van; Liao, Yuhe; d'Halluin, Martin; Tian, Zhipeng; Wang, Chenguang; Gläser, Roger; Sels, Bert F.
Source:
Green chemistry 2020 v.22 no.2 pp. 564
ISSN:
1463-9270
Subject:
formic acid,   etc   ; catalytic activity; green chemistry; lactones;     Show all 4 Subjects
Abstract:
... Correction for ‘Pentanoic acid from γ-valerolactone and formic acid using bifunctional catalysis’ by Majd Al-Naji, et al., Green Chem., 2020, DOI: 10.1039/c9gc02627d. ...
DOI:
10.1039/c9gc90122a

2. Nano volume fractionation strategy for dilute-and-shoot injections in off-line loss-less proteomic workflows for extensive protein identifications of ultra-low sample amounts

Author:
Reubsaet, Léon; Sweredoski, Michael J.; Moradian, Annie; Lomenick, Brett; Eggleston-Rangel, Roxana; Garbis, Spiros D.
Source:
Journal of chromatography 2020 v.1609 pp. 460507
ISSN:
0021-9673
Subject:
formic acid,   etc   ; acetonitrile; chromatography; drying; fractionation; hydrophobicity; pH; peptides; proteomics;     Show all 9 Subjects
Abstract:
... A proteomic workflow for a simple loss-less manual nano-fractionation (300 nL/fraction) for low µg sample amounts which avoids the need to dry down or transfer fractions to autosampler vials is shown to be feasible. It is demonstrated that the conventional procedure of drying samples down followed by reconstitution negatively affects the number of protein and peptide identifications. Furthermore, ...
DOI:
10.1016/j.chroma.2019.460507

3. Catalyst design for highly efficient carbon dioxide hydrogenation to formic acid under buffering conditions

Author:
Weilhard, Andreas; Salzmann, Kevin; Navarro, Miquel; Dupont, Jairton; Albrecht, Martin; Sans, Victor
Source:
Journal of catalysis 2020 v.385 pp. 1-9
ISSN:
0021-9517
Subject:
formic acid,   etc   ; acidification; carbon dioxide; catalysts; catalytic activity; hydrogenation; ionic liquids; ligands; reaction mechanisms; ruthenium;     Show all 10 Subjects
Abstract:
... We report on new ruthenium complexes as catalysts for the efficient transformation of CO₂ into formic acid employing basic ionic liquids as buffering media. Remarkably, these complexes catalyze the hydrogenation of CO₂ selectively and without employing strong bases, which improves the sustainability of the process when compared to common base-mediated technologies. The molecular catalyst design re ...
DOI:
10.1016/j.jcat.2020.02.027

4. One-pot selective production of levulinic acid and formic acid from spent coffee grounds in a catalyst-free biphasic system

Author:
Kim, Bora; Yang, Jeongwoo; Kim, Minji; Lee, Jae W.
Source:
Bioresource technology 2020 v.303 pp. 122898
ISSN:
0960-8524
Subject:
formic acid,   etc   ; ethylene dichloride; humin; hydrogen; levulinic acid; lipids; monosaccharides; spent coffee grounds; temperature;     Show all 9 Subjects
Abstract:
... This study introduces the catalyst-free production of levulinic acid (LA) and formic acid (FA) from spent coffee grounds (SCGs) as a starting material in a biphasic system of 1,2-dichloroethane (DCE)-water at temperatures above 160 °C. In addition to the advantage of using the biphasic system attributed to the product equilibrium, DCE served as a source of hydrogen induced by subcritical water (SC ...
DOI:
10.1016/j.biortech.2020.122898

5. Analysis of complex mixtures of polyglycerol fatty esters using liquid chromatography and high-resolution mass spectrometry: Retention, structural and relative composition study

Author:
Garrigues, Jean-Christophe; Cournac, Marion; Oswald, Marlène; Ritter, Nicolas; Blanzat, Muriel; Cassel, Stéphanie
Source:
Journal of chromatography 2020 v.1616 pp. 460792
ISSN:
0021-9673
Subject:
formic acid,   etc   ; acetonitrile; databases; esterification; esters; fatty acids; high performance liquid chromatography; isomers; mass spectrometry; models;     Show all 10 Subjects
Abstract:
... Polyglycerol esters (PGEs), produced by esterification of fatty acids on polyglycerols, were analysed by High Resolution Mass Spectrometry (HRMS), HPLC-MS and U-HPLC-MS. A structural study of PGEs in 4 samples synthesised by the Gattefossé company was carried out using an elemental analysis of HRMS spectra and modelling of all probable isomers and cyclic structures. The results were used to constr ...
DOI:
10.1016/j.chroma.2019.460792

6. Elementary steps and site requirements in formic acid dehydration reactions on anatase and rutile TiO2 surfaces

Author:
Kwon, Stephanie; Lin, Ting Chun; Iglesia, Enrique
Source:
Journal of catalysis 2020 v.383 pp. 60-76
ISSN:
0021-9517
Subject:
formic acid,   etc   ; catalysts; catalytic activity; formates; isotopes; protons; spectroscopy; stoichiometry; temperature; titanium dioxide;     Show all 10 Subjects
Abstract:
... Mechanistic details of HCOOH decomposition routes provide valuable insights into reactions involving bound formates as intermediates or spectators; these routes are also widely used as a probe of the acid-base properties of oxide surfaces. The identity and kinetic relevance of bound intermediates, transition states, and elementary steps are reported here for HCOOH dehydration on anatase and rutile ...
DOI:
10.1016/j.jcat.2019.12.043

7. The combined effect of formic acid and Nisin on potato spoilage

Author:
Ajingi, Ya'u Sabo; Ruengvisesh, Songsirin; Khunrae, Pongsak; Rattanarojpong, Triwit; Jongruja, Nujarin
Source:
Biocatalysis and agricultural biotechnology 2020 v.24 pp. 101523
ISSN:
1878-8181
Subject:
formic acid,   etc   ; Bacillus subtilis; antibacterial properties; bacteria; color; food spoilage; nisin; potatoes; spoilage; storage temperature; synergism;     Show all 11 Subjects
Abstract:
... This research has been conducted to investigate the efficacy of formic acid in combination with Nisin against Bacillus subtilis on a potato. To our knowledge, no investigation has evaluated the antimicrobial effectiveness of formic acid in combination with Nisin against Bacillus subtilis in the prevention of potato spoilage, including color changes. Nisin and formic acid inhibited the spoilage org ...
DOI:
10.1016/j.bcab.2020.101523

8. Vapor–liquid and chemical equilibria model for formaldehyde–trioxane–sulfuric acid–water mixtures

Author:
Jiang, Siqi; Zhang, Xianming; Hu, Yufeng; Yin, Liuyi; Qi, Jianguang; Ren, Chunxiao; Mo, Shuqin
Source:
Journal of chemical technology and biotechnology 2020 v.95 no.3 pp. 719-729
ISSN:
0268-2575
Subject:
formic acid,   etc   ; byproducts; catalysts; catalytic activity; distillation; energy; formaldehyde; models; prediction; separation; sulfuric acid;     Show all 11 Subjects
Abstract:
... BACKGROUND: Trioxane (C₃H₆O₃) is industrially produced from aqueous formaldehyde (HCHO) solutions through catalytic distillation catalyzed by sulfuric acid (H₂SO₄). Optimizing industrial process of the synthesis and developing new catalysts require a reliable model for the vapor–liquid equilibria in reaction mixture HCHO–C₃H₆O₃–H₂SO₄– H₂O and a deep understanding of the role of H₂SO₄ in the indust ...
DOI:
10.1002/jctb.6254

9. Wettability, interfacial reactions, and impact strength of Sn–3.0Ag–0.5Cu solder/ENIG substrate used for fluxless soldering under formic acid atmosphere

Author:
He, Siliang; Gao, Runhua; Shen, Yu-An; Li, Jiahui; Nishikawa, Hiroshi
Source:
Journal of materials science 2020 v.55 no.7 pp. 3107-3117
ISSN:
0022-2461
Subject:
formic acid,   etc   ; environmental impact; gold; impact strength; melting; microstructure; nickel; packaging; rosin; soldering; wettability;     Show all 11 Subjects
Abstract:
... Fluxes have a negative impact on the environment; as a result, fluxless soldering has become a promising method in electronic packaging. However, detailed studies on fluxless soldering are very rare, especially those involving the use of electroless nickel immersion gold (ENIG) substrate under formic acid (FA) atmosphere that can effectively reduce the majority of solders. In this work, the charac ...
DOI:
10.1007/s10853-019-04153-9

10. Formic Acid Synthesis in a Water–Mineral System: Major Role of the Interface

Author:
Laporte, Sara; Pietrucci, Fabio; Guyot, François; Saitta, A. Marco
Source:
Journal of physical chemistry 2020 v.124 no.9 pp. 5125-5131
ISSN:
1932-7455
Subject:
formic acid,   etc   ; carbon monoxide; catalytic activity; electric field; magnesium oxide; molecular dynamics; sampling; thermodynamics;     Show all 8 Subjects
Abstract:
... Mineral surfaces are known for their catalytic properties, as they have lower kinetic barriers to reactions and modify chemical equilibria. Using ab initio molecular dynamics and enhanced sampling methods, we predict that the MgO(001)–water interface thermodynamically favors the formation of formic acid from carbon monoxide and water. This occurs despite the lack of direct participation from the s ...
DOI:
10.1021/acs.jpcc.9b09979

11. The short- and long-term effects of formic acid on rapid nitritation start-up

Author:
Wang, Ji-peng; Liu, Yong-di; Meng, Fan-gang; Li, Wei
Source:
Environment international 2020 v.135 pp. 105350
ISSN:
0160-4120
Subject:
formic acid,   etc   ; activated sludge; ammonia; bacteria; batch systems; long term effects; nitrification; nitrites;     Show all 8 Subjects
Abstract:
... The feasibility of achieving stable nitritation inoculating with activated sludge by adding formic acid was studied in this work. Short-term batch effects of formic acid on nitrification showed that the nitrite accumulation ratio (NAR) significantly increased from 0.3% to 83.7% with an increase of formic acid concentration from 0 to 50 mM at an initial ammonia concentration of 75 mg·L⁻¹, which was ...
DOI:
10.1016/j.envint.2019.105350

12. Palladium-Catalyzed Carbonylative Synthesis of α-Branched Enones from Aryl Iodides and Arylallenes

Author:
Geng, Hui-Qing; Wang, Le-Cheng; Hou, Chen-Yang; Wu, Xiao-Feng
Source:
Organic letters 2020 v.22 no.3 pp. 1160-1163
ISSN:
1523-7052
Subject:
formic acid,   etc   ; carbon monoxide; catalytic activity; chemical reactions; chemical structure; organoiodine compounds; palladium; reducing agents;     Show all 8 Subjects
Abstract:
... In this communication, an interesting carbonylation protocol for the preparation of α-branched enones has been established. Starting from readily available aryl iodides and allenes, with formic acid as the CO source and reductant, moderate to good yields of the desired enones were isolated. Although it is a carbonylation methodology, the use of a CO source can avoid the manipulation of CO gas dire ...
DOI:
10.1021/acs.orglett.0c00015

13. Experimental study on gasification performance of polypropylene (PP) plastics in supercritical water

Author:
Bai, Bin; Wang, Weizuo; Jin, Hui
Source:
Energy 2020 v.191 pp. 116527
ISSN:
0360-5442
Subject:
formic acid,   etc   ; aromatization; carbon; feedstocks; gasification; microplastics; models; polypropylenes; quartz; response surface methodology; seawater; temperature;     Show all 12 Subjects
Abstract:
... In this paper, the gasification performance of polypropylene (PP) plastics in supercritical water was investigated using a quartz tube reactor. A gasification model was demonstrated to reveal the gasification path. Different gasification models were compared to improve gasification efficiency. The response surface methodology (RSM) was employed to find the optimal gasification condition. Moreover, ...
DOI:
10.1016/j.energy.2019.116527

14. A comprehensive investigation of the peak capacity for the reversed-phase gradient liquid-chromatographic analysis of intact proteins using a polymer-monolithic capillary column

Author:
Fernández-Pumarega, Alejandro; Dores-Sousa, José Luís; Eeltink, Sebastiaan
Source:
Journal of chromatography 2020 v.1609 pp. 460462
ISSN:
0021-9673
Subject:
formic acid,   etc   ; mass transfer; molecular weight; proteins; reversed-phase liquid chromatography; scanning electron microscopy; uracil;     Show all 7 Subjects
Abstract:
... The present study reports on the analysis of different factors affecting the magnitude of the peak capacity for intact protein separations conducted in gradient reversed-phase liquid chromatography. Experiments were conducted using a 200 µm i.d. capillary styrene-co-divinylbenzene monolithic column that was developed in-house and was characterized by a mode globule cluster size of 1.2 µm and a mod ...
DOI:
10.1016/j.chroma.2019.460462

15. Correction: Effects of water, ammonia and formic acid on HO₂ + Cl reactions under atmospheric conditions: competition between a stepwise route and one elementary step

Author:
Zhang, Tianlei; Zhang, Yongqi; Wen, Mingjie; Tang, Zhuo; Long, Bo; Yu, Xiaohu; Zhao, Caibin; Wang, Wenliang
Source:
RSC advances 2019 v.9 no.40 pp. 22987
ISSN:
2046-2069
Subject:
formic acid,   etc   ; ammonia; chemical reactions; water;     Show all 4 Subjects
Abstract:
... Correction for ‘Effects of water, ammonia and formic acid on HO₂ + Cl reactions under atmospheric conditions: competition between a stepwise route and one elementary step’ by Tianlei Zhang et al., RSC Adv., 2019, 9, 21544–21556. ...
DOI:
10.1039/c9ra90058f

16. A mechanistic study of B₃₆-supported atomic Au promoted CO₂ electroreduction to formic acid

Author:
Li, Wen-Ying; Zhao, Xiang; Dang, Jing-Shuang
Source:
Journal of materials chemistry A 2019 v.7 no.23 pp. 13935-13940
ISSN:
2050-7496
Subject:
formic acid,   etc   ; carbon dioxide; catalysts; electrochemistry; gold;     Show all 5 Subjects
Abstract:
... We introduce a single-atom catalyst in which atomic gold resides in the corner sites of a recently discovered B₃₆ cluster. By means of quantum chemistry calculations, we propose that B₃₆Au is capable of adsorbing CO₂ and promoting a highly active and selective CO₂ reduction process to form HCOOH, with a tiny electrochemical limiting potential of −0.08 V. ...
DOI:
10.1039/c9ta03983j

17. Comprehensive tropane alkaloids analysis and retrospective screening of contaminants in honey samples using liquid chromatography-high resolution mass spectrometry (Orbitrap)

Author:
Romera-Torres, Ana; Romero-González, Roberto; Martínez Vidal, José Luis; Garrido Frenich, Antonia
Source:
Food research international 2020 v.133 pp. 109130
ISSN:
0963-9969
Subject:
formic acid,   etc   ; carbon; herbicides; honey; insecticides; liquid chromatography; magnesium sulfate; mass spectrometry; methanol; scopolamine; screening; solvents; standard deviation; veterinary drugs;     Show all 14 Subjects
Abstract:
... A wide-scope analytical method was developed and validated for the determination of tropane alkaloids (TAs) in honey samples. A simple and fast extraction procedure, using a mixture of methanol/water/formic acid (75/25/0.4, v/v/v) as extraction solvent, followed by a clean-up with graphitized black carbon (GBC) and magnesium sulphate was optimized, and compounds were analysed by liquid chromatogra ...
DOI:
10.1016/j.foodres.2020.109130

18. Quantifications of saxitoxin concentrations in bivalves by high performance liquid chromatography-tandem mass spectrometry with the purification of immunoaffinity column

Author:
Yue, Yajun; Zhu, Bo; Lun, Lili; Xu, Na
Source:
Journal of chromatography 2020 v.1147 pp. 122133
ISSN:
1570-0232
Subject:
formic acid,   etc   ; Bivalvia; acetonitrile; ammonium; high performance liquid chromatography; phosphates; saxitoxins; solid phase extraction; tandem mass spectrometry;     Show all 9 Subjects
Abstract:
... In this study, saxitoxin (STX) immunoaffinity column (IAC) solid phase extraction (SPE) technology was used to extract and purify STX in bivalve aquatic products. By optimizing the conditions of sample pretreatment, the method of detecting STX in bivalve aquatic products had been established by high performance liquid chromatograph-tandem mass spectrometry (LC-MS/MS) based on the cleanup of SPE wi ...
DOI:
10.1016/j.jchromb.2020.122133

19. Complete dechlorination of lindane over N-doped porous carbon supported Pd catalyst at room temperature and atmospheric pressure

Author:
Yang, Jirui; Qi, Xinhua; Shen, Feng; Qiu, Mo; Smith, Richard Lee
Source:
The Science of the total environment 2020 v.719 pp. 137534
ISSN:
0048-9697
Subject:
formic acid,   etc   ; ambient temperature; atmospheric pressure; benzene; carbon; catalysts; catalytic activity; cyclohexanes; dechlorination; hydrogen; hydrogenation; lindane; nanoparticles; palladium; pollutants; wastewater;     Show all 16 Subjects
Abstract:
... Transfer hydrogenation is highly effective for dechlorinating priority organic pollutants in wastewater. Lindane could be completely dechlorinated at room temperature and atmospheric pressure via transfer hydrogenation, in which Pd (3.1 wt%) supported on chitosan-derived porous carbon (3.1Pd@A600) and formic acid (FA) were used as catalyst and hydrogen source, respectively. Favorable catalytic act ...
DOI:
10.1016/j.scitotenv.2020.137534

20. Development of ion pairing LC-MS/MS method for itaconate and cis-aconitate in cell extract and cell media

Author:
Tan, Bo; Malu, Shruti; Roth, Kenneth D.
Source:
Journal of chromatography 2020 v.1146 pp. 122120
ISSN:
1570-0232
Subject:
formic acid,   etc   ; amines; decarboxylation; derivatization; genes; high performance liquid chromatography; interferon-gamma; lipopolysaccharides; macrophages; methanol; tandem mass spectrometry;     Show all 11 Subjects
Abstract:
... Accumulation of Immune Responsive Gene 1(IRG1) in macrophage induced by lipopolysaccharide (LPS) and interferon gamma (IFN-γ) leads to production of itaconate by decarboxylation of cis-aconitate. The biology associated with IRG1 and itaconate is not fully understood. A rapid and sensitive method for measurement of itaconate will benefit the study of IRG1 biology. Multiple HPLC and derivatization m ...
DOI:
10.1016/j.jchromb.2020.122120