Precious metal loaded three-dimensional mesoporous silico-aluminate catalyst and preparation method thereof
A three-dimensional mesoporous aluminosilicate and precious metal salt technology, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of poor catalyst pore structure, The post-treatment process is complicated and tedious, and the loading of active components is not uniform, so as to improve the flow diffusion performance, improve the flow diffusion and increase the catalytic performance.
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Embodiment 1
[0051] A preparation method of a three-dimensional mesoporous aluminosilicate catalyst supported by a noble metal, comprising the following steps:
[0052] 1) add 10ml of deionized water to n-butanol (20ml, 99.5%, relative density ρ=0.81), evenly mix and stand for stratification, take the supernatant to obtain a water-saturated butanol solution, for subsequent use;
[0053] 2) Take 0.2g of tetramethoxysilane (98%, relative density ρ=1.02) and 2g aluminum n-butoxide (97wt%, relative density ρ=0.967), put it at 25°C for 10min, use The magnetic stirrer was stirred for 10 min at a rotating speed of 100 r / min, and then left standstill for 10 min to obtain a viscous transparent liquid I, for subsequent use;
[0054] 3) 2ml of gained viscous transparent liquid I was uniformly added dropwise to 20mL into a water-saturated butanol solution (organic solvent), and it was found that a white precipitate was generated immediately, under the condition of 25 ° C, after standing for 10min, use...
Embodiment 2
[0060] A preparation method of a three-dimensional mesoporous aluminosilicate catalyst supported by a noble metal, comprising the following steps:
[0061] 1) Add 10ml of deionized water to n-butanol (20ml, 99.5%, relative density ρ=0.81), evenly mix and let stand for stratification, take the supernatant to prepare a water-saturated butanol solution for later use.
[0062] 2) Take 0.3g of tetramethoxysilane (98%, relative density ρ=1.02) and 2g aluminum n-butoxide (97wt%, relative density ρ=0.967), put it at 25°C for 10min, use The magnetic stirrer was stirred for 10min at a rotating speed of 100r / min, and then left standstill for 10min to obtain a viscous transparent liquid I for subsequent use.
[0063] 3) 3mL of viscous transparent liquid I was uniformly added dropwise to 20mL of water-saturated butanol solution, and it was found that a white precipitate was formed immediately. Under stirring for 10min, then stand for 10min to obtain a white precipitate I;
[0064] 4) Per...
Embodiment 3
[0069] A preparation method of a three-dimensional mesoporous aluminosilicate catalyst supported by a noble metal, comprising the following steps:
[0070] 1) Add 10ml of deionized water to n-butanol (20ml, 99.5%, relative density ρ=0.81), evenly mix and let stand for stratification, take the supernatant to prepare a water-saturated butanol solution for later use.
[0071] 2) Take 0.2g of tetramethoxysilane (98%, relative density ρ=1.02) and 2g aluminum n-butoxide (97wt%, relative density ρ=0.967), put it at 25°C for 10min, use The magnetic stirrer was stirred for 10 min at a rotating speed of 100 r / min, and then left standstill for 10 min to obtain a viscous transparent liquid I, for subsequent use;
[0072] 3) 2mL of viscous transparent liquid I was evenly added dropwise to 20mL of water-saturated butanol solution, and it was found that a white precipitate was formed immediately. Under stirring for 10min, then stand for 10min to obtain a white precipitate I;
[0073] 4) Pe...
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Abstract
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