Robust Mn(iii) N-pyridylporphyrin-based biomimetic catalysts for hydrocarbon oxidations: heterogenization on non-functionalized silica gel versus chloropropyl-functionalized silica gel

2020 ◽  
Vol 49 (45) ◽  
pp. 16404-16418
Author(s):  
Victor Hugo A. Pinto ◽  
Nathália K. S. M. Falcão ◽  
Bárbara Mariz-Silva ◽  
Maria Gardennia Fonseca ◽  
Júlio S. Rebouças
Keyword(s):  
Silica Gel ◽  
Functionalized Silica ◽  
Biomimetic Catalysts ◽  
Silica Supports ◽  
Hydrocarbon Oxidations ◽  
Mn Porphyrins

Simple neutral and cationic Mn porphyrins were immobilized on ordinary chromatographic silica or chloropropyl-functionalized silica supports to yield efficient and reusable biomimetic catalysts for C–H activation and oxyfunctionalization of alkanes.

Synthesis of a rhodium(I) carbonyl complex with a chiral aminodiphosphine ligand and its immobilization onto aminopropyl functionalized silica gel

2010 ◽  
Vol 63 (7) ◽  
pp. 1107-1117 ◽  
Author(s):  
Pankaj Das ◽  
Malabika Borah ◽  
Chandan Sarmah ◽  
Pradip K. Gogoi ◽  
Lidia M. Alekseenko ◽  
...  
Keyword(s):  
Silica Gel ◽  
Carbonyl Complex ◽  
Functionalized Silica

Formation of an anchored copper(II) complex on a thiourea-functionalized silica gel by in situ modification of the tethered ligating function

1994 ◽  
Vol 221 (1-2) ◽  
pp. 183-186 ◽  
Author(s):  
Daniele Cauzzi ◽  
Giovanni Predieri ◽  
Antonio Tiripicchio ◽  
Roberto Zanoni ◽  
Camillo Giori
Keyword(s):  
Silica Gel ◽  
Functionalized Silica ◽  
In Situ Modification

Borane-functionalized silica supports

2002 ◽  
Vol 185 (1-2) ◽  
pp. 167-177 ◽  
Author(s):  
Sumate Charoenchaidet ◽  
Sumaeth Chavadej ◽  
Erdogan Gulari
Keyword(s):  
Functionalized Silica ◽  
Silica Supports

scholarly journals Preparation of polycarboxylic acid-functionalized silica supported Pt catalysts and their applications in alkene hydrosilylation

RSC Advances ◽  
2018 ◽  
Vol 8 (36) ◽  
pp. 20379-20393 ◽  
Author(s):  
Dongyun Shao ◽  
Youxin Li
Keyword(s):  
Silica Gel ◽  
Pt Catalysts ◽  
Functionalized Silica ◽  
Polycarboxylic Acid ◽  
Supported Pt Catalysts ◽  
Aminopolycarboxylic Acid

Three novel Pt catalysts were prepared by loading Pt onto aminopolycarboxylic acid functionalized silica gel and were used in alkene hydrosilylation.

Analysis of Polychlonnated Biphenyls in Fatty Biological Matrixes by On-Line Supercritical Fluid Extraction and Supercritical Fluid Cleanup

1995 ◽  
Vol 78 (4) ◽  
pp. 1051-1054 ◽  
Author(s):  
Earl G Alley ◽  
Guozhen Lu
Keyword(s):  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Silica Gel ◽  
Supercritical Co2 ◽  
Functionalized Silica ◽  
Fluid Extraction ◽  
Extraction And Separation ◽  
On Line ◽  
Chromatographic Media ◽  
Level Analysis

Abstract We present a method that combines the extraction of polychlonnated biphenyls (PCBs) and their separation from relatively large quantities of fat in biological matrixes by combined supercritical fluid extraction and separation. Cyano-functionalized silica gel, silica gel, aluminum oxide, Florisil, 3-aminopropyl- functionalized silica gel, and octadecyl-functionalized silica gel were tested for suitability as chromatographic media for separation of PCBs from lipids. Silica gel, 3-aminopropyl-functionalized silica gel, and Florisil adequately separated PCBs from lipids when eluted with supercritical CO2. Florisil allowed both the extraction of PCBs and their separation from lipids in PCB-spiked chicken egg and fish. Two grams of sample containing PCBs at 0.125 μg/g was sufficient for subsequent separations and the low-level analysis required for the more toxic PCB components.

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