Investigation of WO3-based H2S Sensor Materials for Coal Gasification Systems


SEM pictures of tungsten oxide (WO<sub>3</sub>) and<br/>WO<sub>3</sub> doped with titanium nanomaterials.
SEM pictures of tungsten oxide (WO3) and
WO3 doped with titanium nanomaterials.
University of Texas at El Paso
Website:  University of Texas at El Paso
Award Number:  NT0008022
Project Duration:  01/16/2009 – 12/15/2013
Total Award Value:  $249,505
DOE Share:  $249,505
Performer Share:  $0
Technology Area:  University Training and Research
Key Technology:  Sensors and Controls
Location:  El Paso, Texas

Project Description

The project is to develop a new Ti-doped WO3 sensor nanomaterial for H2S detection. The objectives are to achieve improved response time, controlled microstructure for long-term stability, and narrow particle size distribution for improved sensor characteristics and performance in a WO3 material. This research will investigate H2S detection selectivity, sensitivity and stability of undoped and Ti-doped WO3. The research will investigate the surface functionalization and stabilization of WO3 by metals such as Au and Al for H2S sensors. A comprehensive suite of measurements, together with temperature-dependent electrical characterizations and performance evaluation tests, will be performed to assess their feasibility for use in coal gasification systems for H2S detection and monitoring.

Project Benefits

This project will investigate a WO3-based H2S sensor material for coal gasification systems. It will support efforts to develop sensors for harsh conditions to assist in monitoring the operation and performance of critical components within gasification facilities. Technical improvements to overcome existing barriers to improving H2S sensors will be made. In addition, a knowledge database will be created to address future issues relevant to the NETL sensor program. Ultimately, these advancements will result in lower operating costs for gasification facilities.

Contact Information

Federal Project Manager 
Richard Dunst:
Technology Manager 
Principal Investigator 
Felicia Manciu:

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