One-Pot Conversion of Lignin into Naphthenes Catalyzed by a Heterogeneous Rhenium Oxide-Modified Iridium Compound was written by Li, Xinxin;Zhang, Bo;Pan, Xiaoli;Ji, Jianwei;Ren, Yujing;Wang, Hua;Ji, Na;Liu, Qiying;Li, Changzhi. And the article was included in ChemSusChem in 2020.Safety of 4-Benzyloxyphenol The following contents are mentioned in the article:
The direct transformation of lignin into fuels and chems. remains a huge challenge because of the recalcitrant and complicated structure of lignin. In this study, rhenium oxide-modified iridium supported on SiO2 (Ir-ReOx/SiO2) is employed for the one-pot conversion of various lignin model compounds and lignin feedstocks into naphthenes. Up to 100% yield of cyclohexane from model compounds and 44.3% yield of naphthenes from lignin feedstocks are achieved. 2 D HSQC NMR spectroscopy before and after the reaction confirms the activity of Ir-ReOx/SiO2 in the cleavage of the C-O bonds and hydrodeoxygenation of the depolymerized products. H2 temperature-programmed reduction, temperature-programmed desorption of NH3, IR spectroscopy of pyridine adsorption, XPS, X-ray absorption fine structure anal., and control experiments reveal that a synergistic effect between Ir and ReOx in Ir-ReOx/SiO2 plays a crucial role in the high performance; ReOx is mainly responsible for the cleavage of C-O bonds, whereas Ir is responsible for hydrodeoxygenation and saturation of the benzene rings. This methodol. opens up an energy-efficient route for the direct conversion of lignin into valuable naphthenes. This study involved multiple reactions and reactants, such as 4-Benzyloxyphenol (cas: 103-16-2Safety of 4-Benzyloxyphenol).
4-Benzyloxyphenol (cas: 103-16-2) belongs to ethers. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Safety of 4-Benzyloxyphenol
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem