CN104549507B - Preparation method of iron-based catalyst for alkylation reaction - Google Patents
Preparation method of iron-based catalyst for alkylation reaction Download PDFInfo
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 239000003054 catalyst Substances 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 10
- 238000005804 alkylation reaction Methods 0.000 title abstract description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims abstract description 68
- 238000006243 chemical reaction Methods 0.000 claims abstract description 48
- 239000002608 ionic liquid Substances 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 15
- 150000001875 compounds Chemical class 0.000 claims abstract description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 21
- 150000002466 imines Chemical class 0.000 claims description 10
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 9
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 claims description 9
- -1 per-fluoroalkyl sulfonyl imines Chemical class 0.000 claims description 9
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 claims description 9
- 238000005727 Friedel-Crafts reaction Methods 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 8
- KAIPKTYOBMEXRR-UHFFFAOYSA-N 1-butyl-3-methyl-2h-imidazole Chemical compound CCCCN1CN(C)C=C1 KAIPKTYOBMEXRR-UHFFFAOYSA-N 0.000 claims description 7
- 239000003599 detergent Substances 0.000 claims description 7
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 7
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 claims description 6
- 230000004044 response Effects 0.000 claims description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims 1
- 238000003756 stirring Methods 0.000 abstract description 16
- 238000002156 mixing Methods 0.000 abstract description 10
- 150000004996 alkyl benzenes Chemical class 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000003547 Friedel-Crafts alkylation reaction Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000002194 synthesizing effect Effects 0.000 abstract description 3
- 230000007062 hydrolysis Effects 0.000 abstract description 2
- 238000006460 hydrolysis reaction Methods 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract description 2
- KWKXNDCHNDYVRT-UHFFFAOYSA-N dodecylbenzene Chemical compound CCCCCCCCCCCCC1=CC=CC=C1 KWKXNDCHNDYVRT-UHFFFAOYSA-N 0.000 abstract 1
- 125000005010 perfluoroalkyl group Chemical group 0.000 abstract 1
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium chloride Substances Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 8
- 238000006555 catalytic reaction Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- QRMHDYCPNIVCBO-UHFFFAOYSA-N [SH2]=N.[F] Chemical compound [SH2]=N.[F] QRMHDYCPNIVCBO-UHFFFAOYSA-N 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 239000002808 molecular sieve Substances 0.000 description 4
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 4
- CRSBERNSMYQZNG-UHFFFAOYSA-N 1-dodecene Chemical compound CCCCCCCCCCC=C CRSBERNSMYQZNG-UHFFFAOYSA-N 0.000 description 2
- BNSMSTOUBIWDOT-UHFFFAOYSA-N FS(=NF)C(C(C(C(C(C(F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F Chemical compound FS(=NF)C(C(C(C(C(C(F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F BNSMSTOUBIWDOT-UHFFFAOYSA-N 0.000 description 2
- 229910006095 SO2F Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 150000001993 dienes Chemical class 0.000 description 2
- 239000005457 ice water Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- FHDQNOXQSTVAIC-UHFFFAOYSA-M 1-butyl-3-methylimidazol-3-ium;chloride Chemical compound [Cl-].CCCCN1C=C[N+](C)=C1 FHDQNOXQSTVAIC-UHFFFAOYSA-M 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229910014351 N(SO2F)2 Inorganic materials 0.000 description 1
- 241000255964 Pieridae Species 0.000 description 1
- 239000003377 acid catalyst Substances 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 230000029936 alkylation Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229940069096 dodecene Drugs 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 150000003949 imides Chemical class 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004899 motility Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- LCCNCVORNKJIRZ-UHFFFAOYSA-N parathion Chemical compound CCOP(=S)(OCC)OC1=CC=C([N+]([O-])=O)C=C1 LCCNCVORNKJIRZ-UHFFFAOYSA-N 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000271 synthetic detergent Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a preparation method of an iron-based catalyst for alkylation reaction. The preparation method comprises the following steps: firstly preheating ionic liquid with a perfluoroalkyl group sulfimide structure to 60-90 DEG C, then adding an iron-containing compound, stirring for uniform mixing, and then reducing temperature to normal temperature; reacting at normal temperature for 6-24 hours for interreaction to generate a coordination compound so as to obtain the catalyst used for catalyzing Friedel-Crafts alkylation reaction. The catalyst prepared through the method disclosed by the invention is used for synthesizing the Friedel-Crafts alkylation reaction, such as the reaction of synthesizing dodecylbenzene by using benzene and 1-laurylene; in addition, the catalyst has the characteristics of high activity, high 2-LAB (2-Linear Alkylbenzene) selectivity, moderation in use condition, good water resistance, low possibility in hydrolysis and good recycling property and can be recovered through a simple method.
Description
Technical field
The present invention relates to the preparation synthesis of compound, is related to a kind of system of the catalyst for alkylated reaction based on ferrum
Preparation Method, refers specifically to per-fluoroalkyl sulfonyl imine structure, the preparation method of the catalyst system of iron content.
Background technology
Linear alkylbenzene (LAB)（LAB）, especially detergent alkylate is the important source material of synthetic detergent, world's linear alkylbenzene (LAB)
Annual requirement more than 3,000,000 tons, and estimated will be increased with 4% speed every year.Since nineteen sixty-eight first set Pacol device is used
Since production linear alkylbenzene (LAB), Friedel-Crafts alkylation process uses HF/AlCl3As catalyst.Because HF
With strong corrosivity and toxicity, so HF/ AlCl3Technique to equipment maintenance, safety in production bring a series of asking
Topic.Using HF, AlCl3Technique, after batch production terminates, catalyst component is difficult to be separated and recovered from utilizing, and this is also protected to environment
Shield brings difficulty.Therefore, there is high activity for the exploitation of Friedel-Crafts alkylated reactions is a kind of, high 2-LAB is selected
Property, and the catalyst with good circulation performance becomes the problem that people need to consider.
In recent years with going deep into for studying, ionic liquid has become the important catalysis material of a class.Per-fluoroalkyl sulfonyl
Imines and its salt can change its acidity due to the height delocalization of negative charge on its central nitrogen atom by changing its structure,
There is acidity adjustability, its applicable motility is improve.Therefore, per-fluoroalkyl sulfonyl imines catalyst system and catalyzing becomes replacement and passes
System acid catalyst, is catalyzed an important selection of benzene alkylation reaction.
The article that domestic researcher is delivered（Science China Chemistry (2010), 53, 1102）With
And patent CN 1225617A is disclosed using ionic liquid Et3NHCl- AlCl3Catalysis benzene synthesizes dodecyl with 1- laurylenes
The method of benzene；Other studies in China person also delivered article（Applied CatFeysis A: GenerFe (2005), 292,
354）, disclose use [Rmim] Al2Cl6The method that Br plasma liquid catalyst benzene synthesizes detergent alkylate with 1- laurylenes.
Zhao etc.（Chinese Journal of Chemical Engineering, 2006. 14(3): p. 289-293）In text
[bmim] Cl/FeCl is described in chapter3The situation of catalyst Alkylation of benzene with 1-dodecene reaction.Disclosure above institute
Though the characteristics of catalyst system and catalyzing stated is active high, after recycling, catalysis activity declines substantially, and they are to water for they
The tolerance divided is low, i.e., easily meet water inactivation.
Use HY types molecular sieve catalyst catalysis disclosed in patent CN 1077808C and patent CN 1131107C etc.
Benzene synthesizes the reaction of detergent alkylate with 1- laurylenes, though having the advantages that selectivity is very high, its reaction temperature is higher, and instead
Answer pressure high, this limits to a certain extent the use of molecular sieve.And the spy that molecular sieve is generally inactivated with easy carbon distribution
Point, thus from principle molecular sieve catalysts cyclicity not as good as ionic liquid class catalyst of the present invention.
The content of the invention
The purpose of the present invention is for the deficiencies in the prior art, there is provided a kind of new for Friedel-Crafts alkyl
Change the preparation method of the catalyst of reaction so as to which the catalyst for preparing has reactivity high, and 2- linear alkylbenzene (LAB)s are selected
Property it is higher, use condition is gentle, separates simple, recycles the characteristics of performance is good, and resistance to water is strong.
The inventive method is：First the ionic liquid with per-fluoroalkyl sulfonyl imine structure is preheated to into 60~90 DEG C, so
After add iron containing compoundses, room temperature is down to after being uniformly mixed；6~24h is reacted under room temperature so as to which the generation that reacts to each other coordinates
Thing, obtains the catalyst for being catalyzed Friedel-Crafts alkylated reactions；Iron containing compoundses with have per-fluoroalkyl sulfonyl
The mol ratio of the ionic liquid of imine structure is 1：1~2：1；
Described iron containing compoundses are ferric chloride（FeCl3）, three（Enjoy a double blessing oroalkane sulfonyl）One kind of imines ferrum is several
Kind；Wherein three（Enjoy a double blessing oroalkane sulfonyl）The structural formula of imines ferrum is Fe (N (SO2Rf)2)3, Rf=CnF2n+1, n=0~6；
The described ionic liquid with per-fluoroalkyl sulfonyl imine structure is being needed under the conditions of 60~140 DEG C using front
Vacuum drying 24h；
The described ionic liquid with per-fluoroalkyl sulfonyl imine structure is [1- butyl -3- Methylimidazole .s] [double trifluoros
Sulfonyloxy methyl imines].
The catalyst that the inventive method is prepared is used for Friedel-Crafts alkylated reactions, such as benzene and 1- laurylenes
The reaction of synthesis detergent alkylate, the active height of the catalyst, 2- linear alkylbenzene (LAB)s（2-LAB）Selectivity is higher, using bar
Part is gentle, can be reclaimed by straightforward procedure, and cyclicity it is good the characteristics of.
Benzene and 1- laurylenes synthesize in the reaction of detergent alkylate, and the coordination compound prepared by the use of the present invention is used as catalysis
Agent, catalyst charge is 5~10wt ﹪ that benzene and 1- laurylenes add quality sum, and reaction temperature is 30~90 DEG C, 1- ten
Diene is 1 with the mol ratio of benzene：1~1:7, the response time is 12~24h, and pressure is normal pressure.
Described three（Enjoy a double blessing oroalkane sulfonyl）Imines ferrum can synthesize by the following method：
By iron chloride FeCl3Mix with per-fluoroalkyl sulfonyl imines, obtain compound；Toluene is added in compound,
15~30min is reacted under room temperature, needs in time to remove the HCl for producing in course of reaction, filter to take solid；The appropriate first of solid
Benzene is washed, and is dried, that is, obtain corresponding three（Enjoy a double blessing oroalkane sulfonyl）Imines ferrum；Wherein iron chloride is sub- with per-fluoroalkyl sulfonyl
The mol ratio of amine is 1:3~1:5；Toluene is 2 with the mass ratio of compound:1~1:2.
Beneficial effects of the present invention are as follows：
The catalyst that the inventive method is prepared is used to synthesize Friedel-Crafts alkylated reactions, such as benzene and 1- ten
Diene synthesizes the reaction of detergent alkylate, the active height of the catalyst, 2- linear alkylbenzene (LAB)s（2-LAB）Selectivity is higher, makes
With mild condition, can be reclaimed by straightforward procedure, and cyclicity it is good the characteristics of.
The catalyst of the present invention based on ferrum need not be in strict N in preparation process2Carry out under protective condition, and this is urged
Agent resistance to water is compared with some catalyst based on aluminum（Such as Et3NHCl- AlCl3、[Rmim]Al2Cl6Br）More preferably, not facile hydrolysiss,
It is extensive with being likely more.
Specific embodiment
The present invention is further analyzed with reference to specific embodiment.
Prepare three（Enjoy a double blessing oroalkane sulfonyl）The embodiment of imines ferrum is as follows：
Embodiment 1-1
Take double fluorine sulfimide HN (SO2F)2（3.1g, 18.8mmol) it is dissolved in the 10ml toluene through distilling.It is being furnished with
In the round-bottomed flask of stirring and atmospheric vent, iron chloride FeCl is added3（1.02g, 6.3mmol）.By double fluorine sulfimides
Solution is slowly added drop-wise in round-bottomed flask.Need constantly to exclude the HCl for producing from atmospheric vent in course of reaction.Instead
Should carry out in ice-water bath.After reaction about 30min, filter, obtain solid, using 3 washing solids of 60ml benzene point, rear vacuum is done
It is dry, that is, obtain Fe (N (SO2F)2)3.Yield is about 44%.
Embodiment 1-2
Take double perfluoro hexyl sulfimide HN (SO2C6F13)2（4.65g, 6mmol) it is dissolved in the 10ml toluene through distilling.
In being furnished with the round-bottomed flask of stirring and atmospheric vent, iron chloride FeCl is added3（0.19g, 1.2mmol）.By double fluorine sulphurs
Imide solution is slowly added drop-wise in round-bottomed flask.Need in course of reaction constantly by the HCl for producing from atmospheric vent
Exclude.Reaction is carried out in ice-water bath.After reaction about 30min, filter, obtain solid, using 3 washing solids of 60ml benzene point,
After be vacuum dried, that is, obtain Fe (N (SO2C6F13)2)3.Yield is about 46%.
Prepare catalyst and as follows for synthesizing the embodiment of Friedel-Crafts alkylated reactions：
Ionic liquid [1- butyl -3- Methylimidazole .s] [bis trifluoromethyl sulfimide] used by example below is being used
Front needs are vacuum dried 24h under the conditions of 60~140 DEG C.
Embodiment 2-1
Weigh ionic liquid [1- butyl -3- Methylimidazole .s] [bis trifluoromethyl sulfimide]（1.64g, 3.9mmol）,
60 DEG C are heated under drying condition.Weigh iron chloride FeCl3（0.49g, 3.0mmol）, three（Double fluorine sulfimides）Ferrum Fe (N
(SO2C6F13)2)3（2.40g, 1.0mmol）, in being slowly added into heated ionic liquid, stirring makes it fully molten
Solution, mixing time is 24h.Stop stirring afterwards so as to slowly recover to room temperature.Obtain being tied with per-fluoroalkyl sulfonyl imines
The ionic-liquid catalyst of structure.
Take benzene（2.5g, 32.0mmol）With 1- laurylenes（5.4g, 32.0mmol）Mixing, is preheated to 30 DEG C of reaction temperature,
The preparation-obtained ionic-liquid catalyst of the 0.40g present invention is added, starts stirring, react 12h.Stand, system layering, lower floor
For catalyst, can be recycled by separating；Upper strata is product.Reaction 1- laurylenes conversion ratio is more than 90%, 2-LAB selectivitys
About 34%.
Embodiment 2-2
Weigh ionic liquid [1- butyl -3- Methylimidazole .s] [bis trifluoromethyl sulfimide]（0.84g, 2.0mmol）,
90 DEG C are heated under drying condition.Weigh iron chloride FeCl3（0.32g, 2.0mmol）, three（Perfluoro hexyl sulfimide）Ferrum Fe
(N(SO2F)2)3（1.19g, 2.0mmol）, in being slowly added into heated ionic liquid, stirring makes it fully molten
Solution, mixing time is 6h.Stop stirring afterwards so as to slowly recover to room temperature, that is, obtain being tied with per-fluoroalkyl sulfonyl imines
The ionic-liquid catalyst of structure.
Take benzene（5g, 64.0mmol）With 1- laurylenes（1.2g, 9.1mmol）Mixing, is preheated to 90 DEG C of reaction temperature, adds
The preparation-obtained ionic-liquid catalyst of the 0.62g present invention, starts stirring, reacts 24h.Stand, system layering, lower floor is to urge
Agent, can be recycled by separating；Upper strata is product.Reaction 1- laurylenes conversion ratio is about more than 90%, 2-LAB selectivitys
42%。
Embodiment 2-3
Weigh ionic liquid [1- butyl -3- Methylimidazole .s] [bis trifluoromethyl sulfimide]（0.42g, 1.0mmol）,
90 DEG C are heated under drying condition.Weigh iron chloride FeCl3（0.24g, 1.5mmol）, it is slowly added into heated
In ionic liquid, stirring makes it fully dissolve, and mixing time is 24h.Stop stirring afterwards so as to slowly recover to room temperature.I.e.
Obtain the ionic-liquid catalyst with per-fluoroalkyl sulfonyl imine structure.
Take benzene（5g, 64.0mmol）With 1- laurylenes（1.2g, 9.1mmol）Mixing, is preheated to 90 DEG C of reaction temperature, adds
The preparation-obtained ionic-liquid catalyst of the 0.62g present invention, starts stirring, reacts 24h.Stand, system layering, lower floor is to urge
Agent, can be recycled by separating；Upper strata is product.Reaction 1- laurylenes conversion ratio is about more than 90%, 2-LAB selectivitys
41%。
Embodiment 2-4
Weigh ionic liquid [1- butyl -3- Methylimidazole .s] [bis trifluoromethyl sulfimide]（0.42g, 1.0mmol）,
90 DEG C are heated under drying condition.Weigh three（Double fluorine sulfimides）Ferrum Fe (N (SO2C6F13)2)3（2.40g, 1.0mmol）, will
It is slowly added in heated ionic liquid, and stirring makes it fully dissolve, and mixing time is 24h.Stop stirring afterwards,
It is set slowly to recover to room temperature.Obtain the ionic-liquid catalyst with per-fluoroalkyl sulfonyl imine structure.
Take benzene（5g, 64.0mmol）With 1- laurylenes（1.2g, 9.1mmol）Mixing, is preheated to 90 DEG C of reaction temperature, adds
The preparation-obtained ionic-liquid catalyst of the 0.62g present invention, starts stirring, reacts 24h.Stand, system layering, lower floor is to urge
Agent, can be recycled by separating；Upper strata is product.Reaction 1- laurylenes conversion ratio is about more than 90%, 2-LAB selectivitys
40%。
Comparison study embodiment：
Take benzene（5g, 64.0mmol）With 1- laurylenes（1.2g, 9.1mmol）Mixing, is preheated to 90 DEG C of reaction temperature, adds
0.62g aluminum chloride AlCl3As catalyst, start stirring, react 24h.Stand, system is homogeneous, and catalyst cannot be separated.Instead
1- laurylenes conversion ratio is answered more than 90%, 2-LAB selectivitys about 27%.
Above-described embodiment is not that the present invention is not limited only to above-described embodiment, as long as meeting for the restriction of the present invention
Application claims, belong to protection scope of the present invention.
Claims (5)
1. a kind of preparation method of the catalyst for alkylated reaction based on ferrum, it is characterised in that the method is that first will have
The ionic liquid of per-fluoroalkyl sulfonyl imine structure is preheated to 60~90 DEG C, is subsequently adding iron containing compoundses, is uniformly mixed
After be down to room temperature；Then reaction system is placed in into N2Under atmosphere, 6~24h is reacted under room temperature so as to which the generation that reacts to each other coordinates
Thing, obtains the catalyst for being catalyzed Friedel-Crafts alkylated reactions；
The described ionic liquid with per-fluoroalkyl sulfonyl imine structure is [1- butyl -3- Methylimidazole .s] [bis trifluoromethyl
Sulfimide]；
Described iron containing compoundses are ferric chloride FeCl3, three (oroalkane sulfonyl of enjoying a double blessing) imines ferrum one or more；Wherein
The structural formula of three (oroalkane sulfonyl of enjoying a double blessing) imines ferrum is Fe (N (SO2Rf)2)3, Rf=CnF2n+1, n=0~6.
2. as claimed in claim 1 a kind of preparation method of the catalyst for alkylated reaction based on ferrum, its feature
It is iron containing compoundses and the mol ratio of the ionic liquid with per-fluoroalkyl sulfonyl imine structure is 1：1~2：1.
3. the preparation method of a kind of catalyst for alkylated reaction based on ferrum as described in claims 1 or 2, it is special
Levy is that the described ionic liquid with per-fluoroalkyl sulfonyl imine structure is being needed under the conditions of 60~140 DEG C very using front
Sky is dried 24h.
4. as claimed in claim 1 a kind of preparation method of the catalyst for alkylated reaction based on ferrum, its feature
Friedel-Crafts alkylated reactions described in being are the reaction that benzene and 1- laurylenes synthesize detergent alkylate, and catalyst adds
Enter 5~10wt ﹪ that amount is benzene and 1- laurylene gross masses, reaction temperature is 30~90 DEG C, and 1- laurylenes are with the mol ratio of benzene
1：1~1: 7, the response time is 12~24h, and pressure is normal pressure.
5. as claimed in claim 1 a kind of preparation method of the catalyst for alkylated reaction based on ferrum, its feature
It is that three described (oroalkane sulfonyl of enjoying a double blessing) imines ferrum synthesize by the following method：
By iron chloride FeCl3Mix with per-fluoroalkyl sulfonyl imines, obtain compound；Toluene is added in compound, under room temperature
15~30min of reaction, needs in time to remove the HCl for producing in course of reaction, filters to take solid；Solid is washed with toluene, and
It is dried, that is, obtains corresponding three (oroalkane sulfonyl of enjoying a double blessing) imines ferrum；Wherein iron chloride and per-fluoroalkyl sulfonyl imines mole
Than for 1: 3~1: 5；Toluene is 2: 1~1: 2 with the mass ratio of compound.
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