Catalyst design using an inverse strategy: From mechanistic studies on inverted model catalysts to applications of oxide-coated metal nanoparticles

2018 ◽  
Vol 73 (4) ◽  
pp. 117-152 ◽  
Author(s):  
Jing Zhang ◽  
J. Will Medlin
Keyword(s):  
Metal Nanoparticles ◽  
Catalyst Design ◽  
Model Catalysts ◽  
Mechanistic Studies ◽  
Coated Metal

scholarly journals A rational pre-catalyst design for bis-phosphine mono-oxide palladium catalyzed reactions

2017 ◽  
Vol 8 (4) ◽  
pp. 2841-2851 ◽  
Author(s):  
Yining Ji ◽  
Hongming Li ◽  
Alan M. Hyde ◽  
Qinghao Chen ◽  
Kevin M. Belyk ◽  
...  
Keyword(s):  
Rational Design ◽  
Catalyst Design ◽  
Mechanistic Studies ◽  
Catalyst Activation ◽  
Palladium Catalyzed ◽  
Catalyzed Reactions

Detailed mechanistic studies of a Pd-catalyzed asymmetric C–N coupling led to a rational design of a new series of bis-phosphine mono-oxides ligated Pd(ii) pre-catalysts that allow for reliable and complete catalyst activation.

Single-Layer Graphene Coated-Metal Nanoparticles for Water Splitting

2021 ◽  
Vol MA2021-01 (9) ◽  
pp. 470-470
Author(s):  
Choel-Hwan Shin ◽  
Gisang Park ◽  
Chunfei Zhang ◽  
Jong-Sung Yu
Keyword(s):  
Metal Nanoparticles ◽  
Water Splitting ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Layer Graphene ◽  
Coated Metal

Mechanistic Studies on a Cooperative NHC Organocatalysis/Palladium Catalysis System: Uncovering Significant Lessons for Mixed Chiral Pd(NHC)(PR3) Catalyst Design

2017 ◽  
Vol 139 (12) ◽  
pp. 4443-4451 ◽  
Author(s):  
Chang Guo ◽  
Daniel Janssen-Müller ◽  
Mirco Fleige ◽  
Andreas Lerchen ◽  
Constantin G. Daniliuc ◽  
...  
Keyword(s):  
Palladium Catalysis ◽  
Catalyst Design ◽  
Mechanistic Studies

Organocatalyzed coupling of carbon dioxide with epoxides for the synthesis of cyclic carbonates: catalyst design and mechanistic studies

2017 ◽  
Vol 7 (13) ◽  
pp. 2651-2684 ◽  
Author(s):  
M. Alves ◽  
B. Grignard ◽  
R. Mereau ◽  
C. Jerome ◽  
T. Tassaing ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Catalyst Design ◽  
Cyclic Carbonates ◽  
Mechanistic Studies

The coupling of carbon dioxide (CO2) with epoxides with the formation of cyclic carbonates is a highly attractive 100% atom economic reaction. It represents a greener and safer alternative to the conventional synthesis of cyclic carbonates from diols and toxic phosgene.

scholarly journals Supported rhenium nanoparticle catalysts for acceptorless dehydrogenation of alcohols: structure–activity relationship and mechanistic studies

2016 ◽  
Vol 6 (15) ◽  
pp. 5864-5870 ◽  
Author(s):  
Kenichi Kon ◽  
Wataru Onodera ◽  
Takashi Toyao ◽  
Ken-ichi Shimizu
Keyword(s):  
Metal Nanoparticles ◽  
Structure Activity Relationship ◽  
Activity Relationship ◽  
Mechanistic Studies ◽  
Acid Base ◽  
Title Reaction ◽  
Nanoparticle Catalysts ◽  
Cooperative Catalysis ◽  
Structure Activity

Mechanistic and structure–activity relationship studies show cooperative catalysis of Re0 sites on the supported Re metal nanoparticles and acid–base sites of alumina for the title reaction.

Field Demonstration of a 1.5 MW Industrial Gas Turbine With a Low Emissions Catalytic Combustion System

2000 ◽  
Vol 123 (3) ◽  
pp. 550-556 ◽  
Author(s):  
D. Y. Yee ◽  
K. Lundberg ◽  
C. K. Weakley
Keyword(s):  
Gas Turbine ◽  
Engine Performance ◽  
Silicon Valley ◽  
Electric Utility ◽  
Catalyst Design ◽  
Test Facility ◽  
Load Range ◽  
Coated Metal ◽  
Utility Grid ◽  
Catalytic Combustor

An electric utility grid connected test facility has been established at Silicon Valley Power (SVP) in Santa Clara, California to validate the reliability, availability, maintainability, and durability (RAMD) of a commercial-ready catalytic combustor system (XONON). Installed in the Silicon Valley Test Facility (SVTF) is a 1.5MW Kawasaki MIA-13A gas turbine fitted with a catalytic combustor. The gas turbine package is controlled by a Woodward MicroNet control system. The combustor utilizes a two stage lean premix preburner system to obtain the required catalyst inlet temperatures and low NOx over the operating load range. The fuel-air mixer incorporates counter rotating swirlers to mix the catalyst fuel and air to achieve the desired uniformity. The patented catalyst design is composed of specially coated metal foils. Overall engine performance was measured and the emissions were continuously monitored. As of Dec. 1999, emissions of NOx<2.5 ppmv and CO and UHC<6 ppmv have been maintained at 100 percent load for over 3700 hours of operation on the utility grid. The turbine continues to operated 24 hours a day, 7 days per week with commercial levels of unit availability.

scholarly journals CO2-Mediated Pd-Catalyzed Stereo- and Regioselective Arylation of Free Allylamines

2020 ◽  
Author(s):  
Vinod Landge ◽  
Justin Maxwell ◽  
Pratibha Chand-Thakuri ◽  
Mohit Kapoor ◽  
Evan Diemler ◽  
...  
Keyword(s):  
Catalyst Design ◽  
Powerful Method ◽  
Mechanistic Studies ◽  
Atom Economy ◽  
Biologically Relevant ◽  
Mild Conditions ◽  
Selective Functionalization ◽  
Michael Acceptors ◽  
Key Features ◽  
Terminal Olefins

Mizoroki-Heck couplings are a powerful method for elaborating alkene feedstocks. While selective functionalization of terminal olefins has been achieved by catalyst design, selective functionalization of internal olefins has generally required use of directing groups except in the case of Michael acceptors. Allylamine substrates have typically required protection to be suitable for these reactions, decreasing the step and atom economy of these procedures. Herein we demonstrate that the addition of CO<sub>2</sub> (dry ice) allows for the reproducible stereospecific arylation of both secondary and primary allylamines in the presence of a Pd<sup>II</sup> catalyst. Notably, the product 3,3’-diarylallylamine motif is prevalent in a variety of biologically-relevant structures, and this method represents the most straightforward synthesis of these targets to date. Key features of the method are the ability to access relatively mild conditions that facilitate a broad substrate scope, as well as direct diarylation of terminal allylamine substrates. In addition, several complex and therapeutically-relevant molecules are included to demonstrate the utility of the transformation. Mechanistic studies point to an amine-directed reaction where CO<sub>2</sub> serves to protect the substrate and product from degradation.

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