Self-supporting structures containing immobilized carbon particles and method for forming same
US4664683A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 1986 |
| Grant date | May 12, 1987 |
| Priority date | — |
| Expiry date | Jan 27, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J20/3042
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for immobilizing reactive Whetlerite carbon particles and forming a self-supporting structure of high compressive strength therefrom is described in which the self-supporting structure substantially eliminates the formation of carbon fines while retaining the adsorption characteristics of the carbon particles. The process for immobilizing the adsorbent carbon particles in the self-supporting structure comprises the steps of: PA1 (a) mixing in an environment having a relative humidity of less than about 35 percent, Whetlerite carbon particles, a major portion of which has particle sizes in the range of from about 200 to about 2,000 microns, with a powdered polymeric binding material, preferably a thermoplastic material having a solid-liquid transition stage, in an amount of about 5 to about 20 percent by weight, based on the weight of the total mixture, a major portion of the particles of the polymeric binding material having particle sizes in the range of about 8 to about 30 microns, to form a mixture of the carbon particles partially coated with the polymeric binding material; PA1 (b) placing the mixture in a container of a desired shape; and PA1 (c) applying a pressure …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.