CN108190837A - A kind of method that hydroiodic acid is produced using elemental iodine and hydrogen as raw material - Google Patents
A kind of method that hydroiodic acid is produced using elemental iodine and hydrogen as raw material Download PDFInfo
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- CN108190837A CN108190837A CN201711474002.4A CN201711474002A CN108190837A CN 108190837 A CN108190837 A CN 108190837A CN 201711474002 A CN201711474002 A CN 201711474002A CN 108190837 A CN108190837 A CN 108190837A
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- hydrogen
- hydroiodic acid
- elemental iodine
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B7/00—Halogens; Halogen acids
- C01B7/13—Iodine; Hydrogen iodide
- C01B7/135—Hydrogen iodide
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/584—Recycling of catalysts
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Abstract
A kind of method that hydroiodic acid is produced using elemental iodine and hydrogen as raw material.The present invention under mild reaction conditions, using elemental iodine as raw material, in aqueous solvent, makes elemental iodine be reduced to hydrogen iodide by excess hydrogen, hydrogen iodide is dissolved in water and obtains high concentration of hydrogen acid iodide under the catalytic action of loaded noble metal catalyst.Catalyst used in the present invention is cheap and easy to get；Reaction time is short, energy-efficient；Target product hydriodic acid concentration can reach more than 76%, and yield is more than 95wt%, and byproduct of reaction amount is seldom；Heterogeneous catalytic system, product and catalyst can be easily separated, and post processing is simple, is easy to industrialize；Catalyst is easy to reuse, and waste discharge is few, environmentally protective, has highly important application value.
Description
Technical field
The invention belongs to the field of chemical synthesis, are related to the production method of hydroiodic acid.
Background technology
Hydroiodic acid is the aqueous solution of hydrogen iodide, is a kind of strong acid with strong corrosive and strong reducing property.Hydroiodic acid is nothing
Color is to the liquid of light yellow irritant stink, in air strong smoke.Hydroiodic acid, which is shown in light or is long placed in, becomes brown, energy and water
With alcohol it is miscible, have reproducibility.It is mainly used for the synthesis of the fine chemicals such as methyl iodide, ammonium iodide, and organic reaction helps
Agent and production medicine and disinfectant etc..Hydrogen iodide and water can form azeotropic mixture, generate the hydroiodic acid of 55-58wt%.
《Chemical reagent chemicals handbook》The preparation method of the hydroiodic acid of middle record mainly has iodine and red phosphorus hydrolysis, sulphur
Change hydrogen reduction iodine, iodine is reacted with hydrogen, iodine is reacted with CO and iodine and hydrazine reaction method.
（1）Iodine and red phosphorus Hydrolyze method.Its reaction equation is：2P+3I2+6H2O=6HI+2H3PO3.Red phosphorus is in this reaction
Elemental iodine, is reduced to hydrogen iodide by reducing agent, itself is oxidized to phosphorous acid.It reacts acquired solution after filtering, is distilled,
Then Fractional Collections hydroiodic acid fraction.This method is in the lab using more；But this method is scarce there are some
Point, such as reaction is easily exploded dangerous, and low production efficiency, it is difficult to be industrialized.
（2）Vulcanize hydrogen reduction iodine method.Displacement occurs with iodine with hydrogen sulfide to react, H2S+I2=2HI+S ↓, this method
The shortcomings that be that the preparation speed of hydrogen sulfide gas is slow, technique line length, if moreover, hydrogen sulfide gas controls improper easy generation
Leakage, so as to which worker be made to be poisoned, is not easy large-scale production.
（3）Hydrogen and Iod R method.Directly synthesized through platinum black or platinized asbestos catalysis with hydrogen and iodine：H2+I2=2HI,
This reaction is reversible, and this method is reacted under conditions of 500 DEG C or more, severe reaction conditions, high to equipment requirement, equipment
Disposable input is big, moreover, the catalyst Pt needed for it is expensive so that the cost of entire synthesis technology is higher.
（4）Iodine and CO reaction methods.Reaction equation is CO+I2+H2O=2HI+CO2↑.Simple substance is added in autoclave
Iodine, rhodium carbonyl catalyst and aqueous solvent in CO atmosphere, react at 140 DEG C.The shortcomings that the method is to use carbon monoxide conduct
Reducing gas.
（5）Iodine and hydrazine reaction method.Using thick iodine as raw material, hydrazine hydrate is reducing agent, and hydrogen is prepared using dynamic ion-exchange method
Acid iodide.The method is complicated for operation, and cost is higher.
These prepare the method for hydroiodic acid all using water dissolution hydrogen iodide and then the post-processing approach of rectifying concentration.Due to iodine
Change hydrogen azeotrope with water, so the hydroiodic acid maximum concentration obtained by rectifying is about 57wt%.
Following Chinese patent also reports some methods for efficiently preparing hydroiodic acid.
Chinese patent CN102674253A discloses one kind using sodium iodide and pure water as raw material, in the presence of solid phosphorous acid
It is reacted, the method that target product hydroiodic acid is collected from organic phase.Phosphorous acid and pure water, temperature control 85 are first added in a reservoir
~95 DEG C, lower addition sodium iodide by several times is stirred, 3~4h of sustained response is filtered, and target product is obtained after rectifying.The invention obtains
The hydroiodic acid purity arrived is more than 99%, more than 90% yield.But the raw materials used sodium iodide of this method is expensive, in distillation process
It easily decomposed in the ortho phosphorous acid of addition, distillation process, have security risk.
Chinese patent CN103523753A discloses another method for preparing high-purity hydrogen acid iodide.The method utilizes iodine
The aqueous solution of simple substance be raw material, by reduction, desulfurization, defluorinate, concentrate and etc. after prepare high-purity hydrogen acid iodide.Its product purity
Up to more than 98%.The shortcomings that the method is to prepare hydroiodic acid with sodium sulfite reduction, can release sulfur dioxide and be unfavorable for environmental protection.
Chinese patent CN104085857B discloses a kind of new side that hydroiodic acid is prepared with ortho phosphorous acid sodium reduction elemental iodine
Method.Elemental iodine of the method in sodium hypophosphite reductive water, obtains hydroiodic acid；Then, with sulfide precipitation excess elemental iodine；
Then, refined filtration, rectifying obtain more than 99.7% purity of hydroiodic acid, and yield is more than 95%.But the method sodium hypophosphite
It is of high cost as reducing agent, it is difficult to recycle.
Invention content
The purpose of the present invention is to propose to a kind of methods that hydroiodic acid is produced using elemental iodine and hydrogen as raw material.
The present invention is achieved by the following technical solutions.
A kind of method that hydroiodic acid is produced using elemental iodine and hydrogen as raw material of the present invention, as follows：
Elemental iodine and noble metal catalyst are pressed into I2:Metallic catalyst（M）=10 ~ 6000 molar ratios are added to high temperature high pressure reverse
It answers in kettle, then by I2 :The mass ratio of water=0 ~ 4 adds in water, seals reaction kettle, and charged pressure is the hydrogen of 100 ~ 600 psi or contains
The gaseous mixture of hydrogen rises to 40 ~ 200 DEG C of temperature under stirring, be chilled to room temperature after reacting 1 ~ 25 h, collected under the conditions of ice-water bath anti-
Liquid and refined filtration are answered, hydroiodic acid is obtained, is washed with water and washs, 140oC is dried, and recycles catalyst.
To obtain high concentration（More than 76wt%）Hydroiodic acid, the present invention can be as follows：
Elemental iodine and noble metal catalyst are pressed into I2:Metallic catalyst（M）=10 ~ 6000 molar ratios are added to high temperature high pressure reverse
It answers in kettle, then by I2 :The mass ratio of hydroiodic acid=0 ~ 1.15 adds in hydroiodic acid（57wt%）, seal reaction kettle, charged pressure 100
The hydrogen of ~ 600 psi or the gaseous mixture of hydrogen rise to 40 ~ 200 DEG C of temperature under stirring, room temperature is chilled to after reacting 1 ~ 25 h,
Reaction solution and refined filtration are collected under the conditions of ice-water bath, the hydroiodic acid of a concentration of more than 76wt% can be obtained, be washed with water and wash, 140oUnder C
It is dry, recycle catalyst.
The metallic catalyst can be to be supported on activated carbon, zirconium dioxide, titanium dioxide, silica or molecular sieve etc.
The rhodium of different loads amount on carrier（Rh）, platinum（Pt）, palladium（Pd）, ruthenium（Ru）Or iridium（Ir）Wait noble metal catalysts.
The elemental iodine and the dosage of metal are preferably I2:M=100 ~ 600 (molar ratio).
The reaction temperature is preferably 90 ~ 110 DEG C.
The present invention provides a kind of methods that hydroiodic acid is produced using elemental iodine and hydrogen as raw material very efficiently, green.
This method reaction condition is mild, and activity is high, and catalyst recovery yield is high；Amount of by-products is seldom, and target product concentration can reach
76wt%, yield can reach 95%；Heterogeneous catalytic system, product and catalyst can be easily separated, and post processing is simple, is easy to industrialize；
Catalyst stability is good, is easy to reuse, and waste discharge is few, environmentally protective, has highly important application value.
Specific embodiment
Below by specific embodiment, the present invention will be described, but the present invention is not limited thereto.
Experimental method described in following embodiments is conventional method unless otherwise specified；The reagent and material, such as
Without specified otherwise, commercially obtain.
Embodiment 1.
3 g elemental iodines, 0.03 g Rh/C are sequentially added in 10 mL high-temperature high-pressure reaction kettles（5%）, 2mL water, sealing
Reaction kettle is filled with excess hydrogen（400 psi）, it stirs and quickly heats up to 100 DEG C, 10 h of holding.Reaction kettle ice-water bath is cold
But it to room temperature, collects and with filter membrane refined filtration reaction solution, obtains the hydroiodic acid of a concentration of 56.5wt%, yield 95.0%, elemental iodine
Content 0.07wt%, conversion ratio 99.9%.
Elemental iodine content, the detection of hydriodic acid concentration and hydrogen iodide yield and calculation basis following methods carry out.
The content of elemental iodine is titrated with sodium thiosulfate, and by the use of starch solution as indicator.Concentration of hydrogen iodide silver consuming amount
Method titrates.
The calculation of yield of hydrogen iodide：
The output mole of yield=HI of HI/（2×I2The mole of input）
Embodiment 2.
3 g elemental iodines, 2 mL, 57% hydroiodic acids, 0.03 g 5% are sequentially added in 10 mL high-temperature high-pressure reaction kettles
Rh/C seals reaction kettle, is filled with excess hydrogen（400 psi）, it stirs and quickly heats up to 100 DEG C, 20 h of holding.By reaction kettle
Ice-water bath is cooled to room temperature, and is collected and with filter membrane refined filtration reaction solution under low temperature, is obtained the hydroiodic acid of a concentration of 73.3wt%, yield
It is 95.0%, elemental iodine content 0.05wt%, conversion ratio 99.9%.
Embodiment 3.
4 g elemental iodines, 2 mL, 57% hydroiodic acids, 0.05 g Rh/C are sequentially added in 10 mL high-temperature high-pressure reaction kettles
（5%）, reaction kettle is sealed, is filled with excess hydrogen（400 psi）, it stirs and quickly heats up to 140 DEG C, 5 h of holding.By reaction kettle
Ice-water bath is cooled to room temperature, and is collected and with filter membrane refined filtration reaction solution under low temperature, is obtained the hydroiodic acid of a concentration of 76.3wt%, yield
It is 95.1%, elemental iodine content 0.03wt%, conversion ratio 99.9%.
Embodiment 4.
4 g elemental iodines, 2 mL, 57% hydroiodic acids, 0.03 g Pt/ are sequentially added in 10 mL high-temperature high-pressure reaction kettles
SiO2（5%）, reaction kettle is sealed, is filled with excess hydrogen（400 psi）, it stirs and quickly heats up to 100 DEG C, 20 h of holding.It will be anti-
Kettle ice-water bath is answered to be cooled to room temperature, is collected and with filter membrane refined filtration reaction solution under low temperature, obtains the hydroiodic acid of a concentration of 76.0wt%,
Yield is 94.5.0%, elemental iodine content 0.05wt%, conversion ratio 99.9%.
Embodiment 5.
4 g elemental iodines, 2 mL, 57% hydroiodic acids, 0.05 g Pd/C are sequentially added in 10 mL high-temperature high-pressure reaction kettles
（10%）, reaction kettle is sealed, is filled with excess hydrogen（400 psi）, it stirs and quickly heats up to 100 DEG C, 24 h of holding.It will reaction
Kettle ice-water bath is cooled to room temperature, under low temperature collect and use filter membrane refined filtration reaction solution, obtain the hydroiodic acid of a concentration of 76.4wt%, production
Rate is 95.3%, elemental iodine content 0.06wt%, conversion ratio 99.9%.
Embodiment 6.
4 g elemental iodines, 2 mL, 57% hydroiodic acids, 0.03 g Rh/C are sequentially added in 10 mL high-temperature high-pressure reaction kettles
（5%）, reaction kettle is sealed, is filled with excess hydrogen（100 psi）, it stirs and quickly heats up to 100 DEG C, 24 h of holding.By reaction kettle
Ice-water bath is cooled to room temperature, and is collected and with filter membrane refined filtration reaction solution under low temperature, is obtained the hydroiodic acid of a concentration of 76.5wt%, yield
It is 95.4%, elemental iodine content 0.06wt%, conversion ratio 99.9%.
Claims (4)
1. a kind of method that hydroiodic acid is produced using elemental iodine and hydrogen as raw material, it is characterized in that as follows：
Elemental iodine and noble metal catalyst are pressed into I2:The molar ratio of metallic catalyst=10 ~ 6000 is added to high-temperature high-pressure reaction kettle
In, then by I2 :The mass ratio of water=0 ~ 4 adds in water, seals reaction kettle, and charged pressure is the hydrogen or hydrogen of 100 ~ 600 psi
Gaseous mixture, rise to 40 ~ 200 DEG C of temperature under stirring, be chilled to room temperature after reacting 1 ~ 25 h, reaction solution is collected under the conditions of ice-water bath
And refined filtration, hydroiodic acid is obtained, is washed with water and washs, metallic catalyst is recycled in 140 DEG C of dryings；
The metallic catalyst is to be supported on activated carbon, zirconium dioxide, titanium dioxide, silica or molecular sieve carrier
Rhodium, platinum, palladium, ruthenium or the iraurite metal catalyst of different loads amount.
2. a kind of method that hydroiodic acid is produced using elemental iodine and hydrogen as raw material, it is characterized in that as follows：
Elemental iodine and noble metal catalyst are pressed into I2:The molar ratio of metallic catalyst=10 ~ 6000 is added to high-temperature high-pressure reaction kettle
In, then by I2 :The mass ratio of hydroiodic acid=0 ~ 1.15 adds in hydroiodic acid, seals reaction kettle, and charged pressure is 100 ~ 600 psi's
The gaseous mixture of hydrogen or hydrogen rises to 40 ~ 200 DEG C of temperature under stirring, room temperature, ice-water bath condition are chilled to after reacting 1 ~ 25 h
Lower collection reaction solution and refined filtration, obtain the hydroiodic acid of a concentration of more than 76wt%, are washed with water and wash, dry at 140 DEG C, recycling gold
Metal catalyst；
The metallic catalyst is to be supported on activated carbon, zirconium dioxide, titanium dioxide, silica or molecular sieve carrier
Rhodium, platinum, palladium, ruthenium or the iraurite metal catalyst of different loads amount.
3. a kind of method that hydroiodic acid is produced using elemental iodine and hydrogen as raw material according to claim 1 or 2, it is characterized in that
The elemental iodine and the dosage of metal are I2:M=100 ~ 600 (molar ratio).
4. a kind of method that hydroiodic acid is produced using elemental iodine and hydrogen as raw material according to claim 1 or 2, it is characterized in that
The reaction temperature is 90 ~ 110 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711474002.4A CN108190837A (en) | 2017-12-29 | 2017-12-29 | A kind of method that hydroiodic acid is produced using elemental iodine and hydrogen as raw material |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109824015A (en) * | 2019-01-10 | 2019-05-31 | 南昌大学 | A method of catalysis reduction elemental iodine prepares hydroiodic acid |
| CN110901083A (en) * | 2019-12-23 | 2020-03-24 | 苏州和福汽车饰件有限公司 | Rapid-cooling composite leather flame laminating machine and working method |
| WO2020247346A1 (en) * | 2019-06-03 | 2020-12-10 | Honeywell International Inc. | Hydrogen iodide (hi) production by reaction of hydrogen (h2)with iodine (i2) dissolved in a solvent |
| CN115571858A (en) * | 2022-10-19 | 2023-01-06 | 江苏东鼎化学科技有限公司 | Synthetic method of hydrogen iodide |
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|---|---|---|---|---|
| US3848065A (en) * | 1972-09-29 | 1974-11-12 | Monsanto Co | Method for producing hydrogen iodide |
| EP0064504A1 (en) * | 1980-11-21 | 1982-11-17 | Eastman Kodak Co | Preparation of substantially anhydrous iodine compounds. |
| CN101935021A (en) * | 2010-09-17 | 2011-01-05 | 自贡市金典化工有限公司 | Production method of hydrogen iodide |
| CN102674253A (en) * | 2012-05-22 | 2012-09-19 | 太仓沪试试剂有限公司 | Preparation method of hydroiodic acid |
| CN104085857A (en) * | 2014-06-26 | 2014-10-08 | 周海军 | New method for preparing high-purity hydroiodic acid |
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2017
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| US3848065A (en) * | 1972-09-29 | 1974-11-12 | Monsanto Co | Method for producing hydrogen iodide |
| EP0064504A1 (en) * | 1980-11-21 | 1982-11-17 | Eastman Kodak Co | Preparation of substantially anhydrous iodine compounds. |
| CN101935021A (en) * | 2010-09-17 | 2011-01-05 | 自贡市金典化工有限公司 | Production method of hydrogen iodide |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109824015A (en) * | 2019-01-10 | 2019-05-31 | 南昌大学 | A method of catalysis reduction elemental iodine prepares hydroiodic acid |
| CN109824015B (en) * | 2019-01-10 | 2022-03-22 | 南昌大学 | Method for preparing hydroiodic acid by catalytic reduction of iodine elementary substance |
| WO2020247346A1 (en) * | 2019-06-03 | 2020-12-10 | Honeywell International Inc. | Hydrogen iodide (hi) production by reaction of hydrogen (h2)with iodine (i2) dissolved in a solvent |
| CN114051486A (en) * | 2019-06-03 | 2022-02-15 | 霍尼韦尔国际公司 | By hydrogen (H)2) With iodine (I) dissolved in a solvent2) Production of Hydrogen Iodide (HI) by the reaction of (1) |
| EP3976530A4 (en) * | 2019-06-03 | 2023-07-12 | Honeywell International Inc. | Hydrogen iodide (hi) production by reaction of hydrogen (h2)with iodine (i2) dissolved in a solvent |
| CN110901083A (en) * | 2019-12-23 | 2020-03-24 | 苏州和福汽车饰件有限公司 | Rapid-cooling composite leather flame laminating machine and working method |
| CN110901083B (en) * | 2019-12-23 | 2024-05-07 | 苏州和福汽车饰件有限公司 | Rapid cooling composite leather flame compounding machine and working method |
| CN115571858A (en) * | 2022-10-19 | 2023-01-06 | 江苏东鼎化学科技有限公司 | Synthetic method of hydrogen iodide |
| CN115571858B (en) * | 2022-10-19 | 2024-02-13 | 江苏东鼎化学科技有限公司 | Method for synthesizing hydrogen iodide |
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Application publication date: 20180622 |