Category: 97-99-4

Cocq, Aurelien; Leger, Bastien; Noel, Sebastien; Bricout, Herve; Djedaini-Pilard, Florence; Tilloy, Sebastien; Monflier, Eric published the artcile< Anionic Amphiphilic Cyclodextrins Bearing Oleic Grafts for the Stabilization of Ruthenium Nanoparticles Efficient in Aqueous Catalytic Hydrogenation>, Name: (Tetrahydrofuran-2-yl)methanol, the main research area is oleic succinyl beta cyclodextrin ruthenium nanoparticle catalyst preparation; petrosource biosource unsaturated compound benzene furfural hydrogenation ruthenium catalyst.

Oleic succinyl β-cyclodextrin was proved to be efficient for the stabilization of ruthenium nanoparticles (NPs) in aqueous medium. The catalytic activity of these NPs was evaluated in the aqueous hydrogenation of petrosourced and biosourced unsaturated compounds such as benzene and furfural derivatives The catalytic system can be easily recycled and reused up to nine runs without any loss of activity and selectivity, demonstrating its robustness.

ChemCatChempublished new progress about Alcohols Role: SPN (Synthetic Preparation), PREP (Preparation). 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Name: (Tetrahydrofuran-2-yl)methanol.

Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Mironenko, Roman M.; Belskaya, Olga B.; Likholobov, Vladimir A. published the artcile< Approaches to the synthesis of Pd/C catalysts with controllable activity and selectivity in hydrogenation reactions>, Application In Synthesis of 97-99-4, the main research area is review palladium carbon hydrogenation catalyst.

A review. C-supported Pd catalysts are widely used for hydrogenation of various organic compounds in the fine chem. industry. The nanoscale geometry and electronic structure of supported Pd nanoparticles play a crucial role in providing the necessary catalytic properties. To improve catalytic activity and selectivity of Pd nanoparticles, it is possible to fine tune their intrinsic properties (e.g., size and oxidation state) by controlling the chem. transformations at different stages of catalyst preparation Recent years have seen considerable advancement in developing new catalyst preparation techniques as well as in understanding the mechanism of active site formation. This review summarizes some of the existing approaches to regulating the catalytic properties of C-supported Pd by variation of the C support, the composition of Pd precursor and its reduction conditions, as well as the addition of a 2nd active metal. The data presented may be useful for researchers developing efficient Pd/C catalysts for hydrogenation of polyfunctional organic compounds

Catalysis Todaypublished new progress about Carbon nanofibers Role: CAT (Catalyst Use), NAN (Nanomaterial), PEP (Physical, Engineering or Chemical Process), PRP (Properties), TEM (Technical or Engineered Material Use), USES (Uses), PROC (Process). 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Application In Synthesis of 97-99-4.

Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Silva, Wesley R.; Matsubara, Elaine Y.; Rosolen, Jose M.; Donate, Paulo M.; Gunnella, Roberto published the artcile< Pd catalysts supported on different hydrophilic or hydrophobic carbonaceous substrate for furfural and 5-(hydroxymethyl)furfural hydrogenation in water>, Reference of 97-99-4, the main research area is palladium catalyst carbonaceous substrate furfural hydroxymethylfurfural hydrogenation water.

We hydrogenated furfural and 5-(hydroxymethyl)furfural (HMF) in water in a reaction catalyzed by Pd nanoparticles on carbonaceous materials with different morphol. and hydrophobic degree. The different Pd catalysts were prepared by dipping the carbonaceous material into a Pd0 micro-emulsion. The catalyst support affected the catalytic hydrogenation of furfural and HMF. By using micrometric active carbon (AC) combined with cup-stacked carbon nanotubes (CSCNTs) and Pd0/2+ nanoparticles (Pd), we obtained a micro/nanostructured material designated Pd/CSCNT-AC, which performed better than the other carbonaceous materials containing similar Pd nanoparticle loading. Pd/CSCNT-AC produced tetrahydrofurfuryl alc. from furfural with excellent selectivity (>99%). Unlike Pd on hybrophobic spheroid graphite or hydrophilic AC, Pd/CSCNT-AC hydrogenated both the C=O and C=C double bonds of furfural and catalyzed HMF hydrogenation at the C=O double bond more selectively: between 85% and 99% selectivity toward 2,5-dihydroxymethylfuran. We also investigated how temperature, hydrogen pressure, and reaction time affected HMF hydrogenation in water. Finally, Pd/CSCNT-AC was recycled several times without significant catalytic activity loss.

Molecular Catalysispublished new progress about Carbon nanotubes. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Reference of 97-99-4.

Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Paraja, Miguel; Hao, Xiaoyu; Matile, Stefan published the artcile< Polyether Natural Product Inspired Cascade Cyclizations: Autocatalysis on π-Acidic Aromatic Surfaces>, Electric Literature of 97-99-4, the main research area is oligooxolane preparation; oligoepoxide preparation cascade ring opening cyclization autocatalysis kinetics; autocatalysis; cyclization; polyethers; synthetic methods; π interactions.

Anion-π catalysis functions by stabilizing anionic transition states on aromatic π surfaces, thus providing a new approach to mol. transformation. The delocalized nature of anion-π interactions suggests that they serve best in stabilizing long-distance charge displacements. Aiming therefore for an anionic cascade reaction that is as charismatic as the steroid cyclization is for conventional cation-π biocatalysis, reported here is the anion-π-catalyzed epoxide-opening ether cyclizations of oligomers. Only on π-acidic aromatic surfaces having a pos. quadrupole moment, such as hexafluorobenzene to naphthalenediimides, do these polyether cascade cyclizations proceed with exceptionally high autocatalysis (rate enhancements kauto/kcat >104 M-1). This distinctive characteristic adds complexity to reaction mechanisms (Goldilocks-type substrate concentration dependence, entropy-centered substrate destabilization) and opens intriguing perspectives for future developments.

Angewandte Chemie, International Editionpublished new progress about Autocatalysis. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Electric Literature of 97-99-4.

Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Liu, Wei; Yang, Yusen; Chen, Lifang; Xu, Enze; Xu, Jiaming; Hong, Song; Zhang, Xin; Wei, Min published the artcile< Atomically-ordered active sites in NiMo intermetallic compound toward low-pressure hydrodeoxygenation of furfural>, Application In Synthesis of 97-99-4, the main research area is nickel molybdenum intermetallic compound furfural hydrodeoxygenation catalyst.

Activation of oxygen-containing functional groups plays a key role in sustainable biomass upgrading and conversion. In this work, a NiMo intermetallic compound (IMC) catalyst was prepared based on layered double hydroxides (LDHs) precursors, which displayed prominent catalytic performance for furfural hydrodeoxygenation (HDO) to 2-methylfuran (2-MF) (yield: 99%) at a rather low hydrogen pressure (0.1 MPa), significantly superior to NiMo alloy, monometallic Ni and other Ni-based catalysts ever reported. CO-IR, STEM, EXAFS and XANES give direct evidences that the atomically-ordered Ni/Mo sites in NiMo IMC determine the uniform bridging-type adsorption mode of C=O bond in furfural while adsorption of furan ring is extremely suppressed. In situ FT-IR and DFT calculation further substantiate that ordered Ni-Mo bimetallic sites of IMC, in contrast to the random at. sequence in NiMo alloy, facilitate the activation and cleavage of C-OH bond in the intermediate (furfuryl alc., FOL), accounting for the production of 2-MF. This work demonstrates the decisive effect of atomically-ordered active sites in IMC catalyst on activation of oxygen-containing functional groups and product selectivity, which can be extended to catalytic upgrading of biomass-derived platform mols.

Applied Catalysis, B: Environmentalpublished new progress about Deoxidation. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Application In Synthesis of 97-99-4.

Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Tran, Luc-Sy; Carstensen, Hans-Heinrich; Lamoureux, Nathalie; Foo, Kae Ken; Gosselin, Sylvie; El Bakali, Abderrahman; Gasnot, Laurent; Desgroux, Pascale published the artcile< Exploring the Flame Chemistry of C5 Tetrahydrofuranic Biofuels: Tetrahydrofurfuryl Alcohol and 2-Methyltetrahydrofuran>, Name: (Tetrahydrofuran-2-yl)methanol, the main research area is flame chem C5 tetrahydrofuranic biofuels tetrahydrofurfuryl alc Methyltetrahydrofuran.

Recently, the combustion chem. of tetrahydrofurfuryl alc. (THFA), a potential biofuel, was investigated in a stoichiometric 20 mol % THFA/methane co-fueled premixed flame at 5.3 kPa by our group. With regard to this, we continue to further explore the combustion chem. of this biofuel to understand the influence of THFA-doping amounts on the flame chem. of its mixture with methane and the impact of the alc. function of THFA on the product spectrum compared to its non-alc. fuel counterpart, i.e., 2-methyltetrahydrofuran (MTHF). To accomplish the above said objective, a methane flame, a 10% THFA/methane flame, and a 20% MTHF/methane flame were addnl. analyzed at similar conditions using gas chromatog. for quant. species detection and NO laser-induced fluorescence thermometry. More than 40 species (reactants, CO, CO2, H2O, H2, and about 14 hydrocarbons as well as 26 oxygenated intermediates up to 5 carbon atoms) were quantified for each doped biofuel flame. The product distributions and consumption pathways of THFA are similar for the 10 and 20% THFA-doped flames. The maximum yields of most products increase linearly with the amount of doped THFA. However, some species do not follow this trend, indicating interaction chem. between methane and THFA, which is found to be mainly caused by the reaction of the Me radical. The difference in the chem. structure in THFA and MTHF has no notable impact on the mole fractions of CO, CO2, H2O, and H2, but significant differences exist for the yields of intermediate species. The doped THFA flame produces more aldehydes, alcs., and ethers but forms clearly less ketones and hydrocarbons. A slightly upgraded version of our previous kinetic model reproduces most exptl. data well and is able to explain the observed differences in intermediate production

Energy & Fuelspublished new progress about Alcohols Role: PRP (Properties), TEM (Technical or Engineered Material Use), USES (Uses). 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Name: (Tetrahydrofuran-2-yl)methanol.

Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Henschel, Henning; Andersson, Alfred T.; Jespers, Willem; Mehdi Ghahremanpour, Mohammad; van der Spoel, David published the artcile< Theoretical Infrared Spectra: Quantitative Similarity Measures and Force Fields>, Safety of (Tetrahydrofuran-2-yl)methanol, the main research area is IR spectrum similarity force field database.

IR spectroscopy can provide significant insight into the structures and dynamics of mols. of all sizes. The information that is contained in the spectrum is, however, often not easily extracted without the aid of theor. calculations or simulations. We present here the calculation of the IR spectra of a database of 703 gas phase compounds with four different force fields (CGenFF, GAFF-BCC, GAFF-ESP, and OPLS) using normal-mode anal. Modern force fields increasingly use virtual sites to describe, e.g., lone-pair electrons or the σ-holes on halogen atoms. This requires some adaptation of code to perform normal-mode anal. of such compounds,the implementation of which into the GROMACS software is briefly described as well. For the quant. comparison of the obtained spectra with exptl. reference data, we discuss the application of two different statistical correlation coefficients, Pearson and Spearman. The advantages and drawbacks of the different methods of comparison are discussed, and we find that both methods of comparison give the same overall picture, showing that present force field methods cannot match the performance of quantum chem. methods for the calculation of IR spectra.

Journal of Chemical Theory and Computationpublished new progress about Alcohols Role: PRP (Properties). 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Safety of (Tetrahydrofuran-2-yl)methanol.

Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Kumar, Abhinav; Srivastava, Rajendra published the artcile< Pd-Decorated Magnetic Spinels for Selective Catalytic Reduction of Furfural: Interplay of a Framework-Substituted Transition Metal and Solvent in Selective Reduction>, SDS of cas: 97-99-4, the main research area is selective reduction furfural palladium magnetic spinel.

The reduction of functional platform chems., such as furfural, to industrially important chems. and fuel requires precise modulation of surface reactivity of the catalyst to obtain the desired reactivity and selectivity. In this study, the selective reduction of furfural (FAL) to furfuryl alc. (FOL) and tetrahydrofurfuryl alc. (THFA) is achieved by the transition metal interplay in the framework structure of magnetic spinels Fe3O4 and by modulating the reaction medium. Herein, FAL is selectively and quant. reduced to FOL in water at very mild reaction conditions over Pd-decorated CuFe2O4, whereas FAL is selectively converted to THFA in hexane at mild reaction conditions over Pd-decorated NiFe2O4, using H2 as an economical reducing agent. The Pd loading, reaction temperature, H2 pressure, and reaction time are minimized to obtain the best selectivity toward THFA. Different modes of FAL adsorption occur on CuFe2O4 and NiFe2O4 surfaces. Dissociative adsorption of H2 occurs on Pd sites to form Pd-H species, followed by transfer hydrogenation from Pd-H to FAL adsorbed on spinels, leading to the formation of FOL or THFA. Efficient magnetic recyclability and the hot filtration test show that the catalyst exhibits no significant loss in the activity even after five recycles. Catalysts exhibit very high activity, selectivity, and low activation energy, which are very attractive for academic and industrial points of view.

ACS Applied Energy Materialspublished new progress about Activation energy. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, SDS of cas: 97-99-4.

Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Chuseang, Jirawat; Nakwachara, Rapeepong; Kalong, Munsuree; Ratchahat, Sakhon; Koo-amornpattana, Wanida; Klysubun, Wantana; Khemthong, Pongtanawat; Faungnawakij, Kajornsak; Assabumrungrat, Suttichai; Itthibenchapong, Vorranutch; Srifa, Atthapon team published the artcile< Selective hydrogenolysis of furfural into fuel-additive 2-methylfuran over a rhenium-promoted copper catalyst>, the main research area is furfural hydrogenation methylfuran rhenium copper catalyst phys chem property. Name: (Tetrahydrofuran-2-yl)methanol.

The effect of Re promoter on Cu/γ-Al2O3 catalysts with various Cu : Re molar ratios was comprehensively investigated in comparison to the monometallic Cu/γ-Al2O3 and Re/γ-Al2O3 catalysts. The combination of Re and Cu resulted in a difficulty in reduction behavior of the Cu species, as detected using hydrogen temperature-programmed reduction, indicating that the Re promoter had stronger metal-support interactions. The acidity, as confirmed by ammonia temperature-programmed desorption, increased with the Re loading. X-ray diffraction and X-ray absorption near edge structure measurements of the spent CuRe catalyst revealed the existence of metallic Cu, Cu2O, CuO, amorphous CuAl2O4, ReO3, and NH4ReO4. The as-synthesized catalysts without reduction were directly utilized for the hydrogenolysis of furfural (FAL) into the fuel additive 2-methylfuran (2-MF). The highest 2-MF yield (86.4%) was accompanied by a 10.4% 2-methyltetrahydrofuran (2-MTHF) yield using the optimal Cu1Re0.14 catalyst under the investigated conditions (200°C, 6 h, and 20 bar H2). The kinetic study using furfuryl alc. (FOL), a primary intermediate, revealed that the rate of 2-MF production for the optimal Cu1Re0.14 catalyst was faster than that of the Cu benchmark. These results indicated that a small amount of oxophilic Re species could promote the hydrogenolysis of the C-OH bond in FOL to form 2-MF due to the synergistic effect between the Cu and Re active species. In addition, the activity of the Cu1Re0.14 catalyst remained highly stable through four consecutive experiments

Sustainable Energy & Fuelspublished new progress about Adsorption; Crystallinity; Hydrogenation; Hydrogenation catalysts; Hydrogenation kinetics; Surface area; Surface structure; Thermal polymer degradation. 97-99-4 belongs to class tetrahydrofurans and the molecular formula is C5H10O2, Tetrahydrofuran – Wikipedia.

Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Application of 97-99-4, As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world. 97-99-4, Name is (Tetrahydrofuran-2-yl)methanol, SMILES is OCC1OCCC1, belongs to Tetrahydrofurans compound. In a article, author is Yuan, Xinqiang, introduce new discover of the category.

IDTI Dyes for Fluoride Anion Chemosensors

Fluoride anions play a key role in human health and chemical engineering, such as in organic synthesis and biological processes. The development of high-sensitivity naked-eye detection sensors for fluoride anions in organic solutions is crucial and challenging. In this study, (3Z,3 ‘ Z)-3,3 ‘-[4,4,9,9-tetrakis(4-hexylphenyl)-4,9-dihydro-s-indaceno(1,2-b:5,6-b ‘)dithiophene]-2,7-diylbis(methan-1-yl-1-ylidene) bis(6-bromo-indolin-2-one) (IDTI) was designed and used as a fluoride chemosensor for the first time. IDTI is a highly sensitive fluoride sensor with a detection limit of as low as 1 x 10(-7) M. In addition, upon the reaction of IDTI with fluoride anions in a tetrahydrofuran (THF) solution, color changes from red to yellow under ambient light and from purple to green under UV light were detectable by the naked eye. These studies indicate that IDTI is a promising fluoride chemosensor.

Application of 97-99-4, Consequently, the presence of a catalyst will permit a system to reach equilibrium more quickly, but it has no effect on the position of the equilibrium as reflected in the value of its equilibrium constant.I hope my blog about 97-99-4 is helpful to your research.

Reference:
Tetrahydrofuran – Wikipedia,
,Tetrahydrofuran | (CH2)3CH2O – PubChem