Wall coating of a CuO/ZnO/Al"2O"3 methanol steam reforming catalyst for micro-channel reformers [An article from: Chemical Engineering Journal]

This digital document is a journal article from Chemical Engineering Journal, published by Elsevier in 2004. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
Capillaries of quartz and fused silica were coated with a commercial BASF CuO/ZnO/Al"2O"3 catalyst. The objective was to create micro channels with reactive coatings for steam reforming of methanol to produce H"2 for proton exchange membrane (PEM) fuel cells. A slurry of catalyst with a boehmite binder was filled in the capillary and then displaced by a stream of inert gas. This gas displacement method allowed us to generate coatings ranging from 1 to 25@mm in thickness by varying the slurry viscosity. The 25@mm coating thickness was deposited on a range of tube diameters, for example 4.1mm, 2mm, and 530@mm diameter. The coating was adherent and did not peel off during catalytic reaction tests which lasted up to 10 days. The activity of the coated catalyst was superior to that of the same catalyst in a packed bed.