SU555078A1 - Method for producing 1,3-diene hydrocarbons - Google Patents
Method for producing 1,3-diene hydrocarbonsInfo
- Publication number
- SU555078A1 SU555078A1 SU1959008A SU1959008A SU555078A1 SU 555078 A1 SU555078 A1 SU 555078A1 SU 1959008 A SU1959008 A SU 1959008A SU 1959008 A SU1959008 A SU 1959008A SU 555078 A1 SU555078 A1 SU 555078A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- producing
- diene hydrocarbons
- diene
- exchange
- dioxane
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
(54) СПОСОБ ПОЛУЧЕНИЯ 1,3-ДИЕНОВЫХ УГЛЕВОДОРОДОВ(54) METHOD FOR PRODUCING 1,3-DIEN HYDROCARBONS
1one
Изобретение относитс к способам получени сопр женных диолефинов из диск санов - 1,3вприсухствии промышленнодоступных ионообменных смол.The invention relates to methods for producing conjugated diolefins from disk disks — 1.3 in a dry state of commercially available ion exchange resins.
Известны способы превращени 1,3 - диоксанов в сопр женные диолефины, отличающиес реагента-. ми, катализаторами, технологическим оформлением продесса 1, например способ термокаталигаческого расщеплени диоксанов, заключающийс в кратковременном контактировании при 350-400° С паров диоксана- 1,3 с гетерогенным катализатором. Однако способ имеет р д особенностей: необходимость регенерапии катализатора каждые 3-4 час, необходимость подачи в качестве разбавител больщого количества нагретых до 500-600° С паров воды (или 0,01 %-ного раствора фосфорной кислоты) и св занна с этим высока энергостойкость продесса, больщое количество кислых стоков.Methods are known for converting 1,3-dioxanes to conjugated diolefins, characterized by a reagent. mi, catalysts, technological design of process 1, for example, the method of thermocataligal cleavage of dioxanes, which consists in short-term contact at 350-400 ° C of dioxane-1,3 vapor with a heterogeneous catalyst. However, the method has a number of features: the need to regenerate the catalyst every 3-4 hours, the need to supply as a diluent a large amount of water vapor (or 0.01% phosphoric acid solution) heated to 500-600 ° C and is associated with this high energy resistance product, a large amount of acidic waste.
Известен также способ жидкофазного расщепле1ш 1,3 - диоксанов при 50-150° С в присутствии катионообменной смолы в кислой форме 2.Also known is the method of liquid-phase decomposition of 1,3-dioxanes at 50-150 ° C in the presence of a cation-exchange resin in acid form 2.
Однако выход изопрена сраврштельно низкий (40-50вес. %).However, the yield of isoprene is low (40-50 wt.%).
Целью изобретени вл етс повыщение выхода продукта.The aim of the invention is to increase the yield of the product.
Предлагаемый способ получени 1,3 - диеновых углеводородов заключаетс в том, что жидкофазное расщепление 4,4 -диметил - 1,3 - диоксана или 4, 4,5 - триметил - 1,3 - диоксана провод т в присутствии смеси катионообменной и аннонообменной смол в соотнощении 1:3 или смолы, обладающей одновременно кислотными и ocHOBHbiNm свойствами.The proposed method for producing 1,3-diene hydrocarbons is that the liquid phase cleavage of 4,4-dimethyl-1,3-dioxane or 4, 4,5-trimethyl-1,3-dioxane is carried out in the presence of a mixture of cation-exchange and annon-exchange resins in the ratio of 1: 3 or resin, having both acidic and ocHOBHbiNm properties.
Отличием способа вл етс использование в качестве ионообменной смолы смеси катионообменной и анионообменной смол в соотнощении 1:3 или смолы, обладающей одновременно кислотными и основными свойствами.The difference is in the use of a mixture of cation-exchange and anion-exchange resins in the ratio of 1: 3 or a resin that has both acidic and basic properties as the ion-exchange resin.
Расщепление диоксана - 1,3 в диен осуществл ют в жидкой фазе при 80-120° С и атмосферном или несколько повыщенном давле1ши (3-5 атм) в присутствии смеси катионной и анионообменной смол. В качестве разбавител используют воду, расход которой в 5-10 раз ниже, чем при термокаталитическом расщеплении. Увеличение выхода диена поDioxane-1.3 cleavage in the diene is carried out in the liquid phase at 80-120 ° C and atmospheric or somewhat higher pressure (3-5 atm) in the presence of a mixture of cationic and anion-exchange resins. Water is used as a diluent; its consumption is 5-10 times lower than with thermo-catalytic splitting. Increased diene yield by
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1959008A SU555078A1 (en) | 1973-08-13 | 1973-08-13 | Method for producing 1,3-diene hydrocarbons |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1959008A SU555078A1 (en) | 1973-08-13 | 1973-08-13 | Method for producing 1,3-diene hydrocarbons |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU555078A1 true SU555078A1 (en) | 1977-04-25 |
Family
ID=20564416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1959008A SU555078A1 (en) | 1973-08-13 | 1973-08-13 | Method for producing 1,3-diene hydrocarbons |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU555078A1 (en) |
-
1973
- 1973-08-13 SU SU1959008A patent/SU555078A1/en active
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