Hydrothermal synthesis method for sodium niobate powder
A technology of hydrothermal synthesis and sodium niobate, which is applied in the field of hydrothermal synthesis of sodium niobate powder, can solve the problems of agglomeration between powder particles and grain growth of sodium, and achieve the goal of reducing energy consumption and environmental pollution Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0015] Niobium pentoxide (Nb 2 o 5 ) and sodium hydroxide (NaOH) put into the autoclave after weighing, the mol ratio of niobium pentoxide and sodium hydroxide is 0.2, according to the filling rate of 75%, add the deionized water of corresponding volume in the autoclave, adjust The amount of raw materials, so that the concentration of sodium hydroxide is 6mol / L, stir slowly with a glass rod to dissolve the sodium hydroxide; to 160 degrees Celsius, keep warm for 16 hours, and then cool with the furnace; take out and open the autoclave, pour the reactants into a beaker, use deionized water to filter and wash repeatedly until the washing liquid becomes neutral, and put the obtained powder into an oven. Bake at 50°C for 8 hours. figure 1 The XRD spectrum of the obtained sodium niobate powder is given.
Embodiment 2
[0017] Niobium pentoxide (Nb 2 o 5 ) and sodium hydroxide (NaOH) put into the autoclave after weighing, the mol ratio of niobium pentoxide and sodium hydroxide is 0.1, according to the filling rate of 70%, add the deionized water of corresponding volume in the autoclave, adjust The amount of raw materials is such that the concentration of sodium hydroxide is 6mol / L, and the sodium hydroxide is slowly stirred with a glass rod to dissolve the sodium hydroxide; to 180 degrees Celsius, keep warm for 20 hours, and then cool with the furnace; take out and open the autoclave, pour the reactants into a beaker, use deionized water to repeatedly filter and wash until the washing liquid becomes neutral, and put the obtained powder into an oven. Bake at 80°C for 6 hours. figure 2 The SEM pictures of the obtained sodium niobate powder are given.
Embodiment 3
[0019] Niobium pentoxide (Nb 2 o 5 ) and sodium hydroxide (NaOH) put into the autoclave after weighing, the mol ratio of niobium pentoxide and sodium hydroxide is 0.5, according to the filling rate of 75%, add the deionized water of corresponding volume in the autoclave, adjust The amount of raw materials is such that the concentration of sodium hydroxide is 4mol / L, and the sodium hydroxide is dissolved by stirring slowly with a glass rod; after sealing the autoclave, put it into a pit furnace or an oven, and raise the temperature at a rate of 1 degree Celsius per minute. to 200 degrees Celsius, keep warm for 12 hours, and then cool with the furnace; take out and open the autoclave, pour the reactants into a beaker, use deionized water to filter and wash repeatedly until the washing liquid becomes neutral, and put the obtained powder into an oven. Bake at 40°C for 10 hours. image 3 The SEM pictures of the obtained sodium niobate powder are given.
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com