کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9684710 1456210 2005 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A novel method for the preparation of thin dense Pd membrane on macroporous stainless steel tube filter
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
A novel method for the preparation of thin dense Pd membrane on macroporous stainless steel tube filter
چکیده انگلیسی
Thin Pd membranes were in situ deposited on macroporous stainless steel (MPSS) tubes using an improved electroless plating method consisting of material filling in the substrate pores, Pd plating on the filled substrate, and recovery and activation of the substrate pores. The Pd/MPSS composite membranes resulted from the filling materials of both aluminum hydroxide gel and Pd/aluminum hydroxide gel have been studied in detail and compared with each other. The hydrogen permeation mechanism through both membranes may be controlled by surface reactions, while the hydrogen permeation flux and activation energy for the membrane resulted from Pd/aluminum hydroxide gel are higher than these for the membrane resulted from aluminum hydroxide gel. In the case of the former membrane, which is almost pinhole free, the hydrogen permeation flux is as high as 0.302 mol/(m2 s) with a pressure difference of 100 kPa at 773 K. Good membrane stability is also proven by the unchanged membrane surface morphology, the steady hydrogen permeance, and the complete hydrogen selectivity. The deposition mechanism of the membrane has been proposed and interpreted in detail.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 260, Issues 1–2, 1 September 2005, Pages 10-18
نویسندگان
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