Reactivity of various Ru/CeO2 catalysts during ozonation of succinic acid aqueous solutions

2000 ◽  
Vol 24 (4) ◽  
pp. 229-233 ◽  
Author(s):  
Nathalie Karpel Vel Leitner ◽  
Florence Delanoë ◽  
Benito Acedo ◽  
Bernard Legube
1895 ◽  
Vol 37 (2) ◽  
pp. 361-379
Author(s):  
A. Crum Brown ◽  
James Walker

In our former paper we described the results obtained by electrolysing concentrated aqueous solutions of the ethyl-potassium salts of normal saturated dibasic acids. The chief products were shown to be diethyl compound ethers of the same homologous series, and the formation of these compound ethers was shown to occur in accordance with the equation: 2C2H5·O·ĊO·R˝·CO·O- = C2H5·O·CO·R˝R˝CO·O·C2H5 + 2CO2. We now find that precisely similar results are obtained by electrolysing the corresponding compounds derived from saturated dibasic acids with side chains. We have thus been able to effect the synthesis of acids of the succinic acid series, in which hydrogen is symmetrically replaced by alcohol radicals of the form CnH2n+1.


2006 ◽  
Vol 82 (3-4) ◽  
pp. 579-590 ◽  
Author(s):  
I. Riipinen ◽  
B. Svenningsson ◽  
M. Bilde ◽  
A. Gaman ◽  
K.E.J. Lehtinen ◽  
...  

1992 ◽  
Vol 47 (3) ◽  
pp. 493-498 ◽  
Author(s):  
Alexander Apelblat ◽  
Josef Barthel

Abstract Conductance measurements of aqueous solutions of succinic acid and of di-sodium succinate were performed from 278.15 to 308.15 K and the limiting conductances λ0 (1/2 Succ2- ) are reported. The Waiden product is independent of temperature: λ0(1/2 Succ2-)*η(T) = 0.503 ± 0.001. The salt conductances closely obey the Onsager limiting law. The evaluation of the equilibrium constants for the primary and secondary steps of dissociation, K1 and K2, and the limiting conductances of the hydrosuccinate ion, λ0(HSucc-), are discussed using the Quint and Viallard conductance equation


Processes ◽  
2019 ◽  
Vol 7 (9) ◽  
pp. 559 ◽  
Author(s):  
Agata Marecka-Migacz ◽  
Piotr Tomasz Mitkowski ◽  
Jerzy Antczak ◽  
Jacek Różański ◽  
Krystyna Prochaska

Nanofiltration of aqueous solutions of succinic acid with the addition of sodium hydroxide or magnesium hydroxycarbonate has been investigated experimentally and modeled with the comprehensively described Donnan–Steric partitioning model. The experimental retentions of acid at the same pH varied between 16% and 78%, while the estimated total volume membrane charge densities were in the range of −35.73 and +875.69 mol/m3. This work presents a novel insight into the modeling of nanofiltration and investigates the relations between the estimated total volume membrane charge densities, ionic strength, and component concentration on the performance of ceramic membrane. In addition, this study takes into consideration other parameters such as pH regulation and viscosities of solutions.


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