EP2285484A1 - Procede de neutralisation d'une zeolithe cationique - Google Patents
Procede de neutralisation d'une zeolithe cationiqueInfo
- Publication number
- EP2285484A1 EP2285484A1 EP09765986A EP09765986A EP2285484A1 EP 2285484 A1 EP2285484 A1 EP 2285484A1 EP 09765986 A EP09765986 A EP 09765986A EP 09765986 A EP09765986 A EP 09765986A EP 2285484 A1 EP2285484 A1 EP 2285484A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- organic solvent
- zeolite
- inert gas
- anhydrous organic
- separation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000010457 zeolite Substances 0.000 title claims abstract description 43
- 229910021536 Zeolite Inorganic materials 0.000 title claims abstract description 33
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000006386 neutralization reaction Methods 0.000 title claims abstract description 14
- 125000002091 cationic group Chemical group 0.000 title description 7
- 150000001768 cations Chemical class 0.000 claims abstract description 19
- 239000007787 solid Substances 0.000 claims abstract description 18
- 239000003960 organic solvent Substances 0.000 claims abstract description 15
- 239000011261 inert gas Substances 0.000 claims abstract description 14
- 238000000926 separation method Methods 0.000 claims abstract description 13
- 230000005587 bubbling Effects 0.000 claims abstract description 9
- 150000001447 alkali salts Chemical class 0.000 claims abstract description 8
- 238000007872 degassing Methods 0.000 claims abstract description 7
- 238000001914 filtration Methods 0.000 claims abstract description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000001354 calcination Methods 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 claims abstract description 6
- 239000001301 oxygen Substances 0.000 claims abstract description 6
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 6
- 239000000725 suspension Substances 0.000 claims abstract description 6
- 238000000746 purification Methods 0.000 claims abstract description 5
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 4
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 4
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- 238000005406 washing Methods 0.000 claims description 8
- 230000003472 neutralizing effect Effects 0.000 claims description 5
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical group CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 claims description 4
- 150000001336 alkenes Chemical class 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical class S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 2
- 239000003350 kerosene Substances 0.000 claims description 2
- -1 lanthanide cations Chemical class 0.000 claims description 2
- 229910052747 lanthanoid Inorganic materials 0.000 claims description 2
- 239000003345 natural gas Substances 0.000 claims description 2
- 238000006384 oligomerization reaction Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000006477 desulfuration reaction Methods 0.000 claims 1
- 230000023556 desulfurization Effects 0.000 claims 1
- 238000004090 dissolution Methods 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 22
- CRSBERNSMYQZNG-UHFFFAOYSA-N 1-dodecene Chemical compound CCCCCCCCCCC=C CRSBERNSMYQZNG-UHFFFAOYSA-N 0.000 description 16
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 12
- 239000000243 solution Substances 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 11
- 229940069096 dodecene Drugs 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 229910052786 argon Inorganic materials 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000003637 basic solution Substances 0.000 description 4
- 239000012736 aqueous medium Substances 0.000 description 3
- 238000003760 magnetic stirring Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 230000001476 alcoholic effect Effects 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- 238000006317 isomerization reaction Methods 0.000 description 2
- 239000002609 medium Substances 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- ADOQBZAVKYCFOI-HWKANZROSA-N (E)-2-dodecene Chemical compound CCCCCCCCC\C=C\C ADOQBZAVKYCFOI-HWKANZROSA-N 0.000 description 1
- WLTSXAIICPDFKI-FNORWQNLSA-N (E)-3-dodecene Chemical compound CCCCCCCC\C=C\CC WLTSXAIICPDFKI-FNORWQNLSA-N 0.000 description 1
- PHCKFVVLVZFFLU-VQHVLOKHSA-N (e)-dodec-4-ene Chemical compound CCCCCCC\C=C\CCC PHCKFVVLVZFFLU-VQHVLOKHSA-N 0.000 description 1
- ZOKYTRIEIDWYSG-PKNBQFBNSA-N (e)-dodec-5-ene Chemical compound CCCCCC\C=C\CCCC ZOKYTRIEIDWYSG-PKNBQFBNSA-N 0.000 description 1
- 239000007848 Bronsted acid Substances 0.000 description 1
- 206010063493 Premature ageing Diseases 0.000 description 1
- 208000032038 Premature aging Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- DZGHBGLILAEHOR-UHFFFAOYSA-N dodec-6-ene Chemical compound CCCCCC=CCCCCC DZGHBGLILAEHOR-UHFFFAOYSA-N 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 159000000011 group IA salts Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000013335 mesoporous material Substances 0.000 description 1
- 239000012229 microporous material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
- B01J20/18—Synthetic zeolitic molecular sieves
- B01J20/186—Chemical treatments in view of modifying the properties of the sieve, e.g. increasing the stability or the activity, also decreasing the activity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B39/00—Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
- C01B39/02—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof
- C01B39/026—After-treatment
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/12—Purification; Separation; Use of additives by adsorption, i.e. purification or separation of hydrocarbons with the aid of solids, e.g. with ion-exchangers
- C07C7/13—Purification; Separation; Use of additives by adsorption, i.e. purification or separation of hydrocarbons with the aid of solids, e.g. with ion-exchangers by molecular-sieve technique
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G25/00—Refining of hydrocarbon oils in the absence of hydrogen, with solid sorbents
- C10G25/02—Refining of hydrocarbon oils in the absence of hydrogen, with solid sorbents with ion-exchange material
- C10G25/03—Refining of hydrocarbon oils in the absence of hydrogen, with solid sorbents with ion-exchange material with crystalline alumino-silicates, e.g. molecular sieves
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G25/00—Refining of hydrocarbon oils in the absence of hydrogen, with solid sorbents
- C10G25/02—Refining of hydrocarbon oils in the absence of hydrogen, with solid sorbents with ion-exchange material
- C10G25/03—Refining of hydrocarbon oils in the absence of hydrogen, with solid sorbents with ion-exchange material with crystalline alumino-silicates, e.g. molecular sieves
- C10G25/05—Removal of non-hydrocarbon compounds, e.g. sulfur compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2229/00—Aspects of molecular sieve catalysts not covered by B01J29/00
- B01J2229/30—After treatment, characterised by the means used
- B01J2229/38—Base treatment
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/20—Characteristics of the feedstock or the products
- C10G2300/201—Impurities
- C10G2300/202—Heteroatoms content, i.e. S, N, O, P
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/40—Characteristics of the process deviating from typical ways of processing
- C10G2300/44—Solvents
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
- C10G2400/08—Jet fuel
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
- C10G2400/20—C2-C4 olefins
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
- C10G2400/22—Higher olefins
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
- C10G2400/30—Aromatics
Definitions
- cationic zeolites as adsorbents. Their principle is based on a selectivity of shape or size, or on a particular affinity of one of the constituents of the charge for the cations. Insofar as the process does not involve any chemical reaction, these are to be avoided. Any conversion of feedstock compounds leads to a drop in yield and can also be at the origin of the formation of coke precursors, thus causing premature aging of the adsorbent. These undesirable phenomena are all the more frequent as the zeolite has active surface sites which are most often acidic sites.
- cationic zeolites which do not have, a priori, any Bronsted acid sites, should not have a strong activity. Nevertheless, in certain cases, they have non-negligible activities characterized by reactions involving acidic sites.
- zeolites In order to obtain very little or even non-reactive zeolites, it is necessary either to find a particular mode of preparation such as, for example, activation under a reducing atmosphere such as NH 3 which makes it possible to neutralize the protons as soon as they are formed (H. Siegel, R. Scholler, B. Staudte, JJ Van Dun, WJ Mortier, Zeolites, 1987, 7, 372), or find a way to neutralize the detected activity.
- a reducing atmosphere such as NH 3
- the neutralization is the only option possible when it comes to working with a commercially supplied zeolite.
- the invention relates to a method for neutralizing a cationic zeolite exchanged at least partially with one or more mono- and / or multivalent cations.
- the neutralization process comprises at least the steps of dissolving a basic salt in an anhydrous organic solvent, degassing this solution by bubbling a dry inert gas, suspending the zeolite in this solution under dry inert gas , filtration and washing of the solid with an anhydrous organic solvent and calcination in the presence of oxygen and in a dry gas stream.
- the invention also relates to the use of neutralized zeolites for the separation or purification of hydrocarbon feeds.
- the invention relates to a method for neutralizing a cationic zeolite exchanged at least partially with one or more mono- and / or multivalent cations, said exchanged cationic zeolite being preferably of X, Y, A, ⁇ or MFI type, said method of neutralization comprising at least the following steps:
- anhydrous organic solvent preferably an anhydrous alcohol, very preferably anhydrous ethanol
- the multivalent cation (s) are generally divalent or trivalent cations and are generally alkaline earth or lanthanide cations.
- the monovalent cation (s) are generally alkaline cations.
- the steps a), b), c), d) and e) of the neutralization process can generally be carried out under the operating conditions described below.
- Step a) Step a) is that of dissolving a basic salt in an anhydrous organic solvent.
- concentration of the basic salt is generally greater than 0.01 mol / l, preferably between 0.01 mol / l and 5 mol / l, the temperature between 20 and 60 ° C.
- the stage is generally carried out with stirring at a speed of between 500 and
- Step b) is that of degassing the solution obtained at the end of step a) by bubbling a dry inert gas, preferably dry argon, and maintaining the solution under dry inert gas, preferably dry argon.
- a dry inert gas preferably dry argon
- Step c) is that of suspending the zeolite in the solution prepared in b), under dry inert gas, preferably dry argon, and with stirring at a speed generally of between 500 and 700 rpm , the temperature generally being between 20 and 40 ° C. and the duration of the step generally being between 1 to 24 hours.
- Step d) is that of filtration and washing of the solid obtained at the end of step c) with an anhydrous organic solvent, preferably an anhydrous alcohol, very preferably anhydrous ethanol.
- an anhydrous organic solvent preferably an anhydrous alcohol, very preferably anhydrous ethanol.
- the volume of the anhydrous organic solvent used is generally at least equal to that used during the ion exchange step.
- step d) the solid obtained at the end of step d) can be stored without risk of evolution of its acid-base characteristics.
- Step e) is that of calcination of the solid obtained at the end of step d) in the presence of oxygen, at a temperature generally of between 200 and 600 ° C., preferably between 300 and 550 ° C., for a period of generally between 1 and 20 hours, preferably between 10 and 15 hours, in a dry gas stream of between 3 and 8 I. h -1 .g -1 , preferably under a stream of dry compressed air.
- the exchange rate obtained in the mono- and / or multivalent cation (s) is generally verified by inductively coupled plasma atomic emission spectrometry (ICP-AES).
- the cationic zeolite thus prepared can be used in any process for the separation or purification of hydrocarbon feeds.
- Potential applications include separation of paraxylene from an aromatic C8 cut, separation of linear paraffins from a kerosene cut, separation of linear paraffins / branched paraffins from a gasoline cut, separation of paraffins / olefins, removal of mercaptans from natural gas, desulphurization of FCC gasolines, denitrogenation of C4-C6 feedstocks for oligomerization.
- This suspension is carried out in a three-necked balloon. b) degassing of the suspension prepared in a) for a few minutes by bubbling argon, then maintaining it under an inert atmosphere of argon but without bubbling c) stirred with magnetic stirring at 500 rpm and under heating in a bath of silicone oil at 150 ° C. for 24 h.
- the three-neck flask is surmounted by a reflux refrigerant system to prevent evaporation of solution during the experiment d) samples of 0.05 ml at regular time intervals and analysis thereof by column gas chromatography PONA (Paraffin, Olefin, Naphtene, Aromatic) with a diameter of 200 ⁇ m, a film thickness of 0.5 ⁇ m and a length of 50 m.
- PONA Paraffin, Olefin, Naphtene, Aromatic
- 1-dodecene From the chromatograms, the composition of each sample is determined in 1-dodecene and its different isomers (2-dodecene, 3-dodecene, 4-dodecene, 5-dodecene and 6-dodecene) from which the conversion is calculated.
- 1-dodecene according to the following equation:
- the curve of the conversion to 1-dodecene can then be plotted as a function of the reaction time, the slope of the tangent at the first points of this curve corresponding to the initial speed of the isomerization reaction of 1-dodecene and reflecting the initial activity of the zeolite tested, that is to say its number of active sites vis-à-vis a reaction involving acid sites.
- An NaCaY zeolite with an exchange rate of approximately 25% is prepared by ion exchange according to the prior art from a NaY zeolite in the form of a powder in an aqueous medium.
- approximately 10 g of the zeolite are directly suspended in 1 l of CaCb solution at 0.6 g / l (solution prepared from CaCl 2 .2H 2 O from Aldrich).
- the flask is heated by means of a silicone bath at 60 ° C. and the suspension is kept under magnetic stirring.
- a refrigerant system is adapted to avoid evaporation of the suspension during exchange.
- the exchange lasts approximately 7 hours.
- the zeolite After exchanging the zeolite is filtered, washed with distilled water and dried in an oven at 110 ° C. Then, it is dehydrated under a stream of nitrogen (3 lh '1 .g zeo r 1 ) in a tube furnace 450 0 C for 2 h so as to remove the adsorbed water in the zeolite during the exchange.
- This zeolite denoted NaCaY-26%, is subjected to two basic washes, one in an aqueous medium and the other in anhydrous ethanol according to the present invention.
- zeolite For washing with an aqueous alkaline solution, 10 g of zeolite are suspended in 250 ml of a solution prepared by dissolving 4.1 g of NaOH pellets in 1 l of distilled water (concentration 0.1 mol / l). l) and the system is placed under magnetic stirring at 500 rpm for 4h at room temperature and the solid is filtered and activated under a stream of nitrogen at 45O 0 C for 2 hours in column. The recovered solid is denoted NaCaY-26% -NaOH 0.1 M (water).
- Basic washing in an alcoholic medium is carried out as described in the present invention.
- a basic solution of NaOH is prepared by dissolving 4.1 g of NaOH pellets in 1 l of anhydrous ethanol after argon bubbling in. this one. Then, 10 g of zeolite are suspended in 250 ml of this solution. The whole is stirred magnetically at 500 rpm at 25 0 C for 4 h. After filtration and recovery of the solid, it is calcined at 550 ° C. for 2 h under a stream of dry compressed air. The recovered solid is denoted NaCaY-26% -NaOH 0.1 M (ethanol).
- the residual acidity of these three solids, NaCaY-26%, NaCaY-26% -NaOH 0.1 M (water) and NaCaY-26% -NaOH 0.1 M (ethanol) is determined by a transformation model reaction.
- an olefin (1-dodecene) that characterizes weak activities.
- the differences in the activity of the three NaCaYs with each other and with the starting NaY are presented in FIG. 1 which shows the variation of the 1-dodecene conversion as a function of time for the NaY (starting zeolite), NaCaY-26. % (solid not treated with a basic solution), NaCaY-26% - 0.1M NaOH (water) and NaCaY-26% -NaOH 0.1M (ethanol).
- the activity of the NaCaY zeolite is not reduced when it undergoes an alkaline wash in an aqueous medium, but is when it is subjected to washing of the same type in a nonaqueous alcoholic medium (initial rates of reaction, conversion and number of products formed very close). The activity becomes even lower than that of the starting zeolite NaY.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0802950A FR2931704B1 (fr) | 2008-05-28 | 2008-05-28 | Procede de neutralisation d'une zeolithe cationique |
| PCT/FR2009/000530 WO2009153424A1 (fr) | 2008-05-28 | 2009-05-05 | Procede de neutralisation d'une zeolithe cationique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2285484A1 true EP2285484A1 (fr) | 2011-02-23 |
Family
ID=40231245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09765986A Withdrawn EP2285484A1 (fr) | 2008-05-28 | 2009-05-05 | Procede de neutralisation d'une zeolithe cationique |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20110071333A1 (fr) |
| EP (1) | EP2285484A1 (fr) |
| FR (1) | FR2931704B1 (fr) |
| WO (1) | WO2009153424A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012018514A2 (fr) | 2010-07-26 | 2012-02-09 | Sortwell & Co. | Procédé de dispersion et d'agrégation de composants de suspensions minérales et polymères multivalents à poids moléculaire élevé pour agrégation d'argile |
| US8721896B2 (en) | 2012-01-25 | 2014-05-13 | Sortwell & Co. | Method for dispersing and aggregating components of mineral slurries and low molecular weight multivalent polymers for mineral aggregation |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1554711A (fr) * | 1967-10-12 | 1969-01-24 | ||
| GB1266781A (fr) * | 1969-02-20 | 1972-03-15 | ||
| US3888939A (en) * | 1973-09-28 | 1975-06-10 | Universal Oil Prod Co | Process for separating olefins by adsorption |
| DE3806932A1 (de) * | 1988-03-03 | 1989-09-14 | Vaw Ver Aluminium Werke Ag | Verfahren zur modifizierung eines zeoliths |
| US5292990A (en) * | 1988-12-07 | 1994-03-08 | Exxon Research & Engineering Co. | Zeolite composition for use in olefinic separations |
| US5206195A (en) * | 1990-05-31 | 1993-04-27 | Kanebo Ltd. | Stablized synthetic zeolite and a process for the preparation thereof |
| US5329057A (en) * | 1991-04-19 | 1994-07-12 | The Dow Chemical Company | Process for the cyclodimerization of 1,3-butadienes to 4-vinylcyclohexenes |
| FR2690856B1 (fr) * | 1992-05-06 | 1995-01-06 | Inst Francais Du Petrole | Catalyseur à base de zéolithe omega renfermant au moins un métal des groupes IIA, IVB, IIB ou IVA et son utilisation en isomérisation d'une coupe C8 aromatique. |
| US5914013A (en) * | 1995-01-31 | 1999-06-22 | The Regents Of The University Of California | Selective thermal and photooxidation of hydrocarbons in zeolites by oxygen |
| AU2002220152A1 (en) * | 2000-11-21 | 2002-06-03 | Exxonmobil Chemical Patents Inc | Process for producing light olefins |
| CN101134760B (zh) * | 2006-08-31 | 2010-05-12 | 上海医药工业研究院 | 去除粉末状头霉素c中色素的方法 |
-
2008
- 2008-05-28 FR FR0802950A patent/FR2931704B1/fr not_active Expired - Fee Related
-
2009
- 2009-05-05 US US12/994,202 patent/US20110071333A1/en not_active Abandoned
- 2009-05-05 EP EP09765986A patent/EP2285484A1/fr not_active Withdrawn
- 2009-05-05 WO PCT/FR2009/000530 patent/WO2009153424A1/fr not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009153424A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009153424A1 (fr) | 2009-12-23 |
| FR2931704B1 (fr) | 2012-05-04 |
| US20110071333A1 (en) | 2011-03-24 |
| FR2931704A1 (fr) | 2009-12-04 |
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