scholarly journals A versatile, immobilized gold catalyst for the reductive amination of aldehydes in batch and flow

2018 ◽  
Vol 3 (5) ◽  
pp. 714-721 ◽  
Author(s):  
Adela I. Carrillo ◽  
Patricia Llanes ◽  
Miquel A. Pericàs
Keyword(s):  
Gold Nanoparticles ◽  
Mesoporous Silica ◽  
Continuous Flow ◽  
Reductive Amination ◽  
Gold Catalyst

A process for the reductive amination of aldehydes in continuous flow catalyzed by gold nanoparticles immobilized onto mesoporous silica has been developed.

scholarly journals C-N Bond Formation by Consecutive Continuous-Flow Reductions towards A Medicinally Relevant Piperazine Derivative

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 2040
Author(s):  
Zsolt Fülöp ◽  
Péter Bana ◽  
István Greiner ◽  
János Éles
Keyword(s):  
Antipsychotic Drug ◽  
Catalytic Hydrogenation ◽  
Continuous Flow ◽  
Reductive Amination ◽  
Reduction Method ◽  
Bond Formation ◽  
Aluminum Salt ◽  
Line Extraction ◽  
Piperazine Derivative ◽  
Step Procedure

A new, continuous-flow consecutive reduction method was developed for the C-N bond formation in the synthesis of the key intermediate of the antipsychotic drug cariprazine. The two-step procedure consists of a DIBAL-H mediated selective ester reduction conducted in a novel, miniature alternating diameter reactor, followed by reductive amination using catalytic hydrogenation on 5% Pt/C. The connection of the optimized modules was accomplished using an at-line extraction to prevent precipitation of the aluminum salt byproducts.

scholarly journals Catalytic Activity of Beta-Cyclodextrin-Gold Nanoparticles Network in Hydrogen Evolution Reaction

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 118
Author(s):  
Qui Quach ◽  
Erik Biehler ◽  
Ahmed Elzamzami ◽  
Clay Huff ◽  
Julia M. Long ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Activity ◽  
Gold Catalyst ◽  
Hydrogen Gas ◽  
Hydrolysis Reaction ◽  
X Ray Diffraction ◽  
Beta Cyclodextrin ◽  
Transmission Electron ◽  
Production Of Hydrogen ◽  
Climate Crisis

The current climate crisis warrants investigation into alternative fuel sources. The hydrolysis reaction of an aqueous hydride precursor, and the subsequent production of hydrogen gas, prove to be a viable option. A network of beta-cyclodextrin capped gold nanoparticles (BCD-AuNP) was synthesized and subsequently characterized by Powder X-Ray Diffraction (P-XRD), Fourier Transform Infrared (FTIR), Transmission Electron Microscopy (TEM), and Ultraviolet-Visible Spectroscopy (UV-VIS) to confirm the presence of gold nanoparticles as well as their size of approximately 8 nm. The catalytic activity of the nanoparticles was tested in the hydrolysis reaction of sodium borohydride. The gold catalyst performed best at 303 K producing 1.377 mL min−1 mLcat−1 of hydrogen. The activation energy of the catalyst was calculated to be 54.7 kJ/mol. The catalyst resisted degradation in reusability trials, continuing to produce hydrogen gas in up to five trials.

scholarly journals AuNP and ssDNA capped mesoporous silica nanoparticles for laser controlled drug release

RSC Advances ◽  
2019 ◽  
Vol 9 (60) ◽  
pp. 34958-34962 ◽  
Author(s):  
Lu Zhou ◽  
Guojie Liu ◽  
Yang Wang ◽  
Jianling Liu ◽  
Yajie Zhang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Drug Release ◽  
Mesoporous Silica ◽  
Silica Nanoparticles ◽  
Mesoporous Silica Nanoparticles ◽  
Controlled Drug Release

Gold nanoparticles were linked to the surface of mesoporous silica through a polyA oligonucleotide and infrared stimulation controlled drug release.

An ionic liquid-mesoporous silica blend as a novel adsorbent for the adsorption and recovery of palladium ions, and its applications in continuous flow study and as an industrial catalyst

RSC Advances ◽  
2016 ◽  
Vol 6 (32) ◽  
pp. 26668-26678 ◽  
Author(s):  
Shivani Sharma ◽  
Chia-Ming Wu ◽  
Ranjit T. Koodali ◽  
N. Rajesh
Keyword(s):  
Ionic Liquid ◽  
Mesoporous Silica ◽  
Continuous Flow ◽  
Aliquat 336 ◽  
Spent Catalyst ◽  
Industrial Catalyst ◽  
Flow Study

Aliquat-336@SBA-15 blend adsorbent effectively adsorbs Pd from a spent catalyst.

Periodically organized mesoporous silica thin layers as host for phosphinines-stabilized gold nanoparticles: UV–visible sensing of small thiols and phosphines

2006 ◽  
Vol 495 (1-2) ◽  
pp. 280-285 ◽  
Author(s):  
Frédéric Goettmann ◽  
Audrey Moores ◽  
Cédric Boissière ◽  
Pascal Le Floch ◽  
Clément Sanchez
Keyword(s):  
Gold Nanoparticles ◽  
Mesoporous Silica ◽  
Thin Layers ◽  
Uv Visible

Mesoporous silica sorbent with gold nanoparticles for solid-phase extraction of organochlorine pesticides in water samples

2021 ◽  
pp. 462729
Author(s):  
Enric Pellicer-Castell ◽  
Carolina Belenguer-Sapiña ◽  
Pedro Amorós ◽  
Jamal El Haskouri ◽  
José Manuel Herrero-Martínez ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Mesoporous Silica ◽  
Solid Phase Extraction ◽  
Organochlorine Pesticides ◽  
Water Samples ◽  
Solid Phase ◽  
Phase Extraction ◽  
Pesticides In Water
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