High-activity catalyst for hydrogen peroxide decomposition

a hydrogen peroxide and catalyst technology, applied in the field of high-activity hydrogen peroxide decomposition, can solve the problems of increasing the activity, increasing the pressure drop, and contaminants within the hydrogen peroxide may also plate out onto the silver screen

Inactive Publication Date: 2001-03-06
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
View PDF14 Cites 33 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, increasing the number of screens also increases the activity, but also increases the pressure drop.
Contaminants within the hydrogen peroxide may also plate out onto the silver screens.
This reduces the active surface area, which in turn reduces the effective decomposition of the hydrogen peroxide.
Additionally, the cost of the materials and fabrication are high.
However, these patents do not address a low cost hydrogen peroxide catalyst applicable for use as an efficient propulsion system, providing low pressure drop and low weight.

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
  • High-activity catalyst for hydrogen peroxide decomposition
  • High-activity catalyst for hydrogen peroxide decomposition
  • High-activity catalyst for hydrogen peroxide decomposition

Examples

Experimental program
Comparison scheme
Effect test

example 1

1 molar solution of sodium pennanganate was prepared by dissolving 141.93 grams of NaMnO.sub.4 in 1 liter of deionized water. After dissolution, one mole of sodium hydroxide (40.00 grams) was added to the solution and allowed to dissolve to form the impregnation solution. 400, 600, 900, and 1100 pore per in.sup.2 monolithic catalyst substrates, comprised of synthetic cordierite, manufactured by Corning Incorporated of Corning N.Y., were sliced to proper thickness of one-half inch and cored to proper diameter of one inch. These substrates were dried overnight at 200.degree. C. The substrates were allowed to soak in the impregnation solution for one hour, were drained, blotted and then dried and calcined at 325.degree. C. overnight. The impregnation and calcination processes were repeated twice to form the finished catalyst which contained the sodium alkaline promoter in an amount to the active manganese in a molar ratio of two to one.

example 2

1 molar solution of cobalt acetate tetrahydrate was made by dissolving 249.08 grams of Co(C.sub.2 H.sub.3 O.sub.2).sub.2.cndot.4H.sub.2 O in 1 liter of distilled water. After dissolution, one mole of potassium hydroxide (56.11 grams) was added and dissolved to form the impregnation solution. Cored sections of alumina foam, used as the catalytic substrate, were dried overnight at 200.degree. C. The impregnation solution was poured over the substrates, and the entire mass was allowed to soak for one hour at ambient conditions. The substrates were drained, blotted, and then calcined at 250.degree. C. for two hours. The process was repeated once to form the finished catalyst which contained an equimolar ratio of cobalt and potassium, the alkaline promoter.

example 3

0.25 molar solution of potassium permanganate was made by dissolving 39.51 grams of KMnO.sub.4 in 1 liter of demineralized water, forming the impregnation solution. Cylindrical structures of cordierite monoliths of varying pore densities were formed by diamond core drilling, having a nominal diameter of one inch and a nominal length of three inches. After machining, the cylindrical structures were washed and dried overnight at 200.degree. C. The dried billets were soaked in the impregnation solution for two hours, drained, blotted, and then calcined for one hour at 350.degree. C. The impregnation and calcination steps were repeated three times to yield an active catalyst containing an equimolar ratio of manganese and potassium, the alkaline promoter.

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

PropertyMeasurementUnit
molar ratioaaaaaaaaaa
molar ratioaaaaaaaaaa
weight percentaaaaaaaaaa
Login to view more

Abstract

A high-activity hydrogen peroxide decomposition catalyst comprising an impregnated and calcined substrate with a catalyst mixture. The catalyst mixture comprises a hydrogen peroxide catalytically active compound containing a transition metal cation mixed with an alkaline promoter. A process for forming a high-activity hydrogen peroxide decomposition catalyst and a product of high-activity hydrogen peroxide decomposition are disclosed.

Description

MICROFICHE APPENDIXNot applicableBACKGROUND OF THE INVENTION1. Field of the InventionThe present invention relates to high-activity hydrogen peroxide decomposition. More particularly, the present invention uses an activated catalyst for high-activity hydrogen peroxide decomposition. Most particularly, the high-activity hydrogen peroxide decomposition is sufficiently rapid enough to provide thrust within rocket and / or other power systems.2. Brief Description of the Related ArtCatalysts are used in the decomposition of hydrogen peroxide (H.sub.2 O.sub.2) for monopropellant thrusters, liquid rocket engines, hybrid rocket systems and the like. Hydrogen peroxide decomposes into water vapor and oxygen. The oxygen product can react with conventional rocket fuel or grains to provide thrust. Within propulsion systems, hydrogen peroxide has been successfully used as an oxidizer for U.S. Navy torpedo systems, U.S.A.F. attitude control thruster"s on the X-15, and for reaction control thrusters ...

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(United States)
IPC IPC(8): B01J23/04B01J23/34B01J23/16B01J23/78B01J23/76B01J35/04B01J35/00C06D5/00C01B13/02C06D5/04B01J23/75B01J37/02B01J37/00
CPCB01J35/04B01J23/04B01J23/34B01J23/75B01J23/78B01J37/0201C01B13/0214C06D5/04
Inventor RUSEK, JOHN J.ANDERSON, NICOLE
Owner THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap