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13 results on '"Du, Fang-Li"'

3. Mo-doped Al2O3-ZrO2-based composite as catalyst for one-step production of alkyl-substituted monophenols from lignin via direct deoxygenation

Author

Du, Fang-Li, Li, Yan-Ming, Xian, Xue-Quan, Lu, Bo, Huang, Gang, Tang, Pei-Duo, and Lai, Jun-Xiang

Abstract

Abstract: Different reaction conditions on the conversion of lignin and monophenol yield were investigated under the catalysis of (5% Mo)-Al2O3-ZrO2; the maximum conversion rate (78.9%) and monophenol yield (31.9%) were observed at 350 °C and 0.2 g catalyst using iso-propanol, in 45 min. The GC–MS analysis revealed that the main alkyl-substituted phenols are 4-ethyl-phenol (17.7%), 4-methyl-phenol (2.303%), phenol (1.878%), etc. The 1H NMR and FT-IR results indicated the presence of alkyl-substituted phenols in liquefaction products, and the formation mechanism of alkyl-substituted phenols was also proposed. Graphic abstract:

Published
2024
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11. Synthesis and characterization of organophosphine/phosphite stabilized silver(I) complexes bearing 2-acetyl-1,3-indandione ligand, crystal structure of [Ph3P·AgC11H7O3]

Author

Wang, Ning, Tao, Xian, Du, Fang-Li, Feng, Meng, Jiang, Li-Na, and Shen, Ying-Zhong

Subjects
*METAL complexes, *ORGANOSILVER compounds, *PHOSPHINE, *COMPLEX compounds synthesis, *LIGANDS (Chemistry), *MOLECULAR structure, *NUCLEAR magnetic resonance spectroscopy, *THERMAL analysis
Abstract

Abstract: Six organophosphine/phosphite stabilized silver(I) complexes of 2-acetyl-1,3-indandione (2-AID) of type L n ·AgC11H7O3 (L=PPh3; n =1, 2a; n =2, 2b; L=P(OMe)3; n =1, 2c; n =2, 2d; L=P(OEt)3; n =1, 2e; n =2, 2f) have been prepared by reacting of [AgC11H7O3], which could be obtained by reacting of 2-AID with AgNO3, with triphenylphosphine, trimethylphosphite, or triethylphosphite in 1:1–2M ratio. These complexes were obtained in high yields and characterized by elemental analysis, 1H, 13C{H} NMR, IR spectroscopy, and thermal analysis (TG and DSC), respectively. The molecular structure of 2a has been determined by X-ray single crystal analysis in which the silver atom is in a distorted trigonal geometry. [Copyright &y& Elsevier]

Published
2010
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12. Synthesis and characterization of organophosphine/phosphite stabilized N-silver(I) succinimide: crystal structure of [(Ph3P)3 ·AgNC4H4O2]

Author

Tao, Xian, Li, Yue-Qin, Xu, Hui-Hua, Wang, Ning, Du, Fang-Li, and Shen, Ying-Zhong

Subjects
*PHOSPHINE, *SUCCINIMIDES, *SILVER compounds, *MOLECULAR structure, *METAL complexes, *BOILING water reactors, *NUCLEAR magnetic resonance spectroscopy, *COMPLEX compounds synthesis
Abstract

Abstract: Six organophosphine/phosphite stabilized N-silver(I) succinimide complexes of the type L n ·AgNC4H4O2 (L=PPh3; n =1, 2a; n =2, 2b; n =3, 2c; L=P(OEt)3; n =1, 2d; n =2, 2e; n =3, 2f) have been prepared by reacting [AgNC4H4O2], which can be synthesized from succinimide and excessive Ag2O in boiling water, with triphenylphosphine or triethylphosphite in dichloromethane under a nitrogen atmosphere. These complexes were obtained in high yields and characterized by elemental analysis, 1H, 13C{H} NMR, IR spectroscopy and thermal analysis (TG and DSC). The molecular structure of 2c has been determined by X-ray single crystal analysis, in which the silver atom is in a distorted tetrahedral geometry. [Copyright &y& Elsevier]

Published
2009
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