An NMR Sensor for Onboard Ship Detection of Catalytic Fines in Marine Fuel Oils.

Analytical chemistry

PubMedID: 24988044

Sørensen MK, Vinding MS, Bakharev ON, Nesgaard T, Jensen O, Nielsen NC. An NMR Sensor for Onboard Ship Detection of Catalytic Fines in Marine Fuel Oils. Anal Chem. 2014;.
A mobile, low-field nuclear magnetic resonance (NMR) sensor for onboard, inline detection of catalytic fines in fuel oil in the shipping industry is presented as an alternative to onshore laboratory measurements. Catalytic fines (called cat fines) are aluminosilicate zeolite catalysts utilized in the oil cracking process at refineries. When present in fuel oil, cat fines cause abrasive wear of engine parts and may ultimately lead to engine breakdown with large economical consequences, thereby motivating methods for inline measurements. Here we report on a robust, mobile, and low-cost 27Al NMR sensor for continuous on-line measurement of the level of catalytic fines in fuel oil onboard ships. The sensor enables accurate measurements of aluminum (catalytic fines) in ppm concentrations in good agreement with commercial laboratory reference measurements.