Fiber Optical Micro-detectors for Oxygen Sensing in Power Plants

Technical Report · Fri Jun 30 04:00:00 EDT 2006

DOI:https://doi.org/10.2172/892152· OSTI ID:892152

Baker, Gregory L ^[1]; Ghosh, Ruby N; Osborn, D J; Zhang, Po

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1. Michigan State University

A reflection mode fiber optic oxygen sensor that can operate at high temperatures for power plant applications is being developed. The sensor is based on the {sup 3}O{sub 2} quenching of the red emission from hexanuclear molybdenum chloride clusters. Our approach towards immobilizing the potassium salt of the molybdenum cluster, K{sub 2}Mo{sub 6}Cl{sub 14}, at the far end of an optical fiber is to embed the cluster in a thermally cured sol-gel matrix particle. This particle-in-binder approach affords fibers with greatly improved mechanical properties, as compared to previous approaches. The sensor was characterized in 2-21% gas phase oxygen at 40, 70 and 100 C. These are promising results for a high temperature fiber optical oxygen sensor based on molybdenum chloride clusters.

• Research Organization: Michigan State University
• Sponsoring Organization: USDOE
• DOE Contract Number: FC26-02NT41582
• OSTI ID: 892152
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
47 OTHER INSTRUMENTATION
DESIGN
FIBER OPTICS
GAS ANALYSIS
MECHANICAL PROPERTIES
MOLYBDENUM CHLORIDES
ON-LINE MEASUREMENT SYSTEMS
OXYGEN
SENSORS
THERMAL POWER PLANTS