Process for preparing noble-metal catalyst by adopting formed foil as carrier

Abstract

The invention discloses a process for preparing a noble-metal catalyst by adopting a formed foil as a carrier. The process comprises the following steps of: (S1) preparing nitrate, wherein the components of the nitrate are prepared according to the components of the noble-metal catalyst generated finally through firing the nitrate and the noble-metal catalyst comprises the following substances in parts by weight: 2-20 parts of CuO, 2-20 parts of ZnO, 0.1-5 parts of ZrO, 40-95 parts of Al2O3, 0-5 parts of CeO2, 0-5 parts of La2O3 and 0-5 parts of noble metal which is one or more of Pb, Pt, Ir, Rh and Ru; (S2) preparing the nitrate into a solution; (S3) dipping the formed foil into the solution prepared in the S2; (S4) drying dipped and aired formed foil; (S5) firing a dried semi-finished product; and (S6) cooling to room temperature. The process disclosed by the invention has the advantages that the surface area of the catalyst can be enlarged and the hydrogen making efficiency and the conversion rate can be improved.

Description

Technical field [0001] The invention belongs to the technical field of catalyst preparation, and relates to a catalyst preparation process, in particular to a process for preparing a precious metal catalyst using a formed foil as a carrier. Background technique [0002] In recent years, with the development of proton exchange membrane fuel cells, especially their applications in automobiles and distributed power generation, there is an urgent need for small, efficient, efficient, and decentralized mobile hydrogen production systems to supply raw hydrogen. As a result, various hydrogen production systems have appeared, as well as various hydrogen production methods. [0003] The existing copper-based catalysts for the production of hydrogen from methanol steam reforming are mainly shaped particulate catalysts. The maximum operating liquid space velocity is less than 2.0h -1 , Using formed foil as a carrier to increase the specific surface of the catalyst and increase the liquid spac...

AI Technical Summary

Problems solved by technology

[0006] All methanol hydrogen production catalysts currently on the market, whether they are copper catalysts or noble metal catalysts and other catalysts, have their own activity temperature, either at 200-300 ° C, or at 350-450 ° C, or at 400 ° C or above, so the temperature distribution is uneven When the catalysts on the market are applied in the system, the catalytic activity will be low and the catalyst efficiency will be low.

That is, the catalysts on the market will have limitations in the application of non-uniform temperature systems

Images