MD202G2 - Procedeu de obţinere a gama-MnO2 - activ - Google Patents

Procedeu de obţinere a gama-MnO2 - activ

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Publication number
MD202G2
MD202G2 MD93-0035A MD930035A MD202G2 MD 202 G2 MD202 G2 MD 202G2 MD 930035 A MD930035 A MD 930035A MD 202 G2 MD202 G2 MD 202G2
Authority
MD
Moldova
Prior art keywords
mno2
active
preparation
alcaline
acid
Prior art date
Application number
MD93-0035A
Other languages
English (en)
Russian (ru)
Other versions
MD930035A (ro
MD202F2 (ro
Inventor
Аурелиан ГУЛЯ
Валериу РУДИК
Иоан Габриель САНДУ
Original Assignee
Государственный Университет Молд0
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Государственный Университет Молд0 filed Critical Государственный Университет Молд0
Priority to MD93-0035A priority Critical patent/MD202G2/ro
Publication of MD930035A publication Critical patent/MD930035A/ro
Publication of MD202F2 publication Critical patent/MD202F2/ro
Publication of MD202G2 publication Critical patent/MD202G2/ro

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  • Inorganic Compounds Of Heavy Metals (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

Invenţia se referă la industria chimică, în special, la un procedeu de obţinere a g -MnO2- activ, şi poate fi utilizată ca masă electrochimic-activă pentru elemente şi baterii galvanice uscate cu electroliţi acizi sau alcalini.Se propune procedeul de obţinere a g -MnO2- activ ce include procesul termic de oxidare a ionilor Mn (II) sub formă de carbonat prin oxidanţi neorganici, unde în calitate de ingredient iniţial se foloseşte MnCO3 cu densitatea 4,2 g/cm3, care se oxidează la t0-=300-3500C la o presiune constantă de 1,5-2 atm., timp de 20-60 min., după care urmează o hidroliză acidă în soluţie de 2N H2SO4 într-un raport de masă precipitat:acid de 1:2 şi spălarea ulterioară cu apă deionizată până la pH de 4,5-5,0. În calitate de oxidant se foloseşte soluţie apoasă de H2O2 de 10-20%, slab acidulată cu H2SO4 de 0,4-0,6% în prezenţa oxigenului din aer.Efectul tehnic al invenţiei constă în faptul că compusul obţinut astfel - forma activă a g-MnO2, are:-o puritate mare >98, 5%;-un pH scăzut al probei-4,5-5,0;- o densitate mare - 4,2 g/cm3.În afară de aceasta, invenţia mai are o serie de avantaje:- elimină sursele de impurificare cu ioni ai metalelor alcaline şi cu anioni de clor;- reduce numărul de etape din procesul de obţinere a g -MnO2 cu 3;- reduce consumul de energie electrică şi termică cu 40%.
MD93-0035A 1993-05-05 1993-05-05 Procedeu de obţinere a gama-MnO2 - activ MD202G2 (ro)

Priority Applications (1)

Application Number Priority Date Filing Date Title
MD93-0035A MD202G2 (ro) 1993-05-05 1993-05-05 Procedeu de obţinere a gama-MnO2 - activ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
MD93-0035A MD202G2 (ro) 1993-05-05 1993-05-05 Procedeu de obţinere a gama-MnO2 - activ

Publications (3)

Publication Number Publication Date
MD930035A MD930035A (ro) 1994-11-30
MD202F2 MD202F2 (ro) 1995-05-31
MD202G2 true MD202G2 (ro) 1996-01-31

Family

ID=19738491

Family Applications (1)

Application Number Title Priority Date Filing Date
MD93-0035A MD202G2 (ro) 1993-05-05 1993-05-05 Procedeu de obţinere a gama-MnO2 - activ

Country Status (1)

Country Link
MD (1) MD202G2 (ro)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MD1094Z (ro) * 2016-03-31 2017-06-30 ОП ГОСУДАРСТВЕННЫЙ МЕДИЦИНСКИЙ И ФАРМАЦЕВТИЧЕСКИЙ УНИВЕРСИТЕТ им. НИКОЛАЯ ТЕСТЕМИЦАНУ РЕСПУБЛИКИ МОЛДОВА Metodă de diagnostic al bolii de reflux gastroesofagian
MD1152Z (ro) * 2016-11-15 2018-01-31 Государственный Медицинский И Фармацевтический Университет "Nicolae Testemitanu" Республики Молдова Metodă de stabilire a gradului de severitate a bolii de reflux gastroesofagian

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2701104A (en) * 1952-01-25 1955-02-01 Reginald S Dean Method of preparing manganese dioxide for the depolarization of dry cells
US2956860A (en) * 1957-04-11 1960-10-18 Manganese Chemicals Corp Process for producing manganese dioxide
US3535217A (en) * 1966-12-21 1970-10-20 Matsushita Electric Ind Co Ltd Process for electrolytic deposition of manganese dioxide

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2701104A (en) * 1952-01-25 1955-02-01 Reginald S Dean Method of preparing manganese dioxide for the depolarization of dry cells
US2956860A (en) * 1957-04-11 1960-10-18 Manganese Chemicals Corp Process for producing manganese dioxide
US3535217A (en) * 1966-12-21 1970-10-20 Matsushita Electric Ind Co Ltd Process for electrolytic deposition of manganese dioxide

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MD1094Z (ro) * 2016-03-31 2017-06-30 ОП ГОСУДАРСТВЕННЫЙ МЕДИЦИНСКИЙ И ФАРМАЦЕВТИЧЕСКИЙ УНИВЕРСИТЕТ им. НИКОЛАЯ ТЕСТЕМИЦАНУ РЕСПУБЛИКИ МОЛДОВА Metodă de diagnostic al bolii de reflux gastroesofagian
MD1152Z (ro) * 2016-11-15 2018-01-31 Государственный Медицинский И Фармацевтический Университет "Nicolae Testemitanu" Республики Молдова Metodă de stabilire a gradului de severitate a bolii de reflux gastroesofagian

Also Published As

Publication number Publication date
MD930035A (ro) 1994-11-30
MD202F2 (ro) 1995-05-31

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