Detect Hydrogen with Tape, Polymers, or Ceramics
Matrix variations can be flammable resistent Practical and low-cost gas sensor Faster discoloration reaction Can operate over a wider ambient temperature range Less affected by weather and environmental contaminents and / or presence of other reactive gases
Used for encapsulating hydrogen detection pigments to make such sensors to respond to hydrogen rapidly, with greater sensitivity, and increased durability.
Hydrogen gas is used in fuel cells, electric vehicles, and NASA rockets. It is odorless, colorless and highly flammable, with a lower flammability limit of 4% in the air. Therefore, when storing and transporting hydrogen, it is important that leaks are immediately detected. One common method for detecting hydrogen gas leaks is the use of palladium metal based sensors. Unfortunately, sensors based on palladium alloys require a high operating temperature (200˚C) and even higher temperatures (500˚C) to reactivate the sensing material. Palladium alloys are also sensitive to other gases commonly found in the atmosphere such as water vapor, carbon monoxide and hydrogen sulfide.
Patent Number: US8048384B1
Application Number: US2010872090A
Inventor: Bokerman, Gary | Tabatabaie-Raissi, Ali | Muradov, Nazim
Priority Date: 31 Aug 2010
Priority Number: US8048384B1
Application Date: 31 Aug 2010
Publication Date: 1 Nov 2011
IPC Current: G01N002175 | G01N003122 | G01N003352 | G01N000700 | G01N002176 | G01N0033497
US Class: 422400 | 0730232 | 07303105 | 07303106 | 422052
Assignee Applicant: University of Central Florida Research Foundation Inc.lando
Title: Chemochromic hydrogen sensors
Usefulness: Chemochromic hydrogen sensors
Summary: Two layer chemochromic hydrogen sensor i.e. irreversible color changing sensor (claimed), for a fossil-based transportation fuel application. Uses include but are not limited to a space vehicle application i.e. automobile application, transportation application, oil refineries and chemical plants.
Novelty: Two layer chemochromic hydrogen sensor i.e. irreversible color changing sensor, for e.g. fossil-based transportation fuel application, has composite layer provided with supports that include platinum group metal compound
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