Permselective Membrane-based In-line Sulfur Monitoring System

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-05-C-2606
Agency Tracking Number: F041-190-0753
Amount: $749,980.00
Phase: Phase II
Program: SBIR
Awards Year: 2005
Solicitation Year: 2004
Solicitation Topic Code: AF04-190
Solicitation Number: 2004.1
Small Business Information
ASPEN SYSTEMS, INC.
184 Cedar Hill Street, Marlborough, MA, 01752
DUNS: 121001945
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: Y
Principal Investigator
 Jae Ryu
 CTO
 (508) 481-5058
 jryu@aspensystems.com
Business Contact
 Kang Lee
Title: CEO
Phone: (508) 481-5058
Email: klee@aspensystems.com
Research Institution
N/A
Abstract
Aspen Systems proposes to develop a highly selective, high sensitivity and fast-response in-line sulfur monitoring system using an advanced membrane-based sensor technology. In Phase I, we developed advanced sol-gel synthesis route to fabricate solid zinc oxide coatings with desired crystalline structure on microporous ceramic membranes. Utilizing these sensors, we successfully produced MEMS sensor module to test the sulfur sensors in the simulated desulfurizer effluent gas streams. Most importantly, we clearly demonstrated the feasibility of measuring organic sulfur concentrations in simulated desulfurization process atmospheres by measuring changes in electrical resistivity of the sulfur sensors. In Phase II, we will further optimize sensor compositions to significantly increase the organic sulfur sensitivity and reduce the sensor’s response time at a wide range of sensor operating temperatures. Furthermore, we will fine-tune the MEMS-based sensor architecture to significantly improve the durability and manufacturability of the sensor system. In addition, we will experimentally demonstrate the long-term durability by conducting a 100-hour performance test in tandem with a reformate desulfurization system. Our ultimate objective in Phase II is to develop universal sulfur sensors that can operate over a wide temperature range, from 400oC to 750oC, and respond to all organic sulfur compounds, including H2S.

* information listed above is at the time of submission.

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