Comparative study of activity of H+ form of type y, mordenite, and ZSM-5 zeolites in toluene disproportionation reaction

1982 ◽  
Vol 31 (5) ◽  
pp. 1042-1045
Author(s):  
V. Penchev ◽  
V. Mavrodinova ◽  
Khr Minchev
Keyword(s):  
Comparative Study ◽  
Disproportionation Reaction ◽  
Toluene Disproportionation

Kinetics and optimization of the toluene disproportionation reaction over solid acid catalysts

1987 ◽  
Vol 33 (1) ◽  
pp. 39-53 ◽  
Author(s):  
Jen-Ray Chang ◽  
Fong-Chang Sheu ◽  
Ying-Ming Cheng ◽  
Jung-Chung Wu
Keyword(s):  
Solid Acid ◽  
Disproportionation Reaction ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Toluene Disproportionation

Toluene Disproportionation Reaction over Modified HY and LaHY Catalysts

1990 ◽  
Vol 63 (1) ◽  
pp. 91-106 ◽  
Author(s):  
Li-Jen Leu ◽  
Ben-Chang Kang ◽  
Shwu-Tzy Wu ◽  
Jung-Chung Wu*
Keyword(s):  
Disproportionation Reaction ◽  
Toluene Disproportionation

Evaluation of the Properties of ZSM-5 Type Zeolites Modified with CexMg1–xAl2O4 Nanopowders in the Toluene Disproportionation Reaction

2021 ◽  
Author(s):  
F. Sh. Kerimli ◽  
T. M. Ilyasli ◽  
S. E. Mammadov ◽  
N. F. Akhmedova ◽  
E. S. Mammadov ◽  
...  
Keyword(s):  
Disproportionation Reaction ◽  
Toluene Disproportionation

scholarly journals Synthesis and modification of beta zeolite for use in toluene disproportionation reaction

DYNA ◽  
2016 ◽  
Vol 83 (196) ◽  
pp. 184-193
Author(s):  
Santiago Mesa Espinal ◽  
Johana Arboleda ◽  
Adriana Echavarría
Keyword(s):  
Liquid Phase ◽  
Entire Range ◽  
Surface Passivation ◽  
External Surface ◽  
Zeolite Beta ◽  
Disproportionation Reaction ◽  
Beta Zeolite ◽  
Toluene Disproportionation ◽  
Temperature And Pressure ◽  
Inert Layer

<p>In this paper zeolite Beta was synthesized and characterized by XRD, ATG, ATD, XRF and SEM. Subsequently various modifications were made using a surface passivation process in liquid phase with tetraethylorthosilicate (TEOS), using two loads of TEOS and three passivation cycles, in order to obtain six catalysts. These materials were characterized by NH3-TPD and tested in tolune disproportionation reaction, under different conditions of pressure and temperature. As modification cycles were increased for each catalyst, there was a change in the acidity of the solids, mainly due to deposition of an inert layer of silica on the external surface. These results were confirmed with the improvement in para-selectivity and decreasing in conversion. Despite zeolite Beta is a large pore zeolite, an improvement of the para-selectivity was obtained, achieving almost stable values for the entire range of temperature and pressure conditions.</p>

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