1. A process for increasing the proportion of at least one light paraffin in a mixture comprising carbon dioxide and said at least one light paraffin, wherein said process comprises passing said mixture over an adsorbent, wherein said adsorbent comprises an as-prepared andor modified ETS-10 zeolite, said adsorbent selectively adsorbs carbon dioxide from said mixture, and said at least one paraffin comprises methane, ethane or a mixture thereof.
2. The process of claim 1, wherein said at least one light paraffin comprises more than 50 weight percent of ethane.
3. The process of claim 1, wherein said at least one light paraffin comprises more than 50 weight percent of methane.
4. The process of claim 1, 2, or 3, wherein said modified ETS-10 zeolite comprises an as-prepared Na-ETS-10 zeolite which has been modified by cation exchange with one or more than one mono-, di- or tri-valent metal cation, a proton or mixtures thereof.
5. The process according to claim 4 wherein said process is a pressure swing adsorption process.
6. The process according to claim 1, 2, or 3, wherein said process is a pressure swing adsorption process.
7. A pressure swing adsorption process for increasing the proportion of at least one light paraffin in a gaseous mixture comprising carbon dioxide and said at least one light paraffin, wherein said process comprises:
i) passing said mixture through at least one adsorption bed containing an adsorbent comprising an as-prepared andor modified ETS-10 zeolite, at a pressure at which said adsorbent selectively adsorbs carbon dioxide from said gaseous mixture to provide a stream enriched in said at least one light paraffin;
ii) reducing the pressure in said at least one adsorption bed to a pressure at which said adsorbent releases adsorbed carbon dioxide to provide a stream enriched in carbon dioxide; and
wherein said at least one light paraffin comprises methane, ethane or a mixture thereof.
8. A process comprising:
i) passing a mixture comprising carbon dioxide and ethane through at least one adsorbent bed containing an adsorbent comprising an as-prepared andor modified ETS-10 zeolite, wherein said as-prepared andor modified ETS-10 zeolite selectively adsorbs carbon dioxide from said mixture to provide a product stream enriched in said ethane; and
ii) cracking said ethane in said product stream in a hydrocarbons cracking unit.
9. A process for increasing the proportion of at least one light paraffin in a mixture comprising carbon dioxide and said at least one light paraffin, wherein said process comprises:
i) passing said mixture over an adsorbent, wherein said adsorbent comprises an as-prepared andor modified ETS-10 zeolite, and wherein said adsorbent selectively adsorbs carbon dioxide from said mixture; and
ii) passing said mixture through an amine based liquid extraction unit, wherein said extraction unit selectively extracts carbon dioxide from said mixture;
and provided that said at least one light paraffin comprises more than 50 weight percent of ethane.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An additive for an electrolyte solution comprising a lithium salt having an oxalato complex as an anion and a compound represented by following Chemical Formula 1,
wherein, a represents C or Si, b represents H or F, and n represents an integer of 1 to 5.
2. The additive for an electrolyte solution of claim 1, wherein the lithium salt is at least one selected from the group consisting of lithium difluoro(oxalato)borate (LiODFB), lithium tetrafluoro(oxalato) phosphate (LiTFOP) and lithium bis(oxalato)borate (LiBOB).
3. The additive for an electrolyte solution of claim 1, wherein the lithium salt is included in an amount of 0.2 to 2% by weight based on a total amount of the electrolyte solution.
4. The additive for an electrolyte solution of claim 1, wherein the compound represented by Chemical Formula 1 is at least one selected from the group consisting of tris(trimethylsilyl)phosphate (TMSP) and tris(2,2,2-trifluoroethyl)phosphate (TFEP).
5. The additive for an electrolyte solution of claim 1, wherein the compound represented by Chemical Formula 1 is included in an amount of 0.01 to 2% by weight based on a total amount of the electrolyte solution.
6. The additive for an electrolyte solution of claim 1, wherein the compound represented by Chemical Formula 1 is included in an amount of 0.01 to 1% by weight based on a total amount of the electrolyte solution.
7. A non-aqueous electrolyte solution comprising:
an additive including a lithium salt having an oxalato complex as an anion and a compound represented by following Chemical Formula 1,
wherein, a represents C or Si, b represents H or F, and n represents an integer of 1 to 5;
a non-aqueous organic solvent; and
a lithium salt.
8. The non-aqueous electrolyte solution of claim 7, wherein the lithium salt is at least one selected from the group consisting of LiPF6, LiBF4, LiSbF6, LiAsF6, LiClO4, LiN(C2F5SO2)2. LiN(CF3SO2)2, CF3SO3Li, LiC(CF3SO2)3 and LiC4BO8.
9. The non-aqueous electrolyte solution of claim 7, further comprising at least one additive selected from the group consisting of vinylene carbonate, vinylene ethylene carbonate, ethylene sulfate and 1,3-propane sultone.
10. A lithium secondary battery comprising:
a cathode including a cathode active material;
an anode including an anode active material;
a separator interposed between the cathode and the anode; and
a non-aqueous electrolyte solution of claim 7,
the cathode active material being a manganese spinel active material, a lithium metal oxide or a mixture thereof.
11. The lithium secondary battery of claim 10, wherein the lithium metal oxide is at least one selected from the group consisting of a lithium-manganese oxide, a lithium-nickel-manganese oxide, a lithium-manganese-cobalt oxide and a lithium-nickel-manganese-cobalt oxide.