CN101987748A - Preparation method of analytically pure chloroplatinic acid - Google Patents
Preparation method of analytically pure chloroplatinic acid Download PDFInfo
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- CN101987748A CN101987748A CN2009103051659A CN200910305165A CN101987748A CN 101987748 A CN101987748 A CN 101987748A CN 2009103051659 A CN2009103051659 A CN 2009103051659A CN 200910305165 A CN200910305165 A CN 200910305165A CN 101987748 A CN101987748 A CN 101987748A
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Abstract
The invention belongs to a preparation method of analytically pure chloroplatinic acid. The preparation method comprises the following steps of: (1) decomposing metal platinum, namely putting the metal platinum into a glass beaker, adding mixed liquor of hydrochloric acid and nitric acid and heating until the metal platinum is fully decomposed so as to obtain solution A; (2) removing nitrogen dioxide, namely adding the hydrochloric acid into the solution A and heating until the nitrogen dioxide is removed so as to obtain solution B; and (3) synthesizing the analytically pure chloroplatinic acid, namely filtering the solution B, heating for concentrating, adding the hydrochloric acid and hydrogen peroxide and concentrating continually to form small-size particles so as to obtain finished analytically pure chloroplatinic acid. The preparation method of the analytically pure chloroplatinic acid has simple process steps and high production efficiency; and the analytically pure chloroplatinic acid has high purity and low impurity content.
Description
Technical field
The invention belongs to the mineral compound field, especially a kind of preparation method of analytical pure Platinic chloride.
Background technology
The analytical pure Platinic chloride has obtained using widely as alkaloidal precipitation agent and catalyzer, and the preparation method of Platinic chloride is for being raw material with the metal platinum, in the mixed solution of hydrochloric acid and the certain proportioning of nitric acid at present, thermal degradation after treating to decompose fully, is filtered, till evaporated filtrate to crystallization is separated out, when evaporation reaches terminal point, must feed chlorine and make solution saturated, be accompanied by and stir cooling down, obtain Platinic chloride, the Platinic chloride purity that this kind method obtains is low, foreign matter content height, processing step complexity.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, the preparation method of a kind of purity height, foreign matter content is low, processing step is simple, production efficiency is higher analytical pure Platinic chloride is provided.
The present invention is achieved through the following technical solutions:
A kind of preparation method of analytical pure Platinic chloride the steps include:
(1), the decomposition of metal platinum: metal platinum is put into glass beaker, and adding concentration and be 30% hydrochloric acid and concentration is the mixed solution of 96% nitric acid, is heated to 170-190 ℃, treats that metal platinum decomposes fully, obtains solution A;
(2), remove nitrogen peroxide: lasting adding concentration is 30% hydrochloric acid in solution A, is heated to 150 ℃, to there not being yellow gas, obtains solution B;
(3), the analytical pure Platinic chloride is synthetic: after the solution B filtration, heating concentrates, and temperature is controlled at 75-80 ℃, adds hydrochloric acid and hydrogen peroxide again, continues to be concentrated into the small volume particle, is analytical pure Platinic chloride finished product.
And, in described step (1) mixed solution hydrochloric acid and nitric acid volume ratio 3: 1.
And the volume ratio of hydrochloric acid and hydrogen peroxide is 2: 1 in the described step (3).
Advantage of the present invention and beneficial effect are:
1, the preparation method of the pure Platinic chloride of this analysis adopts hydrochloric acid and nitric acid mixed solution decomposing metal platinum, through removing nitrogen peroxide, concentrate and making with hydrochloric acid, hydrogen peroxide oxidation, this kind method can access the high Platinic chloride of purity, and the preparation method is simple, cost is lower, and is easy to control.
2, the preparation method of purity height of the present invention, foreign matter content is low, processing step is simple, production efficiency is higher analytical pure Platinic chloride.
Embodiment
The present invention is described in further detail by following examples.Need to prove: following embodiment is illustrative, is not determinate, can not limit protection scope of the present invention with following embodiment.
Embodiment 1
A kind of preparation method of analytical pure Platinic chloride the steps include:
(1), the decomposition of metal platinum: the 15g metal platinum is put into glass beaker, add concentration and be 30% hydrochloric acid 300ml and the mixed solution 100ml that concentration is 96% nitric acid, be heated to 170 ℃, treat that metal platinum decomposes fully, stop to add hydrochloric acid, stop to heat.Remove nitrogen peroxide, obtained solution A;
(2), remove nitrogen peroxide: lasting adding concentration is 30% hydrochloric acid 500ml in solution A, is heated to 140 ℃, to there not being yellow gas, obtains solution B;
(3), the analytical pure Platinic chloride is synthetic: after the filtration of 1000ml solution B, heating concentrates 180ml, and temperature is controlled at 80 ℃, adds 8ml hydrochloric acid and 4ml hydrogen peroxide again, continues to be concentrated into the small volume particle, is analytical pure Platinic chloride finished product.
And, in described step (1) mixed solution hydrochloric acid and nitric acid volume ratio 3: 1.
And the volume ratio of hydrochloric acid and hydrogen peroxide is 2: 1 in the described step (3).
Embodiment 2
A kind of preparation method of analytical pure Platinic chloride, the step of its preparation method is:
(1), the decomposition of metal platinum: the 10g metal platinum is put into glass beaker, add the mixed solution of hydrochloric acid 300ml and nitric acid 100ml, be heated to 190 ℃, treat that metal platinum decomposes fully, obtain solution A;
(2), remove nitrogen peroxide: in solution A, add 400ml hydrochloric acid, be heated to 155 ℃, to there not being yellow gas, stop to add hydrochloric acid, stop heating.Remove nitrogen peroxide, obtained solution B;
(3), the analytical pure Platinic chloride is synthetic: after the filtration of 800ml solution B, heating is concentrated into 160ml, and temperature is controlled at 75 ℃, adds 6ml hydrochloric acid and 3ml hydrogen peroxide again, continues to be concentrated into the small volume particle, is analytical pure Platinic chloride finished product.
Claims (3)
1. the preparation method of an analytical pure Platinic chloride, it is characterized in that: this preparation method's step is:
(1), the decomposition of metal platinum: metal platinum is put into glass beaker, and adding concentration and be 30% hydrochloric acid and concentration is the mixed solution of 96% nitric acid, is heated to 170-190 ℃, treats that metal platinum decomposes fully, obtains solution A;
(2), remove nitrogen peroxide: lasting adding concentration is 30% hydrochloric acid in solution A, is heated to 140-155 ℃, to there not being yellow gas, obtains solution B;
(3), the analytical pure Platinic chloride is synthetic: after the solution B filtration, heating concentrates, and temperature is controlled at 75-80 ℃, adds hydrochloric acid and hydrogen peroxide again, continues to be concentrated into the small volume particle, is analytical pure Platinic chloride finished product.
2. the preparation method of analytical pure Platinic chloride according to claim 1 is characterized in that: in described step (1) mixed solution hydrochloric acid and nitric acid volume ratio 3: 1.
3. the preparation method of analytical pure Platinic chloride according to claim 1 is characterized in that: the volume ratio of hydrochloric acid and hydrogen peroxide is 2: 1 in the described step (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103051659A CN101987748A (en) | 2009-08-04 | 2009-08-04 | Preparation method of analytically pure chloroplatinic acid |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009103051659A CN101987748A (en) | 2009-08-04 | 2009-08-04 | Preparation method of analytically pure chloroplatinic acid |
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| CN101987748A true CN101987748A (en) | 2011-03-23 |
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| CN2009103051659A Pending CN101987748A (en) | 2009-08-04 | 2009-08-04 | Preparation method of analytically pure chloroplatinic acid |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102285693A (en) * | 2011-06-13 | 2011-12-21 | 陕西瑞科新材料股份有限公司 | Preparation method of dinitroso diammineplatinum |
| CN103288147A (en) * | 2012-02-27 | 2013-09-11 | 陕西煤业化工技术开发中心有限责任公司 | Preparation method of ammonium chloroplatinate |
| CN106745344B (en) * | 2016-12-01 | 2018-06-19 | 沈阳有色金属研究院 | A kind of method that carbon is efficiently removed in platinum acid chloride solution |
| CN112429785A (en) * | 2020-12-07 | 2021-03-02 | 辽宁石油化工大学 | Preparation method of analytically pure platinum tetrachloride |
-
2009
- 2009-08-04 CN CN2009103051659A patent/CN101987748A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102285693A (en) * | 2011-06-13 | 2011-12-21 | 陕西瑞科新材料股份有限公司 | Preparation method of dinitroso diammineplatinum |
| CN103288147A (en) * | 2012-02-27 | 2013-09-11 | 陕西煤业化工技术开发中心有限责任公司 | Preparation method of ammonium chloroplatinate |
| CN103288147B (en) * | 2012-02-27 | 2015-03-04 | 陕西煤业化工技术开发中心有限责任公司 | Preparation method of ammonium chloroplatinate |
| CN106745344B (en) * | 2016-12-01 | 2018-06-19 | 沈阳有色金属研究院 | A kind of method that carbon is efficiently removed in platinum acid chloride solution |
| CN112429785A (en) * | 2020-12-07 | 2021-03-02 | 辽宁石油化工大学 | Preparation method of analytically pure platinum tetrachloride |
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Application publication date: 20110323 |