Composite oxide load type catalyst and preparation process thereof
A supported catalyst, composite oxide technology, applied in catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, preparation of organic compounds, etc., can solve problems such as unreported
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment approach 1
[0021] a) Add 25 mL of tetraethyl orthosilicate to 50 mL of absolute ethanol at a temperature of 20°C, add 6 mL of deionized water and 12.5 mL of acetic acid in sequence, and stir for 1 hour for hydrolysis;
[0022] b) Add 3.3mL of titanium isopropoxide to 6.6mL of absolute ethanol at 20°C, then 1.7mL of acetic acid, stir and hydrolyze for 30 minutes, mix with pre-hydrolyzed silica sol and stir vigorously at 20°C 1 hour to make it form a transparent sol;
[0023] c) 2.2 g of purified CuCl was dissolved in 60 mL of ethanol solution, then added into the titanium silica sol, and stirred at room temperature to form a composite gel;
[0024] d) aging the gel at 20°C for 50-200 hours to form a xerogel;
[0025] e) The obtained xerogel was sintered in a muffle furnace at 550°C for 3 to 10 hours, and cooled naturally to room temperature to obtain about 9.7g of CuCl / TiO 2 -SiO 2 Composite metal oxide supported catalyst.
Embodiment approach 2
[0027] a) Add 6 mL of tetraethyl orthosilicate to 12 mL of absolute ethanol at a temperature of 20°C, add 1.5 mL of deionized water and 3 mL of acetic acid in sequence, and stir for 1 hour for hydrolysis;
[0028]b) Add 24mL of titanium isopropoxide to 48mL of absolute ethanol at 20°C, then 12mL of acetic acid, stir and hydrolyze for 30 minutes, mix with pre-hydrolyzed silica sol and stir vigorously at 20°C for 1 hour to dissolve to form a transparent sol;
[0029] c) 4.6g of purified CuCl 2 2H 2 O was dissolved in 100mL ethanol solution, then added into the titanium silica sol, and stirred at room temperature to form a composite gel;
[0030] d) aging the gel at 20°C for 50-200 hours to form a xerogel;
[0031] e) The obtained xerogel was sintered in a muffle furnace at 550°C for 3 to 10 hours, and cooled naturally to room temperature to obtain about 11.6g of CuCl 2 / TiO 2 -SiO 2 Composite metal oxide supported catalyst.
Embodiment approach 3
[0033] a) Add 20 mL of tetraethyl orthosilicate to 40 mL of absolute ethanol at a temperature of 20°C, add 5 mL of deionized water and 10 mL of acetic acid in sequence, and stir for 1 hour for hydrolysis;
[0034] b) Add 8.9mL of titanium isopropoxide to 18mL of absolute ethanol at 20°C, then 4.5mL of acetic acid, stir and hydrolyze for 30 minutes, mix with the pre-hydrolyzed silica sol and stir vigorously at 20°C for 1 hour to form a transparent sol;
[0035] c) 2.3g CuCl 2 2H 2 O and 2.3 g PdCl 2 Dissolve in 100mL ethanol solution, then add to titanium silica sol, stir at room temperature to form a composite gel;
[0036] d) aging the gel at 20°C for 50-200 hours to form a xerogel;
[0037] e) The obtained xerogel was sintered in a muffle furnace at 550° C. for 3 to 10 hours, and cooled naturally to room temperature to obtain about 11.9 g of
[0038] CuCl 2 -PdCl 2 / TiO 2 -SiO 2 Composite metal oxide supported catalyst.
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More