Process for separating components from gaseous streams
First Claim
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1. A process for selectively separating components from a gaseous stream, which components are those having a molecular diameter equal to or less than about 0.67 nm;
- which process comprises;
(a) introducing a gaseous stream containing;
(i) gaseous components having a molecular diameter equal to or less than about 0.67 nm, and (ii) gaseous components having a molecular diameter greater than about 0.67 nm into a bed of layered nanostructures characterized as having;
(i) a surface area from about 0.2 to 3,000 m2 /g by N2 adsorption at -196°
C., (ii) a crystallinity from about 5% to about 100%, and (iii) interstices from about 0.335 nm to about 0.67 nm between graphite platelets.
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Abstract
The present invention relates to the separation of one or more components from a multi-component gaseous stream. The component(s) being separated are relatively small molecular diameter gas components. They are separated by sorption techniques wherein the sorbent is a unique class of layered nanostructure materials, such as carbon nanofibers, characterized as having; (i) a surface area from about 0.2 to 3,000 m2 /g as determined by N2 adsorption at -196° C., (ii) a crystallinity from about 5% to about 100%, and (iii) interstices from about 0.335 nm to about 0.67 nm.
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19 Claims
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1. A process for selectively separating components from a gaseous stream, which components are those having a molecular diameter equal to or less than about 0.67 nm;
- which process comprises;
(a) introducing a gaseous stream containing;
(i) gaseous components having a molecular diameter equal to or less than about 0.67 nm, and (ii) gaseous components having a molecular diameter greater than about 0.67 nm into a bed of layered nanostructures characterized as having;
(i) a surface area from about 0.2 to 3,000 m2 /g by N2 adsorption at -196°
C., (ii) a crystallinity from about 5% to about 100%, and (iii) interstices from about 0.335 nm to about 0.67 nm between graphite platelets. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- which process comprises;
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12. A process for selectively separating components from a gaseous stream, which components are those having a molecular diameter equal to or less than about 0.67 nm;
- which process comprises;
(a) introducing a gaseous stream containing;
(i) gaseous components having a molecular diameter equal to or less than about 0.67 nm, and (ii) gaseous components having a molecular diameter greater than about 0.67 nm into a bed of carbon nanofibers characterized as having;
(i) a surface area from about 0.2 to 3,000 m2 /g by N2 adsorption at -196°
C., (ii) a crystallinity from about 5% to about 100%, and (iii) interstices from about 0.335 nm to about 0.67 nm between graphite platelets. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
- which process comprises;
Specification