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- W2366481296 abstract "p-tert- butylcalix[4] arene and its derivative tetramethoxy p-tert- butylcalix[4] arenetetraketone(L)have been synthesized.The extraction of metal ions,including alkali metdl ions,akaline earth metal ions,and several transition metal ions such as Cu￣(2+),Zn￣(2+),Ni￣(2+), Cd￣(2+)andHg￣(2+), is studied.It is found that the extractant L has the special extraction efficiency for Na￣+.The extraction mechanism is also discussed in this paper,and the extraction equation can be writ-ten as:Na￣++Pi￣-+L=NaItPi_(o),where NaLPi represents the composition of the complex,The-extraction equilibrium constant for Na￣+ has been determined to be lg K_(ex)=6. 59 at 30±1℃." @default.
- W2366481296 created "2016-06-24" @default.
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- W2366481296 date "1994-01-01" @default.
- W2366481296 modified "2023-09-24" @default.
- W2366481296 title "COORDINATION CHEMISTRY OF CALIXARENE III.SYNTHESIS AND EXTRACTION STUDIES OF TETRA-METHOXY p-TERT-BUTYLCALIX[4] ARENE TETRAKETONE" @default.
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