Gas-Phase Lithium Cation Basicities of Acetophenones: A Linear Relationship between Lithium Cation and Proton Basicities

2007 ◽  
Vol 80 (1) ◽  
pp. 195-203 ◽  
Author(s):  
Hideaki Maeda ◽  
Maki Irie ◽  
Soe Than ◽  
Kiyoshi Kikukawa ◽  
Masaaki Mishima
Keyword(s):  
Linear Relationship ◽  
Gas Phase ◽  
Lithium Cation

Gas-phase basicity of simple amides toward proton and lithium cation: an experimental and theoretical study

1999 ◽  
Vol 5 (1) ◽  
pp. 259 ◽  
Author(s):  
Marta Herreros ◽  
Jean- François Gal ◽  
Pierre- Charles Maria ◽  
Michèle Decouzon
Keyword(s):  
Gas Phase ◽  
Theoretical Study ◽  
Lithium Cation

Study of the pressure drop in dust scrubber affected by liquid flowability

2019 ◽  
Vol 233 (5) ◽  
pp. 1066-1073 ◽  
Author(s):  
Xiaochuan Li ◽  
Tao Wei ◽  
Xinhao Xu ◽  
Reyna M Knight ◽  
Jiahang Li
Keyword(s):  
Pressure Drop ◽  
Drag Coefficient ◽  
Linear Relationship ◽  
Gas Phase ◽  
Force Balance ◽  
Liquid Level ◽  
Gas Velocity ◽  
Two Phase ◽  
Total Drag ◽  
Quadratic Curve

The complexity of the gas-liquid two-phase flow results in equally complicated pressure drop characteristics for self-excited wet dust scrubbers. In this paper, the pressure drop of the dust scrubber was studied by measuring the total pressure drop R and the differential liquid level Δ H versus the gas velocity v at different initial liquid level b0 values, combined with the liquid flowability. The results showed that the dust scrubber varied its total drag coefficient by changing the differential liquid level Δ H of the liquid-phase and then adjusting the gas-liquid two-phase force balance ahead of and behind the choke. Under the influence of liquid flowability, the throttling strength α exhibited a linear relationship with the gas velocity of the dust scrubber when b0 ≤ 0 mm. The Δ H-v and R- v characteristics of the dust scrubber varied with different values of b0 and v. When b0 > 0, the Δ H-v curve and R- v curve exhibited an explicit quadratic curve relationship. When b0 ≤ 0 mm, the Δ H-v curve and R- v curve exhibited an explicit linear relationship, where the Δ H-v curves can be expressed by a linear equation Δ H = khv+Δ H0, and the gas-phase pressure drop R can be approximately calculated using the differential liquid level Δ H. The liquid flowability can change the choke-sectional to change the total drag coefficient, which reduced in multiple folds with an increase in the gas velocity.

Exceptionally High Proton and Lithium Cation Gas-Phase Basicity of the Anti-Diabetic Drug Metformin

2017 ◽  
Vol 121 (45) ◽  
pp. 8706-8718 ◽  
Author(s):  
Ewa D. Raczyńska ◽  
Jean-François Gal ◽  
Pierre-Charles Maria ◽  
Piotr Michalec ◽  
Marcin Zalewski
Keyword(s):  
Gas Phase ◽  
Lithium Cation ◽  
High Proton

Measuring Gas-Phase Basicities Relative to the Lithium Cation by Mass Spectrometry: A Physical Chemistry Experiment

2012 ◽  
Vol 89 (11) ◽  
pp. 1476-1478 ◽  
Author(s):  
Jean-François Gal ◽  
Charly Mayeux ◽  
Lionel Massi ◽  
Mohamed Major ◽  
Laurence Charles ◽  
...  
Keyword(s):  
Physical Chemistry ◽  
Mass Spectrometry ◽  
Gas Phase ◽  
Lithium Cation ◽  
Gas Phase Basicities ◽  
Chemistry Experiment

Gas-Phase Lithium Cation Affinity of Glycine

2015 ◽  
Vol 21 (3) ◽  
pp. 149-159 ◽  
Author(s):  
Sophie Bourcier ◽  
Ru Xuan Chia ◽  
Rosa Ngo Biboum Bimbong ◽  
Guy Bouchoux
Keyword(s):  
Gas Phase ◽  
Lithium Cation ◽  
Cation Affinity

Revised and Expanded Scale of Gas-Phase Lithium Cation Basicities. An Experimental and Theoretical Study

2000 ◽  
Vol 104 (12) ◽  
pp. 2824-2833 ◽  
Author(s):  
Peeter Burk ◽  
Ilmar A. Koppel ◽  
Ivar Koppel ◽  
Riho Kurg ◽  
Jean-Francois Gal ◽  
...  
Keyword(s):  
Gas Phase ◽  
Theoretical Study ◽  
Lithium Cation

A comparative QSAR study of SVM and PPR in the correlation of lithium cation basicities

2009 ◽  
Vol 74 (1) ◽  
pp. 217-241 ◽  
Author(s):  
Alan R. Katritzky ◽  
Yueying Ren ◽  
Svetoslav H. Slavov ◽  
Mati Karelson
Keyword(s):  
Support Vector Machine ◽  
Gas Phase ◽  
Projection Pursuit ◽  
The Other ◽  
Lithium Cation ◽  
Support Vector ◽  
Qsar Study ◽  
Projection Pursuit Regression ◽  
Physico Chemical ◽  
Insight Into

Correlation of gas-phase lithium cation basicities (LCB) of 259 diverse compounds extends the published datasets utilizing multilinear, support vector machine (SVM) and projection pursuit regression (PPR) modeling. The best multiple linear regression (BMLR) method implemented in CODESSA was used to: (i) build multiparameter linear QSPR models and (ii) select set of descriptors for further treatment by the SVM and PPR. The external predictivity and the performance of each of the above methods was estimated and compared to those of the other techniques. The PPR method produced results superior to SVM, which in turn outperformed MLR. The physico-chemical interpretation of each of the descriptors provides new insight into the mechanism of LCB interactions.

Gas-phase lithium cation basicity of histamine and its agonist 2-(β-aminoethyl)-pyridine

2007 ◽  
Vol 267 (1-3) ◽  
pp. 315-323 ◽  
Author(s):  
M. Hallmann ◽  
E.D. Raczyńska ◽  
J.-F. Gal ◽  
P.-C. Maria
Keyword(s):  
Gas Phase ◽  
Lithium Cation
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