scholarly journals Linear scaling relationships and volcano plots in homogeneous catalysis – revisiting the Suzuki reaction

2015 ◽  
Vol 6 (12) ◽  
pp. 6754-6761 ◽  
Author(s):  
Michael Busch ◽  
Matthew D. Wodrich ◽  
Clémence Corminboeuf
Keyword(s):  
Homogeneous Catalysis ◽  
Heterogeneous Catalysts ◽  
Suzuki Reaction ◽  
Homogeneous System ◽  
Linear Scaling ◽  
Scaling Relationships ◽  
Volcano Plots ◽  
System P ◽  
First Time

Volcano plots, commonly used to identify attractive heterogeneous catalysts are applied, for the first time, to a prototypical homogeneous system.

scholarly journals Data-powered augmented volcano plots for homogeneous catalysis

2020 ◽  
Vol 11 (44) ◽  
pp. 12070-12080 ◽  
Author(s):  
Matthew D. Wodrich ◽  
Alberto Fabrizio ◽  
Benjamin Meyer ◽  
Clemence Corminboeuf
Keyword(s):  
Homogeneous Catalysis ◽  
Catalytic Cycle ◽  
Linear Scaling ◽  
Scaling Relationships ◽  
Reference Profile ◽  
Energy Profiles ◽  
Volcano Plots

Augmented volcano plots, a tool for comparing and visualizing the similarity of a number of complete catalytic cycle energy profiles to that of an ideal reference profile without relying on linear scaling relationships, are introduced.

Scaling relationships and volcano plots of homogeneous transition metal catalysis

2020 ◽  
Vol 49 (12) ◽  
pp. 3652-3657
Author(s):  
Li-Cheng Yang ◽  
Xin Hong
Keyword(s):  
Transition Metal ◽  
Transition Metal Catalysis ◽  
Linear Scaling ◽  
Metal Catalysis ◽  
Scaling Relationships ◽  
Volcano Plots

This Frontier article highlights the recent applications of linear scaling relationships and volcano plots in homogeneous transition metal catalysis.

Scaling Relationships and Volcano Plots in Homogeneous Catalysis

2020 ◽  
Vol 11 (20) ◽  
pp. 8518-8526
Author(s):  
Megha Anand ◽  
Brian Rohr ◽  
Michael J. Statt ◽  
Jens K. Nørskov
Keyword(s):  
Homogeneous Catalysis ◽  
Scaling Relationships ◽  
Volcano Plots

Dissolution and Performing Homogeneous Photocatalysis of Polymeric Carbon Nitride

2018 ◽  
Author(s):  
Chaofeng Huang ◽  
Jing Wen ◽  
Yanfei Shen ◽  
Fei He ◽  
Li Mi ◽  
...  
Keyword(s):  
Conjugated Polymer ◽  
Carbon Nitride ◽  
Heterogeneous Catalysts ◽  
Methane Sulfonic Acid ◽  
Environment Friendly ◽  
The Poor ◽  
Catalytic Sites ◽  
Homogeneous Photocatalysis ◽  
Polymeric Carbon ◽  
First Time

<a></a><a>As a metal-free conjugated polymer, carbon nitride (CN) has attracted tremendous attention as heterogeneous (photo)catalysts. </a><a></a><a>By following prototype of enzymes, making all catalytic sites of accessible via homogeneous reactions is a promising approach toward maximizing CN activity, but hindered due to </a><a></a><a>the poor insolubility of CN</a>. Herein, we report the dissolution of CN in environment-friendly methane sulfonic acid and the homogeneous photocatalysis driven by CN for the first time with the activity boosted up to 10-times, comparing to the heterogeneous counterparts. Moreover, facile recycling and reusability, the <a>hallmark</a> of heterogeneous catalysts, were kept for the homogeneous CN photocatalyst via reversible precipitation using poor solvents. It opens new vista of CN in homogeneous catalysis and offers a successful example of polymeric catalysts in bridging gaps of homo/heterogeneous catalysis.

Phosphorus Containing Porous Organic Polymers: Synthetic Techniques and Applications in Organic Synthesis and Catalysis

2021 ◽  
Author(s):  
Pramod Kumar ◽  
Animesh Das ◽  
Biplab Maji
Keyword(s):  
Organic Synthesis ◽  
Homogeneous Catalysis ◽  
Heterogeneous Catalysts ◽  
Organic Polymer ◽  
Organic Polymers ◽  
Porous Organic Polymers ◽  
Porous Organic Polymer ◽  
Phosphorus Containing

The phosphorous-containing porous organic polymer is a trending material for the synthesis of heterogeneous catalysts. Decades of investigations have established phosphines as versatile ligands in homogeneous catalysis. Recently, phosphine-based heterogeneous...

Lewis Acid-Promoted Suzuki Reaction using Palladium Chloride Anchored on a Polymer as a Catalyst

2008 ◽  
Vol 61 (8) ◽  
pp. 610 ◽  
Author(s):  
Guozhi Fan ◽  
Hanjun Zhang ◽  
Siqing Cheng ◽  
Zhandong Ren ◽  
Zhijun Hu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Lewis Acid ◽  
Lewis Acids ◽  
Heterogeneous Catalysts ◽  
Suzuki Reaction ◽  
Cross Coupling ◽  
Palladium Chloride ◽  
Coupling Reactions ◽  
Cross Coupling Reactions ◽  
Recoverable Catalyst

Palladium chloride anchored on polystyrene modified by 5-amino-1,10-phenanthroline was prepared and used as an efficient recoverable catalyst for Suzuki cross-coupling reactions. The heterogeneous catalysts can be easily separated from the reaction mixture and reused for five cycles without significant Pd leaching and loss of catalytic activity. Rate enhancement in the Suzuki reaction by Lewis acids was also studied.

A novel enantioselective synthesis of 6H-dibenzopyran derivatives by combined palladium/norbornene and cinchona alkaloid catalysis

2015 ◽  
Vol 13 (8) ◽  
pp. 2260-2263 ◽  
Author(s):  
Di Xu ◽  
Li Dai ◽  
Marta Catellani ◽  
Elena Motti ◽  
Nicola Della Ca’ ◽  
...  
Keyword(s):  
Catalytic System ◽  
Enantioselective Synthesis ◽  
Cinchona Alkaloid ◽  
System P ◽  
First Time

Chiral dibenzopyran derivatives were obtained by cinchona alkaloid, as organocatalyst, in combination, for the first time, with palladium/norbornene catalytic system.

Direct dehydrogenation of isobutane to isobutene over Zn-doped ZrO2 metal oxide heterogeneous catalysts

2018 ◽  
Vol 8 (19) ◽  
pp. 4916-4924 ◽  
Author(s):  
Yang Liu ◽  
Chengjie Xia ◽  
Qi Wang ◽  
Lei Zhang ◽  
Ao Huang ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Heterogeneous Catalysts ◽  
First Time

A series of unconventional nano-sized Zn-doped ZnZrO-x catalysts are applied for the first time to the direct dehydrogenation of isobutane to isobutene.

Systems theory

2017 ◽  
Author(s):  
Anastasia Marinopoulou
Keyword(s):  
Systems Theory ◽  
Multiple Realities ◽  
Traditional Epistemology ◽  
System P ◽  
History Of ◽  
Scientific Truth ◽  
Scientific System ◽  
First Time ◽  
Methodology Of Science ◽  
Scientific Purpose

In his systems’ theory, Luhmann attempts to redefine communication, and associates it with information. For Luhmann, communication is distinct from action (Handeln), and the rationality of the scientific system resides in the notion of Zweck, or in the ends of the sciences towards action. For the first time in the epistemological history of modernity, rationality is understood as a certain scientific purpose of action and not as the critique of scientific truth and validity of reason. The schism that Luhmann brought about between ‘traditional’ epistemology (reconsidered now as novel) and the ‘critical’ theory of science (seen by Luhmann as ‘traditional’) was irredeemable. In the following pages, I maintain that all evidence to the contrary such a divergence was inherent to modernity.Drawing on the Schützean model of multiple realities, Luhmann manages to blur the distinction between instrumentality and rationality by relativizing both within systemic complexity. According to Luhmann, complexity characterizes a multifaceted social system, such as science itself. However, I argue that where complexity, in Luhmann, interprets the systemic, it also employs presentism and partial situationalism to explain the essence and methodology of science as a system.

From Dalton to the Discovery of the Periodic System

2013 ◽  
Author(s):  
Eric Scerri
Keyword(s):  
Periodic System ◽  
Quantitative Data ◽  
Quantitative Characteristic ◽  
Good Deal ◽  
Ancient Greek ◽  
System P ◽  
Quantitative Property ◽  
To Come ◽  
First Time

Our story begins, somewhat arbitrarily, in the English city of Manchester around the turn of the nineteenth century. There, a child prodigy by the name of John Dalton, at the tender age of fifteen is teaching in a school with his older brother. Within a few years, John Dalton’s interests have developed to encompass meteorology, physics, and chemistry. Among the questions that puzzle him is why the various component gases in the air such as oxygen, nitrogen, and carbon dioxide do not separate from each other. Why does the mixture of gases in the air remain as a homogeneous mixture? As a result of pursuing this question, Dalton develops what is to become modern atomic theory. The ultimate constituents of all substances, he supposes, are hard microscopic spheres or atoms that were first discussed by the ancient Greek philosophers and taken up again by modern scientists like Newton, Gassendi, and Boscovich. But Dalton goes a good deal further than all of these thinkers in establishing one all-important quantitative characteristic for each kind of atom, namely its weight. This he does by considering quantitative data on chemical experiments. For example, he finds that the ratio for the weight in which hydrogen and oxygen combine together is one to eight. Dalton assumes that water consists of one atom of each of these two elements. He takes a hydrogen atom to have a weight of 1 unit and therefore reasons that oxygen must have a weight of 8 units. Similarly, he deduces the weights for a number of other atoms and even molecules as we now call them. For the first time the elements acquire a quantitative property, by means of which they may be compared. This feature will eventually lead to an accurate classification of all the elements in the form of the periodic system, but this is yet to come. Before that can happen the notion of atoms provokes tremendous debates and disagreements among the experts of Dalton’s day.

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