SU491601A1 - The method of obtaining para-and / or orthoxylene - Google Patents

The method of obtaining para-and / or orthoxylene

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Publication number
SU491601A1
SU491601A1 SU1990413A SU1990413A SU491601A1 SU 491601 A1 SU491601 A1 SU 491601A1 SU 1990413 A SU1990413 A SU 1990413A SU 1990413 A SU1990413 A SU 1990413A SU 491601 A1 SU491601 A1 SU 491601A1
Authority
SU
USSR - Soviet Union
Prior art keywords
catalyst
orthoxylene
para
metaxylene
increase
Prior art date
Application number
SU1990413A
Other languages
Russian (ru)
Inventor
Юрий Илларионович Козорезов
Ольга Андреевна Лазарева
Original Assignee
Предприятие П/Я В-8376
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 Предприятие П/Я В-8376 filed Critical Предприятие П/Я В-8376
Priority to SU1990413A priority Critical patent/SU491601A1/en
Application granted granted Critical
Publication of SU491601A1 publication Critical patent/SU491601A1/en

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Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Landscapes

  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

16,6; метаксилол - 43,4; ортоксилол-13,2; мезитилен - 3,9; псевдокумол - 8,9; гемимеллитол - 3,5. Конверси  метаксилола составл ет 56,6%, суммарный выход пара-и ортоксилола от прореагировавшего метаксилола 52,6 мол. %. Выход суммы пара- и ортоксилола с 1 см катализатора составл ет 2 г/ч.16.6; metaxylene - 43.4; orthoxylene-13,2; mesitylene - 3.9; pseudocumene - 8.9; hemimellitol - 3.5. Conversion of metaxylene is 56.6%, the total yield of para-and ortho-xylene from reacted meta-xylene is 52.6 mol. % The yield of the amount of para- and ortho-xylene with 1 cm of catalyst is 2 g / h.

Пример 2. При изомеризации метаксилола на том же катализаторе, что и в примере 1, при атмосферном давлении, температуре 400°С, объемной скорости 5 и длительности 1 ч был получен катализат следующего состава, вес. %: бензол - 0,1; толуол-1,8; параксилол-19,6; метаксилол - 60,4; ортоксилол-14 ,8; мезитилен-0,8; псевдокумол - 2,0; гемимеллитол - 0,3. Конверси  метаксилола составл ет 39,6%, выход пара- и ортоксилолов от прореагировавшего метаксилола мол. %. Выход суммы пара- и ортоксило87 ,4Example 2. When isomerization of metaxylene on the same catalyst as in example 1, at atmospheric pressure, temperature 400 ° C, a space velocity of 5 and a duration of 1 hour, the catalyst was obtained of the following composition, weight. %: benzene - 0.1; toluene-1,8; para-xylene-19,6; metaxylene - 60.4; orthoxylene-14, 8; mesitylene-0,8; pseudocumene - 2.0; hemimellitol - 0.3. Conversion metaxylene is 39.6%, the yield of para- and ortho-xylene from the reacted metaxylene mol. % The output of the sum of para- and orthoxyl87, 4

г/ч.g / h

лов с 1 СМ fishing with 1 CM

Claims (1)

катализатора составл ет 2,7 Формула изобретени catalyst is 2.7 Способ получени  пара- и/или ортоксилола путем изомеризации метаксилола в паровой фазе при повышенной температуре в присутствии катализатора па основе окиси алюмини , отличаюшийс  тем, что, с целью повышени  селективности процесса и увеличени  выхода целевого продукта, используют катализатор, дополнительно содержащий модифицирующую добавку четырехфтористого кремни .The method of producing para- and / or ortho-xylene by isomerizing metaxylene in the vapor phase at elevated temperature in the presence of a catalyst on an alumina-based catalyst, characterized in that, in order to increase the selectivity of the process and increase the yield of the target product, a catalyst is additionally containing silicon tetrafluoride modifier .
SU1990413A 1974-01-25 1974-01-25 The method of obtaining para-and / or orthoxylene SU491601A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1990413A SU491601A1 (en) 1974-01-25 1974-01-25 The method of obtaining para-and / or orthoxylene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1990413A SU491601A1 (en) 1974-01-25 1974-01-25 The method of obtaining para-and / or orthoxylene

Publications (1)

Publication Number Publication Date
SU491601A1 true SU491601A1 (en) 1975-11-15

Family

ID=20573953

Family Applications (1)

Application Number Title Priority Date Filing Date
SU1990413A SU491601A1 (en) 1974-01-25 1974-01-25 The method of obtaining para-and / or orthoxylene

Country Status (1)

Country Link
SU (1) SU491601A1 (en)

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