RU95113230A - Dehydrohalogenation catalyst - Google Patents

Dehydrohalogenation catalyst

Info

Publication number
RU95113230A
RU95113230A RU95113230/04A RU95113230A RU95113230A RU 95113230 A RU95113230 A RU 95113230A RU 95113230/04 A RU95113230/04 A RU 95113230/04A RU 95113230 A RU95113230 A RU 95113230A RU 95113230 A RU95113230 A RU 95113230A
Authority
RU
Russia
Prior art keywords
catalyst
palladium
concentration
regeneration
dehydrohalogenation
Prior art date
Application number
RU95113230/04A
Other languages
Russian (ru)
Inventor
Шедель Райнер
De]
Нойбауер Ханс-Дитер
Бирке Петер
Берушот Ханс-Дитер
Фризе Ханс-Георг
Вебер Клаус
Нойманн Ульрих
Грундманн Ханнелоре
Original Assignee
Лейна-Катализаторен ГмбХ (DE)
Лейна-Катализаторен ГмбХ
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 Лейна-Катализаторен ГмбХ (DE), Лейна-Катализаторен ГмбХ filed Critical Лейна-Катализаторен ГмбХ (DE)
Publication of RU95113230A publication Critical patent/RU95113230A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C1/00—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon
    • C07C1/26—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only halogen atoms as hetero-atoms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/44—Palladium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/12—Silica and alumina
    • B01J35/19—
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2521/00—Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium
    • C07C2521/12—Silica and alumina
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
    • C07C2523/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of noble metals
    • C07C2523/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of noble metals of the platinum group metals
    • C07C2523/44—Palladium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Catalysts (AREA)

Abstract

FIELD: catalysts for organic syntheses. SUBSTANCE: goal of invention is to develop dehydrohalogenation catalyst on which under mild process conditions halogenated hydrocarbons would be completely converted. Catalyst should substantially exceed known catalysts in respect to service life and be suitable for regeneration. Invention is also aimed at developing dehydrohalogenation process, which should be performed in mild conditions without regeneration for more than 2500 h, and also at producing such reaction products which could be utilized with no further purification. The task is solved by using Pd catalyst on chlorine-free alumino-silicate carrier containing 0.5 to 8 wt % palladium and 1 to 50 wt % silicon dioxide, wherein palladium concentration across catalyst particle cross-section has certain maximum in the region 50-250 mcm below outer particle surface, Pd concentration in this region exceeding average Pd concentration by a factor 1.5 to 7. EFFECT: enhanced efficiency of catalyst.

Claims (1)

Изобретение относится к новому катализатору гидродегалогенирования, а также к его применению при гидроотщеплении хлора от хлорсодержащих углеводородов. Задача данного изобретения заключалась в разработке катализатора гидродегалогенирования, на котором при мягких условиях процесса полностью превращаются содержащие галоген углеводороды, обладающий по сравнению с ранее известными катализаторами значительно большим сроком службы и способный к регенерированию, а такие в разработке технологии гидродехлорирования, осуществляемого при преимущественно мягких условиях без регенерации в течение более 2500 ч, а также обеспечивающей получение таких продуктов реакции, которые без дальнейшей очистки могут быть использованы далее. Эта задача решается благодаря предлагаемому палладиевому катализатору на алюмосиликатном носителе, не содержащему соединений хлора, содержащему от 0,5 до 8 мас.% палладия и от 1 до 50 мас.% двуокиси кремния и в котором концентрация палладия по поперечному сечению частиц катализатора в диапазоне от 50 до 250 мкм ниже внешней поверхности частиц проходит через определенный максимум, в котором концентрация палладия составляет 1,5- до 7-кратной величины средней концентрации палладия в катализаторе. Эта задача решается также при использовании такого катализатора для гидродехлорирования хлоруглеводородов.The invention relates to a new hydrodehalogenation catalyst, as well as to its use in hydrochloride removal of chlorine from chlorinated hydrocarbons. The objective of this invention was to develop a hydrodehalogenation catalyst, on which, under mild process conditions, halogen-containing hydrocarbons are completely converted, which, compared to previously known catalysts, have a significantly longer service life and are capable of regeneration, and such in the development of hydrodechlorination technology carried out under predominantly mild conditions without regeneration for more than 2500 hours, as well as providing such reaction products that without further Sources can be used further. This problem is solved thanks to the proposed palladium catalyst on an aluminosilicate carrier that does not contain chlorine compounds, containing from 0.5 to 8 wt.% Palladium and from 1 to 50 wt.% Silicon dioxide and in which the palladium concentration over the cross section of the catalyst particles in the range from 50 to 250 μm below the outer surface of the particles passes through a certain maximum at which the palladium concentration is 1.5 to 7 times the average concentration of palladium in the catalyst. This problem is also solved by using such a catalyst for hydrodechlorination of chlorohydrocarbons.
RU95113230/04A 1994-07-26 1995-07-21 Dehydrohalogenation catalyst RU95113230A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEP4426390.2 1994-07-26
DEP4426389.9 1994-07-26
DE4426389A DE4426389C1 (en) 1994-07-26 1994-07-26 Prepn. of hydro:de:halogenation catalyst with high activity under mild conditions

Publications (1)

Publication Number Publication Date
RU95113230A true RU95113230A (en) 1997-06-10

Family

ID=6524137

Family Applications (1)

Application Number Title Priority Date Filing Date
RU95113230/04A RU95113230A (en) 1994-07-26 1995-07-21 Dehydrohalogenation catalyst

Country Status (2)

Country Link
DE (1) DE4426389C1 (en)
RU (1) RU95113230A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19782189B3 (en) * 1996-12-16 2017-07-13 Asahi Kasei Kabushiki Kaisha Supported noble metal material
DE19943035C2 (en) * 1999-09-09 2003-06-12 Bayer Ag Process for the production or extraction of 2,6-dichlorotoluene

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1036830B (en) * 1954-03-23 1958-08-21 Laporte Chemical Process for the production of a palladium catalyst deposited on a carrier material for the reduction stage in the production of hydrogen peroxide via alkylated or arylated anthraquinhydrons or anthrahydroquinones

Also Published As

Publication number Publication date
DE4426389C1 (en) 1996-01-18

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