Title: High permeance sulfur tolerant Pd/Cu alloy membranes

Abstract

A method of making a membrane permeable to hydrogen gas (H.sub.2.uparw.) is disclosed. The membrane is made by forming a palladium layer, depositing a layer of copper on the palladium layer, and galvanically displacing a portion of the copper with palladium. The membrane has improved resistance to poisoning by H.sub.2S compared to a palladium membrane. The membrane also has increased permeance of hydrogen gas compared to palladium-copper alloys. The membrane can be annealed at a lower temperature for a shorter amount of time.

Inventors:

Ma, Yi Hua; Pomerantz, Natalie

Issue Date:

2014-02-18

Research Org.:

Worcester Polytechnic Institute, Worcester, MA, USA

Sponsoring Org.:

USDOE

OSTI Identifier:

1124795

Patent Number(s):

8652239

Application Number:

13/099,688

Assignee:

Worcester Polytechnic Institute (Worcester, MA)

Patent Classifications (CPCs):

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

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C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS

C01B3/505 - {Membranes containing palladium}

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B01D2325/04 - Characteristic thickness

C - CHEMISTRY C23 - COATING METALLIC MATERIAL C23C - COATING METALLIC MATERIAL

C23C18/405 - {Formaldehyde}

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS

C01B2203/0405 - Purification by membrane separation

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B01D67/0069 - {by deposition from the liquid phase, e.g. electrochemical deposition

C - CHEMISTRY C23 - COATING METALLIC MATERIAL C23C - COATING METALLIC MATERIAL

C23C18/165 - {Multilayered product

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B01D69/105 - {Support pretreatment}
B01D2323/08 - Specific temperatures applied

C - CHEMISTRY C23 - COATING METALLIC MATERIAL C23C - COATING METALLIC MATERIAL

C23C18/1651 - {Two or more layers only obtained by electroless plating}
C23C18/54 - Contact plating, i.e. electroless electrochemical plating

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B01D71/022 - {Metals}
B01D2325/023 - Dense layer within the membrane
B01D69/12 - Composite membranes

C - CHEMISTRY C23 - COATING METALLIC MATERIAL C23C - COATING METALLIC MATERIAL

C23C18/1831 - {Use of metal, e.g. activation, sensitisation with noble metals}

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B01D67/0093 - {Chemical modification}

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DOE Contract Number:  

FC26-07NT43058; FG26-04NT42194

Resource Type:

Patent

Resource Relation:

Patent File Date: 2011 May 03

Country of Publication:

United States

Language:

English

Subject:

36 MATERIALS SCIENCE