TH138083A - A method for producing a catalyst for the treatment of exhaust gases and vehicles that are using it - Google Patents

Abstract

DC60(03/06/13) Method for producing catalysts for exhaust gas treatment with (a) metal support preparation process. Oxide containing zirconium (b) the process of preparing a solution containing rhodium and (c) the process of bringing the metal oxide support containing zirconium from process (a) into the solution. Inside there is rhodium from process (b) and ammonium carbonate or ammonium hydrogen. Carbonate or ammonia solution used to adjust the pH value to be in the range of 3.07.5 down to which A rhodium-containing exhaust aftertreatment catalyst is mounted onto a metal oxide-containing support. Zirconium is mixed in highly dispersed microparticles. The picture used is picture 1. Method for producing catalysts for exhaust gas treatment using (a) metal support preparation process Oxide containing zirconium (b) the process of preparing a solution containing rhodium and (c) the process of bringing the metal oxide support containing zirconium from process (a) into the solution. Inside there is rhodium from process (b) and ammonium carbonate or ammonium hydrogen. Carbonate or ammonia solution is added to adjust the pH value to below 3.07.5, which results in a rhodium-containing exhaust gas treatment catalyst installed on a metal oxide support. Zirconium is mixed in highly dispersed microparticles. Selected picture: Picture 1

Claims (1)

: DC60 (03/06/56) catalyst manufacturing method for exhaust treatment with (a) metal support preparation process. Zirconium-containing oxides (b) preparation process with rhodium-containing solution and (c) process of introducing zirconium-containing metal oxide supports (a) to solution. Inside there is rhodium from process (b) and ammonium carbonate or ammonium hydrogen. Carbonate or ammonia solution used to adjust the pH to the range 3.0-7.5, resulting in a catalyst for rhodium-containing exhaust gas treatment is installed on the metal oxide support. Zirconium blends in the form of small particles with high dispersion. Fig. 1 Manufacturing method for catalyst for exhaust treatment with (a) metal support preparation process. Zirconium-containing oxides (b) the process of preparing the internal solution containing the rhodium and (c) the process of introducing the zirconium-containing metal oxide supports (a) to the solution. Inside there is rhodium from process (b) and ammonium carbonate or ammonium hydrogen. Carbonate or ammonia solution was lowered to adjust the pH to the range of 3.0-7.5, resulting in a catalyst for rhodium-containing exhaust gas treatment installed on the metal oxide support. Zirconium blends in the form of small particles with high dispersion. Figure selected for use Figure 1 Claims (Item one) which will appear on the advertisement page: edit 17/02/2016 1. Methods for producing catalysts for exhaust treatment containing: retort (a) of zirconium-containing metal oxide support; The procedure (IV) of the preparation of a solution in which the intrinsic rhodium is present; And step (C) of adding metal oxide support, and ammonium carbonate or Ammonium hydrogen carbonate or ammonia solution is added to solution to obtain a solution whose PH value is adjusted to a range of 3.0 or higher and /.5. Or lower; Where the step (C) includes: Substep (C-IA) of the tag combination: