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

Process for preparing solid potassium ferrate (VI)

A solid-state, potassium-acid technology, applied in chemical instruments and methods, iron compounds, sodium/potassium compounds, etc., can solve the problems of repeated and lengthy process, unfavorable industrialization, environmental pollution, etc., to simplify the process, reduce production costs, Operational safety effect

Inactive Publication Date: 2007-06-13
ZHENGZHOU UNIV
View PDF3 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 provide a pollution-free, highly stable, high-yield solid-state potassium ferrate (VI) preparation method to overcome the use of organic solvents in the existing preparation of solid-state potassium ferrate methods, pollute the environment, and the process is repeatedly tedious , high cost and not conducive to industrialization and other issues

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] a. Take 100ml of NaClO solution, add 30g NaOH to make sodium hypochlorite high alkalinity solution, add 7.5g polyferric sulfate and 2.5g sodium silicate, keep constant temperature at 50°C, stir, and react for 90min to obtain a sodium ferrate solution with a concentration of 0.17 mol / L.

[0027] b. Under ice-cold conditions, the sodium ferric (VI) sodium solution is added with a saturated amount of KOH solid, placed, recrystallized, and centrifuged to obtain potassium ferric (VI) acid semi-solid.

[0028] c. Take a certain amount of activated clay, diatomite and bentonite respectively, and dry them at a high temperature of 800°C after alkalization treatment. Take different types of clay and other components to form water absorbent 1 # ,2 # and 3 # , the weight ratio of each component is:

[0029] 1 # , activated clay: sodium sulfate: calcium chloride: sodium silicate = 5:2:2:1

[0030] 2 # , bentonite: sodium sulfate; calcium chloride: sodium silicate = 5:2:2:1

...

Embodiment 2

[0035] The preparation method is the same as in Example 1. The difference is that in step c, take 300g3 # The water-absorbing agent and 100 g of potassium ferric (VI) acid semi-solid are mixed uniformly to obtain a purple-black dry powder, which is compressed into a tablet by a tablet machine to obtain a solid composite potassium ferric (VI) acid. Long-term storage in a dry place will not fail.

Embodiment 3-5

[0037] The preparation method is the same as in Example 1 or Example 2, and in step a, other process conditions are unchanged, only the solid polymerized ferric sulfate feeding amount is changed, and the concentration that obtains high iron (VI) sodium solution is shown in Table 1.

[0038] Table 1

[0039] Polyferric sulfate feeding amount

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 preparation process of solid potassium ferrate (IV) is one improved process on the basis of sodium hypochlorite oxidizing process, has optimized system with polyferric sulfate as three-valent iron source matter, and water absorbent and extruding drying to replace traditional repeated organic solvent washing and dewatering drying. The present invention has simple technological process, improved operation condition, environment friendship, low production cost and raised potassium ferrate (IV) yield. The prepared potassium ferrate (IV) has stable performance, convenient application and low cost, and is suitable for industrial application.

Description

Technical field [0001] The invention belongs to the technical field of preparation of iron compounds, and in particular relates to a preparation method of solid potassium ferrate. Background technique: [0002] Ferric (VI) acid salt is an oxo acid salt of +6-valent iron, which has a strong oxidizing property. This feature makes it extremely useful. High iron (VI) acid salts can be used as cathode materials for the manufacture of high-performance, pollution-free "green" batteries; as environmentally friendly agents for sterilization, algae removal, decolorization, deodorization, water purification, and radioactive pollution scavenging, etc.; can also be used as a highly selective oxidant for organic synthesis. These are attracting widespread attention, forming a research and development hotspot. [0003] The research on high-speed iron (VI) salts has been carried out abroad in the 1950s, but it started relatively late in China. In the 1990s, reports on high-speed iron (VI)...

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): C01G49/00C01D13/00
Inventor 贾汉东
Owner ZHENGZHOU UNIV