SU181079A1 - METHOD OF OBTAINING 1,3-DIOXANES - Google Patents
METHOD OF OBTAINING 1,3-DIOXANESInfo
- Publication number
- SU181079A1 SU181079A1 SU364679A SU364679A SU181079A1 SU 181079 A1 SU181079 A1 SU 181079A1 SU 364679 A SU364679 A SU 364679A SU 364679 A SU364679 A SU 364679A SU 181079 A1 SU181079 A1 SU 181079A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- dioxanes
- obtaining
- catalysts
- aldehydes
- olefins
- Prior art date
Links
- 150000000093 1,3-dioxanes Chemical class 0.000 title 1
- 239000003054 catalyst Substances 0.000 description 5
- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 150000001299 aldehydes Chemical class 0.000 description 3
- 150000001336 alkenes Chemical class 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000005909 Kieselgur Substances 0.000 description 2
- 230000002378 acidificating Effects 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- JIAARYAFYJHUJI-UHFFFAOYSA-L Zinc chloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- VQTUBCCKSQIDNK-UHFFFAOYSA-N isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000008262 pumice Substances 0.000 description 1
- 239000011949 solid catalyst Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- IAQRGUVFOMOMEM-ONEGZZNKSA-N trans-but-2-ene Chemical group C\C=C\C IAQRGUVFOMOMEM-ONEGZZNKSA-N 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
Description
Известно получение производных дноксана конденсацией олефинов с альдегидами в л идкой фазе в присутствии минеральных кислот в качестве катализаторов.It is known to obtain derivatives of dnoxane by the condensation of olefins with aldehydes in the liquid phase in the presence of mineral acids as catalysts.
С иелью упрощени процесса в ироизводствениых услови х предложен способ, заключающийс в том, что олефины подвергают конденсации с альдегидами в газовой фазе под давлением до 100 аглг при телшературе 150- . Процесс провод т в присутствии твердых катализаторов, например фосфорной кислоты на кизельгуре.In order to simplify the process under production conditions, a method has been proposed, namely, that olefins are subjected to condensation with aldehydes in the gas phase under a pressure of up to 100 aglg at a television temperature of 150-. The process is carried out in the presence of solid catalysts, for example phosphoric acid on diatomaceous earth.
Пример. Через реактор, наполненный катализатором - фосфорной кислотой на кизельгуре или пемзой, пропитанной раствором хлористого цинка, пропускают смесь наров пропилена и формалииа в различиых соотиошеин х прн времени контакта в 3-10 мин и температуре 175-250° С. Реакцию ведут под давлением 20-50 от.ад. Процент вступившего в реакцию формальдегида, счита иа метиллиоксаи , составл ет 25-75%, в зависимости от условий реакции. Не прореагировавшие формальдегид и пропилен после охлаждени продуктов реакции могут быть снова возвра1цены в процесс.Example. Through a reactor filled with phosphoric acid catalyst on diatomaceous earth or pumice, impregnated with a solution of zinc chloride, a mixture of propylene and formalium mixture is passed through various contact times of 3–10 minutes at a temperature of 175–250 ° C. 50 o.ad. The percentage of formaldehyde reacted, which is methylmelioxy, is 25-75%, depending on the reaction conditions. Unreacted formaldehyde and propylene after cooling the reaction products can be returned to the process.
Аналогичные результаты получают при пропускании паров формалина и изобутилена или псевдобутилена под давлением через эти же катализаторы. При этом выход т соответствующие производиые диоксапа-1,3.Similar results are obtained by passing formalin vapor and isobutylene or pseudobutylene under pressure through the same catalysts. At the same time, the corresponding manufactured dioxapa-1,3 is obtained.
Предмет и з о б р е т е и и Subject and d on and e and
Способ получени 1,3-диоксаиов кондеисацией олефинов с альдегидами в присутствии катализаторов кислого характера, отличающийс тем, что исходные реагенты нропускают иод давлением до 100 ат при температуре 150-300° С над катализаторами в виде веществ кислого характера, панесениых на нористые носители.The method of producing 1,3-dioxaia by konisation of olefins with aldehydes in the presence of acidic catalysts, characterized in that the starting reagents do not allow iodine pressure to 100 at a temperature of 150-300 ° C over the catalysts in the form of an acidic substance, panecene on an eluate carriers.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU181079A1 true SU181079A1 (en) |
Family
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2480282A1 (en) * | 1980-04-10 | 1981-10-16 | Ogorodnikov Sergei | Alkyl-dioxan prodn. from olefin(s) and formaldehyde - with recycle of aq. phase using conc. liq. formaldehyde for make=up |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2480282A1 (en) * | 1980-04-10 | 1981-10-16 | Ogorodnikov Sergei | Alkyl-dioxan prodn. from olefin(s) and formaldehyde - with recycle of aq. phase using conc. liq. formaldehyde for make=up |
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