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1
Content available remote Wykorzystanie metody utleniającego strącania do otrzymywania ferrytów FeFe2O4 i NiFe2O4 z odpadowego siarczanu żelaza(II)
Przepiera A., Konratowska A., Przepiera K., Jabłoński M., Płaska J.
Przemysł Chemiczny
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2009
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T. 88, nr 1
77-82
2
Content available remote Adsorpcja jonów niklu(II) z roztworów wodnych przez wodorofosforan tytanu(IV)
Przepiera A., Płaska J., Przepiera K., Jabłoński M., Konratowska A.
Przemysł Chemiczny
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2009
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T. 88, nr 2
176-180
3
Content available Preparation of cobalt titanates via co-precipitation while using industrial intermediates as titanium precursors
Przepiera A., Płaska J., Przepiera K., Jabłoński M., Konratowska A.
Polish Journal of Chemical Technology
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2009
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Vol. 11, nr 2
51-54
EN
This paper reports on the results of cobalt titanates preparation by calcination of green bodies obtained by a co-precipitation method. For the investigations were used: as titanium sources, acidic solutions of titanyl sulfate and hydrous titanium dioxide, originating from the production process of titanium dioxide by sulfate method. The composition of the obtained materials was determined using titration methods. The calcined powders were characterized by X-ray diffraction method. It has been found that the obtained products are composed of cobalt methatitanate CoTiO3 or cobalt orthotitanate Co2TiO4 occurring as single phases, and also as cobalt titanates and titanium dioxide phase mixtures. The proposed method of proceeding can be used for the preparation of series of transition metals titanates, such as nickel, iron, zinc, copper and also aluminium titanates.
4
The structural substitution of aluminium ions during oxidative precipitation of goethite
Przepiera A., Przepiera K., Konratowska A., Płaska J.
Polish Journal of Applied Chemistry
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2008
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nr 3-4/07,1-2/08
77-89
EN
This work shows the method of oxidative precipitation goethite doped with Al3+ ions. As the substratum has been used copperas the waste from titanium dioxide production. The suitable conditions, reaction kinetics and degree of aluminium substitution have been investigated.The aluminium substituted goethite can be used as precursor for the red pigment preparation.
5
Preparation of titanium(IV) phosphates
Przepiera A., Przepiera K., Płaska J., Konratowska A.
Polish Journal of Applied Chemistry
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2008
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nr 3-4/07,1-2/08
91-100
EN
This paper shows the results of investigation of titanium(IV) phosphates precipitation from acidic solution of titanyl sulfate. In investigation was used the titanyl sulfate solution obtained as the product of decomposition of ilmenite by sulfuric acid during production of titanium dioxide white pigments. The titanium(IV) phosphates were precipitated by the action of orthophosphoric acid, at different acid concentration. It has been found that precipitation of titanium phosphates occurs at phosphoric acid concentration range from 5 to 80 wt%. The prepared materials were analysed using chemical, thermogravimetric and X-ray diffractometric methods. It has been established that freshly precipitated titanium phosphates are practically amorphous. During their thermal treatment are formed crystalline products which, in dependence on used phosphoric acid concentration, are composed of titanium pyrophosphate, TiP2O7 or mixture of titanium pyrophosphate and titanium oxide biphosphate, Ti2O(PO4)2
6
Content available remote A propos rozsądku
Płaska J., Ziuta J.
Geodeta : magazyn geoinformacyjny
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2001
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nr 5
22-24
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