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A hydrogen or oxygen electrochemical pumping catalytic membrane reactor and its applications

A catalytic membrane reactor and electrochemical technology, applied in the field of converting benzene to aniline, can solve the problems of low maximum conversion rate and difficult catalyst regeneration.

Inactive Publication Date: 2012-10-31
CUF - QUIMICOS INDIS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the catalyst and the process have difficulties in regeneration of the catalyst and the maximum conversion achievable when operating at 300°C and 300 bar is less than 13%

Method used

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  • A hydrogen or oxygen electrochemical pumping catalytic membrane reactor and its applications
  • A hydrogen or oxygen electrochemical pumping catalytic membrane reactor and its applications

Examples

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Effect test

Embodiment 1

[0085] Catalytic reactor with membrane equipped with a device for electrochemical oxygen pumping consisting of a composite catalytic membrane in which the catalyst for the direct amination reaction of benzene is a bimetallic with nickel / nickel oxide and platinum nanoparticles Catalyst; the electrocatalyst in the permeate side is a catalyst with platinum nanoparticles; the porous anode (3) consists, for example, of nickel and zirconium oxide cermet (YSZ) stabilized with yttrium oxide; the cathode (1), for example, of lanthanum strontium manganite (LSM); the electrolyte (2) is yttrium-doped zirconium phosphate.

Embodiment 2

[0087] Electrocatalytic pumping catalytic membrane reactor in which hydrogen can be removed from the surface of the chemical catalyst by electrochemical pumping of hydrogen, which includes a nickel / nickel oxide chemical catalyst to provide direct amination of benzene to aniline, the chemical catalyst is used The platinum nanoparticles are modified, which in turn provide for the electro-oxidation of hydrogen. The composite catalyst should be deposited in the interface between the anode (3) and the electrolyte (2); the anode (3) consists of a porous palladium film about 1 μm thick; the electrolyte (2) consists of yttrium-doped zirconium phosphate; the cathode ( 1) Constructed of a 0.5 μm thick porous palladium membrane. In the electrolyte (2) / cathode interface the platinum electrocatalyst should be deposited as nanoparticles. This is used to provide hydrogen reduction or reaction of hydrogen with oxygen.

Embodiment 3

[0089] An electrocatalytic pumping catalytic membrane reactor in which oxygen is electrochemically pumped onto the surface of a chemical catalyst that includes a nickel / nickel oxide chemical catalyst to provide direct amination of benzene and electrooxidation of oxygen. The composite membrane consists of a porous YSZ anode (3) impregnated with the nickel / nickel oxide catalyst, an impregnable YSZ electrolyte (2) layer, and a lanthanum strontium manganite (LSM) cathode (1) layer.

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Abstract

The present invention describes a new type of chemical reactor, described as hydrogen or oxygen electrochemical pumping catalytic membrane reactor. This new type of reactor is particularly suitable for increasing the selectivity and the conversion rate of dehydrogenation, hydrogenation, deoxidation and oxidation reactions and namely in the direct amination reaction of hydrocarbons. This reactor can be used for the production of several chemical compounds, such as the direct amination of hydrocarbons and in particular for the synthesis of aniline from benzene. In this application, wherein hydrogen is removed by electrochemical pumping of the hydrogen formed or by oxygen pumping so, as hydrogen is formed, it is oxidized. This new reactor exhibits benzene to aniline conversion higher than 40 %.

Description

technical field [0001] The present invention describes a hydrogen or oxygen electrochemical pumping catalytic membrane reactor for the purpose of increasing the conversion and / or selectivity of hydrogenation, dehydrogenation, deoxygenation and oxidation reactions in liquid or gas phase. [0002] The invention also describes the use of a hydrogen or oxygen electrochemical pumping catalytic membrane reactor for the direct amination of hydrocarbons by reacting them with ammonia, in particular for the conversion of benzene to aniline. Summary of the invention [0003] The present invention proposes a novel electrochemical catalytic membrane reactor that increases the yield of the direct amination reaction of hydrocarbons by electrochemical pumping of oxygen and / or hydrogen. [0004] It is an object of the present invention to disclose an electrochemical catalytic membrane reactor with means for electrochemical pumping of hydrogen and / or oxygen. [0005] A preferred embodiment o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/24H01M8/06C07C209/02C25B9/19C25B9/23
CPCH01M4/921H01M8/004H01M8/0681Y02E60/525H01M2008/1293H01M8/06C07C209/02B01J19/2475H01M8/103H01M4/9016H01M2250/00Y02E60/50H01M8/086H01M4/94Y02P70/50C07C211/46
Inventor A·M·马加良斯曼德斯
Owner CUF - QUIMICOS INDIS
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