Development of a new porous metal support based on nickel and its application for Pd based composite membranes. (2nd March 2015)

• Record Type: Journal Article
• Authors: Kim, Sung Su; Xu, Nong; Li, Anwu; Grace, John R.; Lim, C. Jim; Ryi, Shin-Kun
• Is Part Of: International journal of hydrogen energy. Volume 40:Number 8(2015)
• Page Start: 3520
• Page End: 3527
• Publication Date: 2015-03-02
• Subjects: Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2014.08.075
• Languages: English
• ISSNs: 0360-3199

Abstract

<abstract xml:lang="en" abstract-type="author" id="abs0010"> <title id="sectitle0010">Abstract</title> <sec> <p id="abspara0010">The integrity and performance of Pd-based membranes depends heavily on the properties of the substrate. This study presents the development of a new planar Ni-based porous support for Pd composite membranes. Ni powder was mixed with a 0.1 wt% of Ti and Cu, which have different melting temperatures, and was later uniaxially pressed in a metal mold to make substrate. The pressed substrates were heat treated at 1223 K in a hydrogen environment for 2 h. The pore size and its uniformity were determined using a mercury porosimeter. Adding 0.1 wt% of Ti sufficiently prevents sintering of metal and results in a good pore size distribution. With the aid of a pretreatment, i.e., polishing, etching and alumina coating, and electroless plating, a 9.3-μm-thick Pd membrane could be fabricated on the Ni–Ti substrate, exhibiting a H₂ permeation flux of ∼0.1445 mol m⁻² s⁻¹ with selectivity (H₂/He) of ∼1600 at 723 K and a pressure difference of 100 kPa.</p> </sec> </abstract>