Hamilton Sundstrand Corporation

United Technologies Corporation

James D MacLeod

Thomas Henry Vanderspurt

Susanne Marie Opalka

Sean C Emerson

Zidu Ma

Sarah Arsenault

Theresa Hugener-Campbell

Ying She

Zissis A Dardas

Craig R Walker

A method for regenerating at least one impurity-adsorbing sorbent bed includes passing impurity-containing fluid through the impurity-adsorbing bed. The impurity-adsorbing sorbent bed adsorbs an impurity in the impurity-containing fluid to produce a purified fluid. A portion of the purified fluid is sent back through the impurity-adsorbing sorbent bed that contains the adsorbed impurity. The impurity-adsorbing sorbent bed is exposed to microwave energy to desorb the impurity adsorbed on the impurity-adsorbing sorbent bed.

On-board fuel desulfurization unit

An H-permeable membrane system () comprises an electroless-deposited plating () of Pd or Pd alloy on a porous support (). The Pd plating comprises face-centered cubic crystals cumulatively having a morphology of hexagonal platelets. The permeability to Hof the membrane plating () on the porous support is significantly enhanced, being at least greater than about 1.3&#xd7;10mol&#xb7;m&#xb7;s&#xb7;Paat 350&#xb0; C., and even greater than about 3.4&#xd7;10mol&#xb7;m&#xb7;s&#xb7;Pa. The porous support () may be stainless steel (and include a thin ceramic interlayer () on which the Pd is plated. The method of providing the electroless-deposited plating includes preheating a Pd electroless plating solution to near a plating temperature substantially greater than room temperature, e.g. 60&#xb0; C., prior to plating.

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The athermal sorbent bed regeneration system of the present invention includes a main fuel supply, at least one sorbent bed, a source of microwave energy, and a secondary fuel supply. The main fuel supply has a first concentration of an impurity and the secondary fuel supply has a second concentration of the impurity that is less than the first concentration of the impurity. The sorbent bed adsorbs the impurity. The microwave energy source regenerates the sorbent bed for reuse.

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Vernon, CT, United States of America

James D MacLeod