Catalysis of Alcohol and Ether Dehydration on Gamma-Alumina

Selective hydrodeoxygenation of bio-oil derived products: ketones to olefins

“…Catalysis Science & Technology Paper ether concentration drops gradually at higher contact time (1.5-4.7 g h mol −1 ). This indicates that the ether can be converted to propylene and 2-propanol, 64 as demonstrated by the reaction of di-isopropyl ether over H-β (Table 4) and the scheme:…”

Estimation of Rate Constants from Multiresponse Kinetic Data

“…It was not the purpose of the present study to test the validity of the kinetic model employed with respect to other mechanistic proposals, since these matters have been treated elsewhere (Pines and Haag, 1960;Solomon et al, 1967). fractional pressure of alcohol, ether, olefin, and water respectively, with respect to initial partial pressures concentration of complex and unoccupied sites, respectively activation energy summing indices vector of parameters to be estimated forward and reverse rate constants, alcoholsite reactions forward and reverse rate constants, alcoholcomplex reaction forward rate constant, complex decomposition reaction forward rate constant, ether-site reaction equilibrium constant, Equation 8degrees of freedom, (r -1) number of experimental points initial pressure of reactant rate terms defined in Equations 4 to 7 number of responses surface site concentration…”

Conversion of the Acetone–Butanol–Ethanol (ABE) Mixture to Hydrocarbons by Catalytic Dehydration

“… normalC normalH 3 normal−C normalH 2 −OH → γ ‐ normalA normall 2 normalO 3 normalC normalH 2  normalC normalH 2 + normalH 2 normalO normalC normalH 3 normal−C normalH 2 −OH → γ ‐ normalA normall 2 normalO 3 normalC 2 normalH 5 normal−O− normalC 2 normalH 5 + normalH 2 normalO Here, ethanol reacts with alumina to form surface alkoxides which decompose to yield ethylene and diethyl ether . The ether formation is favored below 135 °C, and the ethylene formation is suppressed at a high concentration of surface ethoxide and surface hydroxyl groups .…”

“…Here, ethanol reacts with alumina to form surface alkoxides which decompose to yield ethylene and diethyl ether. 31 The ether formation is favored below 135 °C, and the ethylene formation is suppressed at a high concentration of surface ethoxide and surface hydroxyl groups. 26 However, at higher temperatures, ethylene is the only product found regardless of the surface concentrations of the above-mentioned groups.…”