Preparation method of Au-P/SiO2 catalyst

[0019] A kind of Au-P / SiO 2 The preparation method of the catalyst comprises the following steps: dissolving 15 parts of Tween 80 in a mixed solution consisting of 70 parts of distilled water and 30 parts of 1-propanol, adding 25 parts of tetraethyl orthosilicate, and leaving the mixture overnight to form a colorless and transparent solution, and then add 11 parts of sodium fluoride with a concentration of 0.20mol / L, react at 250rpm, 25°C for 52h, centrifuge, dry at 70°C, bake at 185°C for 7.5h, and then bake at 560°C for 7.5h to obtain mesoporous Silica: Add the silica prepared above into the reaction bottle, ultrasonically disperse it evenly in 75 parts of distilled water, and then add 7 parts of HAuCl with a concentration of 0.08mol / L 4 solution, add 35 parts of NaH with stirring 2 PO 2 , and adjust the pH to 9.5 with ammonia water, react at 70°C for 2.5h, open the glass stopper of the Erlenmeyer flask to volatilize the ammonia water, continue the reaction for 6h, afte

[0021] A kind of Au-P / SiO 2 The preparation method of the catalyst comprises the following steps: dissolving 10 parts of Tween 80 in a mixed solution composed of 65 parts of distilled water and 25 parts of 1-propanol, adding 20 parts of tetraethyl orthosilicate, and leaving the mixture overnight to form a colorless and transparent solution, then add 7 parts of sodium fluoride with a concentration of 0.20mol / L, react at 250rpm and 24°C for 51h, centrifuge, dry at 65°C, bake at 180°C for 7h, and then bake at 550°C for 7h to obtain mesoporous dioxide Silicon; add the silicon dioxide prepared above in the reaction bottle, ultrasonically disperse it evenly in 70 parts of distilled water, and then add 5 parts of HAuCl with a concentration of 0.08mol / L 4 solution, add 30 parts of NaH with stirring 2 PO 2 , and adjust the pH to 9.4 with ammonia water, react at 65°C for 2h, open the glass stopper of the Erlenmeyer flask to volatilize the ammonia water, continue the reaction for 5.

[0023] A kind of Au-P / SiO 2 The preparation method of the catalyst comprises the following steps: dissolving 20 parts of Tween 80 in a mixed solution consisting of 75 parts of distilled water and 35 parts of 1-propanol, adding 30 parts of tetraethyl orthosilicate, and leaving the mixture overnight to form a colorless and transparent solution, then add 15 parts of sodium fluoride with a concentration of 0.20mol / L, react at 250rpm and 26°C for 53h, centrifuge, dry at 75°C, bake at 190°C for 8h, and then bake at 570°C for 8h to obtain mesoporous dioxide Silicon; add the silicon dioxide prepared above in the reaction bottle, ultrasonically disperse it evenly in 80 parts of distilled water, and then add 9 parts of HAuCl with a concentration of 0.08mol / L 4 solution, add 40 parts of NaH with stirring 2 PO 2 , and adjust the pH to 9.6 with ammonia water, react at 75°C for 3h, open the glass stopper of the Erlenmeyer flask to volatilize the ammonia water, continue to react for 6.5