It prepared by heating a mixture of lanthanum(III) oxide and ammonium chloride at 200-250 °C: see the following reference. Handbook of Preparative Inorganic Chemistry, 2nd Ed. Edited by G. Brauer, Academic Press, 1963, NY.
It prepared by heating a mixture of lanthanum(III) oxide and ammonium chloride at 200-250 °C: see the following reference. Handbook of Preparative Inorganic Chemistry, 2nd Ed. Edited by G. Brauer, Academic Press, 1963, NY.
I think it will be more logical if you prepare the solution without any drying process. Because in either cases (drying or not) you need to titrate the solution. Lanthanum solution can be easily titrated with standard EDTA at pH=5 (acetate/acetic acid buffer) and xylenol orange as indicator. One method to prepare dry lanthanum chloride require the reaction of the oxide with ammonium chloride under hugh vacuum at high temperature (> 400 - 500 °C)
I think it will be more logical if you prepare the solution without any drying process. Because in either cases (drying or not) you need to titrate the solution. Lanthanum solution can be easily titrated with standard EDTA at pH=5 (acetate/acetic acid buffer) and xylenol orange as indicator. One method to prepare dry lanthanum chloride require the reaction of the oxide with ammonium chloride under hugh vacuum at high temperature (> 400 - 500 °C)
Dear Ana,
The preparation of anhydrous Lanthanum chloride comprising non vacuum drying of Lanthanum chloride heptahydrate which comprises heating of Lanthanum chloride heptahydrate in hydrogen chloride atmosphere at 200-3000C. Prior art the preparation of anhydrous Cerium chloride comprising vacuum drying of Cerium chloride heptahydrate for 2 hrs at 60°C followed by for 2 hrs at 80°C and continuing for 12 hrs at 140°C results in the formation of lump, therefore, inefficient at industrial scale.
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Dear Ana,
The preparation of anhydrous Lanthanum chloride comprising non vacuum drying of Lanthanum chloride heptahydrate which comprises heating of Lanthanum chloride heptahydrate in hydrogen chloride atmosphere at 200-3000C. Prior art the preparation of anhydrous Cerium chloride comprising vacuum drying of Cerium chloride heptahydrate for 2 hrs at 60°C followed by for 2 hrs at 80°C and continuing for 12 hrs at 140°C results in the formation of lump, therefore, inefficient at industrial scale.
https://www.google.com.eg/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0ahUKEwju7_bfofHOAhVVOMAKHWDkDW0QFggfMAA&url=http%3A%2F%2Fwww.google.com%2Fpatents%2FWO2010032256A1%3Fcl%3Den&usg=AFQjCNEnt2o94YGQ92HLVd9Or5_suboG2w&sig2=fMIhrpHDXKNcJmKsWWjWwQ
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Cf.: K. Wetzel, Sect. 21, in: G. Brauer (Ed.), "Handbook of Preparative Inorganic Chemistry", Vol. 2, 2nd ed., Academic Press, 1965, pp. 1146-1148.
Cf.: K. Wetzel, Sect. 21, in: G. Brauer (Ed.), "Handbook of Preparative Inorganic Chemistry", Vol. 2, 2nd ed., Academic Press, 1965, pp. 1146-1148.
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Find in attach, a AUXILIARY INFORMATION on Lanthanum Chloride
Find in attach, a AUXILIARY INFORMATION on Lanthanum Chloride
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It prepared by heating a mixture of lanthanum(III) oxide and ammonium chloride at 200-250 °C: see the following reference.
Handbook of Preparative Inorganic Chemistry, 2nd Ed. Edited by G. Brauer, Academic Press, 1963, NY.
It prepared by heating a mixture of lanthanum(III) oxide and ammonium chloride at 200-250 °C: see the following reference.
Handbook of Preparative Inorganic Chemistry, 2nd Ed. Edited by G. Brauer, Academic Press, 1963, NY.
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May I know Dr Ana, which procedure you followed to obtain anhydrous Lanthanum chloride from hydrated one?
@ Ana Monjaras
May I know Dr Ana, which procedure you followed to obtain anhydrous Lanthanum chloride from hydrated one?
@ Ana Monjaras
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I think it will be more logical if you prepare the solution without any drying process.
Because in either cases (drying or not) you need to titrate the solution.
Lanthanum solution can be easily titrated with standard EDTA at pH=5 (acetate/acetic acid buffer) and xylenol orange as indicator.
One method to prepare dry lanthanum chloride require the reaction of the oxide with ammonium chloride under hugh vacuum at high temperature (> 400 - 500 °C)
I think it will be more logical if you prepare the solution without any drying process.
Because in either cases (drying or not) you need to titrate the solution.
Lanthanum solution can be easily titrated with standard EDTA at pH=5 (acetate/acetic acid buffer) and xylenol orange as indicator.
One method to prepare dry lanthanum chloride require the reaction of the oxide with ammonium chloride under hugh vacuum at high temperature (> 400 - 500 °C)
More
VOTE