CN105622355B - A kind of method of synthesizing phenol class compound - Google Patents

A kind of method of synthesizing phenol class compound Download PDF

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Publication number
CN105622355B
CN105622355B CN201410592980.9A CN201410592980A CN105622355B CN 105622355 B CN105622355 B CN 105622355B CN 201410592980 A CN201410592980 A CN 201410592980A CN 105622355 B CN105622355 B CN 105622355B
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gold
guaiacol
catalyst
golden
chlorine
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CN105622355A (en
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张宗超
毛璟博
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Dalian Institute of Chemical Physics of CAS
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    • Y02P20/52Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

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Abstract

The present invention provides a kind of method of synthesizing phenol class compound, belongs to organic synthesis field.The present invention is used carries out hydrogenation deoxidation reaction containing Au catalyst to guaiacol or alkyl guaiacol, realizes the high selectivity of phenol compound, specially:Guaiacol or alkyl guaiacol solution are dissolved into organic solvent, Au catalyst will be contained to be added in guaiacol or alkyl guaiacol solution, it seals rear substitution and removes oxygen, finally it is passed through the hydrogen no more than 30MPa, range of reaction temperature is 473~873K, and the phenol compound is made in 1~12h of reaction.The invention has the advantages that having used Au catalyst, keep the selectivity of phenol compound in reaction product very high, and almost without phenyl ring saturated products.For reaction temperature in room temperature~873K, guaiacol or alkyl guaiacol can realize complete conversion, and all phenol of product and its alkyl derivative quickly.Catalyst repeat performance in batch still reaction is preferable, and can long-play on a fixed bed.

Description

A kind of method of synthesizing phenol class compound
Technical field
The present invention relates to organic synthesis field, more particularly to a kind of method of synthesizing phenol class compound.
Background technology
Lignin is the part in biomass lignocellulosic composition, and proportion is larger.Lignin is mainly by three Kind structural unit is constituted:P-hydroxyphenyl class, guaiaci lignum base class and lilac base class.With the continuous depth to lignin Study on Cleavage Enter, the post-processings such as lignin pyrolysis product hydro-upgrading also become a highly important part in current regenerative resource research.
Currently, in the research of lignin pyrolysis product after-treatment, people are usually using lignin structure unit chemical combination Object adds the reactions such as hydrogen as model compound to study it.Guaiacol is exactly one of common several model compounds. R.N.Olcese et al. carries out guaiacol hydrotreating in fixed bed using Fe/SiO2 catalyst with reaction temperature 673K, Include phenol, benzene derivate and cresols in its obtained product, yield is respectively 34%, 38% and 12%.Junming Sun etc. carries out hydrotreating at 723K using Pt/Fe/C catalyst to guaiacol, and the yield of phenol product is 80%.Van Ngoc Bui et al. have studied and CoMoS/Al2O3Performance of the catalyst in guaiacol hydrogenation reaction.When using CoMoS/ ZrO2As catalyst, reaction temperature be 573K when, primary product be phenol and phenyl ring saturated products, yield is respectively 56% He 30%;When using CoMoS/Al2O3As catalyst, reaction temperature be 573K when, primary product be phenol, cresols, phenyl ring saturation Product and catechol, yield are respectively 32%, 26%, 13% and 10%.Sin-Kuan Wu et al. are catalyzed using NiP/SiO2 Agent carries out hydrotreating to guaiacol, and primary product is benzene derivate, phenol and cresols, and yield is respectively 36%, 12% With 6%.Cho Rim Lee et al. researchs Pt, Pd, Rh and Ru are supported on SiO2-Al2O3Supported catalyst is in guaiacol Performance in hydrogenation reaction.When reaction temperature 523K, reaction product is hexamethylene and its derivative, selectivity 100%.
In studying at present the hydrogenation deoxidation of guaiacol, product distribution is mostly more dispersed, generally includes phenol Close object, benzene derivate and phenyl ring saturated products.There is also the reaction time is long and the problems such as reaction temperature is high in terms of reaction condition.
The present invention uses nano catalyst to carry out hydrotreating to guaiacol for the first time, and product is phenol chemical combination Object, selectivity of product are relatively simple.Simultaneous reactions temperature, reaction pressure and reaction time are more suitable.
Invention content
The present invention provides a kind of method preparing phenol compound with high selectivity by guaiacol, and feature exists In:Using nano catalyst to guaiacol hydrotreating, the highly selective of phenol product is realized.
A kind of method of synthesizing phenol class compound of the present invention, using containing Au catalyst to guaiacol or alkyl guaiaci lignum Phenol carries out hydrogenation deoxidation reaction, realizes the high selectivity of phenol compound, specially:
Guaiacol or alkyl guaiacol solution are dissolved into organic solvent, Au catalyst will be contained and be added to guaiaci lignum In phenol or alkyl guaiacol solution, sealing rear substitution removes oxygen, is finally passed through the hydrogen no more than 30MPa, reaction temperature The phenol compound is made in ranging from 473~873K, 1~12h of reaction;
The amount containing Au catalyst is the 0.1~40% of the quality of guaiacol or alkyl guaiacol;
The organic solvent is:Benzene, toluene, hexamethylene, n-tetradecane or hexadecane.
Described containing Au catalyst is that the load type gold catalyst that nanogold particle is loaded to carrier is loaded by aurosol, Or the load type gold catalyst prepared by deposition-precipitation method or equi-volume impregnating using gold-containing solution;The load capacity of gold is to urge Between 0.001wt%~5wt% of agent quality;
The carrier be titanium oxide, zirconium oxide, aluminium oxide, silica, activated carbon or TS-1 zeolite molecular sieves at least It is a kind of.
It is the compound containing gold to prepare the golden raw material that catalyst uses:Tetra chlorauric acid, potassium chloroaurate, sodium aurothiomalate, gold Smart tricarboxylic acids, aurin tricarboxyli acid (ATA) ammonium salt, phenolic aldehyde auramine, gold monochloride, gold trioxid, trichlorine (pyridine) gold, gold trichloride, Two gold medal (I) of [bis- (diphenylphosphine) ethane of 1,2-] dichloro, bis- (chlorine gold (I)) bis- (diphenylphosphine) methane, tetrachloro golden (III) acid The sour lithium of sodium, tetrachloro golden (III), tetra chlorauric acid ammonium, gold potassium bromide, gold hydroxide, chlorine (dimethyl vulcanization) golden (I), tetrabromo gold Acid, gold bromide, aurous sulfide, aurous iodide, (dimethylphenylphosphine) chlorauride, 1- sulfydryls-(triethylene glycol) methyl ether function Change solution of gold nanoparticles, three (triphenylphosphine gold) oxygen tetrafluoro boric acids, aurous cyanide, lauryl mercaptan and is functionalized Jenner's grain of rice Son, n-octyl mercaptan functionalization gold nanoparticle, chlorine [bis- (2,4,6- trimethylphenyls) imidazoles -2- subunits of 1,3-] golden (I), chlorine [2- (di-t-butyl phosphorus) diphenyl] gold, chlorine [three (p-trifluoromethyl phenyl) phosphines] golden (I), chloroformyl fund, chlorine [three (p-methylphenyls) Phosphine] golden (I), chlorine [three (o-tolyl) phosphines] golden (I), chlorine (triethyl phosphine) golden (I), chlorine (tricyclohexyl phosphine) changes golden (I), chlorine (triphenyl phosphorous acid) gold, (11- mercapto-undecanoics base) four (ethylene glycol) functionalization gold nanoparticle, (acetonitrile) [(2- biphenyl) Di-t-butyl phosphine] hexafluoro-antimonic acid golden (I), 1,3- bis- (2,6- diisopropyl phenyl imidazoles -2- subunits) gold (I) acyl chlorides, bis- rings of 2- Hexyl phosphine -2 ', bis- (fluoroform sulphonyl) imines of 4 ', 6 '-tri isopropyl biphenyls gold (I), [bis- (fluoroform sulphonyl) imines] (triphenylphosphine) gold (I) (2:1) toluene adduct, chlorine [2- dicyclohexyls (2 ', 4 ', 6 '-tri isopropyl biphenyl base) phosphine] gold (I), at least one of chlorine [three (2,4- di-tert-butyl-phenyls) phosphorous acid] gold and nanogold particle.
When preparing Au catalyst using deposition-precipitation method, the solution of gold-containing compound is added dropwise to containing carbonate, sulfuric acid PH value is adjusted in root or solution hydroxy to keep in 1~13 range, then according to gold and the mass ratio 0.0001 of carrier~ 20wt% is added carrier and adjusts pH value and be maintained in 1~13 range, mixture stirred at a temperature of room temperature is to 423K 1min~ It is filtered, washed after 72h to roasting 1min~10h between dry 1min~72h, 273K~773K between neutral, 273K~473K.
When preparing Au catalyst using the infusion process, by the gold-containing compound of a concentration of 0.0001wt%~50wt% It is dissolved in water, formic acid, acetic acid, propionic acid, methanol, ethyl alcohol, propyl alcohol, butanol, amylalcohol and is configured to gold solution, according still further to gold and carrier Mass ratio 0.0001wt%~20wt%, carrier is added in gold solution, stand or stirring 1min~72h after 273K~ Dry 1min~72h between 473K, and 1min~10h is roasted between 273K~773K.
When preparing nano gold sol load type gold catalyst, nano gold sol is adjusted into pH value in 1~13 range, then Carrier is added in aurosol solution according to mass ratio 0.0001wt%~20wt% of gold and carrier and is adjusted to pH value Then same range stirs 1min~72h, pH is adjusted again to 1~13 range after carrier can also be added in nano-Au solution It is interior, it is filtered, washed to roasting 1min~10h between dry 1min~72h, 273K~773K between neutral, 273K~473K.
Gold-containing compound is dissolved when preparing nano gold sol, and into solution be added stabilizer, reducing agent, room temperature~ 1min~12h is handled at a temperature of 423K.
When preparing nano gold sol, by the gold-containing compound of a concentration of 0.0001wt%~50wt% be dissolved in water, formic acid, It is configured to gold solution in a kind of solvent in acetic acid, propionic acid, methanol, ethyl alcohol, propyl alcohol, butanol, amylalcohol, according still further to gold and citric acid The molar ratio 1 of sodium (reducing agent, stabilizer):100:~2000, by citric acid under strong stirring condition between 273K~373K Sodium (reducing agent) is added in gold solution, and solution boiling 1min~10min after reducing agent is added.
Advantages of the present invention:The present invention refers to a kind of by guaiacol, the preparation of alkyl guaiacol hydrogenation deoxidation The method of phenol compound.Advantage is to have used Au catalyst, makes the selectivity of phenol compound in reaction product very Height, and almost without phenyl ring saturated products.For reaction temperature in room temperature~873K, guaiacol or alkyl guaiacol can be very It is fast to realize conversion, and all phenol of product and its alkyl derivative completely.Catalyst is reused in batch still reaction Better performances, and can long-play on a fixed bed.
Specific implementation mode
Golden content can be measured by ICP or XRF in Au catalyst of the present invention, usual for load type gold catalyst Golden carrying capacity can be obtained preferable effect within 20wt.%.Gold is set to have in Muffle kiln roasting Au catalyst first Effect is attached to carrier surface.A certain amount of Au catalyst is added in reactant solution, sealing rear substitution removes oxygen, finally It is passed through the hydrogen of certain pressure (within 30MPa).By temperature of reactor control in 373K between 873K, reaction a period of time with After sample, calculate feed stock conversion and each product yield.
n0:Reflect the guaiacol mole (mol) in raw material;
n1:After reaction in reaction solution guaiacol mole (mol).
∑n2:The summation of phenol compound mole.
Embodiment 1
Deposition-precipitation method prepares Supported Gold Particle Catalysts:60ml chlorauric acid solutions are added in 1g titania supports In, a concentration of 0.83mmol/L of gold chloride.The NaOH solution that 0.2mol/L is added dropwise in mixture in the state of stirring adjusts pH value It 9.0, keeps pH value that 12h is stirred at room temperature, then stops stirring and stand 12h.Mixture is finally filtered, and uses deionization Water washing filter cake to filtrate is neutrality.Filter cake dry 12h at 380K.The quality of Gold Samples is with carrier quality ratio 0.74wt%.Au catalyst is finally roasted to 2h in Muffle furnace, cooling is spare under 623K.
It takes 0.30g catalyst to be placed in high pressure intermittent kettle reactor, the guaiacol of 1.50g is then added into reaction kettle With 25ml toluene.Reaction kettle is sealed, 3.0MPa hydrogen is passed through after being purged 3 times using nitrogen.Reaction kettle is warming up to 573K, is stirred Mix rate 700rpm sustained responses 4h.
Embodiment 2
Reaction time is 7h, and method for preparing catalyst, feeding quantity and reaction condition are substantially the same manner as Example 1.
Embodiment 3
Reaction time 12h, method for preparing catalyst, feeding quantity and reaction condition are substantially the same manner as Example 1.
The reaction result of Examples 1 to 3 is shown in Table 1.
1. Examples 1 to 3 reaction result summary sheet of table
Embodiment 4
Reaction temperature is 523K, and method for preparing catalyst, feeding quantity and reaction condition are substantially the same manner as Example 1.
Embodiment 5
Reaction temperature is 673K, and method for preparing catalyst, feeding quantity and reaction condition are substantially the same manner as Example 1.
The reaction result of embodiment 4,5 is shown in Table 2.
The reaction result of 2. embodiment 4,5 of table summarizes
Embodiment 6
Reaction raw materials are to propyl guaiacol 2.02g, method for preparing catalyst, feeding quantity and the same embodiment of reaction condition 1.Reaction result is shown in Table 3.
3. embodiment of table, 6 reaction result
Embodiment 7
Catalyst amount 0.05g, method for preparing catalyst, feeding quantity and reaction condition are substantially the same manner as Example 1.
Embodiment 8
Catalyst amount 0.6g, method for preparing catalyst, feeding quantity and reaction condition are substantially the same manner as Example 1.
The reaction result of embodiment 7,8 is shown in Table 4.
The reaction result of 4. embodiment 7,8 of table summarizes
Embodiment 9
Equi-volume impregnating prepares Supported Gold Particle Catalysts:It is water-soluble that 0.8ml gold chlorides are added in 1g titanium dioxide carriers In liquid, a concentration of 0.032mol/L of gold chloride.1h is stirred at room temperature, then mixture dry 12h at 380K.Gold Samples Quality and carrier quality ratio be 0.5wt%.Au catalyst is finally roasted to 2h in Muffle furnace, cooling is spare under 623K.
Feeding quantity and reaction condition are same as Example 1.Reaction result is shown in Table 5.
The reaction result of 5. embodiment 9 of table summarizes
Embodiment 10
Golden supported catalyst is prepared using nano gold sol.
When preparing nano gold sol, solution 1 is the aqueous solution of chloraurate that 80ml is heated to a concentration of 0.32mmol/L of 333K. Solution 2 is 5ml 1wt.% tannic acid aqueous solutions, 5ml 25mmol/L K2CO3Aqueous solution, 4ml 1wt.% trisodium citrate dihydrates The mixture of aqueous solution and 6ml deionized waters.Solution 2 is also heated at 333K.Solution 2 is slowly added into the solution being vigorously stirred Solution 3 is obtained in 1.Solution 3 is boiled into 2min postcoolings, solution is nano gold sol, and particle diameter is about 3nm.
When preparing nano gold sol load type titanium dioxide catalyst, it is molten to adjust 100ml nanogold using 1M salpeter solutions Glue adjusts pH=2, and then 1g titanium dioxide is added in aurosol solution and pH value is adjusted to same range, is then stirred 2h.After being filtered, washed to neutrality 2h is roasted between 383K drying 12h and at 623K.
Catalyst, reactant addition and reaction condition are same as Example 1.Reaction result is shown in Table 6.
The reaction result of 6. embodiment 10 of table summarizes
Comparative example
Using the titanium oxide that catalyst is unsupported gold, feeding quantity and reaction condition are the same as embodiment 1.
7. comparative example reaction result of table
Guaiacol and alkyl guaiacol can be made efficiently to turn using Au catalyst it can be seen from the data of table 1~7 Phenol compound is turned to, product species are relatively simple, and phenyl ring is not saturated substantially.Temperature raising can improve reaction rate, Guaiacol can be totally converted after 400oC reactions 4h, and the selectivity of phenol compound is 81% or more.
Embodiments of the present invention are not limited by above-mentioned fact Example, other any Spirit Essences without departing from the present invention With under principle made by changes, modifications, substitutions, combinations, simplifications, should be equivalent substitute mode, be included in the present invention Within protection domain.

Claims (6)

1. a kind of method of synthesizing phenol class compound, it is characterised in that more created to guaiacol or alkyl using containing Au catalyst The wooden phenol carries out hydrogenation deoxidation reaction, realizes the synthesis of phenol compound, specially:
Guaiacol or alkyl guaiacol solution are dissolved into organic solvent, will contain Au catalyst be added to guaiacol or In alkyl guaiacol solution, sealing rear substitution removes oxygen, is finally passed through the hydrogen no more than 30MPa, range of reaction temperature The phenol compound is made for 473 ~ 873K, 1 ~ 12h of reaction;
The amount containing Au catalyst is the 0.1 ~ 40% of the quality of guaiacol or alkyl guaiacol;
The organic solvent is:Benzene, toluene, hexamethylene, n-tetradecane or hexadecane;
Described containing Au catalyst is that the load type gold catalyst that nanogold particle is loaded to carrier is loaded by aurosol, golden Between load capacity is the wt% of 0.001 wt% ~ 5 of catalyst quality.
2. the method for synthesizing phenol class compound according to claim 1, it is characterised in that:The carrier is titanium oxide, oxygen Change at least one of zirconium, aluminium oxide, silica, activated carbon or TS-1 zeolite molecular sieves.
3. the method for synthesizing phenol class compound according to claim 1, it is characterised in that:It is former to prepare the gold that catalyst uses Material is the compound containing gold:Tetra chlorauric acid, potassium chloroaurate, sodium aurothiomalate, aurin tricarboxyli acid (ATA), aurin tricarboxyli acid (ATA) ammonium salt, phenolic aldehyde Auramine, gold monochloride, gold trioxid, trichlorine(Pyridine)Gold, gold trichloride, two gold medal of [bis- (diphenylphosphine) ethane of 1,2-] dichloro (I), bis- (chlorine gold (I)) bis- (diphenylphosphine) methane, the sour sodium of tetrachloro golden (III), the sour lithium of tetrachloro golden (III), tetra chlorauric acid ammonium, four Potassium auric bromide, gold hydroxide, chlorine (dimethyl vulcanization) golden (I), four auribromohydric acids, gold bromide, aurous sulfide, aurous iodide, (diformazan Base Phenylphosphine) chlorauride, 1- sulfydryls-(triethylene glycol) methyl ether functionalization solution of gold nanoparticles, three (triphenylphosphine gold) oxygen Tetrafluoro boric acid, aurous cyanide, lauryl mercaptan functionalization gold nanoparticle, n-octyl mercaptan functionalization gold nanoparticle, chlorine [1,3- Bis- (2,4,6- trimethylphenyls) imidazoles -2- subunits] golden (I), chlorine [2- (di-t-butyl phosphorus) diphenyl] gold, [three (to fluoroform for chlorine Base phenyl) phosphine] golden (I), chloroformyl fund, chlorine [three (p-methylphenyl) phosphines] golden (I), chlorine [three (o-tolyl) phosphines] golden (I), chlorine (triethyl phosphine) gold (I), chlorine (tricyclohexyl phosphine) change golden (I), chlorine (triphenyl phosphorous acid) gold, (11- mercapto-undecanoics base) four (ethylene glycol) is functionalized gold nanoparticle, (acetonitrile) [(2- biphenyl) di-t-butyl phosphine] hexafluoro-antimonic acid golden (I), the bis- (2,6- of 1,3- Diisopropyl phenyl imidazoles -2- subunits) golden (I) acyl chlorides, 2- dicyclohexylphosphontetrafluoroborates -2 ', 4 ', 6 '-tri isopropyl biphenyls gold (I) is double (fluoroform sulphonyl) imines, [bis- (fluoroform sulphonyl) imines] (triphenylphosphine) golden (I) and toluene adduct, chlorine [2- bis- Cyclohexyl (2 ', 4 ', 6 '-tri isopropyl biphenyl base) phosphine] golden (I), chlorine [three (2,4- di-tert-butyl-phenyls) phosphorous acid] Jin Jina At least one of rice gold particle;
In [bis- (fluoroform sulphonyl) imines] (triphenylphosphine) gold (I) and toluene adduct, [bis- (fluoroform sulphonyl) Imines] (triphenylphosphine) golden (I) and toluene mole ratio be 2:1.
4. the method for synthesizing phenol class compound according to claim 1, it is characterised in that:Prepare nano gold sol support type When Au catalyst, nano gold sol is adjusted into pH value in 1 ~ 13 range, then according to the mass ratio 0.0001 of gold and carrier Carrier is added in aurosol solution and pH value is adjusted to same range by the wt% of wt% ~ 20, then stirs 1min ~ 72h, warp It is filtered, washed to dry 1min ~ 72h between neutral, 273K ~ 473K, 1min ~ 10h is roasted between 273K ~ 773K.
5. the method for synthesizing phenol class compound according to claim 4, it is characterised in that:It will contain when preparing nano gold sol Gold compound dissolves, and stabilizer, reducing agent are added into solution, and 1min ~ 12h is handled at a temperature of room temperature ~ 423K.
6. the method for synthesizing phenol class compound according to claim 5, it is characterised in that:It, will when preparing nano gold sol The gold-containing compound of a concentration of wt% of 0.0001 wt% ~ 50 is dissolved in water, formic acid, acetic acid, propionic acid, methanol, ethyl alcohol, propyl alcohol, fourth It is configured to gold solution in a kind of solvent in alcohol, amylalcohol, according still further to the molar ratio 1 of gold and sodium citrate:100:~ 2000, Sodium citrate is added in gold solution under strong stirring condition between 273K ~ 373K, be added reducing agent after solution boiling 1min ~ 10min。
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CN109772333B (en) * 2017-11-15 2022-03-18 中国科学院大连化学物理研究所 Metal surface coating catalyst directly prepared from solid and application thereof
CN109772332B (en) * 2017-11-15 2022-03-18 中国科学院大连化学物理研究所 Supported metal catalyst directly prepared from solid and application thereof
CN108276240B (en) * 2018-03-13 2020-11-03 大连大学 Method for synthesizing cyclohexane

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