Category: 97-99-4

Xia, Haihong; Chen, Changzhou; Liu, Peng; Zhou, Minghao; Jiang, Jianchun published the artcile< Selective hydrogenation of furfural for high-value chemicals: effect of catalysts and temperature>, Electric Literature of 97-99-4, the main research area is furfural selective hydrogenation bimetallic catalyst temperature effect.

Transformation of furfural (FFA), a typical representative of furan platform chems. derived from the acid hydrolysis of hemicellulose to the high value chems. tetrahydrofurfuryl alc. (THFOL) and cyclopentanol (CPL), has drawn great attention. In this study, we report an efficient NiCo bimetallic catalyst with highly dispersed NiCo-based metals on a porous carbon matrix for FFA hydrogenation. For different FFA conversion reactions of the bimetallic catalysts, the tetrahydrofurfuryl (THFOL) yield was up to 95% over the Ni3Co1@C catalyst at 80°C. Furthermore, cyclopentanol (CPL) could also be obtained with a yield of 95% with Ni1Co1@C as the catalyst at 160°C in an aqueous medium. The detailed physicochem. characterization was carried out by means of XRD, SEM, BET, ICP, XPS, NH3-TPD and Raman anal. With the addition of Co in the bimetallic catalysts, the average particle size decreased obviously to around 5.7 nm in NixCoy/C catalysts with different Ni/Co ratios, which increased the dispersion and improved the catalytic activity of FFA hydrogenation. The NixCoy@C catalysts could be recovered and efficiently applied in the next run for four consecutive recycling tests in FFA hydrogenation to the corresponding target products under different reaction conditions. The results suggested that the NixCoy@C catalyst appeared to increasingly favor the formation of Ni-Co alloys and suggested a metallic active site in FFA hydrogenation with the addition of the Co element. Mechanistic study indicated that temperature was a key factor contributing to the formation of different desired products (THFOL and CPL). Furthermore, water was another essential factor, which was responsible for the arrangement of the furan compound

Sustainable Energy & Fuels published new progress about Acidity. 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

Qian, Yang; Li, Ze-Jun; Du, Xian-Long; Zhang, Qi; Zhao, Yi; Liu, Yong-Mei; Cao, Yong published the artcile< Total hydrogenation of bio-derived furans over supported Ru subnanoclusters prepared via amino acid-assisted deposition>, Formula: C5H10O2, the main research area is titania supported lysine assisted ruthenium catalyst total hydrogenation furan.

Development of a highly efficient and robust catalyst with reduced usage of noble metals is extremely desirable for selective hydrogenations of furan-containing bio-based feedstocks, which represents an attractive and sustainable alternative to petrochem. resources. Herein, we describe a new type of well-dispersed Ru subnanoclusters (ca. 0.50 wt%) supported on com. P25 TiO2 material obtained from a facile and effective amino acid-assisted deposition-precipitation strategy. The as-synthesized catalyst exhibits superior catalytic activity and selectivity for direct hydrogenation of industrially important furfural as well as a range of structurally diverse bio-based furanic compounds to their corresponding fully hydrogenated derivatives An average turnover frequency (ATOF) value as high as 367 h-1 at 80°C and 4 MPa H2 is obtained, which is the highest reported value. This catalyst also shows stable furfural total hydrogenation in 5 reaction cycles conducted at 80°C (52 mmol-scale, turnover number up to 12 500). In terms of the kinetic and structural characterizations, the key performances of the ultrasmall Ru clusters are proposed to mainly originate from an enhanced number of unsaturated surface Ru atoms and change in local coordination environment. Our work highlights the importance of the subnanometric size of Ru clusters in the advancement of efficient and affordable approaches towards bio-based chem. production

Green Chemistry 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

Yu, Zhenjie; Tian, Hongli; Sun, Kai; Shao, Yuewen; Zhang, Lijun; Zhang, Shu; Duan, Peigao; Liu, Qing; Niu, Shengli; Dong, Dehua; Hu, Xun published the artcile< Impacts of externally added Bronsted and Lewis acid on conversion of furfural to cyclopentanone over Ni/SiC catalyst>, Computed Properties of 97-99-4, the main research area is Bronsted Lewis acid hydrogenation furfural cyclopentanone nickel catalyst; nickel silicon carbide catalyst hydrogenation furfural.

The conversion of furfural to cyclopentanone (CPO) involves not only hydrogenation but also acid-catalysis reactions. The step of the acid-catalysis might be catalyzed by Lewis acid or Bronsted acid or both, which was investigated in this study by employing Ni/SiC, a catalyst with “”clean”” surface containing negligible amounts of acidic sites. Lewis acid (nitrate salts and chloride salts) or Bronsted acid (D008, a solid acid resin catalyst) with externally added to the reaction medium. The results showed that both Lewis acid and Bronsted acid could catalyze the conversion of furfural to CPO. The further hydrogenation of furfuryl alc. (FA) to tetrahydrofurfuryl alc. was main side reaction, which could be suppressed more effectively with the Lewis acid like CrCl3. The yield of CPO could be up to ca. 88.1% with the Ni/SiC-CrCl3 catalytic system. The chelation of CrCl3 with FA stabilized the C=C bond in the furan ring and the hydroxyl group, preventing the side reactions while facilitating CPO formation. The synergistic effects between the cation and anion was essential for the conversion of FA to CPO as the varied nitrate salts or chloride salts chelated with furfural, FA or other reaction intermediates in distinct ways, determining distribution of the products.

Molecular Catalysis published new progress about Bronsted acids Role: CAT (Catalyst Use), USES (Uses). 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Computed Properties of 97-99-4.

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

Kosydar, Robert; Kolodziej, Michal; Lalik, Erwin; Gurgul, Jacek; Mordarski, Grzegorz; Drelinkiewicz, Alicja published the artcile< The role of hydrogen bronzes in the hydrogenation of polyfunctional reagents: cinnamaldehyde, furfural and 5-hydroxymethylfurfural over Pd/HxWO3 and Pd/HxMoO3 catalysts>, Category: tetrahydrofurans, the main research area is cinnamaldehyde hydroxymethyl furfural hydrogen bronze hydrogenation palladium catalyst.

Differences in the activity of Pd/WO3 and Pd/MoO3 (Pd loading 0.4-4 weight%) catalysts in competitive hydrogenations of the C=C and C=O groups in polyfunctional reagents have been studied as a function of two effects: (1) the in situ formation of hydrogen bronzes, HxWO3 and HxMoO3, and (2) the electronic interaction between the supports and the metallic Pd. The cinnamaldehyde (CAL), furfural (FU) and 5-hydroxymethylfurfural (HMF) were hydrogenated under mild reaction conditions. The formation of hydrogen bronzes in Pd/WO3 and phys. mixture of Pd/WO3 with supporting WO3 oxide upon exposure to H2 was also studied using the gas flow-through microcalorimetry. In both Pd/MoO3 and Pd/WO3 catalysts, the electronic interactions contributed to the promotion of selectivity toward the C=O hydrogenation in CAL and FU, yet in Pd/MoO3 this effect was much more pronounced. On the other hand, apart from increasing the overall reaction rate, the formation of hydrogen bronzes remarkably enhances the C=C hydrogenation in CAL, as well as the decarbonylation of FU to furan and hydrogenolysis of C-OH in HMF to 5-methylfurfural. The bronze effects are significantly stronger in HxWO3, compared to HxMoO3, which may be related to higher H-species mobility and weaker H-bonding in the W-O-H (54 kJ/mol H2) than in the Mo-O-H (100 kJ/mol H2). This may also explain very high tendency of Pd/WO3 to furan ring hydrogenation in FU and HMF as well as almost selective (>98%) hydrogenation of furfuryl alc. to tetrahydrofurfuryl alc.

International Journal of Hydrogen Energy published new progress about Hydrogenation. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Category: tetrahydrofurans.

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

Zhu, Yanru; Zhao, Wenfang; Zhang, Jian; An, Zhe; Ma, Xiaodan; Zhang, Zhijun; Jiang, Yitao; Zheng, Lirong; Shu, Xin; Song, Hongyan; Xiang, Xu; He, Jing published the artcile< Selective activation of C-OH, C-O-C, or C=C in furfuryl alcohol by engineered Pt Sites supported on layered double oxides>, Product Details of C5H10O2, the main research area is selective activation carbon OH oxygen furfuryl alc engineered.

The selective activation of targeted bonds in biomass-derived furfural or furfuryl alc. with complex chem. linkages (C-C/C-H/C-O, C=C/C=O, or C-O-H/C-O-C) is of great challenge for biomass upgrading, expecting well-defined catalyst and definite catalytically active sites. This work demonstrates an efficient targeted activation to C-OH, C-O-C, or C=C by engineering the structure of catalytic Pt sites, affording 2-methylfuran (2-MF), tetrahydrofurfuryl alc. (THFA), or 1,2-pentanediol (1,2-PeD) as product in the hydroconversion of furfuryl alc. The catalytic Pt sites have been engineered as at. Pt, coordination unsaturated Pt-Pt in atom-thick dispersion, or coordination unsaturated 3D Pt-Pt by tailoring the Pt dispersion (single atom, 2D cluster, or 3D cluster) on Mg and Al-containing layered double oxide (Mg(Al)O) support. The selective activation of C-OH, C-O-C, or C=C has been traced with the FT-IR spectra recorded surface reaction. On at. Pt, C-O-H is easily activated, with the assistance of Mg(Al)O support, with O-terminal adsorption without affecting furan C-O and C=C. However, C=C in the furan ring is easier to be activated on coordination-unsaturated Pt-Pt in atom-thick dispersion, resulting in a step-by-step hydrogenation to generate THFA. On coordination-unsaturated 3D Pt-Pt, the hydrogenolysis of furan ring is favored, resulting in the cleavage of furan C-O to produce 1,2-PeD. Also, the Mg(Al)O supports derived from Mg and Al layered double hydroxides (LDHs) here also play a key role in promoting the selectivity to 1,2-PeD by providing basic sites.

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

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

Sunyol, C.; English Owen, R.; Gonzalez, M. D.; Salagre, P.; Cesteros, Y. published the artcile< Catalytic hydrogenation of furfural to tetrahydrofurfuryl alcohol using competitive nickel catalysts supported on mesoporous clays>, Name: (Tetrahydrofuran-2-yl)methanol, the main research area is catalyst hydrogenation furfural tetrahydrofurfuryl alc nickel supported mesoporous clay.

Nickel catalysts supported on mesoporous clays with different acid properties, such as montmorillonite MK-10, Al-pillared montmorillonite, mesoporous Na-saponite and mesoporous H-saponite, were prepared, characterized and tested for the hydrogenation of furfural to tetrahydrofurfuryl alc. (THFA). Clays were also modified introducing basicity through magnesium oxide in different amounts Catalysts with higher acidity or low amounts of metallic centers favored deactivation and/or selectivity to the non-desired products. Interestingly, the addition of MgO both neutralized the acidity of the montmorillonite supports and improved the hydrogenation of the furanic ring, resulting in higher selectivity to THFA. The best catalyst was the one prepared with montmorillonite MK-10 covered by 30 wt% of magnesium oxide and with 8.8% of the Ni metal phase achieving total conversion and total selectivity to THFA. The activity of this catalyst was maintained after several reuses.

Applied Catalysis, A: General published new progress about Acidity. 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, R. M.; Belskaya, O. B.; Likholobov, V. A. published the artcile< Carbon Black as a Support in Palladium Catalysts for Hydrogenation of Organic Compounds>, Application In Synthesis of 97-99-4, the main research area is palladium carbon black catalyst hydrogenation.

The possibility of using carbon black (CB) as a support of palladium catalysts for the selective hydrogenation of organic compounds is considered. The advantages of Pd/CB catalysts are demonstrated by examples of liquid-phase hydrogenation of aromatic aldehydes and nitro compounds The combination of high catalytic parameters (activity, selectivity, and stability) achieved by these catalysts in hydrogenation reactions indicates that they are promising for use on an industrial scale, in particular in the syntheses of fine chems.

Solid Fuel Chemistry published new progress about Aldehydes Role: NUU (Other Use, Unclassified), 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

Wang, Chenguang; Liu, Yong; Cui, Zhibing; Yu, Xiaohu; Zhang, Xinghua; Li, Yuping; Zhang, Qi; Chen, Lungang; Ma, Longlong published the artcile< In Situ Synthesis of Cu Nanoparticles on Carbon for Highly Selective Hydrogenation of Furfural to Furfuryl Alcohol by Using Pomelo Peel as the Carbon Source>, Recommanded Product: (Tetrahydrofuran-2-yl)methanol, the main research area is copper nanoparticle carbon hydrogenation furfural furfuryl alc.

A facile approach was developed to directly synthesize carbon-supported metal nanoparticles with pomelo peel as the carbon source and metal nitrate solution as the metal source. Fe/C, Co/C, Ni/C, and Cu/C catalysts were prepared after calcination in N2 without further reduction The metal nanoparticles and formation mechanism were investigated by multiple techniques such as XRD, HRTEM, XPS, FTIR spectra, SEM, and TG-MS thermal anal. In the case of furfural hydrogenation, Cu/C catalyst exhibited the best activity and exclusive selectivity to produce furfuryl alc. with complete conversion, and excellent selectivity can be maintained at a higher temperature of 240°C. The particle size of Cu nanoparticles can be tuned by the calcination temperature and metal loading for improving catalytic activity. The excellent performance of Cu nanoparticles was also studied by d. functional theory calculation, agreeing well with the experiments A green and facile approach to in situ synthesis of metal nanoparticles on carbon for exclusively selective hydrogenation of furfural.

ACS Sustainable Chemistry & Engineering published new progress about Calcination. 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

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>, Electric Literature of 97-99-4, 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 Computation published new progress about Alcohols Role: PRP (Properties). 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

Lan, Jingmin; Liu, Peiwen; Fu, Ping; Liu, Xiaoling; Xie, Menglin; Jiang, Shi; Wen, Haimeng; Zhou, Yu; Wang, Jun published the artcile< Palladium confined in pure-silica TON zeolite for furfuryl alcohol hydrogenation into tetrahydrofurfuryl alcohol>, Formula: C5H10O2, the main research area is furfuryl alc hydrogenation palladium silica zeolite.

Fabrication of robust noble metal nanoparticles (NPs) usually suffers from instability due to the large surface energy of small particles. Herein, highly dispersive Pd nanoparticles (average size: ∼3 nm) with controllable content were directly encapsulated within pure silica zeolite matrix with TON topol. via a dry gel conversion pathway, in which 1-butyl-3-methylimidazolium bromide and (3-mercaptopropyl) trimethoxysilane were utilized as the structure-directing agent and metal stabilizer, resp. High crystallinity and large surface area were reached over this Pd containing zeolites. The champion catalyst Pd-Si-ZSM-22 effectively catalyzed the transformation of furfuryl alc. into tetrahydrofurfuryl alc. via hydrogenation by using H2. High conversion (>99%) and selectivity (>99%) were reached with large turnover numbers and the stable activity was observable during the recycling test. The comparison with the post-impregnated counterpart indicates that the straightforward synthesis is favorable for the construction of stable and robust Pd species within the confined microchannels of TON zeolites.

Microporous and Mesoporous Materials published new progress about Crystallinity. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Formula: C5H10O2.

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