I D
× COMMENTARYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More
Chemical Engineering MagazineChementator Briefs
‘Green’ steelmaking Seamlessly following the successful completion of the GrInHy…
BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILEENVIRONMENTAL MANAGEREQUIPMENT & SERVICESFOCUS
Focus on Analyzers
A proportional level-output detector for pilot plants The Dynatrol CL-10GP…
NEW PRODUCTS + Show More

Comment

Iron nanocatalysts boost ammonia production

By Scott Jenkins |

Nanoscale iron catalysts, designed for industrial chemical applications, have been validated in commercial ammonia-production reactors in China. According to manufacturer QuantumSphere, Inc. (QSI; Santa Ana, Calif.; www.qsinano.com), incorporation of the nanocatalysts resulted in a 10–15% increase in ammonia production rate compared to standard ammonia catalysts. Iron nanocatalysts produced from QSI’s manufacturing process (diagram) are highly uniform in size and have chemically active surfaces that allow reactions to occur at lower temperatures and pressures and at a higher rate. To manufacture the nanocatalysts, QSI developed an automated gas-phase condensation process (Chem. Eng., September 2004, p. 15) in which electric heating elements are used to melt and then vaporize iron in a vacuum chamber. A laminar flow of low-temperature helium condenses the metal vapor into nanoscale droplets, which then solidify into uniform spherical nanocatalysts. “By carefully controlling the vacuum level, metal flux, quench-gas flow and other process parameters, we are able to produce nanocatalysts with tailored particle sizes, tight size distributions and high surface energies,” explains Kevin Maloney, QSI’s CEO. In a secondary operation,…
Related Content
A Bright Future for Quantum Dots
The novel performance characteristics and tunability of quantum dots make them a promising nanomaterial in numerous emerging applications Quantum dots…
CO2-to-methanol
Researchers from Penn State University (State College, Pa.; www.psu.edu) and Dalian University of Technology (Dalian, China; www.dlut.edu.cn) have improved the…

Mettler Toledo

Protect Your Turbines from Silica with a Low Maintenance Analyzer

Silica in boiler feedwater can lead to unplanned shutdowns and extra maintenance. A major Spanish fertilizer producer has switched to a METTLER TOLEDO silica analyzer. Discover the benefits of this change.

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
3 Reasons to Automate Sensor Cleaning
Protect Your Turbines from Silica with a Low Maintenance Analyzer
Your Off-line pH Measurements Might Be Misleading and Costing You a Lot of Money
Reduce Explosion Risk in 2 Seconds with In Situ Oxygen Analysis
Tunable Diode Laser Spectroscopy in Critical Applications

View More

Live chat by BoldChat