SU899520A1 - Process for producing dibenzyl - Google Patents
Process for producing dibenzyl Download PDFInfo
- Publication number
- SU899520A1 SU899520A1 SU802945852A SU2945852A SU899520A1 SU 899520 A1 SU899520 A1 SU 899520A1 SU 802945852 A SU802945852 A SU 802945852A SU 2945852 A SU2945852 A SU 2945852A SU 899520 A1 SU899520 A1 SU 899520A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- toluene
- dibenzyl
- oxygen
- producing
- selectivity
- Prior art date
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Description
(54) СПОСОБ ПОЛУЧЕНИЯ ДИБЕНЗИЛА(54) METHOD OF OBTAINING DIBENZYL
1one
Изобретение относитс к способам получени дибензила и может быть использовано в химической промышленности .The invention relates to methods for producing dibenzyl and can be used in the chemical industry.
Известны способы получени дибензила , например конденсацией 1,2-дигалоидэтанов с бензолом в присутствии AlClj , действием металлического натри на хлористый бензил 1.Methods are known for the preparation of dibenzyl, for example, by condensation of 1,2-dihaloethanes with benzene in the presence of AlCl, by the action of metallic sodium on benzyl chloride 1.
Наиболее близким к изобретению вл етс способ получени дибензила путем дегидродимеризации толуола в присутствии кислорода и йода при мольном соотношении 1:0,85:0,02 при 649С в присутствии твердой инертной насадки и затем при в присутствии катализатора, состо щего из хромита меди и оксида кали . Степень конверсии толуола 24,4% 2.Closest to the invention is a method of producing dibenzyl by dehydrodimerization of toluene in the presence of oxygen and iodine at a molar ratio of 1: 0.85: 0.02 at 649 ° C in the presence of a solid inert packing and then in the presence of a catalyst consisting of copper chromite and oxide Kali. The degree of conversion of toluene is 24.4% 2.
Недостатком данного способа вл етс низка селективность процесса, котора составл ет 23,0 %.The disadvantage of this method is the low selectivity of the process, which is 23.0%.
Целью изобретени вл етс повышение селективности процесса.The aim of the invention is to increase the selectivity of the process.
Поставленна цель достигаетс способом получени либензила путем дегидродимеризации толуола в ррисут-ствии кислорода барботированием последних при мольном соотношении 4-13:1 и температуре 470-670°С через расплав гйдроксида кали или натри .This goal is achieved by the method of producing libenzyl by dehydrodimerization of toluene at oxygen risk by bubbling the latter at a molar ratio of 4–13: 1 and a temperature of 470–670 ° C through a potassium or sodium hydroxide melt.
Врем контактировани газообразной смеси при высоте расплава 26,5 см The contact time of the gaseous mixture at a melt height of 26.5 cm
10 составл ет 0,7-0,8 с.10 is 0.7-0.8 seconds.
Примеры. Газообразную смесь толуола и воздуха в соотношении толуол/кислород 4:1 (моль) барботируют через расплав гйдроксида 5 натри высотой 26,5 см в реакторе, выполненном из стали XI8H9T. Скорость дозировани толуола 155 мл/ч. .,Examples A gaseous mixture of toluene and air in a ratio of toluene / oxygen of 4: 1 (mol) is bubbled through a sodium hydroxide melt 5 of height 26.5 cm in a reactor made of steel XI8H9T. The toluene dosing rate is 155 ml / h. .
Результаты экспериментов, проведенных в различных услови х, сведены The results of experiments conducted under various conditions are summarized.
20 в таблицу.20 per table.
Таким образом, предложенный способ позвол ет получать дибекзил из доступного продукта с высокой селективностью . Процессу свойственна несложна Thus, the proposed method allows to obtain dibekzil from an available product with high selectivity. Process peculiar is simple
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU802945852A SU899520A1 (en) | 1980-06-25 | 1980-06-25 | Process for producing dibenzyl |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU802945852A SU899520A1 (en) | 1980-06-25 | 1980-06-25 | Process for producing dibenzyl |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU899520A1 true SU899520A1 (en) | 1982-01-23 |
Family
ID=20904170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU802945852A SU899520A1 (en) | 1980-06-25 | 1980-06-25 | Process for producing dibenzyl |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU899520A1 (en) |
-
1980
- 1980-06-25 SU SU802945852A patent/SU899520A1/en active
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