The anisole to benzene conversion featured a first-order dependence with respect to PH2, while the conversion of phenol to benzene and m-cresol to toluene, showed PH2 and Poxygenate reaction orders of 1/2 and zero, respectively. A kinetic model showed that although the secondary pathway of ...
Selectivity-conversion data were used to determine an approximate quantitative reaction network accounting for phenol, 2-methylphenol, 2-methylanisole, and 4-methylphenol as primary products. Pseudo-first-order rate constants for the formation of these products are 12, 2.8, 0.14, and 0.039 L/(g of...
The selectivity–conversion data observed for anisole conversion catalyzed by Pt/Al2O3 (Figs. 4, 5) in the presence of H2 indicate that phenol, 2-methylphenol, and 4-methylphenol (data not shown) were primary products and that benzene, cyclohexanone, 2- and 4-methylanisole, and 2,6-dime...
However, the pore opening of TS-1 limits its applications to small molecules, typically linear alkanes or alkenes, or monosubstituted aromatic compounds such as phenol, anisole, and aniline. One of the strategies to overcome the disadvantage of TS-1 is the development of large-pore titanosilicate...
The depletion of fossil fuels and the negative impacts of their extraction and combustion on the environment have encouraged scientists and industrial stakeholders to explore the development of alternative, renewable energy resources such as bio-oil, which can be produced from biomass by fast pyrolysis...
Understanding the mechanisms by which lignin-derived compounds react in the presence of zeolites is important to enhancing aromatic yields and reducing coke generation. In this study we analyze catalytic pyrolysis of phenol and anisole (representing major lignin functionalities) using ZSM5 zeolites to ...
Phenol was the major product of the reactions, with direct deoxygenation of anisole to give benzene being kinetically almost insignificant under our conditions. We infer that the scission of the Cmethyl–O bond is more facile than the scission of the Caromatic–O bond, so that the HDO of ...
We infer that the scission of the C-methyl-O bond is more facile than the scission of the C-aromatic-O bond, so that the HDO of anisole likely proceeds substantially through the reactive intermediate phenol to give transalkylation products such as 2-methylphenol. The data determine rates of ...
The higher increase in surface acidity by fluoride loading increases both the C-alkylation selectivity (mainly to 2-methylanisole) and dealkylation to phenol; so that a lower anisole conversion (smaller pseudokinetic constant) and higher methylanisoles selectivity is found for APAI-P-F catalysts ...
Several bimolecular and unimolecular reactions are proposed to explain the evolution of products observed. The bimolecular reactions include the following transalkylation reactions: (a) anisoles to phenol and methylanisole; (b) phenol and methylanisole to cresols; (c) phenol and anisole to cresol and...