Unlock instant, AI-driven research and patent intelligence for your innovation.

Zinc oxide hollow spheres synthesized by steam oxidation method and preparation method thereof

A technology of zinc oxide and oxidation method, which is applied in the direction of zinc oxide/zinc hydroxide, etc., can solve the problems of high experimental conditions and difficult control of zinc oxide hollow spheres, and achieve the effect of simplifying the production process and reducing costs

Inactive Publication Date: 2011-09-14
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems that the preparation of zinc oxide hollow spheres requires high experimental conditions and is not easy to control, and provides a method for synthesizing zinc oxide hollow spheres by steam oxidation and a preparation method without any additives, catalysts or various materials during the preparation process. Carrier gas simplifies the production process

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Zinc oxide hollow spheres synthesized by steam oxidation method and preparation method thereof
  • Zinc oxide hollow spheres synthesized by steam oxidation method and preparation method thereof
  • Zinc oxide hollow spheres synthesized by steam oxidation method and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1) Insert a 120cm-long quartz tube into a horizontally placed tube furnace, then raise the temperature of the tube furnace to 950°C and keep it warm for about 20 minutes to reach a stable temperature;

[0021] 2) Evenly spread a layer of Zn powder with a thickness of about 1 mm in the middle of the small quartz boat, and then push the quartz boat into the quartz tube furnace to a position about 5 cm away from the heating resistance wire, so that the Zn powder forms Zn vapor under heated conditions;

[0022] 3) After keeping warm for 3 minutes, pull the quartz boat at a steady and uniform speed. Under the action of natural airflow, the Zn vapor in the small quartz boat flows to the position of the quartz tube mouth, and Zn powder can be seen burning at the same time;

[0023] 4) After 15s, pull the quartz boat out of the quartz tube, you can see that the zinc oxide product in the tube changes from red to yellow instantly, then turns white again, and finally a white produc...

Embodiment 2

[0025] 1) Insert a 120cm-long quartz tube into the horizontally placed tube furnace, then raise the temperature of the tube furnace to 955°C and keep it warm for about 30 minutes to reach a stable temperature;

[0026] 2) Evenly spread a layer of Zn powder about 1 mm thick in the middle of the small quartz boat, and then push the quartz boat into the quartz tube furnace to a position about 6 cm away from the heating resistance wire, so that the Zn powder forms Zn vapor under heating conditions;

[0027] 3) After keeping warm for 1 minute, pull the quartz boat at a steady and uniform speed. Under the action of natural airflow, the Zn vapor in the small quartz boat flows to the position of the quartz tube mouth, and Zn powder can be seen burning at the same time;

[0028] 4) After 20s, pull the quartz boat out of the quartz tube, you can see that the zinc oxide product in the tube changes from red to yellow instantly, then turns white again, and finally a white product is obtaine...

Embodiment 3

[0030] 1) Insert a 120cm-long quartz tube into a horizontally placed tube furnace, then raise the temperature of the tube furnace to 960°C and keep it warm for about 40 minutes to reach a stable temperature;

[0031] 2) Evenly spread a layer of Zn powder about 1 mm thick in the middle of the small quartz boat, and then push the quartz boat into the quartz tube furnace to a position about 7 cm away from the heating resistance wire, so that the Zn powder forms Zn vapor under heating conditions;

[0032] 3) After keeping warm for 3 minutes, pull the quartz boat at a steady and uniform speed. Under the action of natural airflow, the Zn vapor in the small quartz boat flows to the position of the quartz tube mouth, and Zn powder can be seen burning at the same time;

[0033] 4) After 10s, pull the quartz boat out of the quartz tube, you can see that the zinc oxide product in the tube changes from red to yellow instantly, and then turns white again, and finally a white product is obta...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to zinc oxide hollow spheres synthesized by the steam oxidation method and a preparation method thereof, which belong to the field of preparation of advanced materials. The preparation method comprises the following steps: taking Zn powder as a raw material, firstly inserting a quartz tube into a tube furnace which is arranged horizontally well, then increasing the temperature of the tube furnace to 940-980 DEG C, and keeping the temperature till that the stable temperature is achieved; then pushing a small quartz carrier which is flat laid with a thin layer of Zn powderinto the position of a furnace chamber of the quartz tube, and leading the Zn powder to form Zn steam under the condition of being heated; keeping the temperature for 1-3min, then smoothly pulling the quartz carrier at constant speed, pulling the quartz carrier out of the quartz tube after 10-20s and obtaining the white zinc oxide hollow spheres. The preparation method adopts the steam oxidation method and strictly controls the technological conditions, thereby solving the problems of high requirements of the preparation of the zinc oxide hollow spheres on experimental conditions, difficult control and the like; furthermore, any catalyst or carrier gas is not added, thereby reducing the cost and simplifying the production technology.

Description

technical field [0001] The invention relates to the synthesis of zinc oxide hollow spheres by steam oxidation method and a preparation method, belonging to the field of advanced material preparation. Background technique [0002] Zinc oxide (ZnO) is an excellent semiconductor material with a wide direct band gap and can be widely used in gas sensors, rubber additives, transformers, optical devices, and the like. Its applications in different fields are all closely related to its morphology, and the structure, microscopic size, and morphology of zinc oxide have a decisive impact on its properties and applications. Therefore, the control of the structure and morphology of zinc oxide is widely used. Research. Due to the uniqueness and multi-functionality of the zinc oxide structure, it not only has excellent mechanical and electrical properties, but also has special electrical conductivity and microwave absorption, and has been widely used in high-tech fields. Therefore, the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C01G9/03
Inventor 曹茂盛王大伟袁杰张德庆
Owner BEIJING INSTITUTE OF TECHNOLOGYGY