Heterophase Pt/Eg-Catalyzed Hydrosilylation in Droplet Microfluidics: Spectral Monitoring and Efficient 3d-Printed Reactors DOI
Andrei A. Tereshchenko, Irina K. Goncharova, Alexander D. Zagrebaev

et al.

Published: Jan. 1, 2024

Hydrosilylation of alkenes is an industrially important catalytic reaction for producing organоsilanes. This process often based on the homogeneous Pt-catalysts. Given high cost platinum and its irretrievable "scattering", new approaches that can reduce consumption are goal in modern chemistry. Heterophase (biphase) systems hydrosilylation offer additional advantages terms activity, product separation, recycling. However, large-scale synthesis heterophase conditions complicated by constrained mass heat transfer. To address these challenges, we have developed a microfluidic system hydrosilylation, using our previously proposed sustainable convenient-to-handle Pt/EG-catalytic (EG – ethylene glycol). The droplet regime improves transfer while being compatible with laboratory spectral diagnostics. Using combination online Raman diagnostics offline characterization, provide insights into improved rates inside thin capillaries, effects catalyst dilution, variation activity upon aging work summarized several key methodological aspects implementation microfluidics catalysis: generation, guiding, time-resolved monitoring. We demonstrated application 3D-printed reactors compact design units 3D-complex topology. These results open perspectives scaling automation biphasic reactions.

Language: Английский

Prospects in Sustainable Hydrosilylation by Biphase Catalysis DOI
Irina K. Goncharova, I. P. Beletskaya, Ashot V. Arzumanyan

et al.

ChemCatChem, Journal Year: 2024, Volume and Issue: 16(15)

Published: April 5, 2024

Abstract This concept addresses the main economic, environmental, scientific and technological issues associated with use of homogeneous Pt‐catalysts in important industrial hydrosilylation process. The development biphase catalysis is proposed as most promising approach. One solution we suggest ethylene glycol (EG) a medium catalysis. We have previously shown that EG Pt‐catalyzed serves not only but also mild reducing agent Pt‐ions to Pt 0 , well an effective ligand for preparation mononuclear 1 ‐complexes. These zero valent platinum complexes are single‐atom catalysts (SAC) high activity hydrosilylation, stability during storage ability be recycled multiple times (~40 times). option using atomic catalyst allows us combine advantages heterogeneous catalysts.

Language: Английский

Citations

4
Recyclable and air-stable colloidal manganese nanoparticles catalyzed hydrosilylation of alkenes with tertiary silane DOI Creative Commons
Nobuki Katayama, Kazuki Tabaru, Tatsuki Nagata

et al.

RSC Advances, Journal Year: 2025, Volume and Issue: 15(3), P. 1776 - 1781

Published: Jan. 1, 2025

The manganese nanoparticles we synthesized demonstrated high catalytic activity, achieving 15 800 TON in the hydrosilylation of alkenes with tertiary silanes, and remained recyclable across multiple cycles.

Language: Английский

Citations

0
Blue LED photolytic method for the synthesis of 1,4-dihydropyridine derivatives from benzo [b]thiophene-2-carbaldehyde DOI Creative Commons

Anushka Servesh,

Sankar Ganesh Ramaraj, J. Rajprasad

et al.

Chemical Engineering and Processing - Process Intensification, Journal Year: 2025, Volume and Issue: unknown, P. 110205 - 110205

Published: Feb. 1, 2025

Language: Английский

Citations

0
Heterophase Pt/EG-catalyzed hydrosilylation in droplet microfluidics: Spectral monitoring and efficient 3D-printed reactors DOI
Andrei A. Tereshchenko, Irina K. Goncharova, Alexander D. Zagrebaev

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 498, P. 155016 - 155016

Published: Aug. 23, 2024

Language: Английский

Citations

1
A Hybrid Benzothiazolyl-NHC Ligand with a Flexible −CH2– Linker and Its Cationic Rh(I) Complex That Catalyzes the Olefin Hydrosilylation DOI

Soumajit Nath,

Sudip Baguli,

Debabrata Mukherjee

et al.

Organometallics, Journal Year: 2024, Volume and Issue: 43(20), P. 2458 - 2465

Published: April 16, 2024

A C,N-bidentate hybrid benzothiazolyl-NHC ligand (L) with a flexible −CH2– linker between the two moieties is devised. Classical deprotonation of corresponding imidazolium bromide LHBr by M2O (M = Cu, Ag) affords [(L)MBr] complexes 1 Cu) and 2 Ag), where L monodentate binding through NHC only. transmetalation [Rh(COD)2]BF4 from both gives cationic Rh(I) complex [(L)Rh(COD)]BF4 (3), which turns out to be decent air-stable catalyst for olefin hydrosilylation giving anti-Markovnikov addition products under ambient benchtop conditions.

Language: Английский

Citations

0
Heterophase Pt/Eg-Catalyzed Hydrosilylation in Droplet Microfluidics: Spectral Monitoring and Efficient 3d-Printed Reactors DOI
Andrei A. Tereshchenko, Irina K. Goncharova, Alexander D. Zagrebaev

et al.

Published: Jan. 1, 2024

Hydrosilylation of alkenes is an industrially important catalytic reaction for producing organоsilanes. This process often based on the homogeneous Pt-catalysts. Given high cost platinum and its irretrievable "scattering", new approaches that can reduce consumption are goal in modern chemistry. Heterophase (biphase) systems hydrosilylation offer additional advantages terms activity, product separation, recycling. However, large-scale synthesis heterophase conditions complicated by constrained mass heat transfer. To address these challenges, we have developed a microfluidic system hydrosilylation, using our previously proposed sustainable convenient-to-handle Pt/EG-catalytic (EG – ethylene glycol). The droplet regime improves transfer while being compatible with laboratory spectral diagnostics. Using combination online Raman diagnostics offline characterization, provide insights into improved rates inside thin capillaries, effects catalyst dilution, variation activity upon aging work summarized several key methodological aspects implementation microfluidics catalysis: generation, guiding, time-resolved monitoring. We demonstrated application 3D-printed reactors compact design units 3D-complex topology. These results open perspectives scaling automation biphasic reactions.

Language: Английский

Citations

0