Category: 97-99-4

Li, Xinsheng; Pang, Jifeng; Luo, Wenhao; Zhao, Yu; Pan, Xiaoli; Zheng, Mingyuan published the artcile< Catalytic Conversion of Tetrahydrofurfuryl Alcohol over Stable Pt/MoS2 Catalysts>, Recommanded Product: (Tetrahydrofuran-2-yl)methanol, the main research area is platinum molybdenum disulfide catalyst tetrahydrofurfuryl alc hydrogenation.

MoS2 supported noble metal catalysts were used for the catalytic conversion of terahydrofurfuryl alc. (THFA) to 1,5-pentanediol (1,5-PDO) and its derivate tetrahydropyrane (THP). Over the optimal 4%Pt/MoS2-FR catalyst, 75.8% overall selectivity (35.4% to 1,5-PDO and 40.4% to THP) and 63.7% conversion of 5 wt% THFA solution were obtained after 8 h reaction at 250°C. The catalyst showed stable catalytic performance in five-cycle reactions, demonstrating the robustness of Pt/MoS2 under the harsh hydrothermal and hydrogenation conditions. A variety of characterizations, including CO-DRIFTS, HRTEM, H2-TPR, Raman spectroscopy and XPS revealed that typical behavior of strong metal-support interaction (SMSI) existed between Pt and MoS2, largely caused by the coverage of MoS2 over Pt and rarely reported previously. The Pt/MoS2 had intact structure under the harsh conditions thanks to the SMSI and chem. stability of MoS2. The acidity of Pt/MoS2 was negligible, and the active sites for the reaction were attributed to Pt and the Mo sites interacting closely on the catalysts. The reaction pathway was proposed according to the product distributions and the results of conditional experiments

Catalysis Letters published new progress about Acidity. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Recommanded Product: (Tetrahydrofuran-2-yl)methanol.

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

Shao, Yuewen; Wang, Junzhe; Sun, Kai; Gao, Guoming; Li, Chao; Zhang, Lijun; Zhang, Shu; Xu, Leilei; Hu, Guangzhi; Hu, Xun published the artcile< Selective hydrogenation of furfural and its derivative over bimetallic NiFe-based catalysts: Understanding the synergy between Ni sites and Ni-Fe alloy>, Category: tetrahydrofurans, the main research area is furfural hydrogenation nickel iron catalyst synergistic effect.

Pentanediols (1,2-pentanediol and 1,5-pentanediol) are important feedstock for synthesis of fine chems., production of which from the biomass-derived furfural or furfuryl alc. (FA) has been considered as a sustainable route and attracted much interest. In this study, the catalysts with Ni-Fe as the metal sites and Mg-Al layered double hydroxides (LDH) as precursor of support were synthesized. The results showed that the presence of Fe in catalyst affected both the development of the pores of the catalyst and the catalytic behaviors of nickel species. A low Fe content facilitated formation of mesoporous structure, but the higher content destroyed the LDH structure, resulting in a decreased surface area. Fe could also react with metallic Ni to form NiFe alloy. This decreased the catalytic activity for the further hydrogenation of the furan ring in FA, and FA would thus have the chance to produce pentanediols via hydrogenolysis. The in-situ diffuse reflectance IR Fourier transform spectroscopy characterization of hydrogenation of FA indicated that the alloying between Fe and Ni resulted in a weak adsorption of C=C group in furan ring and moderate adsorption of C-O-C group, which suppressed the complete hydrogenation of FA while facilitated the ring-opening of FA to form the pentanediols.

Renewable Energy published new progress about Crystallinity. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Category: tetrahydrofurans.

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

Shibutani, Shotaro; Kodo, Taiga; Takeda, Mitsutaka; Nagao, Kazunori; Tokunaga, Norihito; Sasaki, Yusuke; Ohmiya, Hirohisa published the artcile< Organophotoredox-Catalyzed Decarboxylative C(sp3)-O Bond Formation>, Electric Literature of 97-99-4, the main research area is ether secondary amine thioether preparation; alc amine thiol dioxoisoindolinyl carboxylate photoredox decarboxylative coupling.

This manuscript reports a visible-light-mediated organosulfide catalysis that enables the decarboxylative coupling between simple aliphatic alc. and tertiary or secondary alkyl carboxylic acid-derived redox active esters to produce a C(sp3)-O-C(sp3) fragment. Results of the coupling using other heteroatom nucleophiles such as water, amides, and thiols are also described.

Journal of the American Chemical Society 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, Electric Literature of 97-99-4.

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

Wanderley, Ricardo R.; Pinto, Diego D. D.; Knuutila, Hanna K. published the artcile< Investigating opportunities for water-lean solvents in CO2 capture: VLE and heat of absorption in water-lean solvents containing MEA>, COA of Formula: C5H10O2, the main research area is flue gas carbon dioxide absorption water lean solvent; amine wet scrubbing carbon dioxide absorption; vapor liquid equilibrium water lean solvent carbon dioxide absorption; high volatility solvent carbon dioxide absorption; low volatility solvent carbon dioxide absorption.

A thorough study of a set of organic diluents for water-lean solvent formulation was conducted. Performance of 30 weight percent/weight aqueous monoethanolamine (MEA) 30 was compared to that of mixtures of 30 weight percent/weight MEA and methanol, acetone, monoethylene glycol (MEG), N-methyl-2-pyrrolidone (NMP), tetrahydrofurfuryl alc. (THFA), sulfolane, cyclopentanone (CC5), furfuryl alc., and γ-butyrolactone. A small calorimeter was used to obtain vapor-liquid equilibrium (VLE) and heat of absorption data. Shifting from aqueous to non-aqueous solvents had significant implications for VLE, since all water-lean solvents had lower CO2 solubility than aqueous MEA; however, heat of absorption was not much affected. Results showed the limitations of using most ethers, esters, and ketones for water-lean solvent formulation, all stemming from the very low dielec. permittivity of these diluents and the difficulty of stabilizing intermediate reaction species between MEA and CO2 within these systems. Nevertheless, the low volatility of solvents containing MEG, NMP, or THFA could offer opportunities for processes with overall less reboiler heat duties than that of ordinary aqueous MEA.

Separation and Purification Technology published new progress about Absorption. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, COA of Formula: C5H10O2.

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

Wu, Jingcheng; Zhang, Xinghua; Chen, Qiang; Chen, Lungang; Liu, Qiying; Wang, Chenguang; Ma, Longlong published the artcile< One-Pot Hydrogenation of Furfural into Tetrahydrofurfuryl Alcohol under Ambient Conditions over PtNi Alloy Catalyst>, Product Details of C5H10O2, the main research area is furfural one pot hydrogenation tetrahydrofurfuryl alc platinum nickel alloy.

Furfural (FAL), a promising renewable platform compound from biomass, can be totally hydrogenated to an industrially important platform chem., tetrahydrofurfuryl alc. (THFA). In this work, a high yield of THFA was obtained by one-pot hydrogenation of FAL over a PtNi catalyst under mild reaction conditions. Small PtNi alloy particles were well distributed on active carbon. The catalysts were characterized by several phys.-chem. technologies (transmission electron microscopy, X-ray diffraction, energy-dispersive spectroscopy, and inductively coupled plasma spectroscopy). Temperature-programmed reduction with hydrogen and in situ XPS demonstrate the presence of PtNi alloy. The electron-rich metal Pt could facilitate the heterolytic dissociation of hydrogen and promote the hydrogenation of FAL. Pt sites on the surface facilitate the adsorption at aldehyde (C=O) groups, and the furan ring strongly adsorbs on the Ni surface. Low reaction temperature is advantageous to reduce side reactions. Various metal concentrations were employed in this reaction; Pt(3)Ni(3)/C catalyst exhibits the best performance, achieving 99% FAL conversion and 93% THFA yield at 35°C and under 2 MPa H2.

Energy & Fuels published new progress about Hydrogenation catalysts. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Product Details of C5H10O2.

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

Luo, Yang; Ma, Hong; Zhang, Shujing; Zheng, Daoyuan; Che, Penghua; Liu, Xin; Zhang, Meiyun; Gao, Jin; Xu, Jie published the artcile< Binding Energy as Driving Force for Controllable Reconstruction of Hydrogen Bonds with Molecular Scissors>, Application of C5H10O2, the main research area is binding energy hydrogen bond mol scissor.

Hydrogen bonds are one of the most important directional intermol. interactions and play key roles in chem. and biochem. systems, but there is still a lack of prediction and understanding of their control. Herein, hydrogen-binding energy (EHB) acted as a driving force for controllably reconstructing hydrogen bonds with mol. scissors. We related hydrogen-binding energies of the donor-acceptor couple (EHB,2) and the donor itself (EHB,1) and ΔG based on ΔG = a1EHB,1 + a2EHB,2 + a3. When EHB,1 and EHB,2 satisfy the condition ΔG < 0, the acceptor is predicted as mol. scissors with sufficient reconstruction capacity in breaking the initial hydrogen bonds and forming new ones. Remarkably, we developed an exptl. method to determine the EHB values by a linear equation as a function of chem. shifts (δ), which is innovational since in the former research EHB can only be deduced from empirical formulas and DFT calculation On that basis, the hydrogen bonds of α-cellulose were broken and re-formed in mol. scissors-consisting deep eutectic solvents, leading to the white powder transforming into a hydrogel and colorless and transparent thin film materials with distinct crystalline structure, surface flatness, and morphol. Journal of the American Chemical Society published new progress about Binding energy. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Application of C5H10O2.

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

Audemar, Maite; Wang, Yantao; Zhao, Deyang; Royer, Sebastien; Jerome, Francois; Len, Christophe; De Oliveira Vigier, Karine published the artcile< Synthesis of furfuryl alcohol from furfural: a comparison between batch and continuous flow reactors>, Related Products of 97-99-4, the main research area is cobalt silica catalyst furfural hydrogenation furfuryl alc; continuous flow batch reactor.

Furfural is a platform mol. obtained from hemicellulose. Among the products that can be produced from furfural, furfuryl alc. is one of the most extensively studied. It is synthesized at an industrial scale in the presence of CuCr catalyst, but this process suffers from an environmental neg. impact. Here, we demonstrate that a non-noble metal catalyst (Co/SiO2) was active (100% conversion of furfural) and selective (100% selectivity to furfuryl alc.) in the hydrogenation of furfural to furfuryl alc. at 150°C under 20 bar of hydrogen. This catalyst was recyclable up to 3 cycles, and then the activity decreased. Thus, a comparison between batch and continuous flow reactors shows that changing the reactor type helps to increase the stability of the catalyst and the space-time yield. This study shows that using a continuous flow reactor can be a solution to the catalyst suffering from a lack of stability in the batch process.

Energies (Basel, Switzerland) published new progress about Batch bioreactors. 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

Pirmoradi, Maryam; Janulaitis, Nida; Gulotty, Robert J.; Kastner, James R. published the artcile< Continuous Hydrogenation of Aqueous Furfural Using a Metal-Supported Activated Carbon Monolith>, Formula: C5H10O2, the main research area is continuous hydrogenation aqueous furfural palladium activated carbon.

Continuous hydrogenation of aqueous furfural (4.5%) was studied using a monolith form (ACM) of an activated carbon Pd catalyst (~1.2% Pd). A sequential reaction pathway was observed, with ACM achieving high selectivity and space time yields (STYs) for furfuryl alc. (~25%, 60-70 g/L-cat/h, 7-15 1/h liquid hourly space velocity, LHSV), 2-methylfuran (~25%, 45-50 g/L-cat/h, 7-15 1/h LHSV), and tetrahydrofurfuryl alc. (~20-60%, 10-50 g/L-cat/h, <7 1/h LHSV). ACM showed a low loss of activity and metal leaching over the course of the reactions and was not limited by H2 external mass transfer resistance. Acetic acid (1%) did not significantly affect furfural conversion and product yields using ACM, suggesting Pd/ACM's potential for conversion of crude furfural. Limited metal leaching combined with high metal dispersion and H2 mass transfer rates in the composite carbon catalyst (ACM) provides possible advantages over granular and powd. forms in continuous processing. ACS Omega published new progress about Crystallites. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Formula: C5H10O2.

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

Shao, Yuewen; Wang, Junzhe; Du, Huining; Sun, Kai; Zhang, Zhanming; Zhang, Lijun; Li, Qingyin; Zhang, Shu; Liu, Qing; Hu, Xun published the artcile< Importance of Magnesium in Cu-Based Catalysts for Selective Conversion of Biomass-Derived Furan Compounds to Diols>, Related Products of 97-99-4, the main research area is magnesium copper catalyst biomass furan diol.

Selectively hydrogenating the carbonyl of furfural and opening of the furan ring is challenging but crucial for efficient conversion of furfural to pentanediols, the valuable chems. In this study, CuMgAl catalysts with highly dispersed Cu particles and tunable basic sites were synthesized with layered double hydroxides as precursors for hydrogenation of furfural to furfuryl alc. (FA) and the subsequent hydrogenolysis of FA to 1,2-pentanediol and 1,5-pentanediol. The presence of varied content of Mg in the catalyst promoted dispersion of copper oxide and exposure of metallic copper species, weakened interaction between copper oxides and the carrier, suppressed sintering of metallic copper species, and increased abundance of the basic sites, promoting the catalytic activity/selectivity/stability. Strong chem. adsorption of the furan ring in FA on basic sites of the catalyst suppressed hydrogenation of the furan ring and facilitated opening of the furan ring in FA, the rate-determining step for formation of the diols. High yields of 1,2-pentanediol and 1,5-pentanediol are achieved over the copper-based catalyst via the hydrogenolysis of furfuryl alc.

ACS Sustainable Chemistry & Engineering published new progress about Biomass. 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

Islam, Mohammed J.; Granollers Mesa, Marta; Osatiashtiani, Amin; Manayil, Jinesh C.; Isaacs, Mark A.; Taylor, Martin J.; Tsatsos, Sotirios; Kyriakou, Georgios published the artcile< PdCu single atom alloys supported on alumina for the selective hydrogenation of furfural>, Product Details of C5H10O2, the main research area is palladium copper catalyst alumina support furfural hydrogenation.

Single-atom catalysts serve as a skilful control of precious metals on heterogenous catalysts where all active sites are accessible for catalytic reactions. Here we report the adoption of PdCu single-atom alloys supported on alumina for the selective hydrogenation of furfural. This is a special class of an atom efficient, single-site catalyst where trace concentrations of Pd atoms (0.0067 weight%) displace surface Cu sites on the host nanoparticle. Confirmed by EXAFS, the Pd atoms are entirely coordinated to Cu, with Pd-Cu bond lengths identical to that of a Cu-Cu bond. Selectively surface oxidized catalysts also confirm surface Pd atoms by EXAFS. These catalysts improve the conversion of furfural to furfuryl alc. compared to monometallic catalysts, as they have the advantages of Cu (high selectivity but poor activity) and Pd catalysts (superior activity but unselective) without the drawbacks, making them the optimal catalysts for green/atom efficient catalysis.

Applied Catalysis, B: Environmental published new progress about Crystallinity. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Product Details of C5H10O2.

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