Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7709022 | International Journal of Hydrogen Energy | 2017 | 10 Pages |
Abstract
The decomposition of hydrogen iodide in the thermochemical water splitting iodine-sulfur process at an intermediate temperature (400 °C) using a catalytic membrane reactor was reported here, for the first time. The performance of a catalytic membrane reactor based on a hexyltrimethoxysilane-derived silica membranes (H2 permeance of 9.4 Ã 10â7 mol Paâ1 mâ2 sâ1 and H2/N2 selectivity of over 80.0.) was evaluated at 400 °C by varying the HI flow rates of 2.6, 4.7, 6.9, 8.4, and 9.7 mL minâ1. The silica membranes were prepared by counter-diffusion chemical vapor deposition method on γ-alumina-coated α-alumina tubes. Hydrogen was successfully extracted from the membrane reactor using the silica membrane at 400 °C. A significant increase in HI conversion was achieved. The conversion achieved at an HI flow rate of 2.6 mL minâ1 was approximately 0.60, which was greater than the equilibrium conversion in HI decomposition (0.22).
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Odtsetseg Myagmarjav, Nobuyuki Tanaka, Mikihiro Nomura, Shinji Kubo,