Fuel additive and method of preparing the same
AssigneeHamilton Sundstrand Corporation
InventorsSusanne M. Opalka, Haralambos Cordatos
Life of this patent
Estimating the term…
Abstract
Disclosed is a fuel additive which may remove varnish precursor species in a jet fuel. In particular, the fuel additive may be a multi-functional adsorbent which includes a 2-dimensional or 3-dimensional interconnected mesoporous or mixed micro-/mesoporous framework and a plurality of internal cavities formed in the mesoporous or mixed micro-/mesoporous framework and the internal cavities include charged sites to accommodate fuel contaminants for varnish formation, such as metal ions and heteroatomic contaminants. In addition, methods of preparing the multi-functional adsorbent and methods for removing varnish precursor species with the fuel additive are provided.
Claims13
A multi-functional adsorbent for jet fuel, comprising:
- a 2-dimensional or 3-dimensional interconnected mesoporous or mixed micro-/mesoporous framework;
- and
- a plurality of internal cavities formed in the mesoporous or mixed micro-/mesoporous framework,
- wherein the size of each internal cavity formed in the mesoporous or mixed micro-/mesoporous framework is in a range from about 0.3 nm to about 4 nm;
- wherein the internal cavities include positively charged sites, negatively charged sites or combinations thereof;
- wherein the mesoporous or mixed micro-/mesoporous framework includes a polynuclear cluster, wherein the polynuclear cluster contains one or more positively charged or negatively charged sites;
- and
- herein the polynuclear cluster is an Al13 cluster, {[Al13O4(OH)24(H2O)12]7+.nCl−}(7-n)+, a polyoxometalate {[X+nM12O40](8-n)−.mH+}(8-n-m)− or combinations thereof,
- wherein X is P5+, Si4+ or B3+ and M is a transition metal atom from groups V-VI.
Dependencies are inferred from the claim text.