Simple and convenient preparation method of copper-manganese compound oxide monolithic catalyst
A monolithic catalyst, composite oxide technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of low adhesion stability of active substances, preparation of Complex process and other problems, to achieve the effect of high mechanical stability, simple preparation process and low price
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0021] (1) Preparation of slurry
[0022] Weigh 5 g pseudoboehmite powder, 2.5 g urea, 1.2476 g manganese nitrate solution (50% mass fraction), 0.8434 g Cu(NO 3 ) 2 ·3H 2 O, 1 ml CTAB and 1 ml Tween80 were placed in an 80 ml beaker, and 12.5 ml deionized water was added, placed on a magnetic stirrer, adjusted to pH 2 with nitric acid, and stirred vigorously for 1 h. After standing for 15 minutes, an aluminum sol slurry with high solid content, good fluidity, uniformity and stability, and containing active metal salts was formed.
[0023] (2) Coating of the carrier
[0024] Cordierite honeycomb ceramic carrier (composed of Mg 2 al 4 Si 5 o 18 , specifications: f 8′24 mm, square hole, hole density 400 cpsi, wall thickness 0.21 mm) after soaking in 50% acetic acid solution for 1 h and roasting at 600 °C for 2 h, immerse it in the above slurry and keep stirring Slowly take it out after 2 min. The excess liquid on the inner and outer walls of the channel was blown off by a...
Embodiment 2
[0028] (1) Preparation of slurry
[0029] Weigh 5 g pseudoboehmite, 3 g urea, 1.2482 g manganese nitrate solution (50% mass fraction), 0.8439 g Cu(NO 3 ) 2 ·3H 2 O, 1.5 ml CTAB and 2 ml Tween80 were placed in an 80 ml beaker, and 10 ml deionized water was added, placed on a magnetic stirrer, adjusted to pH 1.5 with nitric acid, and stirred vigorously for 1 h. After standing for 15 minutes, an aluminum sol slurry with high solid content, good fluidity, uniformity and stability, and containing active metal salts was formed.
[0030] (2) Coating of the carrier
[0031] The acid-etched pretreated cordierite ceramic carrier was immersed in the above slurry and kept stirring for 1 min, then slowly removed. The excess liquid on the inner and outer walls of the channel was blown off by air flow, turned over at room temperature for 1 h, left to stand for 18 h, then dried at 120 °C for 1 h, and then calcined at 500 °C for 3 h to obtain an alumina loading of 19.3 wt%. and a monolith...
Embodiment 3
[0035] (1) Preparation of slurry
[0036] Weigh 5 g pseudoboehmite, 2.5 g urea, 1.2475 g manganese nitrate solution (50% mass fraction), 0.8430 g Cu(NO 3 ) 2 ·3H 2O, 2 ml SDBS and 2 ml Tween20 were placed in an 80 ml beaker, and 10 ml deionized water was added, placed on a magnetic stirrer, adjusted to pH 1.5 with nitric acid, and stirred vigorously for 1 h. After standing for 15 minutes, an aluminum sol slurry with high solid content, good fluidity, uniformity and stability, and containing active metal salts was formed.
[0037] (2) Coating of the carrier
[0038] The acid-etched pretreated cordierite ceramic carrier was immersed in the above slurry and kept stirring for 2 min, then slowly removed. The excess liquid on the inner and outer walls of the channel was blown off by air flow, turned over at room temperature for 1 h, allowed to stand for 24 h, then dried at 150 °C for 2 h, and then calcined at 500 °C for 3 h to obtain an alumina loading of 19.9 wt%. and a monoli...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More