SU445667A1 - The method of producing thiophene - Google Patents

The method of producing thiophene

Info

Publication number
SU445667A1
SU445667A1 SU1904978A SU1904978A SU445667A1 SU 445667 A1 SU445667 A1 SU 445667A1 SU 1904978 A SU1904978 A SU 1904978A SU 1904978 A SU1904978 A SU 1904978A SU 445667 A1 SU445667 A1 SU 445667A1
Authority
SU
USSR - Soviet Union
Prior art keywords
catalyst
selectivity
thiophene
producing
producing thiophene
Prior art date
Application number
SU1904978A
Other languages
Russian (ru)
Inventor
Владимир Иванович Чернов
Original Assignee
Институт Катализа Сибирского Отделения Ан Ссср
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Институт Катализа Сибирского Отделения Ан Ссср filed Critical Институт Катализа Сибирского Отделения Ан Ссср
Priority to SU1904978A priority Critical patent/SU445667A1/en
Application granted granted Critical
Publication of SU445667A1 publication Critical patent/SU445667A1/en

Links

Landscapes

  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Catalysts (AREA)

Description

1one

Изобретение относитс  к усовершенствованию способа получени  тиофена.This invention relates to an improvement in the process for producing thiophene.

Известен способ получени  тиофена деалкилированием 2-метилтиофена в присутствии цеолитного катализатора в проточной установке при 180-500°С.A known method for producing thiophene by dealkylation of 2-methylthiophene in the presence of a zeolite catalyst in a flow-through installation at 180-500 ° C.

Недостатком этого способа  вл етс  низка  селективность процесса. Избирательность по тиофепу па указанном катализаторе не превышает 50%.The disadvantage of this method is the low selectivity of the process. Selectivity for thiophepa pas specified catalyst does not exceed 50%.

С целью повышени  селективности процесса в качестве катализатора используют п тиокись ванади , нанесенную на окись алюмини  или двуокись кремни .In order to increase the selectivity of the process, vanadium pentoxide supported on alumina or silica is used as a catalyst.

Селективность предлагаемого способа получени  тиофепа 87-90%.The selectivity of the proposed method for producing thiofep is 87-90%.

Пример 1. Катализатор готов т нанесением водного раствора оксалата ванади  на силикагель в расчете 0,5 вес. % V2O5. После сушки и прокаливани  в токе воздуха при 500°С 4 мл катализатора загружают в стекл нный реактор. Затем через него пропускают 2-метилтиофен со скоростью 0,098 г/час. Опыт провод т при 500°С в токе гели  (2,5 л/час). Выход тиофена 8%. Селективность 90%.Example 1. The catalyst is prepared by applying an aqueous solution of vanadium oxalate on silica gel in a calculation of 0.5 weight. % V2O5. After drying and calcining in a stream of air at 500 ° C, 4 ml of catalyst are loaded into a glass reactor. Then 2-methylthiophen is passed through it at a rate of 0.098 g / hour. The test was carried out at 500 ° C in a current of gels (2.5 l / h). Thiophene yield 8%. Selectivity of 90%.

Пример 2. Катализатор готов т по примеру 1 с расчетом нанесени  40% V2O5. Опьп провод т аналогично примеру 1. Выход тио фена 67%. Селективность 88%.Example 2. The catalyst was prepared in accordance with Example 1 with the calculation of the deposition of 40% V2O5. OPP is carried out analogously to example 1. The yield of thiophene is 67%. Selectivity of 88%.

Пример 3. Катализатор готов т нанесением оксалата вападп  на окпсь алюмини  в расчете 1 вес. % VoOs. Опыт провод т по примеру I. Выход тиофеиа 15%. Селективность 90%.Example 3. The catalyst was prepared by applying vadpad oxalate to aluminum oxide in the calculation of 1 weight. % Voos. The experiment was carried out according to example I. The yield of thiofia is 15%. Selectivity of 90%.

Пример 4. Катализатор готов т по примеру 1 в расчете нанесени  40% V2O5. Опыт провод т аналогично примеру 1. Выход тиофена 63%. Селективность 87%.Example 4. The catalyst was prepared according to Example 1 with the calculation of the deposition of 40% V2O5. The experiment was carried out analogously to example 1. The yield of thiophene was 63%. Selectivity of 87%.

Результаты деалкилировапи  2-метилтиофена в присутствии известных (1-4) и предлагаемых (5-8) катализаторов приведены в таблице.The results of dealkylation of 2-methylthiophene in the presence of known (1-4) and proposed (5-8) catalysts are given in the table.

Предмет изобретени Subject invention

Способ получени  тиофена деалкилированием 2-метилтиофена в присутствии катализатора , отличающийс  тем, что, с целью повышени  селективности процесса, в качестве катализатора используют п тиокись ванади , нанесенную на двуокись кремни  или окись алюмини .A method of producing thiophene by dealkylation of 2-methylthiophene in the presence of a catalyst, characterized in that, in order to increase the selectivity of the process, vanadium pentoxide supported on silica or alumina is used as a catalyst.

SU1904978A 1973-04-04 1973-04-04 The method of producing thiophene SU445667A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1904978A SU445667A1 (en) 1973-04-04 1973-04-04 The method of producing thiophene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1904978A SU445667A1 (en) 1973-04-04 1973-04-04 The method of producing thiophene

Publications (1)

Publication Number Publication Date
SU445667A1 true SU445667A1 (en) 1974-10-05

Family

ID=20548754

Family Applications (1)

Application Number Title Priority Date Filing Date
SU1904978A SU445667A1 (en) 1973-04-04 1973-04-04 The method of producing thiophene

Country Status (1)

Country Link
SU (1) SU445667A1 (en)

Similar Documents

Publication Publication Date Title
KR870000055B1 (en) Olefin bond isomerisation process
Haldeman et al. A study of the water content of A silica-alumina catalyst and its component oxides
US2748090A (en) Manufacture of solid polymerization catalysts
SU445667A1 (en) The method of producing thiophene
GB592116A (en) Stabilized alumina and preparation thereof
SU670218A3 (en) Method of producing pyridine and 3-methyl pyridine
US3045054A (en) Nickel oxide catalysts and their use in polymerizing olefins
US3898182A (en) Catalyst treatment
JPS63313739A (en) Production of vinylcyclohexane
SU1683811A1 (en) Catalyst for isomerization of butene and dehydration of isobutyl alcohol
JPS59107921A (en) Crystalline borosilicic acid, its manufacture and manufacture of p-xylene using it
JPH0627078B2 (en) Paraxylene production method
SU438631A1 (en) The method of producing isobutylene
SU136325A1 (en) Method of preparing catalyst for dehydrating ethyl alcohol to acetaldehyde
SU151684A1 (en) Method for producing maleic anhydride
Kaneko et al. Structure and Activity of V-Sn-W Oxide Catalyst for Butene Oxidation to Acetic Acid
SU891146A1 (en) Catalyst for vapour-phase isomerization of cyclohexanoxime to e-caprolactam
SU480435A1 (en) The method of purification of exhaust gases from sulfur dioxide
SU127243A1 (en) The method of obtaining wide porous carrier of silica gel or aluminosilicate
SU349220A1 (en)
SU1162482A1 (en) Method of obtaining catalyst for disproportioning olefins
US1945267A (en) Contact sulphuric acid process
SU536837A1 (en) Method of preparing catalyst for disproportioning olefins
SU948282A3 (en) Method for activating alumina or silica-alumina catalyst
SU432922A1 (en) MGMES AND OXIDATING CHRONORIZES OF ACETSH1ENA