Hydroformylation of high olefin in biphasic catalytic system: effect of electronic and steric factor of phosphine ligands

2004 ◽  
Vol 5 (12) ◽  
pp. 739-741 ◽  
Author(s):  
Xia Wang ◽  
Hai Yan Fu ◽  
Xianjun Li ◽  
Hua Chen
Keyword(s):  
Catalytic System ◽  
Steric Factor ◽  
Phosphine Ligands ◽  
System Effect ◽  
High Olefin ◽  
Biphasic Catalytic System

Studies on 1-dodecene hydroformylation in biphasic catalytic system containing mixed micelle

2003 ◽  
Vol 194 (1-2) ◽  
pp. 13-17 ◽  
Author(s):  
Min Li ◽  
Yaozhong Li ◽  
Hua Chen ◽  
Yu-e He ◽  
Xianjun Li
Keyword(s):  
Catalytic System ◽  
Mixed Micelle ◽  
Biphasic Catalytic System

Long chain olefin hydroformylation in biphasic catalytic system—how the reaction is accelerated

2003 ◽  
Vol 242 (1) ◽  
pp. 85-88 ◽  
Author(s):  
Liangbing Wang ◽  
Hua Chen ◽  
Yu-e He ◽  
Yaozhong Li ◽  
Min Li ◽  
...  
Keyword(s):  
Catalytic System ◽  
Olefin Hydroformylation ◽  
Biphasic Catalytic System ◽  
Long Chain

scholarly journals A Use-Store-Reuse (USR) Concept in Catalytic HCOOH Dehydrogenation: Case-Study of a Ru-Based Catalytic System for Long-Term USR under Ambient O2

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 481
Author(s):  
Marinos Theodorakopoulos ◽  
Maria Solakidou ◽  
Yiannis Deligiannakis ◽  
Maria Louloudi
Keyword(s):  
Catalytic System ◽  
Water System ◽  
Catalytic Efficiency ◽  
Ambient Air ◽  
Catalytic Performance ◽  
H2 Production ◽  
Repeated Use ◽  
Biphasic Catalytic System ◽  
First Time

Commercial use of H2 production catalysts requires a repeated use/stop/store and reuse of the catalyst. Ideally, this cycle should be possible under ambient O2. Herein we exemplify the concept of Use-Store-Reuse (USR) of a (Ru-phosphine) catalyst in a biphasic catalytic system, for H2 production via dehydrogenation of HCOOH. The catalytic system can operate uninterrupted for at least four weeks, including storage and reuse cycles, with negligible loss of its catalytic efficiency. The catalytic system consisted of a RuP(CH2CH2PPh2)3 (i.e. RuPP3) in (tri-glyme/water) system, using KOH as a cocatalyst, to promote HCOOH deprotonation. In a USR cycle of 1 week, followed by storage for three weeks under ambient air and reuse, the system achieved in total TONs > 90,000 and TOFs > 4000 h−1. Thus, for the first time, a USR concept with a readily available stable ruthenium catalyst is presented, operating without any protection from O2 or light, and able to retain its catalytic performance.

A Simple and Selective Biphasic Catalytic System for the Oxidative Polymerization of 2,6-Dimethylphenol

2002 ◽  
Vol 344 (8) ◽  
pp. 890-893 ◽  
Author(s):  
Patrick Gamez ◽  
John A. P. P. van Dijk ◽  
Willem L. Driessen ◽  
Ger Challa ◽  
Jan Reedijk
Keyword(s):  
Catalytic System ◽  
Oxidative Polymerization ◽  
Biphasic Catalytic System

scholarly journals Reactions of alkenes and alkynes with formaldehyde catalyzed by rhodium systems containing phosphine ligands

2017 ◽  
Vol 61 (2) ◽  
Author(s):  
Merlín Rosales ◽  
Beatriz González ◽  
Jessely Molina ◽  
Homero Pérez ◽  
María Modroño-Alonso ◽  
...  
Keyword(s):  
Catalytic System ◽  
Allyl Alcohol ◽  
Phosphine Ligands ◽  
Transfer Hydrogenation ◽  
Cationic Complex ◽  
Reaction Conditions

The reaction of alkenes (allyl alcohol, styrene and C6 alkenes) with formaldehyde was efficiently performed by using Rh precatalysts formed <em>in situ</em> by the addition of triphenylphosphine (PPh<sub>3</sub>), 1,2-bis(diphenylphosphino)ethane (dppe) or 1,1,1-tris(diphenylphosphinomethyl) ethane (triphos) to the complex Rh(acac)(CO)<sub>2</sub> at 130ºC in 1,4-dioxane, yielding their corresponding aldehydes; the best catalytic system was Rh(acac)(CO)<sub>2</sub>/2dppe, which generates the cationic complex [Rh(k<sup>2</sup>-P,P-dppe)<sub>2</sub>]<sup>+</sup>. However, the reaction of phenylacetylene with formaldehyde under the same reaction conditions generated styrene, which was found to be the product of transfer hydrogenation from formaldehyde.

Structural aspects of the Co/ZrO2 catalytic system: Effect of the chemical synthesis

2005 ◽  
Vol 92 (2-3) ◽  
pp. 327-332 ◽  
Author(s):  
Ileana D. Lick ◽  
Alfredo Carrascull ◽  
Marta Ponzi ◽  
Esther N. Ponzi ◽  
Irma L. Botto
Keyword(s):  
Chemical Synthesis ◽  
Catalytic System ◽  
System Effect ◽  
Structural Aspects
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