SU1022969A1 - Method of producing -butyrolactone - Google Patents

Method of producing -butyrolactone Download PDF

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Publication number
SU1022969A1
SU1022969A1 SU792719037A SU2719037A SU1022969A1 SU 1022969 A1 SU1022969 A1 SU 1022969A1 SU 792719037 A SU792719037 A SU 792719037A SU 2719037 A SU2719037 A SU 2719037A SU 1022969 A1 SU1022969 A1 SU 1022969A1
Authority
SU
USSR - Soviet Union
Prior art keywords
butyrolactone
oxide
producing
catalyst
maleic acid
Prior art date
Application number
SU792719037A
Other languages
Russian (ru)
Inventor
Михаил Иванович Якушкин
Олег Шимонович Горбатый-Калика
Эльвира Антониновна Любимова
Игорь Константинович Беренский
Анатолий Витальевич Ермолаев
Виктор Григорьевич Родионов
Original Assignee
Предприятие П/Я Р-6913
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 Р-6913 filed Critical Предприятие П/Я Р-6913
Priority to SU792719037A priority Critical patent/SU1022969A1/en
Application granted granted Critical
Publication of SU1022969A1 publication Critical patent/SU1022969A1/en

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Description

The invention relates to chemical technology, more specifically to a method for producing y-butyrolactone, which is distributed as a solvent and plasticizer.
A known method for producing y-butyrolactone according to Reppe 1. The process proceeds in three stages: butynediol-1, 4 synthesis from acetylene and formaldehyde; hydrogenation of butyndiol-1 to butanediol-1,4; dehydrogenation of butanediol-1, A to y-butyrolactone.
However, this method is characterized by a multistep and, as a result, an insufficiently high yield of the target product, the explosion hazard of the process associated with the necessity of using acetylene as a reagent.
The closest technical solution to the invention is a method for producing U-butyrolactone by hydrogenating maleic acid esters using a zinc-copper-containing catalyst on a carrier at 2bO280 ° C, an ether flow rate equal to 0.0b h, molar ratio of ether: hydrogen equal to 1 : 70. The yield of 2-butyrolactone reaches 78.3% of the theoretical 2.
However, this method is also characterized by an insufficiently high yield of the target product, low catalyst activity and, as a consequence, its low productivity and high energy costs. The purpose of the invention is to increase the productivity of the process.
The goal is achieved by the use of an oxide copper-zinc oxide catalyst for alumina, containing wt.%: Copper oxide 52-5b, zinc oxide 10-1, chromium oxide 12-16, aluminum oxide 18-22, and the process is carried out as a zinc-copper-containing catalyst. volumetric feed rate of 0.2-0.3 hours
Due to a more active catalyst, it is possible to increase the speed of the feedstock, which allows to increase the productivity of the process by more than three times.
PRI me R 1. Hydrogenation of maleic acid dibutyl ester is carried out in a flow-through installation having a reactor made of steel X 18 H 10 T with a diameter of 35 mm and a height of 600 mm.
Dibutyl ether has the following indicators: the content of the basic substance is 98.6%; 1, 992.
Charged to the reactor 300 g of catalyst containing, wt.%: CuO52
 12 5 ZnOI
 22 The hydrogenation process is carried out at 2 W O, atmospheric pressure, the space velocity of the feedstock is 0.2 h, the ether: hydrogen molar ratio is 1:25.
Skip 1 116 weight.h. dibutyl ester of maleic acid and get 111,1 parts by weight catalyzate having the following composition:
weight.h. %% U-butyrolactone 33.3 29.8 Tetrahydro0 furan C, EZ, 5 Butyl
alcohol 68.8 61.9 Dibutyl ester Maleic acid 0.3 O, Water 0.87 0.8 Resin 2.87 2.6
0 The catalysate is subjected to vacuum distillation and 95.7% is isolated, the yield of y-butyrolactone B6% of theoretical.
Example2. Under the conditions of Example 1, 5, but with a feedstock volumetric feed rate of 0.3, the hydrogenation of maleic acid dibutyl ester is carried out on a catalyst of composition, wt. I CuO 56
0 CrGO, 16
ZnO10
AliO-}. 18
Pass 11 i, 2 weight.h. dibutyl ether of maleic acid and get 110,2 weight.h. catalyzate of the following composition:
weight.h. %
U-Butyrol 50 acton 31.1 27.6
Tetrahydrofuran5, 0 A, 6
Butyl
spirits67,5 61,7
55 Dibutyl
Ether
Maleinova
acid2.5 23
Water1,1,
310229694
Resins 2,72,5 Convert the dibutyl ester of maximized catalysate to vacuo maleic acid 97.5,
distillation and isolate 89, g of y-but-yield of Jf-butyrolactone 81.2 from the theorem of the third-most olactone.

Claims (1)

  1. (5 ^) METHOD FOR PRODUCING f-BUTIROL zinc-containing catalyst use an oxide of copper-cichromic oxide on alumina, wt.% copper oxide 52-56, zinc oxide 10-1 1 ", chromium oxide 12-16 and aluminum oxide 18-22, and the process is carried out at a feed rate of 0 , 20.3 hours
SU792719037A 1979-01-29 1979-01-29 Method of producing -butyrolactone SU1022969A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU792719037A SU1022969A1 (en) 1979-01-29 1979-01-29 Method of producing -butyrolactone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU792719037A SU1022969A1 (en) 1979-01-29 1979-01-29 Method of producing -butyrolactone

Publications (1)

Publication Number Publication Date
SU1022969A1 true SU1022969A1 (en) 1983-06-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU792719037A SU1022969A1 (en) 1979-01-29 1979-01-29 Method of producing -butyrolactone

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Country Link
SU (1) SU1022969A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5142067A (en) * 1989-12-21 1992-08-25 Union Carbide Chemicals & Plastics Technology Corporation Hydrogenation with Cu-Al-X catalysts
DE4326692A1 (en) * 1993-08-10 1995-02-16 Akzo Nobel Nv Process for the production of gamma-butyrolactone

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
1. Авторское свидетельство СССР Jf 68918, кл. С 07 О 307/32, 1975. 2. Патент JP ЯР 5391 кл. 16 1 31 1968 (прототип). *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5142067A (en) * 1989-12-21 1992-08-25 Union Carbide Chemicals & Plastics Technology Corporation Hydrogenation with Cu-Al-X catalysts
DE4326692A1 (en) * 1993-08-10 1995-02-16 Akzo Nobel Nv Process for the production of gamma-butyrolactone
US5536849A (en) * 1993-08-10 1996-07-16 Akzo Nobel N.V. Process for producing gamma-butyrolactone

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