scholarly journals Benzotriazolium Ionic Liquid Immobilized on Periodic Mesoporous Organosilica as an Effective Reusable Catalyst for Chemical Fixation of CO2 into Cyclic Carbonates

2020 ◽  
Vol 93 (2) ◽  
Author(s):  
Jing Rui Li ◽  
Yu Lin Hu
Keyword(s):  
Ionic Liquid ◽  
Reusable Catalyst ◽  
Chemical Fixation ◽  
Cyclic Carbonates ◽  
Periodic Mesoporous Organosilica ◽  
Mesoporous Organosilica

scholarly journals Highly Active Benzotriazolium Ionic Liquid-modified Periodic Mesoporous Organosilica Supported Samarium/Lanthanum Nanoparticles for Sustainable Transformation of Carbon Dioxide to Cyclic Carbonates

2020 ◽  
Vol 64 (3) ◽  
Author(s):  
Hu Yu Lin ◽  
Bing Liu Xiao ◽  
Yang Liu
Keyword(s):  
Ionic Liquid ◽  
Cycloaddition Reaction ◽  
Catalytic Performance ◽  
Significant Loss ◽  
Cyclic Carbonates ◽  
Periodic Mesoporous Organosilica ◽  
Highly Active ◽  
Mesoporous Organosilica ◽  
High Yields ◽  
Lanthanum Acetate

Abstract. A novel type of multifunctional nanocatalysts (La-/Sm-PMO-ILCl) based on the immobilization of benzotriazolium ionic liquid and further incorporation of samarium acetate or lanthanum acetate onto periodic mesoporous organosilica were afforded for the cycloaddition of CO2 and epoxides to produce cyclic carbonates. In consequence of the intramolecular synergistic effect between samarium sites of periodic mesoporous organosilica and homogeneously dispersed basic sites of ionic liquid, the powerful catalyst Sm-PMO-ILCl offered superior catalytic performance with ultra high yields and selectivities in the cycloaddition reaction without the addition of any solvent and cocatalyst. Moreover, the catalyst Sm-PMO-ILCl could be easily recovered by filtration and reused for at least five runs without any significant loss of its catalytic activity. Resumen. Se prepararon nuevos nano catalizadores (La-(Sm-PMO-ILC1) por la vía de inmovilización del líquido iónico benzotriazolium y adición se acetato de samario o acetato de lantano en organosilice mesoporosa. Los catalizadores se evaluaron en la ciclo adición de CO2 y epóxidos para producir carbonatos cíclicos. El efecto sinérgico intramolecular entre los sitios de samario de la organosilice y los sitios básicos del líquido iónico homogéneamente distribuidos inducen una alta actividad catalítica en el catalizador Sm-PMO-ILC1. Así, con este catalizador se obtuvo alta conversión y selectividad en la reacción de ciclo adición, sin agregar solvente ni co-catalizador. Además, el catalizador Sm-PMO-ILC1 podría recuperarse fácilmente por filtración y reusado por al menos 5 corridas sin pérdida significativa de su actividad catalítica.

Periodic mesoporous organosilica with ionic-liquid framework supported manganese: an efficient and recyclable nanocatalyst for the unsymmetric Hantzsch reaction

RSC Advances ◽  
2015 ◽  
Vol 5 (17) ◽  
pp. 13087-13094 ◽  
Author(s):  
M. Nasr-Esfahani ◽  
D. Elhamifar ◽  
T. Amadeh ◽  
B. Karimi
Keyword(s):  
Ionic Liquid ◽  
Hantzsch Reaction ◽  
Periodic Mesoporous Organosilica ◽  
Catalytic Application ◽  
Mesoporous Organosilica ◽  
Ordered Mesoporous

We have described the catalytic application of a manganese containing ionic liquid-based ordered mesoporous organosilica in the synthesis of polyhydroquinolines.

Sign in / Sign up

Export Citation Format

Share Document