JPH03105930U - - Google Patents
Info
- Publication number
- JPH03105930U JPH03105930U JP1252190U JP1252190U JPH03105930U JP H03105930 U JPH03105930 U JP H03105930U JP 1252190 U JP1252190 U JP 1252190U JP 1252190 U JP1252190 U JP 1252190U JP H03105930 U JPH03105930 U JP H03105930U
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- distribution
- surface roughness
- axial direction
- support layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003054 catalyst Substances 0.000 claims description 19
- 230000003746 surface roughness Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000000746 purification Methods 0.000 claims 2
- 238000004804 winding Methods 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
Landscapes
- Catalysts (AREA)
Description
第１図は、本考案の排ガス浄化用メタル触媒の
実施例１を示す斜視図である。第２図は、第１図
における要部を展開した状態を示す部分断面図で
ある。第３図は、実施例１におけるハニカム通路
表面の軸方向に異なる面粗さの分布状態を示す拡
大部分縦断面図である。第４図は、第３図におい
て触媒担持層が形成された状態を示す拡大部分縦
断面図である。第５図は、ハネカム通路の軸方向
の上流側（域）と下流側（域）とにおける有害成
分の量および排ガス温度との関係を示す図である
。第６図は、実施例２におけるハニカム通路表面
の軸方向に異なる面粗さの分布状態を示す拡大部
分縦断面図である。第７図は、６図における触媒
担持層の厚さの分布状態を示す拡大部分縦断面図
である。第８図は、実施例３におけるハニカム通
路表面の軸方向に異なる面粗さの分布状態を示す
拡大部分縦断面図である。第９図は、第８図にお
ける触媒担持層の厚さの分布状態を示す拡大部分
縦断面図である。第１０図は、比較例１における
ハニカム通路表面の軸方向の面粗さの分布状態を
示す拡大部分縦断面図である。第１１図は、第１
０図における触媒担持層の厚さの分布状態を示す
拡大縦断面図である。第１２図は、比較例２にお
けるハニカム通路表面の軸方向の面粗さの分布状
態を示す拡大部分縦断面図である。第１３図は、
第１２図における触媒担持層の厚さの分布状態を
示す拡大縦断側面図である。第１４図はハニカム
通路の軸方向の上流側より下流側における触媒金
属の担持量の変化を示す説明図である。
１ａ，１ｂ，１ｃ，１ｄ，１ｅ…触媒担体基材
、１０…平板、１１…波板、１２ａ，１２ｂ，１
２ｃ，１２ｄ，１２ｅ…ハニカム通路、１３ａ，
１３ｂ，１３ｃ，１３ｄ，１３ｅ…表面、２ａ，
２ｂ，２ｃ，２ｅ，２ｄ…触媒担持層、３…触媒
。
FIG. 1 is a perspective view showing Example 1 of the metal catalyst for purifying exhaust gas of the present invention. FIG. 2 is a partial cross-sectional view showing the essential parts of FIG. 1 in an expanded state. FIG. 3 is an enlarged partial vertical cross-sectional view showing the distribution of surface roughness that varies in the axial direction of the honeycomb passage surface in Example 1. FIG. 4 is an enlarged partial longitudinal sectional view showing a state in which a catalyst support layer is formed in FIG. 3. FIG. 5 is a diagram showing the relationship between the amount of harmful components and the exhaust gas temperature on the upstream side (area) and the downstream side (area) in the axial direction of the honeycomb passage. FIG. 6 is an enlarged partial vertical cross-sectional view showing the distribution of surface roughness that varies in the axial direction of the honeycomb passage surface in Example 2. FIG. 7 is an enlarged partial longitudinal sectional view showing the thickness distribution of the catalyst support layer in FIG. 6. FIG. FIG. 8 is an enlarged partial vertical cross-sectional view showing the distribution of surface roughness that varies in the axial direction of the honeycomb passage surface in Example 3. FIG. 9 is an enlarged partial longitudinal sectional view showing the thickness distribution of the catalyst support layer in FIG. 8. FIG. 10 is an enlarged partial longitudinal sectional view showing the distribution of surface roughness in the axial direction of the honeycomb passage surface in Comparative Example 1. Figure 11 shows the first
FIG. 2 is an enlarged vertical cross-sectional view showing the distribution of the thickness of the catalyst supporting layer in FIG. FIG. 12 is an enlarged partial longitudinal sectional view showing the distribution of surface roughness in the axial direction of the honeycomb passage surface in Comparative Example 2. Figure 13 shows
FIG. 13 is an enlarged longitudinal cross-sectional side view showing the distribution of the thickness of the catalyst support layer in FIG. 12; FIG. 14 is an explanatory diagram showing a change in the amount of catalyst metal supported from the upstream side to the downstream side in the axial direction of the honeycomb passage. 1a, 1b, 1c, 1d, 1e... Catalyst carrier base material, 10... Flat plate, 11... Corrugated plate, 12a, 12b, 1
2c, 12d, 12e...honeycomb passage, 13a,
13b, 13c, 13d, 13e...Surface, 2a,
2b, 2c, 2e, 2d...catalyst supporting layer, 3...catalyst.
Claims (1)
ハニカム通路をもつ触媒担体基材と、該触媒担体
基材の表面に形成された触媒担持層と、該触媒担
持層に担持された触媒とからなる排ガス浄化用メ
タル触媒において、 該触媒担体基材の該ハニカム通路の表面は、軸
方向に異なる面粗さの分布をもち、該触媒担持層
は、該面粗さの分布に応じた付着厚さの分布をも
つことを特徴とする排ガス浄化用メタル触媒。[Claims for Utility Model Registration] A catalyst carrier base material formed by stacking and winding a flat plate and a corrugated plate and having a large number of honeycomb passages; a catalyst support layer formed on the surface of the catalyst carrier base material; In a metal catalyst for exhaust gas purification consisting of a catalyst supported on a catalyst support layer, the surface of the honeycomb passage of the catalyst support base material has a surface roughness distribution that differs in the axial direction, and the catalyst support layer has a surface roughness distribution that differs in the axial direction. A metal catalyst for exhaust gas purification characterized by having a distribution of adhesion thickness that corresponds to the distribution of surface roughness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1252190U JPH03105930U (en) | 1990-02-10 | 1990-02-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1252190U JPH03105930U (en) | 1990-02-10 | 1990-02-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03105930U true JPH03105930U (en) | 1991-11-01 |
Family
ID=31515997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1252190U Pending JPH03105930U (en) | 1990-02-10 | 1990-02-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03105930U (en) |
-
1990
- 1990-02-10 JP JP1252190U patent/JPH03105930U/ja active Pending
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