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Sensor zur Bestimmung der Konzentration von Schwefelverbindungen in einer Flüssigkeit

Title data

Hürland, Armin ; Kemmler, Roland ; Moos, Ralf ; Plog, Carsten ; Stengel, Thomas ; Voigtländer, Dirk:
Sensor zur Bestimmung der Konzentration von Schwefelverbindungen in einer Flüssigkeit.
DE10045939 (2000)

Official URL: Volltext

Abstract in another language

Die Erfindung betrifft einen Sensor (2) zur Bestimmung der Konzentration von Schwefelverbindungen in einer Flüssigkeit. Er umfasst:
- eine mit der zu analysierenden Flüssigkeit in Kontakt stehende Arbeitselektrode (10);
- eine von der zu analysierenden Flüssigkeit isolierte Referenzelektrode (6);
- eine zwischen der Arbeitselektrode (10) und der Referenzelektrode (6) befindliche flüssigkeitsundurchlässige Membran (4), die für ein Ion, das mit den Schwefelverbindungen in der zu analysierenden Flüssigkeit eine chemische Verbindung eingehen kann, durchlässig ist;
- ein Referenzmaterial (6), das mit der Referenzelektrode (6) in Kontakt steht oder diese bildet.

Abstract in another language

A probe has a working electrode (10) contacting a liquid to be analyzed, a reference electrode (6) isolated from the liquid and a liquid impermeable membrane (4) between them. A reference material contacts or forms the reference electrode. Ions that can chemically react with sulfur compounds in the liquid can pass through the electrode Independent claims are included for the following: (a) Apparatus has probes as above both upstream and downstream of an adsorber in a fuel line Comparison of the signals from the probes measures the level of sulfur in the adsorber. (b) Apparatus has probes upstream and downstream of an adsorber in a fuel line. A reference electrode of the downstream probe contacts the untreated fuel upstream of the adsorber. (c) Apparatus has a probe as above measuring the level of sulfur in an adsorber in a fuel line. The working electrode contacts the fuel upstream of the adsorber and the reference electrode contacts the fuel downstream of the adsorber. (d) Use of the above probe to determine the amount of sulfur in a NOx trap in an engine exhaust purification system. The engine is a petrol engine using a lean mixture. Preferred Features: The reference electrode is made from an ion that can be oxidized and can permeate the membrane. The reference material is a liquid with a specified sulfur concentration. The membrane is impermeable to fuels, e.g. petrol, diesel, heating oil, liquefied fuel gas, methanol and ethanol. A third electrode is on the membrane and a voltage is connected across it and the working electrode.

Further data

Item Type: Patent
Patent Applicant: DaimlerChrysler AG, 70567 Stuttgart
Date of the patent's registration: 16 September 2000
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Faculties
Faculties > Faculty of Engineering Science > Chair Functional Materials
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: No
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 07 Dec 2015 07:55
Last Modified: 04 Apr 2016 08:05
URI: https://eref.uni-bayreuth.de/id/eprint/24705