Vapor-Phase Alkylation of Phenol with Tert-butyl Alcohol Catalyzed by H3PO4/MCM-41

2010 ◽  
Vol 31 (7) ◽  
pp. 759-764 ◽  
Author(s):  
Mehran GHIACI ◽  
Behzad AGHABARARI
2018 ◽  
Vol 125 (1) ◽  
pp. 351-364 ◽  
Author(s):  
Tingshun Jiang ◽  
Yingjie Xie ◽  
Liming Dai ◽  
Yingying Li ◽  
Qian Zhao

ChemInform ◽  
2007 ◽  
Vol 38 (13) ◽  
Author(s):  
Yu-Bin Yuan ◽  
Jin Nie ◽  
Zheng-Bo Zhang ◽  
San-Yi Zhou

2018 ◽  
Vol 69 (11) ◽  
pp. 3042-3047
Author(s):  
Song Il Kong ◽  
Anca Borcea ◽  
Diana Cursaru ◽  
Dragos Ciuparu

The mechanism and kinetics of gas phase synthesis of ethyl-tert-butyl ether (ETBE) in the reaction between tert-butyl alcohol (TBA) and ethanol (EtOH) were investigated performing the reaction in a continuous flow quartz reactor at different temperatures and atmospheric pressure, using a heteropoliacid catalyst with 30wt% loading, dispersed on MCM-41. The Eley-Rideal reaction mechanism was previously proposed based on experimental observations that showed the rate of ETBE increased when partial pressure of tert-butyl alcohol increased, and the partial pressure of ethanol decreased, without significant effects on product selectivity. The kinetic model based on the Eley-Rideal mechanism was proposed and successfully employed to model accurately the experimental data at three different temperatures. The apparent activation energy and the frequency factor of the etherification reaction were 39.42 kJ/mol and 1.69 x 108 mol/kg . h . bar, respectively.


1993 ◽  
Vol 58 (5) ◽  
pp. 1001-1006 ◽  
Author(s):  
Oľga Vollárová ◽  
Ján Benko

The kinetics of oxidation of [Co(en)2SCH2COO]+ with S2O82- was studied in water-methanol and water-tert-butyl alcohol mixtures. Changes in the reaction activation parameters ∆H≠ and ∆S≠ with varying concentration of the co-solvent depend on the kind of the latter, which points to a significant role of salvation effects. The solvation effect on the reaction is discussed based on a comparison of the transfer functions ∆Ht0, ∆St0 and ∆Gt0 for the initial and transition states with the changes in the activation parameters accompanying changes in the CO-solvent concentration. The transfer enthalpies of the reactant were obtained from calorimetric measurements.


2021 ◽  
pp. 116913
Author(s):  
Márcio José da Silva ◽  
Diego Morais Chaves ◽  
Sukarno Olavo ferreira ◽  
Rene Chagas da Silva ◽  
Jose Balena Gabriel Filho ◽  
...  

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