scholarly journals Schiff base-functionalized mesoporous silicas (MCM-41, HMS) as Pb(ii) adsorbents

RSC Advances ◽  
2018 ◽  
Vol 8 (1) ◽  
pp. 176-189 ◽  
Author(s):  
Daniela F. Enache ◽  
Eugenia Vasile ◽  
Claudia Maria Simonescu ◽  
Daniela Culita ◽  
Eugeniu Vasile ◽  
...  
Keyword(s):  
Schiff Base ◽  
Mesoporous Silicas ◽  
High Sorption ◽  
Mcm 41

MCM-41@salen, HMS-C12@salen and HMS-C16@salen sorbents present high sorption capacities for Pb(ii) and are suitable materials for the removal of Pb(ii).

Preparation of Immobilized Chromium Schiff Base Complexes and their Catalytic Performance for Olefins Epoxidation

2014 ◽  
Vol 692 ◽  
pp. 240-244
Author(s):  
Gong De Wu ◽  
Xiao Li Wang ◽  
Zhi Li Zhai
Keyword(s):  
Hydrogen Peroxide ◽  
Schiff Base ◽  
Elemental Analysis ◽  
Catalytic Performance ◽  
Schiff Base Complexes ◽  
Metal Centers ◽  
Chemical Measurements ◽  
Physico Chemical ◽  
Immobilized Complexes ◽  
Mcm 41

A series of transition metal alanine-salicylaldehyde Schiff base chromium (III) complexes immobilized on MCM-41 were prepared and characterized by various physico-chemical measurements such as FIIR, XRD, HRTEM, N2 sorption and elemental analysis. The immobilized complexes were effective and stable catalysts for the epoxidation of styrene and cyclohexene with 30% hydrogen peroxide. Moreover, the metal centers were found to play important roles in the catalytic performance of immobilized complex catalysts.

scholarly journals A phosphine-free, atom-efficient cross-coupling reaction of triorganoindiums with acyl chlorides catalyzed by immobilization of palladium(0) in MCM-41

RSC Advances ◽  
2017 ◽  
Vol 7 (67) ◽  
pp. 42570-42578 ◽  
Author(s):  
Jiankang Miao ◽  
Bin Huang ◽  
Haiyi Liu ◽  
Mingzhong Cai
Keyword(s):  
Schiff Base ◽  
Schiff Base Complex ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Free Atom ◽  
Acyl Chlorides ◽  
Base Complex ◽  
Cross Coupling Reaction ◽  
Mcm 41

The phosphine-free, atom-efficient cross-coupling of triorganoindiums with acyl chlorides has been achieved using a recyclable MCM-41-immobilized palladium(0)–Schiff base complex.

scholarly journals Functionalized Ordered Mesoporous Silicas (MCM-41): Synthesis and Applications in Catalysis

Catalysts ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 617 ◽  
Author(s):  
Gabriel Martínez-Edo ◽  
Alba Balmori ◽  
Iris Pontón ◽  
Andrea Martí del Rio ◽  
David Sánchez-García
Keyword(s):  
Mesoporous Silica ◽  
Pore Structure ◽  
Metallic Nanoparticles ◽  
Mesoporous Silicas ◽  
Acid Catalysts ◽  
Catalytic Systems ◽  
Research Attention ◽  
Ordered Mesoporous ◽  
Regioselective Functionalization ◽  
Mcm 41

Mesoporous silica sieves are among the most studied nano-objects due to their stable pore structure and easy preparation. In particular, MCM-41 have attracted increasing research attention due to their chemical versatility. This review focuses on the synthesis and regioselective functionalization of MCM-41 to prepare catalytic systems. The topics covered are: mono and di-functionalized MCM-41 as basic and acid catalysts, catalysts based on metallic complexes and heteropolyacids supported onto MCM-41, metallic nanoparticles embed onto functionalized MCM-41 and magnetic MCM-41 for catalytic purposes.

Modification of MCM-41 and SBA-15 mesoporous silicas by imidazolium ionic liquids

2012 ◽  
Vol 87 (1) ◽  
pp. 108-113 ◽  
Author(s):  
M. I. Onishchenko ◽  
I. A. Tyablikov ◽  
E. E. Knyazeva ◽  
V. V. Chernyshev ◽  
A. V. Yatsenko ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Mesoporous Silicas ◽  
Imidazolium Ionic Liquids ◽  
Mcm 41
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