Silver Acetate as an Amphoteric Base.

Peterson, S.; Dienes, Edward K.

doi:10.1021/j150491a003

Cited by 5 publications

(2 citation statements)

References 3 publications

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“…The common ingredients for obtaining a glassy, amorphous precursor are barium acetate, a rare earth acetate, and acetic acid. 23 The system of acetates dissolved in acetic acid is analogous to the system of hydroxides dissolved in water. Eliminating the barium or rare earth acetate, or substituting water for acetic acid, results in a crystalline precursor.…”

Section: Discussionmentioning

confidence: 99%

Simplified preparation of REBa₂Cu₃O_7−x via the acetate method

1995

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High-quality bulk REBa 2 Cu 3 O 7 * (RE = Y, Eu, Gd, Nd, La) was synthesized by a solution method. Stoichiometric amounts of yttrium, barium, and copper acetates were dissolved in glacial acetic acid. The acid was boiled away leaving a glassy acetate precursor. This precursor has shown amorphous scattering in XRD, a phenomenon consistent with atomic level mixing of reactants. The glassy precursor was subsequently heat-treated with a 5 °C/min ramp to 900 °C and a 2 h soak at 900 °C in air. The final product was obtained after heat treatment under oxygen at 550 °C with slow cooling to room temperature. Final products were analyzed by XRD, SEM, and four probe dc-resistivity measurements. The mechanism of both precursor and product formation was examined through substitution studies and XRD. It was found that a combination of a rare earth acetate, barium acetate, and acetic acid was necessary for the formation of an amorphous precursor.

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Section: Discussionmentioning

confidence: 99%

Simplified preparation of REBa₂Cu₃O_7−x via the acetate method

1995

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“…76 The authors ascribe increase in solubility of silver acetate to the equilibrium Ag(OAc) 2 " ^±AgOAc + OAc- (21) and calculate approximate equilibrium constant for the above reaction to be 0.04. Solubility of silver acetate is enhanced to a slight extent by the presence of potassium acetate.…”

Section: Metathetical Reactions Of Ion Pairs In H O Ac Of the Type (Gmentioning

confidence: 99%

Anhydrous Acetic Acid as Nonaqueous Solvent

Popov

1970

The Chemistry of Nonaqueous Solvents

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Beitrag zur kolorimetrischen Bestimmung von Sulfidionen

1952

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Zur quantitativen Schnellbestimmung chemischer Stoffe eignen sich bekanntlich besonders spektralkolorimetrische Methoden, die bei Verwendung geeigneter Apparate je n~ch dem Grad der Automatisierung in kurzer Zeit recht genaue Werte ergeben. Je hShere Anforderungen an die Gen~uigkeit oder an die untere Erf~Bbarkeitsgrenze gestellt werden, um so rigoroser werden allerdings aueh die Forderungen, die an das Spektralkolorimeter bzw. -photometer selbst zu stellen sind. Zwecks Erzielung einer groBen Genauigkeit ist besonders auf die Konst~nz der Betriebsspannungen und auf eine geeignete Dehnung des Anzeigebereiehes Wert zu legen, zwei Faktoren, denen wie vor kurzem gezeigt werden konnte --auch mit rel~tiv einfachen l~I~Bnahmen schon weitestgehend Rechnung getragen werden kannl, ~.In vorliegender Arbeit sollen im wesentliehen die bisherigen kolorimetrischen ~ethoden hinsichtlich der M6glichkeit einer Mikrobestimmung yon Sulfidionen (Schwefelwasserstoff und Alkalisulfide) n~her iiberpriift werden, besonders in Hinblick auf die Verwendung in halboder vollautomatisch registrierenden Gasanalysatoren.Um den optimalen Spektralbereich fiir die obj ektive Kolorimetrierung kennen zu ]ernen, wurde besonderer Wert auf die Ermittlung der Absorptionskurven gelegt.Die in der Literatur bekanntgegebenen Methoden mSchten wit in zwei Kategorien teilen, und zwar in die der eigentlichen Farbreaktionen und in jene der Bildung kolloidaler, gef~rbter Metallsulfide; ferner wollen wit differenzieren zwischen ,,farblosen" und ,,farbigen" Reagenzien.

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Silver Acetate as an Amphoteric Base.

Cited by 5 publications

References 3 publications

Simplified preparation of REBa₂Cu₃O_7−x via the acetate method

Simplified preparation of REBa₂Cu₃O_7−x via the acetate method

Anhydrous Acetic Acid as Nonaqueous Solvent

Beitrag zur kolorimetrischen Bestimmung von Sulfidionen

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Silver Acetate as an Amphoteric Base.

Cited by 5 publications

References 3 publications

Simplified preparation of REBa2Cu3O7−x via the acetate method

Simplified preparation of REBa2Cu3O7−x via the acetate method

Anhydrous Acetic Acid as Nonaqueous Solvent

Beitrag zur kolorimetrischen Bestimmung von Sulfidionen

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Simplified preparation of REBa₂Cu₃O_7−x via the acetate method

Simplified preparation of REBa₂Cu₃O_7−x via the acetate method