Category: 97-99-4

Kuang, Bifeng; Zhang, Qian; Fang, Yanxiong; Bai, Yong; Qiu, Songbai; Wu, Ping; Qin, Yanlin; Wang, Tiejun published the artcile< Ring Opening of Cyclic Ether for Selective Synthesis of Renewable 1,5-Pentanediol over Pt/WO3@SiO2 Catalysts>, HPLC of Formula: 97-99-4, the main research area is ring opening catalyst cyclic ether renewable pentanediol.

In this paper, the WO3-embedded in mesoporous SiO2 framework (WO3@SiO2) was developed using facile modified sol-gel, and was further applied as the support of Pt/WO3@SiO2 catalysts during impregnation. The ring-opening of cyclic ether such as biomass-derived tetrahydrofurfuryl alc. (THFA), for selective synthesis of renewable 1, 5-pentanediol (1, 5-PeD), was efficiently accomplished over Pt/WO3@SiO2 catalysts. This special nanocomposite structure provided both abundant active sites and strong synergetic coupling, thus significantly boosting the catalytic performances. The effects of reaction parameters were also investigated on the catalytic performances, including W/Si molar ratio, reaction time, reaction temperature and reduction temperature The high THFA conversion of 82.9% and 1, 5-PeD selectivity of 72.9% were achieved under the optimized reaction conditions. The preliminary characterization results suggested that the Bronsted acid sites of HxWO3 species with proper acid amounts played an important role in controlling the selective ring-opening of THFA cyclic ether towards 1, 5-PeD.

Industrial & Engineering Chemistry Research published new progress about Biomass. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, HPLC of Formula: 97-99-4.

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

Gao, Rui; Li, Xiang; Guo, Lingyun; Tong, Zhikun; Deng, Qiang; Wang, Jun; Zeng, Zheling; Zou, Ji-Jun; Deng, Shuguang published the artcile< Pyrochlore/Al2O3 composites supported Pd for the selective synthesis of cyclopentanones from biobased furfurals>, Application of C5H10O2, the main research area is pyrochlore alumina supported palladium catalyst cyclopentanones biobased furfural.

Designing a bifunctional catalyst with both highly selective C=O hydrogenation ability and Lewis acid-catalyzed ring-rearrangement ability is highly important for the synthesis of the cyclopentanone motifs from furfural derivatives Herein, a class of pyrochlore/Al2O3 composites (2.68 wt%Y2(Sn0.65Al0.35)2O7-δ/Al2O3, 7.74 wt%Y2(Sn0.65Al0.35)2O7-δ/Al2O3) with a onefold Lewis acidity and rich oxygen defects were synthesized via a dissolution-precipitation method. After the impregnation by Pd nanoparticles, the oxygen defect of pyrochlore/Al2O3 shows a bifunctional effect: they can adsorb C=O, promoting the selective C=O hydrogenation step and can enhance the accessibility of coordinatively unsaturated metal ions, providing Lewis acidic sites for the ring-rearrangement step. The composite-based catalysts show noticeably higher hydrogenation and hydrolysis rates than their corresponding single metal oxide-based catalysts (Pd/Al2O3, Pd/Y2Sn2O7). Finally, 7.74 wt%Y2(Sn0.65Al0.35)2O7-δ/Al2O3 shows a cyclopentanone yield of 98.1% and a 3-hydroxymethyl cyclopentanone yield of 90.6%. ATR-IR results verify the catalytic mechanism and emphasize the importance of oxygen defects.

Applied Catalysis, A: General published new progress about Acidity. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Application of C5H10O2.

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

Ruan, Luna; Pei, An; Liao, Jianhua; Zeng, Li; Guo, Guangrong; Yang, Kai; Zhou, Qin; Zhao, Ning; Zhu, Lihua; Chen, Bing Hui published the artcile< Nitrogen-doped carbon nanotubes-supported PdNiCo nanoparticles as a highly efficient catalyst for selective hydrogenation of furfural>, Synthetic Route of 97-99-4, the main research area is furfural selective hydrogenation catalyst.

Nitrogen-doped carbon nanotubes (N-CNTs) was synthesized via covalent functionalization, and the monometallic (Pd/CNTs, Pd/N-CNTs), bimetallic (NiCo/CNTs, NiCo/N-CNTs, PdNi/CNTs, PdCo/CNTs, PdNi/N-CNTs, PdCo/N-CNTs) and trimetallic (PdNiCo/CNTs, PdNiCo/N-CNTs) catalysts were prepared by simple liquid chem. reduction The catalytic performance of as-obtained catalysts was evaluated by furfural hydrogenation. The properties of electron and surface active sites and nanostructures of as-prepared catalysts were characterized. And the relationship between the above-mentioned characteristic textures and catalytic performance of as-synthesized catalysts was further discussed and established. 97.1% Selectivity to tetrahydrofurfuryl alc. could be obtained over PdNiCo/N-CNTs (furfural conversion-100%), but tetrahydrofurfuryl alc. selectivity was only 41.8% when using PdNiCo/CNTs. This investigation confirmed that the catalytic performance of PdNiCo/N-CNTs was much more excellent than other catalysts mainly due to its own PdNiCo alloy nanostructure and the electronic synergy effect between PdNiCo metallic nanoparticles and N-CNTs. Furthermore, there were much weaker basic sites in PdNiCo/N-CNTs, which greatly increased its catalytic properties.

Fuel published new progress about Hydrogenation. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Synthetic Route of 97-99-4.

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

Bakharev, Vladimir V.; Gidaspov, Alexander A.; Zalomlenkov, Vladimir A.; Parfenov, Victor E.; Golovina, Olga V.; Slepukhin, Pavel A. published the artcile< Opening of the 1,3,5-triazine ring in 3-methyl-5-(trinitromethyl)tetrazolo[1,5-a][1,3,5]triazin-7-one by the action of alcohols>, Product Details of C5H10O2, the main research area is tetrazolotriazinone ring opening alc.

It was shown for the first time that in the reaction of 3-methyl-5-(trinitromethyl)tetrazolo[1,5-a][1,3,5]triazin-7-one with alcs. in the presence of bases, along with the expected substitution of the trinitromethyl group, opening of the 1,3,5-triazine ring with the addition of an alc. at the site of the C-N bond cleavage takes place. It was found that in the absence of bases only opening of the 1,3,5-triazine ring occurs with the formation of alkyl esters of {1-[(1-methyl-1H-tetrazol-5-yl)imino]-2,2,2-trinitroethyl}carbamic acid, and the trinitromethyl group retains high reactivity and can be substituted by the action of alcs. in the presence of a base.

Chemistry of Heterocyclic Compounds (New York, NY, United States) published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Product Details of C5H10O2.

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

Fovanna, Thibault; Campisi, Sebastiano; Villa, Alberto; Kambolis, Anastasios; Peng, Gael; Rentsch, Daniel; Krocher, Oliver; Nachtegaal, Maarten; Ferri, Davide published the artcile< Ruthenium on phosphorous-modified alumina as an effective and stable catalyst for catalytic transfer hydrogenation of furfural>, Electric Literature of 97-99-4, the main research area is ruthenium phosphorus modified alumina catalyst preparation furfural hydrogenation.

Supported ruthenium was used in the liquid phase catalytic transfer hydrogenation of furfural. To improve the stability of Ru against leaching, phosphorus was introduced on a Ru/Al2O3 based catalyst upon impregnation with ammonium hypophosphite followed by either reduction or calcination to study the effect of phosphorus on the physico-chem. properties of the active phase. Characterization using X-ray diffraction, solid state 31P NMR spectroscopy, X-ray absorption spectroscopy, temperature programmed reduction with H2, IR spectroscopy of pyridine adsorption from the liquid phase and transmission electron microscopy indicated that phosphorus induces a high dispersion of Ru, promotes Ru reducibility and is responsible for the formation of acid species of bronsted character. As a result, the phosphorus-based catalyst obtained after reduction was more active for catalytic transfer hydrogenation of furfural and more stable against Ru leaching under these conditions than a benchmark Ru catalyst supported on activated carbon.

RSC Advances published new progress about Calcination. 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

Tang, Feiying; Wang, Liqiang; Dessie Walle, Maru; Mustapha, Abdulhadi; Liu, You-Nian published the artcile< An alloy chemistry strategy to tailoring the d-band center of Ni by Cu for efficient and selective catalytic hydrogenation of furfural>, Category: tetrahydrofurans, the main research area is nickel copper alloy catalyst furfural hydrogenation morphol textural property.

Nickel is a promising catalyst for the hydrogenation of furfural (FA) into furfuryl alc. (FOL) and tetrahydrofurfuryl alc. (TFOL). However, slow H* desorption and low catalytic selectivity limit its practical application. Herein, we employed an alloying strategy to tailoring the d-band center of Ni by Cu for efficient and selective catalytic hydrogenation of furfural. A series of Ni-Cu alloy catalysts (NiCux/C) were prepared by pyrolyzing NiCux-BTC (a MOF containing Cu and Ni) precursors. Theor. calculation demonstrates that Ni exhibits a downshifted d-band center once alloyed by Cu. This change can not only promote the desorption of H from Ni surface to improve the catalytic activity but also thermodynamically favor the transformation of adsorption orientation of FA (from a flat orientation on Ni to a tilted one on Ni-Cu alloy) to enable the selective conversion of FA into FOL or TFOL on demand. NiCu0.33/C catalyst exhibits enhanced activity and selectivity for FA hydrogenation compared to pure Ni and Cu.

Journal of Catalysis published new progress about Density of states. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Category: tetrahydrofurans.

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

Yeh, Jyun-Yi; Matsagar, Babasaheb M.; S. Chen, Season; Sung, Hsiang-Ling; Tsang, Daniel C. W.; Li, Yi-Pei; Wu, Kevin C.-W. published the artcile< Synergistic effects of Pt-embedded, MIL-53-derived catalysts (Pt@Al2O3) and NaBH4 for water-mediated hydrogenolysis of biomass-derived furfural to 1,5-pentanediol at near-ambient temperature>, Formula: C5H10O2, the main research area is synergistic platinum embedded catalyst Al2O3 NaBH4 hydrogenolysis biomass.

We demonstrate an effective and selective conversion of biomass-derived furfural (FAL) to 1,5-pentanediol (1,5-PD) with high yields through a water-mediated hydrogenolysis process under mild reaction conditions (45°C, aqueous media). A novel alumina-supported platinum catalyst (Pt@Al2O3) with high-loading and uniform distribution of Pt nanoparticles is prepared through in situ synthesis of Pt-embedded metal-organic frameworks (i.e., MIL-53(Al)-NH2). As a typical example, a high yield of 75.2% 1,5-PD can be achieved from FAL conversion. A possible reaction mechanism is proposed based on the exptl. and computational findings, including XPS anal., kinetic studies, acidity measurements, and d. functional theory (DFT) calculations The high effectiveness of the proposed system is attributed to (1) the strong metal support interaction (SMSI) between Pt and penta-coordination aluminum, and (2) the synergistic effects of Bronsted acidic alumina support and the presence of sodium metaborate (NaBO2). Sodium borohydride (NaBH4) acts as both a hydrogen donor and a precursor for NaBO2, which results in an exclusive FAL to 1,5-PD (i.e., no 1,2-pentanediol) by regulating the water-mediated hydrogenolysis pathway as revealed by experiments and DFT calculations The reaction strategy proposed in this study has also manifested remarkable versatility for a wide range of furan derivatives

Journal of Catalysis published new progress about Biomass. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Formula: C5H10O2.

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

Pirmoradi, Maryam; Janulaitis, Nida; Gulotty, Robert J. Jr; Kastner, James R. published the artcile< Bi-Metal-Supported Activated Carbon Monolith Catalysts for Selective Hydrogenation of Furfural>, Formula: C5H10O2, the main research area is bi metal supported carbon monolith catalyst hydrogenation furfural.

Activated carbon monolith (ACM) catalysts were impregnated with Pd, Pd-Cu, and Pd-Fe for continuous hydrogenation of aqueous furfural (FUR). The effect of temperature, pressure, and liquid residence time on product selectivity and space-time yield (STY) was determined Adding a second metal to Pd/ACM shifted the selectivity of the catalyst from 2-methylfuran (2MF) and 2-methyltetrahydrofuran (2MTHF) to furfuryl alc. (FA) and tetrahydrofurfuryl alc. (THFA), resp., over the range of tested temperatures and pressures. High STYs of 272 g/Lcat/h (1089 g/kg-cat/h) for THFA and 143 g/Lcat/h (574 g/kg-cat/h) for FA were achieved using Pd-Fe/ACM at 180°C and 300 psig. Similarly, adding Fe increased the FUR, FA, and THFA turnover frequency by a factor of 3, 4, and 60, resp. The effect was not as pronounced when adding Cu. The effect of acetic acid, an impurity present in crude FUR, on FUR conversion and product selectivity was determined The surface area anal. indicated a relatively low loss of surface area over 13 hydrogenation reactions on each catalyst. The presence of a second metal on the monolith catalyst stabilized the Pd particles, reduced the leaching, and altered the product selectivity.

Industrial & Engineering Chemistry Research published new progress about Hydrogenation. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Formula: C5H10O2.

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

Verevkin, Sergey P.; Siewert, Riko; Pimerzin, Andrey A. published the artcile< Furfuryl alcohol as a potential liquid organic hydrogen carrier (LOHC): Thermochemical and computational study>, HPLC of Formula: 97-99-4, the main research area is furfuryl alc liquid organic hydrogen carrier thermochem hydrogenation dehydrogenation.

The liquid organic H carriers (LOHCs) are considered as a promising materials for H storage. The liquid phase standard molar enthalpies of formation of furfuryl alc. and tetrahydrofurfuryl alc. were obtained from high-precision combustion calorimetry. Their standard molar enthalpies of vaporization were derived from the vapor pressure temperature dependences measured by the transpiration method. Gas phase molar enthalpies of formation of furfuryl alc. and tetrahydrofurfuryl alc. calculated by the high-level quantum-chem. method G4, were in an excellent agreement with the exptl. results. Reaction enthalpies and equilibrium temperature of the hydrogenation/dehydrogenation reactions of furfuryl alc. were calculated and compared with the data for furan and other potential liquid organic H carriers.

Fuel published 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, HPLC of Formula: 97-99-4.

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

Garavagno, Maria de los A.; Hernandez, Federico J.; Jara-Toro, Rafael A.; Mahecha, Genesys; Barrera, Javier A.; Taccone, Raul A.; Pino, Gustavo A. published the artcile< Rate coefficient and mechanism of the OH-initiated degradation of cyclobutanol: A combined experimental and theoretical study>, Related Products of 97-99-4, the main research area is cyclobutanol OH initiated degradation rate coefficient exptl theor study.

The degradation process of cyclobutanol (cButOH) by hydroxyl radical (OH), under atm. conditions, (750 ± 10) Torr of air and (296 ± 2) K, has been studied. The rate coefficient for the title reaction (k296K = (7.3 ± 0.6) x 10-12 cm3 mol.-1 s-1) was determined at 296 K by the conventional relative-rate method. Electronic structure calculations with uCCSD(T)/uBHandHLYP/aug-cc-PVDZ were conducted to study the reaction mechanism. The global rate coefficient was also calculated using the transition state theory with tunneling corrections, obtaining a value of 5.4 x 10-12 cm3 mol.-1 s-1 in agreement with the exptl. determination Addnl., reaction products identification in clean and NOx-contaminated atmospheres was performed for the first time. The identified reaction products and their corresponding yields (YP) depend on the environment composition in which the reaction is studied. In the absence of NOx, cyclobutanone (cButanone) was the only identified product, with YcButanone = (0.66 ± 0.08). In NOx-contaminated atmospheres, in addition to cButanone, THF (THF), 2-nitro-1-butanol (2N1B), 3-nitro-2-butanol (3N2B) and 2-methyl-2-nitro-1-propanol (2M2N1P), were also identified as primary reaction products. Under this condition, we were able to determine only the yields of cButanone and THF (YcButanone = 0.38 ± 0.05 and YTHF = 0.28 ± 0.02). A likely reaction mechanism for the observed products is proposed and the atm. implications are discussed.

Atmospheric Environment published new progress about Alcohols, nitro Role: POL (Pollutant), OCCU (Occurrence). 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Related Products of 97-99-4.

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