Tag: M.W=100-150

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

Insyani, Rizki; Barus, Amsalia Florence; Gunawan, Ricky; Park, Jaeyong; Jaya, Gladys Tiffany; Cahyadi, Handi Setiadi; Sibi, Malayil Gopalan; Kwak, Sang Kyu; Verma, Deepak; Kim, Jaehoon published the artcile< RuO2-Ru/Hβ zeolite catalyst for high-yield direct conversion of xylose to tetrahydrofurfuryl alcohol>, Application In Synthesis of 97-99-4, the main research area is RuO2 ruthenium Hbeta zeolite catalyst xylose tetrahydrofurfuryl alc.

Tetrahydrofurfuryl alc. (THFOL), a valuable biomass-derived chem., is an important precursor for producing linear diols and biodegradable solvents. Herein, we present the one-pot cascade conversion of xylose to THFOL over an Hβ zeolite-supported RuO2-Ru (RuO2-Ru/Hβ) catalyst. To elucidate the structure-property correlation of the RuO2-Ru/Hβ catalyst and achieve a high THFOL yield via sequential isomerization, dehydration, and hydrogenation, several synthesis methods, namely incipient wetness impregnation, reductive deposition, activated reductive deposition, and post-oxidative activated reductive deposition (ARD-O) were used. The best catalytic performance was obtained over the RuO2-Ru/Hβ-ARD-O catalyst. An almost complete conversion of xylose and a high THFOL yield of 61.8% were achieved after 1 h at 180°C under an initial H2 pressure of 3.0 MPa in THF. In-depth analyses of the RuO2-Ru/Hβ-ARD-O catalyst furfural (FFA)- and CO-probed diffuse reflectance IR Fourier transform spectra indicated the formation of RuO2 at the corner and edge sites of Ru nanoparticles. The direct conversion of FFA to THFOL at interfacial RuO2-Ru sites without furfuryl alc. (FOL) readsorption hindered the contact of FOL with the acidic support, which suppressed the formation of humin and other byproducts and led to a high THFOL yield.

Applied Catalysis, B: Environmental published new progress about Ammonium-exchanged zeolites, NH4-beta Role: CAT (Catalyst Use), USES (Uses). 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>, Formula: C5H10O2, 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 Catalysis published new progress about Carbon nanotubes. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Formula: C5H10O2.

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

Shao, Yuewen; Guo, Mingzhu; Wang, Junzhe; Sun, Kai; Zhang, Lijun; Zhang, Shu; Hu, Guangzhi; Xu, Leilei; Yuan, Xiangzhou; Hu, Xun published the artcile< Selective Conversion of Furfural into Diols over Co-Based Catalysts: Importance of the Coordination of Hydrogenation Sites and Basic Sites>, Category: tetrahydrofurans, the main research area is selective hydrogenation furfural diol Cobalt magnesium aluminum hydrogenation catalyst.

1,5-Pentanediol (1,5-PDO) is a feedstock for synthesis of polyesters and polyurethanes, and its selective production from furfural is a desirable route but very challenging. In this study, the production of 1,5-PDO from furfural was investigated over the Co-Mg-Al catalyst, containing abundant hydrogenation sites and basic sites. Using layered double hydroxides as the catalyst precursor benefited dispersion of metallic Co particles via preventing migration of cobalt species and developing pore structures. Furthermore, the Co-Mg-Al catalyst possessed abundant basic sites, rendering its superior catalytic activity to Co-Al or Co-Mg catalysts. In situ diffuse reflectance IR spectroscopy (DRIFTS) characterization for FA conversion demonstrated that the cooperation of abundant hydrogenation sites and basic sites facilitated a strong adsorption of C-O-C and carbon-carbon double-bond groups, which benefited the conversion of FA into diols.

Industrial & Engineering Chemistry Research published new progress about Glycols Role: SPN (Synthetic Preparation), PREP (Preparation). 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Category: tetrahydrofurans.

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

Kumar, Abhinav; Shivhare, Atal; Bal, Rajaram; Srivastava, Rajendra published the artcile< Metal and solvent-dependent activity of spinel-based catalysts for the selective hydrogenation and rearrangement of furfural>, Recommanded Product: (Tetrahydrofuran-2-yl)methanol, the main research area is furfural nickel copper metal catalyst hydrogenation rearrangement.

The development of cost-effective heterogeneous catalysts for the selective conversion of biomass-derived platform chems. into value-added chems. and liquid fuels will pave the way towards the development of sustainable biorefineries. Herein, we perform in-depth optimization of the catalyst composition and exptl. conditions to selectively produce three important value-added chems. from furfural, including cyclopentanone, furfuryl alc., and tetrahydrofurfuryl alc. Results show that the Ni(10%)/CuFe2O4 catalyst affords cyclopentanone as a major product with >90% selectivity in water at 423 K and 1 MPa H2. Meanwhile, switching to non-aqueous solvents, including hexane, isopropanol, toluene, and ethanol, selectively produces tetrahydrofurfuryl alc. as a major product under identical reaction conditions. Over the Cu(10%)/CuFe2O4 catalyst, furfuryl alc. is produced as a major product in water at 393 K and 1 MPa H2. Control experiments over M/CuO, M/Fe3O4, and M/SBA-15 catalysts are also performed; however. these catalysts afford much lower conversion compared to the M/CuFe2O4 catalysts due to the higher Lewis acidity of the CuFe2O4 support. The physicochem. properties of these catalysts are characterized using powder XRD, HR-TEM, XPS, and pyridine FT-IR. Finally, based on the existing literature, plausible reaction mechanisms for the production of cyclopentanone, tetrahydrofurfuryl alc., and furfural alc. on M/CuFe2O4 catalysts are proposed. The present work provides insight into the development of cost-effective and efficient catalysts for the valorization of furfural under mild conditions.

Sustainable Energy & Fuels 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

Delima, Roxanna S.; Stankovic, Mia D.; MacLeod, Benjamin P.; Fink, Arthur G.; Rooney, Michael B.; Huang, Aoxue; Jansonius, Ryan P.; Dvorak, David J.; Berlinguette, Curtis P. published the artcile< Selective hydrogenation of furfural using a membrane reactor>, Recommanded Product: (Tetrahydrofuran-2-yl)methanol, the main research area is furfural selective hydrogenation membrane reactor.

Electrocatalytic palladium membrane reactors (ePMRs) use electricity and water to drive hydrogenation reactions without forming H2 gas. In these reactors, a hydrogen-permeable palladium foil phys. separates electrochem. proton generation in aqueous media from chem. hydrogenation in organic media. The authors report herein the use of the ePMR to electrolytically hydrogenate furfural, an important biomass derivative This system was proven to convert furfural into furfuryl alc. and tetrahydrofurfuryl alc. with 84% and 98% selectivities, resp. To reach these high selectivities, the authors designed and built an ePMR for high-throughput testing. Using this apparatus, the authors tested how different solvents, catalysts, and applied currents impacted furfural hydrogenation. The authors found that bulky solvents with weak nucleophilicities suppressed the formation of side products. Notably, these types of solvents are not compatible with standard electrochem. hydrogenation architectures where electrolysis and hydrogenation occur in the same reaction chamber. This work highlights the utility of the ePMR for selective furfural hydrogenation without H2 gas, and presents a possible pathway for helping to decarbonize the hydrogenation industry.

Energy & Environmental Science published new progress about Hydrogenation catalysts. 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