Tungstophosphoric acid/zirconia composites prepared by the sol–gel method: An efficient and recyclable green catalyst for the one-pot synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes

2012 ◽  
Vol 443-444 ◽  
pp. 207-213 ◽  
Author(s):  
Toa S. Rivera ◽  
Alexis Sosa ◽  
Gustavo P. Romanelli ◽  
Mirta N. Blanco ◽  
Luis R. Pizzio
2018 ◽  
Vol 5 (1) ◽  
pp. 49-58 ◽  
Author(s):  
Yu.S. Demidova ◽  
I.L. Simakova ◽  
E.V. Suslov ◽  
K.P. Volcho ◽  
N.F. Salakhutdinov ◽  
...  

Abstract In the current work gold catalysts supported on both commercial oxides and oxides synthesized by the sol-gel method were used for the one-pot alcohol amination of myrtenol. In general, utilization of metal oxides synthesized by the sol-gel method as the gold catalyst support enhanced the knowledge regarding key parameters determining catalytic behavior. Synthesized alumina was characterized by stronger acid sites favoring primary amine accumulation on the catalyst surface, as compared to the commercial oxide. Utilization of mixed metal oxides synthesized by the sol-gel method resulted in the non-additive behavior of different oxides enhancing the catalytic activity. Introduction of ceria into alumina modified the support basicity resulting in more efficient alcohol activation.


2018 ◽  
Vol 479 ◽  
pp. 105-112 ◽  
Author(s):  
Robert E. Przekop ◽  
Piotr Marciniak ◽  
Bogna Sztorch ◽  
Agnieszka Czapik ◽  
Mikołaj Stodolny ◽  
...  

2013 ◽  
Vol 13 (11) ◽  
pp. 7717-7722 ◽  
Author(s):  
Abid Hussain ◽  
Abhijit P. Jadhav ◽  
Yeon Kyung Baek ◽  
Hul Jin Choi ◽  
Jaeho Lee ◽  
...  

2011 ◽  
Vol 8 (2) ◽  
pp. 689-696 ◽  
Author(s):  
Fatemeh F. Bamoharram ◽  
Ali Ahmadpour ◽  
Majid M. Heravi ◽  
Mohammad J. Sane Charkhi

A rapid and efficient one-pot method for the synthesis ofβ-acetamido ketones/esters has been developed in the presence of bulk tungstophosphoric acid and its supported forms on activated carbon as recyclable and eco-friendly catalysts under refluxing conditions. Supported tungstophosphoric acid catalysts containing the same amount of heteropoly acid yielded much higher conversion than bulk form.


2011 ◽  
Vol 58 (2) ◽  
pp. 535-538 ◽  
Author(s):  
Marauo Davis ◽  
Cenk Gümeci ◽  
Courtney Kiel ◽  
Louisa J. Hope-Weeks

2011 ◽  
Vol 102 (3-4) ◽  
pp. 387-394 ◽  
Author(s):  
Maria Turco ◽  
Giovanni Bagnasco ◽  
Claudia Cammarano ◽  
Luca Micoli ◽  
Maurizio Lenarda ◽  
...  

2021 ◽  
Author(s):  
Sreejith Sreekantan ◽  
Arun Arunima Kirali ◽  
Banu Marimuthu

The mesopores/micropores NaZSM-5 was synthesised by sol–gel method. The 5%Al–8%Ni–25%W/NaZSM-5 catalyst exhibited the highest cellulose conversion of 100% with EG yield as high as 89% (C mol%) at moderate reaction conditions which is highly applicable in polymer Industry.


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