19354-27-9Relevant articles and documents
RELATIVE THERMODYNAMIC STABILITIES OF 2-(METHOXYMETHYLENE)TETRAHYDROFURAN AND 5-METHOXYMETHYL-2,3-DIHYDROFURAN
Taskinen, Esko
, p. 1 - 4 (1995)
The relative thermodynamic stabilities of the title compounds were determined by iodine catalyzed chemical equilibrium in cyclohexane solution.The main point of interest was a determination of the thermodynamic stability of the -O-C=C-O- moiety found in the exocyclic isomers, i.e. the stabilizing effect of a MeO group on the olefinic linkage of 2-methylenetetrahydrofuran.All three isomeric compounds have essentially similar enthalpy values, which, in comparison with some previous thermodynamic data, shows that the double bond stabilization energy of the MeO group in the exo isomers is only ca 3 kJ mol-1.The entropy difference between the geometrical isomers is negligible, whereas the endo isomer is favoured by an entropy contribution of ca 9 J K-1 mol-1.
Catalytic Transfer Hydrogenation of Furfural over CuNi@C Catalyst Prepared from Cu–Ni Metal-Organic Frameworks
Feng Li,Jiang, Shanshan,Wang, Yue,Huang, Jin,Li, Cuiqin
, p. 68 - 79 (2021/03/01)
Abstract: Cu/Ni-based metal-organic frameworks (CuNi@BTC) were prepared with benzene-1,3,5-tricarboxylate (H3BTC) as the organic ligand via the solvothermal method, and were then calcinated under N2 atmosphere to form C-coated CuNi catalysts (CuNi@C). TEM showed that carbon material on the surface of CuNi@C was a graphene-like structure. Then transfer hydrogenation of furfural catalyzed by CuNi@C was tested with alcohols as the hydrogen donor to optimize the Cu : Ni ratio, metal : organic ligand ratio, solvothermal synthesis, and calcination conditions. It was found that strong synergistic effect between Cu and Ni in the CuNi@C significantly enhanced the furfural transfer hydrogenation activity and raised the furfural selectivity. The reaction conditions of furfural transfer hydrogenation such as catalyst dosage, hydrogen donor, reaction temperature, and reaction time were studied. The catalytic mechanism for CTH of FF over CuNi@C catalyst was discussed.
Upgrading biomass-derived furans via acid-catalysis/hydrogenation: The remarkable difference between water and methanol as the solvent
Hu, Xun,Westerhof, Roel J. M.,Wu, Liping,Dong, Dehua,Li, Chun-Zhu
, p. 219 - 224 (2018/04/16)
In methanol 5-hydroxymethylfurfural (HMF) and furfuryl alcohol (FA) can be selectively converted into methyl levulinate via acidcatalysis, whereas in water polymerization dominates. The hydrogenation of HMF, furan and furfural with the exception of FA is
Solid acid-catalyzed conversion of furfuryl alcohol to alkyl tetrahydrofurfuryl ether
Cao, Quan,Guan, Jing,Peng, Gongming,Hou, Tonggang,Zhou, Jianwei,Mu, Xindong
, p. 76 - 79 (2014/12/11)
The acidic zeolite HZSM-5 (Si/Al = 25) achieved 58.9% selectivity of methyl furfuryl ether (MFE) and 44.8% selectivity of ethyl furfuryl ether (EFE) from etherification of furfuryl alcohol with methanol and ethanol. MFE and EFE were quantitatively hydrogenated into methyl tetrahydrofurfuryl ether (MTE) and ethyl tetrahydrofurfuryl ether (ETE) using a Raney Ni catalyst.
