Matches in SemOpenAlex for { <https://semopenalex.org/work/W2948513130> ?p ?o ?g. }
Showing items 1 to 69 of
69
with 100 items per page.
- W2948513130 abstract "The present study is focused on the effect of the TTABr/MX/H2O-nanoparticles on the rate of piperidinolysis of ionized phenyl salicylate where TTABr represents tetradecyltrimethylammonium bromide and MX = NaCl, NaBr and CnH2n+1CO2Na with n = 4, 5, 6 and 7, and sodium salts of halobenzoic acids. Pseudo-first-order rate constant (kobs) for the piperidinolysis of ionized phenyl salicylate at 35°C and constant concentration of [PSa-]T = 0.2 mM, [Pip]T = 0.1 M, [NaOH] = 30 mM, [TTABr]T and different [MX] follow an empirical relationship which gives two empirical constants, Xkcat and KX/S. The removal of PSa- from bulk aqueous phase to the pseudo micellar phase by counterion X through ion exchange process X-/PSa- are responsible for the monotonic increase in kobs when the concentrations of MX were increased. The value of ion exchange constant/relative counterion (X) binding constant, RXBr were calculated from the relationship; RXBr = Xkcat/Brkcat. The values of RXBr for X = C4H9CO2-, C5H11CO2-, C6H13CO2-, and C7H15CO2- are increasing with increase in the number of alkyl chain of counterion X. Larger values of KXBror RXBr was observed for X = 4-halobenzoate ions than that for X = 2-halobenzoate ions due to isomeric factors. The values of KXBror RXBr for X = 2- and 4-halobenzoate ions determined in the presence of TTABr were compared with previously determined KXBror RXBr values in the presence of cetyltrimethylammonium bromide (CTABr). Steady shear rheological measurements were carried out on TTABr/MX/H2O nanoparticles system at [TTABr]T = 15 mM for MX = C7H15CO2Na, 2-FBzNa, 4-FBzNa, 2-ClBzNa, 4-ClBzNa, 2-BrBzNa, 4-BrBzNa, 2-IBzNa and 4-IBzNa. Newtonian fluid behavior was shown by TTABr/MX/H2O systems for MX = C7H15CO2Na, 2-FBzNa, 4-FBzNa, 2-ClBzNa, 2-BrBzNa and 2-IBzNa. The plots of zero shear viscosity (η0) vs. [MX] at 35°C and 15 mM TTABr shows the presence of viscosity maximum for MX = 4-ClBzNa, 4-BrBzNa and 4-IBzNa which indicates the presence of wormlike micelles in the micellar systems. Plots of η0 vs. [MX] of TTABr/MX/H2O systems at different temperature ranges from 20 to 55°C show nonlinear and linear Arrhenius behavior for MX = 2-FBzNa, 4-FBzNa and 4-ClBzNa, 4-BrBzNa, 4-IBzNa, respectively. The value of KXBror RXBr were found to correlate with the rheological results obtained in the present study." @default.
- W2948513130 created "2019-06-14" @default.
- W2948513130 creator A5043917368 @default.
- W2948513130 creator A5053282674 @default.
- W2948513130 date "2017-12-01" @default.
- W2948513130 modified "2023-09-27" @default.
- W2948513130 title "A semi empirical kinetic approach to study nanoparticle catalysis for piperidinolysis of ionized phenyl salicylate in the presence of inert salts / Muhammad Azri Mohd Noh" @default.
- W2948513130 hasPublicationYear "2017" @default.
- W2948513130 type Work @default.
- W2948513130 sameAs 2948513130 @default.
- W2948513130 citedByCount "0" @default.
- W2948513130 crossrefType "dissertation" @default.
- W2948513130 hasAuthorship W2948513130A5043917368 @default.
- W2948513130 hasAuthorship W2948513130A5053282674 @default.
- W2948513130 hasConcept C113196181 @default.
- W2948513130 hasConcept C117760992 @default.
- W2948513130 hasConcept C121332964 @default.
- W2948513130 hasConcept C145148216 @default.
- W2948513130 hasConcept C148898269 @default.
- W2948513130 hasConcept C178790620 @default.
- W2948513130 hasConcept C179104552 @default.
- W2948513130 hasConcept C185592680 @default.
- W2948513130 hasConcept C2776300020 @default.
- W2948513130 hasConcept C2778868470 @default.
- W2948513130 hasConcept C34814092 @default.
- W2948513130 hasConcept C43617362 @default.
- W2948513130 hasConcept C62520636 @default.
- W2948513130 hasConcept C93391505 @default.
- W2948513130 hasConceptScore W2948513130C113196181 @default.
- W2948513130 hasConceptScore W2948513130C117760992 @default.
- W2948513130 hasConceptScore W2948513130C121332964 @default.
- W2948513130 hasConceptScore W2948513130C145148216 @default.
- W2948513130 hasConceptScore W2948513130C148898269 @default.
- W2948513130 hasConceptScore W2948513130C178790620 @default.
- W2948513130 hasConceptScore W2948513130C179104552 @default.
- W2948513130 hasConceptScore W2948513130C185592680 @default.
- W2948513130 hasConceptScore W2948513130C2776300020 @default.
- W2948513130 hasConceptScore W2948513130C2778868470 @default.
- W2948513130 hasConceptScore W2948513130C34814092 @default.
- W2948513130 hasConceptScore W2948513130C43617362 @default.
- W2948513130 hasConceptScore W2948513130C62520636 @default.
- W2948513130 hasConceptScore W2948513130C93391505 @default.
- W2948513130 hasLocation W29485131301 @default.
- W2948513130 hasOpenAccess W2948513130 @default.
- W2948513130 hasPrimaryLocation W29485131301 @default.
- W2948513130 hasRelatedWork W1619879653 @default.
- W2948513130 hasRelatedWork W1970240669 @default.
- W2948513130 hasRelatedWork W1978277388 @default.
- W2948513130 hasRelatedWork W1980235209 @default.
- W2948513130 hasRelatedWork W1992062335 @default.
- W2948513130 hasRelatedWork W2006040301 @default.
- W2948513130 hasRelatedWork W2013605048 @default.
- W2948513130 hasRelatedWork W2054816701 @default.
- W2948513130 hasRelatedWork W2061171937 @default.
- W2948513130 hasRelatedWork W2077745082 @default.
- W2948513130 hasRelatedWork W2110114590 @default.
- W2948513130 hasRelatedWork W2110315287 @default.
- W2948513130 hasRelatedWork W2169533136 @default.
- W2948513130 hasRelatedWork W2182752300 @default.
- W2948513130 hasRelatedWork W2207475234 @default.
- W2948513130 hasRelatedWork W2284883963 @default.
- W2948513130 hasRelatedWork W2618813693 @default.
- W2948513130 hasRelatedWork W2809822016 @default.
- W2948513130 hasRelatedWork W2947525241 @default.
- W2948513130 hasRelatedWork W621670315 @default.
- W2948513130 isParatext "false" @default.
- W2948513130 isRetracted "false" @default.
- W2948513130 magId "2948513130" @default.
- W2948513130 workType "dissertation" @default.