Use of Glycolic Acid Derivatives in Determination of Zirconium

Oesper, Ralph E.; Klingenberg, J. J.

doi:10.1021/ac60036a022

Cited by 63 publications

(14 citation statements)

References 3 publications

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“…Such products have been examined as lubricants and die release agents, but have no industrial market at present. Reference has already been made to the waterinsoluble complex acids formed by the reaction in aqueous medium of zirconyl chloride with alphahydroxycarboxylic acids (13). These acids are alkalisoluble, and the neutral or slightly alkaline solutions formed by them dissolution in aqueous alkali have been used extensively in body deodorants.…”

Section: Zirconium In Organic Chemistrymentioning

confidence: 99%

Zirconium chemistry in industry

Blumenthal¹

1962

J. Chem. Educ.

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T h e story of zirconium chemistry in industry starts in the molten rocks of the earth, for the evidence of the behavior of the zirconium atom in the rocks presages the behaviors encountered in the preparation and isolation of the element or its useful compounds. Zirconium is moderately abundant in magmas and the rocks derived from magmas, its concentration in the crust of the earth being roughly equal to that of carbon, i.e., about 0.0270. As siliceous magmas cool, one of the first phases to crystallize is zircon, Zr02.SiOz. Its formation is favored by a moderate excess of acidic oxides in the magma, and i t is particularly likely to crystallize from magmas which yield granites and syenites. Once the zircon has formed, it is extremely stable, and much of the zircon that has formed in nature has survived hundreds of millions of years of geologic change, through upheavals, weathering, and changes in physical and chemical environment. The tetrrh-dral crystals are easily recognized.Even in ancient times, well-formed colorless and colored zircon crystals which had been freed from the matric-s in which they had developed found their way into the arts and ornamentation. Mention is made of the zircon in both Old and New Testaments

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Section: Zirconium In Organic Chemistrymentioning

confidence: 99%

Zirconium chemistry in industry

Blumenthal¹

1962

J. Chem. Educ.

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“…The most common radiochemical methods for the determination of 95Zr are barium fluozirconate precipitation (19), mandelic acid precipitation (20,21), phosphate precipitation (22), 2-thenoyltrifluoroacetone extraction (23,24), and ion exchange from HF solutions (25). Most of the methods are selective but fluoride, oxalate, H202, sulfate, and other common complexing agents interfere in these methods.…”

Section: Radiochemical Determination Of Zirconiummentioning

confidence: 99%

Spectrophotometric and radiochemical determination of zirconium by selective extraction with N-benzoyl-N-phenylhydroxylamine

Villarreal¹,

Young²,

Krsul³

1970

Anal. Chem.

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catalyst. Also, the former did not appear to be as effective a catalyst as the latter for the reduction of cZZ-pinene.When 500 mg of catalyst were used, all samples were hydrogenated in 3 minutes or less. The composition of the hydrogenation medium (2.5 and 22.5 volume % acid and water, respectively, in isopropyl alcohol) was experimentally established as optimum for the most rapid generation of hydrogen. The total time required for generation of the gas was 4 to 5 minutes. Thus triplicate determinations can be completed in about 20 to 25 minutes following initial set-up. The number of successive determinations is apparently limited by the capacity of the burets since the 500-mg quantities of catalyst lasted a number of days. CONCLUSIONSThe accuracy, precision, sensitivity, and speed of this method for analytical hydrogenations are very satisfactory.

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“…Separation of rare earths from titanium or zirconium may be accomplished by ion exchange columns (3,8,18). However, because ion exchange columns are sometimes not immediately available, it seemed advisable to investigate other methods which would be applicable.…”

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confidence: 99%

“…Precipitation of rare earths as fluorides in the presence of zirconium is reported to be incomplete by Hettel and Fassel (8). If the zirconium concentration is high, separation of the rare earths as oxalates may lead to contamination of the rare earth precipitate by as much as several milligrams of zirconium (15).…”

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confidence: 99%