Mein Leben mit der Wissenschaft

10.47261/1550 ◽  
2021 ◽  
Author(s):  
Gerhard Ertl
Keyword(s):  
Heterogeneous Catalysis ◽  
Surface Science ◽  
Ammonia Synthesis ◽  
Atomic Level ◽  
The Novel ◽  
Active Centers ◽  
Technical Problems ◽  
Basic Concepts ◽  
To Receive ◽  
Kinetics Of

Gerhard Ertl: My Life With Science (Lives in Chemistry–Lebenswerke in der Chemie) Who has had the luck to receive the Nobel Prize as a surprise birthday present? The answer is GERHARD ERTL, born in 1936. In his youth he was interested in music, chemistry, and physics, and started university in Stuttgart followed by Paris and Munich. The door to research opened itself in his diploma thesis. His courage showed itself early on when he was a PhD student, and led him to the novel field of surface science and so to heterogeneous catalysis where he became one of the great pioneers. He discovered at an atomic level the mechanisms and kinetics of ammonia synthesis and CO oxidation. He identified the “active centers” of catalysts—and his line of thought shaped current heterogeneous catalysis that is so important for modern industry and society. Time after time he set out basic concepts for solving important scientific and technical problems—with patience and without any fuss. Typical for Gerhard Ertl!

Gas-phase perspective on the thermodynamics and kinetics of heterogeneous catalysis

2014 ◽  
Vol 4 (9) ◽  
pp. 2741-2755 ◽  
Author(s):  
P. B. Armentrout
Keyword(s):  
Heterogeneous Catalysis ◽  
Transition Metal ◽  
Gas Phase ◽  
Surface Science ◽  
Metal Cluster ◽  
Thermodynamics And Kinetics ◽  
Transition Metal Cluster ◽  
Kinetics Of

Gas-phase studies of small transition metal cluster cations provide thermochemistry of utility to surface science and heterogeneous catalysis.

Cognitive dominants of the conceptual sphere in the novel “of human bondage” by W. S. Maugham

2020 ◽  
Vol 6 (1) ◽  
pp. 48-61
Author(s):  
Olga B. Ponomareva ◽  
Valeriya I. Orlova
Keyword(s):  
Cognitive Linguistics ◽  
Meaning Of Life ◽  
The Novel ◽  
Thought Processes ◽  
New Paradigm ◽  
Comprehensive Description ◽  
Semantic Fields ◽  
Linguistic Representations ◽  
Basic Concepts ◽  
Linguistic Methods

This article presents a comprehensive analysis of the basic concepts that make up the conceptual sphere of the novel “Of Human Bondage” by W. S. Maugham. These concepts act as cognitive dominants of the linguistic consciousness of the protagonist’s linguistic personality in the work under study. The novelty of this research lies in the fact that it is performed within the framework of a new paradigm of linguistics — the cognitive linguistics, which involves the study of mental and linguistic representations of thought processes that occur during the perception of information. Moreover, the novel “Of Human Bondage” by W. S. Maugham has not attracted the attention of linguists-cognitologists previously, which adds to the novelty of this article. In addition, the present study provides a comprehensive description of the basic concepts making up the conceptual sphere of the novel. The linguistic methods of representing various concepts in the analyzed work are determined by the national, personal, cultural, and psychological aspects of Maugham’s thinking. The authors employ a communicative-cognitive methodological analysis proposed by N. S. Bolotnova involving the modeling of textual and intertextual semantic fields of artistic concepts and the analysis of the conceptual sphere of a literary text. The universal concepts RELIGION, LOVE, PASSION, THE MEANING OF LIFE, which constitute the conceptual sphere of the novel by W. S. Maugham “Of Human Bondage”, are analyzed. The main result of the study is that THE MEANING OF LIFE concept is universal, not individual, and it includes other universal concepts, such as RELIGION, LOVE, PASSION, THE MEANING OF LIFE, conceptual metaphors and metonyms, symbols, and other words-associates, which constitute the broad figurative and evaluative periphery of the conceptual sphere of the novel.

scholarly journals The Influence of Varying Fluorination Patterns on the Thermodynamics and Kinetics of Benzenesulfonamide Binding to Human Carbonic Anhydrase II

Biomolecules ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 509 ◽  
Author(s):  
Steffen Glöckner ◽  
Khang Ngo ◽  
Björn Wagner ◽  
Andreas Heine ◽  
Gerhard Klebe
Keyword(s):  
Carbonic Anhydrase ◽  
Carbonic Anhydrase Ii ◽  
The Novel ◽  
Binding Modes ◽  
X Ray ◽  
Structure Activity ◽  
Small Set ◽  
Novel Method ◽  
Human Carbonic Anhydrase ◽  
Kinetics Of

The fluorination of lead-like compounds is a common tool in medicinal chemistry to alter molecular properties in various ways and with different goals. We herein present a detailed study of the binding of fluorinated benzenesulfonamides to human Carbonic Anhydrase II by complementing macromolecular X-ray crystallographic observations with thermodynamic and kinetic data collected with the novel method of kinITC. Our findings comprise so far unknown alternative binding modes in the crystalline state for some of the investigated compounds as well as complex thermodynamic and kinetic structure-activity relationships. They suggest that fluorination of the benzenesulfonamide core is especially advantageous in one position with respect to the kinetic signatures of binding and that a higher degree of fluorination does not necessarily provide for a higher affinity or more favorable kinetic binding profiles. Lastly, we propose a relationship between the kinetics of binding and ligand acidity based on a small set of compounds with similar substitution patterns.

Atomic-level insight into reasonable design of metal-based catalysts for hydrogen oxidation in alkaline electrolytes

2021 ◽  
Author(s):  
Lulu An ◽  
Xu Zhao ◽  
Tonghui Zhao ◽  
Deli Wang
Keyword(s):  
Fuel Cell ◽  
Anion Exchange ◽  
Hydrogen Oxidation ◽  
Anion Exchange Membrane ◽  
Atomic Level ◽  
Alkaline Electrolytes ◽  
Exchange Membrane ◽  
Kinetics Of ◽  
Insight Into ◽  
Hydrogen Utilization

Anion exchange membrane fuel cell (AEMFC) is becoming highly attractive for hydrogen utilization owing to the advantages of employing economic catalysts in alkaline electrolytes. Nevertheless, the kinetics of anodic hydrogen...

scholarly journals Influence of microadditive of carbon dioxide on the kinetics of boiling-up of superheated w-pentane

2021 ◽  
Vol 2039 (1) ◽  
pp. 012027
Author(s):  
S A Perminov ◽  
E V Lipnyagov ◽  
M A Parshakova
Keyword(s):  
High Speed ◽  
Gas Adsorption ◽  
Glass Tube ◽  
Initial Value ◽  
Active Centers ◽  
High Speed Video ◽  
Inner Surface ◽  
Vertical Glass ◽  
Attainable Superheat ◽  
Kinetics Of

Abstract The effect of a low-boiling impurity (CO2 gas <1.5% mol) on the kinetics of boiling-up of superheated n-pentane in a vertical glass tube have been studied by high-speed video (2050 fps). The method of continuous pressure decrease from 2.00 to 0.10 MPa (in the temperature range of 100.2-145.1 °C), as well as the method of measuring the lifetimes of superheated liquids at 0.10 MPa (90.2-134.1 °C) have been used. The inner surface of the tube has two visible defects, one of which defines the boundary of the attainable superheat. After degassing the system, the defects of tube cease to play an appreciable role, the active centers are redistributed. The temperature of the attainable superheat increases from the initial value by 20 °C in tests with gas and by 10 °C in subsequent tests without it. The result obtained may be related to physical gas adsorption on the glass surface during the process of evacuation of the system.

scholarly journals Atomic-level organization of vicinal acid–base pairs through the chemisorption of aniline and derivatives onto mesoporous SBA15

2016 ◽  
Vol 7 (9) ◽  
pp. 6099-6105 ◽  
Author(s):  
Bilel Hamzaoui ◽  
Anissa Bendjeriou-Sedjerari ◽  
Eva Pump ◽  
Edy Abou-Hamad ◽  
Rachid Sougrat ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Heterogeneous Catalysts ◽  
Atomic Level ◽  
Acid Base ◽  
Base Pairs ◽  
High Interest

The design of novel heterogeneous catalysts with multiple adjacent functionalities is of high interest to heterogeneous catalysis.

scholarly journals Imidazolium functionalized carbon nanotubes for the synthesis of cyclic carbonates: reducing the gap between homogeneous and heterogeneous catalysis

2016 ◽  
Vol 6 (24) ◽  
pp. 8418-8427 ◽  
Author(s):  
M. Buaki-Sogó ◽  
A. Vivian ◽  
L. A. Bivona ◽  
H. García ◽  
M. Gruttadauria ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Catalytic Activity ◽  
Heterogeneous Catalysis ◽  
Single Walled Carbon Nanotubes ◽  
The Novel ◽  
Cyclic Carbonates ◽  
Functionalized Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Novel Materials ◽  
Walled Carbon Nanotubes

Single walled carbon nanotubes were functionalized with imidazolium based salts and successfully used as catalysts for the conversion of CO2. The novel materials displayed excellent catalytic activity.

Kinetics of reduction of an iron catalyst for ammonia synthesis

1980 ◽  
Vol 15 (2) ◽  
pp. 285-291 ◽  
Author(s):  
A. Baranski ◽  
J. M. Lagan ◽  
A. Pattek ◽  
A. Reizer
Keyword(s):  
Ammonia Synthesis ◽  
Iron Catalyst ◽  
Kinetics Of ◽  
Kinetics Of Reduction
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