SU164262A1 - METHOD OF OBTAINING GLYOXAL - Google Patents
METHOD OF OBTAINING GLYOXALInfo
- Publication number
- SU164262A1 SU164262A1 SU854041A SU854041A SU164262A1 SU 164262 A1 SU164262 A1 SU 164262A1 SU 854041 A SU854041 A SU 854041A SU 854041 A SU854041 A SU 854041A SU 164262 A1 SU164262 A1 SU 164262A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- glyoxal
- ethylene glycol
- catalyst
- obtaining
- obtaining glyoxal
- Prior art date
Links
- LEQAOMBKQFMDFZ-UHFFFAOYSA-N Glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 title description 5
- 229940015043 Glyoxal Drugs 0.000 title description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 14
- 239000003054 catalyst Substances 0.000 description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 239000008187 granular material Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052904 quartz Inorganic materials 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
Description
Известен способ получени глиоксал окислением этиленгликол , по которому смесь этиленгликол с вод ным паром и воздухом пропускают над катализатором AgAUOs при 500- 700° С. Получают глиоксаль с выходом 610/0Предложенный способ отличаетс от известного тем, что смесь этиленгликол с вод ным паром и воздухом пропускают над катализатором из металлического серебра, обработанным минеральной кислотой и прокаленным при 600° С. Способ позвол ет получить более высокий выход целевого продукта - 70%.A method for producing glyoxal by oxidation of ethylene glycol is known, in which a mixture of ethylene glycol with water vapor and air is passed over an AgAUOs catalyst at 500-700 ° C. Glyoxal is obtained with a yield of 610/0 It is passed over a metallic silver catalyst treated with mineral acid and calcined at 600 ° C. The method yields a higher yield of the desired product — 70%.
Пример. 48 г гранул серебра (например, марки 999) размером 2-3 мм помещают в lOo/0-ную HNOo на 48 час., после отделени кислоты гранулы тщательно отмывают от ионов NOs и прокаливают при 600° С около 6 час. 8 мл полученного катализатора загружают в кварцевый адиабатический реактор иExample. 48 g of granules of silver (for example, mark 999) with a size of 2-3 mm are placed in lOo / 0 HNOo for 48 hours, after separation of the acid, the granules are thoroughly washed from NOs ions and calcined at 600 ° C for about 6 hours. 8 ml of the obtained catalyst is loaded into a quartz adiabatic reactor and
пропускают под ним этиленгликоль в смеси с вод ным паром и воздухом при весовом соотношении этиленглнколь : воздух 1 ; 2 при температуре около 650° С. Выход глиоксал , счита на пропущенный этилепгликоль, 70% при практически полной конверсии этиленгликол . Катализатор работает стабильно, и за 60 час работы активность его не снижаетс .ethylene glycol is mixed under it with water vapor and air at a weight ratio of ethylene glycol: air 1; 2 at a temperature of about 650 ° C. The output of glyoxal, calculated for the missed ethylene glycol, is 70% with almost complete conversion of ethylene glycol. The catalyst works stably, and for 60 hours of work its activity does not decrease.
10ten
Предмет изобретени Subject invention
Способ получени глиоксал окислением этиленгликол при повышенной температуре в присутствии серебр ного катализатора, отличающийс тем, что, с целью повыплени выхода продукта, примен ют катализатор из металлического серебра, обработанный минеральной кислотой и прокаленный при 600°С.The method for producing glyoxal by oxidation of ethylene glycol at elevated temperature in the presence of a silver catalyst, characterized in that, in order to increase the yield of the product, a catalyst of metallic silver, treated with mineral acid and calcined at 600 ° C, is used.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU164262A1 true SU164262A1 (en) |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0003343A1 (en) * | 1978-01-26 | 1979-08-08 | BASF Aktiengesellschaft | Process for the preparation of glyoxal |
| US4511739A (en) * | 1979-06-02 | 1985-04-16 | Basf Aktiengesellschaft | Continuous preparation of glyoxal |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0003343A1 (en) * | 1978-01-26 | 1979-08-08 | BASF Aktiengesellschaft | Process for the preparation of glyoxal |
| US4511739A (en) * | 1979-06-02 | 1985-04-16 | Basf Aktiengesellschaft | Continuous preparation of glyoxal |
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