Metal modified hydroxyapatite catalyst as well as preparation and application thereof
A technology of hydroxyapatite and nano-hydroxyapatite, which is applied in the field of metal-modified hydroxyapatite catalyst and its preparation and application, can solve the problems of amplification, unstable raw material prices, and difficulty in large-scale commercialization, and achieve Good stability, the reaction process is simple, controllable and easy to operate, and the effect of good hydrothermal stability
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0032] Will (NH 4 ) 2 HPO 4 Dissolve in deionized water to form a 0.04g / mL aqueous solution, denoted as A solution, Ca(NO 3 ) 3 4H 2 O was dissolved in deionized water to form 0.13g / mL deionized water, and PVPK30 was added (concentration: 10mg / mL), which was recorded as B solution. The pH of A and B solutions was adjusted to 9 with mass fraction of 28% ammonia respectively, and A solution was added dropwise to B solution through a convection pump at a rate of 1mL / min; the volume ratio of A and B solutions was 2: 1; Then the resulting precipitate was heated in an oil bath at 50°C for 10 minutes, filtered with suction, fully washed until neutral, dried at 120°C, and finally calcined in a muffle furnace at 400°C for 3 hours. The obtained sample is 20nm hydroxyapatite (marked as Nano-HAP-1).
[0033] Disperse the prepared HAP-1 in an aqueous solution (0.05g / mL), then add 0.1mol / L copper nitrate, perform ion exchange at 25°C for 2 hours, after ion exchange, filter, wash, and ...
Embodiment 2
[0036] Will (NH 4 ) 2 HPO 4 Dissolve in deionized water to form a 0.2g / mL aqueous solution, denoted as A solution, Ca(NO 3 ) 3 4H 2 O was dissolved in deionized water to form 0.33g / mL deionized water, and PVPK90 (concentration: 20mg / mL) was added, which was recorded as B solution. The pH of the A and B solutions was adjusted to 11 with mass fraction of 28% ammonia respectively, and the A solution was added dropwise to the B solution through an advection pump at a rate of 5 mL / min; the volume ratio of the A and B solutions was 1: 1; Then the resulting precipitate was heated in an oil bath at 70°C for 30 minutes, filtered with suction, fully washed until neutral, dried at 120°C, and finally calcined in a muffle furnace at 600°C for 6 hours. The obtained sample is about 50nm hydroxyapatite (marked as Nano-HAP-2).
[0037] Disperse the prepared HAP-1 in an aqueous solution (0.1g / mL), then add 0.5mol / L cobalt nitrate, conduct ion exchange at 65°C for 12 hours, after ion excha...
Embodiment 3
[0040] Will (NH4 ) 2 HPO 4 Dissolve in deionized water to form a 0.4g / mL aqueous solution, denoted as A solution, Ca(NO 3 ) 3 4H 2 O was dissolved in deionized water to form 0.65g / mL deionized water, and PVPK150 (concentration: 40mg / mL) was added, which was recorded as B solution. The pH of A and B solutions was adjusted to 11 with mass fraction of 28% ammonia respectively, and A solution was added dropwise to B solution through a convection pump at a rate of 10 mL / min; the volume ratio of A and B solutions was 1: 2; Then the resulting precipitate was heated in an oil bath at 90°C for 60 minutes, filtered with suction, washed until neutral, dried at 120°C, and finally calcined in a muffle furnace at 700°C for 12 hours. The obtained sample is about 100nm hydroxyapatite (marked as Nano-HAP-3).
[0041] Disperse the prepared HAP-1 in an aqueous solution (0.2g / mL), then add 0.9mol / L vanadium chloride, conduct ion exchange at 85°C, ion exchange for 24h, after ion exchange, fil...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More