FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2070598032> ?p ?o ?g. }

• W2070598032 endingPage "332" @default.
• W2070598032 startingPage "287" @default.
• W2070598032 abstract "Heulandite is a common rock-forming zeolite that exhibits wide solid solution of extraframework cations, presumably due to ready ion exchange with aqueous solutions. In order to provide a quantitative basis for interpreting and predicting the distribution of aqueous species between heulandite and aqueous solutions, ion exchange equilibrium between heulandite and aqueous solutions with respect to the binary cation pairs Ca2+ –K+, Ca2+ –Na+, K+ –Na+, K+ –Sr2+, Na+ –Sr2+, and Ca2+ –Sr2+ was investigated. Homoionic Ca-, K-, and Na-heulandites prepared from natural heulandite were equilibrated with 0.1 N Cl− solutions containing various proportions of the cations in a given binary pair at 55 and 85 °C to define isotherms describing partitioning of the cations over a wide range of heulandite and solution composition with respect to the cations in each pair. In general, the experiments equilibrated rapidly, within 11 to 15 weeks at 55 °C and 3 to 4 weeks at 85 °C. The exception was the Ca2+ –Sr2+ binary exchange, which did not equilibrate even after 3 months at 55 °C and 4 weeks at 85 °C. Slow exchange of Sr2+ for Ca2+ also prohibited preparation of homoionic Sr-heulandite from the natural (Ca-rich) heulandite within 10 weeks in 2N SrCl2 solution at 90 °C, although near homoionic Sr-heulandite was produced by exchange of K- and Na-heulandite. Experimentally determined isotherms were used to derive equilibrium constants for the ion exchange reactions and asymmetric Margules models describing the extent of non-ideality in extraframework solid solutions in heulandite. Regressed equilibrium constants for Ca2+-Na+, Ca2+-K+, and K+-Na+ binary cation pairs at 55 °C are internally consistent among each other (complying with the triangle rule), indicating good accuracy of these data. The maximum departure from internal consistency among the equilibrium constants for three binary pairs was 900 J per mole of charge equivalents (eq) for the 55 °C experiments and 2300 J eq−1 for the 85 °C experiments. The applicability of the present experimental results and thermodynamic models was assessed by calculating the composition of heulandite in Icelandic geothermal systems from known compositions using the regressed thermodynamic properties of Ca2+-Na+ exchange at 85 °C. Calculations predict an average Ca mole fraction [defined as Ca/(Ca+Na)] in heulandite of 0.74, in excellent agreement with observed compositions of heulandite from geothermal and metamorphic systems in Iceland (0.75). Thermodynamic data for heulandite ion-exchange derived in this study can be used to predict partitioning of Ca, K, Na, and Sr between heulandite and aqueous solutions in geologic systems. Because heulandite is the most effective sink for Sr in basaltic aquifers that have undergone zeolite facies metamorphism, the experimental results of this study will provide essential data for modeling Sr transport in aquifers in low-grade metabasalts." @default.
• W2070598032 created "2016-06-24" @default.
• W2070598032 creator A5064445837 @default.
• W2070598032 date "2004-04-01" @default.
• W2070598032 modified "2023-10-14" @default.
• W2070598032 title "Experimental determination of thermodynamic properties of ion-exchange in heulandite: Binary ion-exchange experiments at 55 and 85 C involving Ca2+, Sr2+, Na+, and K+" @default.
• W2070598032 cites W1502293370 @default.
• W2070598032 cites W1508359632 @default.
• W2070598032 cites W1554417187 @default.
• W2070598032 cites W1575837728 @default.
• W2070598032 cites W1787347094 @default.
• W2070598032 cites W1893068185 @default.
• W2070598032 cites W1964719915 @default.
• W2070598032 cites W1973923281 @default.
• W2070598032 cites W2003550042 @default.
• W2070598032 cites W2007448272 @default.
• W2070598032 cites W2008794894 @default.
• W2070598032 cites W2010859707 @default.
• W2070598032 cites W2012664314 @default.
• W2070598032 cites W2014583614 @default.
• W2070598032 cites W2017737343 @default.
• W2070598032 cites W2020976223 @default.
• W2070598032 cites W2021011794 @default.
• W2070598032 cites W2021864871 @default.
• W2070598032 cites W2024975374 @default.
• W2070598032 cites W2028694486 @default.
• W2070598032 cites W2035597521 @default.
• W2070598032 cites W2036750261 @default.
• W2070598032 cites W2086961600 @default.
• W2070598032 cites W2090968131 @default.
• W2070598032 cites W2092659655 @default.
• W2070598032 cites W2111473359 @default.
• W2070598032 cites W2113915222 @default.
• W2070598032 cites W2116486311 @default.
• W2070598032 cites W2131320965 @default.
• W2070598032 cites W2152759232 @default.
• W2070598032 cites W2162867749 @default.
• W2070598032 cites W2285943276 @default.
• W2070598032 cites W2312991573 @default.
• W2070598032 cites W2324320700 @default.
• W2070598032 cites W2324509108 @default.
• W2070598032 cites W2326381477 @default.
• W2070598032 cites W2337420536 @default.
• W2070598032 cites W2408649113 @default.
• W2070598032 cites W2415629274 @default.
• W2070598032 cites W2426734494 @default.
• W2070598032 cites W2496833452 @default.
• W2070598032 cites W2579317070 @default.
• W2070598032 cites W3122428800 @default.
• W2070598032 cites W584354179 @default.
• W2070598032 doi "https://doi.org/10.2475/ajs.304.4.287" @default.
• W2070598032 hasPublicationYear "2004" @default.
• W2070598032 type Work @default.
• W2070598032 sameAs 2070598032 @default.
• W2070598032 citedByCount "22" @default.
• W2070598032 countsByYear W20705980322012 @default.
• W2070598032 countsByYear W20705980322013 @default.
• W2070598032 countsByYear W20705980322014 @default.
• W2070598032 countsByYear W20705980322015 @default.
• W2070598032 countsByYear W20705980322017 @default.
• W2070598032 countsByYear W20705980322018 @default.
• W2070598032 countsByYear W20705980322019 @default.
• W2070598032 countsByYear W20705980322020 @default.
• W2070598032 countsByYear W20705980322021 @default.
• W2070598032 countsByYear W20705980322022 @default.
• W2070598032 countsByYear W20705980322023 @default.
• W2070598032 crossrefType "journal-article" @default.
• W2070598032 hasAuthorship W2070598032A5064445837 @default.
• W2070598032 hasBestOaLocation W20705980321 @default.
• W2070598032 hasConcept C117760992 @default.
• W2070598032 hasConcept C121332964 @default.
• W2070598032 hasConcept C145148216 @default.
• W2070598032 hasConcept C178790620 @default.
• W2070598032 hasConcept C185592680 @default.
• W2070598032 hasConcept C33923547 @default.
• W2070598032 hasConcept C48372109 @default.
• W2070598032 hasConcept C94375191 @default.
• W2070598032 hasConcept C97355855 @default.
• W2070598032 hasConceptScore W2070598032C117760992 @default.
• W2070598032 hasConceptScore W2070598032C121332964 @default.
• W2070598032 hasConceptScore W2070598032C145148216 @default.
• W2070598032 hasConceptScore W2070598032C178790620 @default.
• W2070598032 hasConceptScore W2070598032C185592680 @default.
• W2070598032 hasConceptScore W2070598032C33923547 @default.
• W2070598032 hasConceptScore W2070598032C48372109 @default.
• W2070598032 hasConceptScore W2070598032C94375191 @default.
• W2070598032 hasConceptScore W2070598032C97355855 @default.
• W2070598032 hasIssue "4" @default.
• W2070598032 hasLocation W20705980321 @default.
• W2070598032 hasLocation W20705980322 @default.
• W2070598032 hasOpenAccess W2070598032 @default.
• W2070598032 hasPrimaryLocation W20705980321 @default.
• W2070598032 hasRelatedWork W2035215415 @default.
• W2070598032 hasRelatedWork W2051047040 @default.
• W2070598032 hasRelatedWork W2069609529 @default.
• W2070598032 hasRelatedWork W2077870550 @default.
• W2070598032 hasRelatedWork W2314625587 @default.
• W2070598032 hasRelatedWork W2331638907 @default.

• next