CN106824239B - Furfural hydrogenation prepares catalyst of furfuryl alcohol and preparation method thereof - Google Patents

Furfural hydrogenation prepares catalyst of furfuryl alcohol and preparation method thereof Download PDF

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CN106824239B
CN106824239B CN201710026173.4A CN201710026173A CN106824239B CN 106824239 B CN106824239 B CN 106824239B CN 201710026173 A CN201710026173 A CN 201710026173A CN 106824239 B CN106824239 B CN 106824239B
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catalyst
copper
preparation
filter cake
calcium carbonate
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CN106824239A (en
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史建公
刘志坚
苏海霞
张敏宏
桂建舟
刘丹
罗道威
张文平
张毅
张新军
蒋绍洋
钟健
曹光伟
文建军
殷喜平
伊红亮
李卫红
陈红军
孟凡立
胡学武
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China Petroleum and Chemical Corp
Sinopec Catalyst Co
Sinopec Catalyst Beijing Co Ltd
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China Petroleum and Chemical Corp
Sinopec Catalyst Co
Sinopec Catalyst Beijing Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J27/00Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/20Carbon compounds
    • B01J27/232Carbonates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/50Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D307/00Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/02Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
    • C07D307/34Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D307/38Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with substituted hydrocarbon radicals attached to ring carbon atoms
    • C07D307/40Radicals substituted by oxygen atoms
    • C07D307/42Singly bound oxygen atoms
    • C07D307/44Furfuryl alcohol

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  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
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Abstract

The invention discloses the catalyst and preparation method thereof that a kind of furfural hydrogenation prepares furfuryl alcohol.The catalyst is using calcium carbonate as carrier, using copper oxide as active constituent;The weight of copper oxide is 32wt%~75wt% of total catalyst weight.The production cost of catalyst of the invention is significantly reduced, and furfural conversion ratio and hydrogenation selectivity are also relatively high.

Description

Furfural hydrogenation prepares catalyst of furfuryl alcohol and preparation method thereof
Technical field
The present invention relates to the catalyst and preparation method thereof that a kind of furfural hydrogenation prepares furfuryl alcohol.
Background technique
Furfuryl alcohol is a kind of important fine chemicals, is widely used in the industries such as synthetic fibers, rubber and pesticide.Furfuryl alcohol can For manufacturing various kinds of resin, wherein the excellent plasticizer of cold tolerance can be made in furfuryl alcohol resin.In China, 80%~90% chaff Alcohol is consumed in furane resins.Furane resins are widely used in foundary industry as binder.Furfuryl alcohol is the good molten of varnish, pigment etc. Agent can also be used as rocket fuel.Levulic acid can be made through hydrolysis in furfuryl alcohol, be the intermediate of nutrient drug calcium levulinate.Chaff Alcohol is also used to produce friction pulley thermostable phenolic resin binder, such as braking sheet for automobile etc..Furfuryl alcohol be also production fragrance, Flavouring agent, medicine, pesticide intermediate.
Furfuryl alcohol is mainly derived from the deep processing of furfural, is that hydrogenation reaction occurs over just partial hydrogenation product on carbonyl.Chaff Aldehyde hydrogenating catalyst includes SiO2The catalyst of load, TiO2-SiO2The catalyst of load, Al2O3The catalyst of load, class neatly The catalyst etc. of stone load.From the catalyst for having Cr till now without Cr catalyst, developed to from imported catalyst domestic The performance of catalyst, furfural catalyst is higher and higher.For technology, Technical furfural catalyst is with Cu/SiO2Based on, this is to urge The advantages of agent is catalyst without Cr, but its selectivity has a certain gap compared with catalyst containing Cr.In addition, furfural hydrogenation The production cost for preparing the catalyst of furfuryl alcohol is still relatively high.In order to the market competitiveness, it is also necessary to further reduce it Production cost.
Currently, furfuraldehyde hydrogenation catalyst mostly uses greatly the oxide-based carrier such as silica or porous mass class carrier. For example, patent document CN102247883A is using loaded copper oxide on silica gel-modenite complex carrier;CN103007941A is adopted With copper oxide-silica composite oxides;Nano-metallic copper dispersion is anchored to shape on magnesia matrix by CN104841436A At catalyst;The carrier of CN105148923A is carbon nanotube, carbon fiber, graphene, SBA-15, gama-alumina or titanium dioxide Titanium;JP Tetsukai 2015-229657A is using transition metal such as mesoporous silicon oxide solid supported nickel, palladium, gold, copper, ruthenium and rhodiums; US4185022A is used and is deposited with copper-sodium metasilicate float stone as catalyst;It includes copper and fumed silica that US5591873A, which is used, Catalyst;US5977010A uses the catalyst including copper oxide, clay and the calcium silicates being formed in situ.For another example, non-patent Document 1 (Li Guoan, Speciality Petrochemicals, the 1st phase, the 40-44 pages, nineteen ninety-five) discloses several preparing furancarbinol from liquid-phase furol hydrogenation Catalyst, active constituent Cu, carrier are selected from γ-A12O3, active carbon, TM grades of white carbon blacks, general purpose grade SiO2、SiO2(40-120 Mesh) or SiO2(110-120 mesh).
The existing reduction for being mainly used for unsaturated carbon carbon bond using calcium carbonate as the catalyst of carrier, and grain is mostly used greatly Spend biggish calcium carbonate.For example, CN101811042A discloses one kind using palladium as active component, calcium carbonate or barium sulfate are carrier Selective hydrocatalyst.The catalyst is used to 1,4- butynediols being reduced to 1,4- butylene glycol.That is, this is urged Reduction reaction of the agent for triple carbon-carbon bonds to carbon-carbon double bond.For another example, CN104394988A discloses a kind of part hydrogenated carbon carbon The pull-up catalyst of woods moral of three keys, support material be partial size be greater than 10 μm, the calcium carbonate less than 120 μm, active constituent be Pd and Pb.The catalyst is also the reduction reaction for triple carbon-carbon bonds to carbon-carbon double bond.The patent document also indicates that: when for calcium carbonate When the partial size of support material is greater than 10 μm, the selectivity of hydrogenation process is significantly improved.It can be seen that it is existing with calcium carbonate be carry The catalyst of body is not used to the reduction of carbon oxygen unsaturated bond (such as carbonyl).In addition, such existing catalyst requirement carbon The granularity of sour calcium has to be larger than 10 μm.
To sum up, in the catalyst that existing furfural hydrogenation prepares furfuryl alcohol, there is no be using calcium carbonate as carrier, with copper The catalyst of active constituent;Particular without using calcium carbonate superfine powder as carrier, using copper as the catalyst of active constituent.In furfural Hydrogen is added to prepare in the industrialized production of furfuryl alcohol, catalyst occupies its very big cost.If can be made with cheap calcium carbonate Palladium isoreactivity ingredient is replaced by carrier and with relatively inexpensive copper activity ingredient, then for reducing the production cost of furfuryl alcohol very It is important, it is also most important for improving the furfuryl alcohol competitiveness of product in market.
Summary of the invention
It is an object of the present invention to provide the catalyst that a kind of furfural hydrogenation prepares furfuryl alcohol, production cost is shown Writing reduces, and furfural conversion ratio and hydrogenation selectivity are also relatively high.
It is another object of the present invention to provide the preparation methods that furfural hydrogenation prepares the catalyst of furfuryl alcohol, are produced into This significant decrease, product stability are good.
The application reaches above-mentioned purpose by following technical solution.
The present invention provides the catalyst that a kind of furfural hydrogenation prepares furfuryl alcohol, is to live with copper oxide using calcium carbonate as carrier Property ingredient;The weight of copper oxide is 32wt%~75wt% of total catalyst weight.
Furfural hydrogenation according to the present invention prepares the catalyst of furfuryl alcohol, it is preferable that the weight of copper oxide is overall catalyst weight 40wt%~70wt% of amount.
Furfural hydrogenation according to the present invention prepares the catalyst of furfuryl alcohol, it is preferable that the catalyst is closed without containing silication Object, rare earth compound and other transition metal in addition to copper.
Furfural hydrogenation according to the present invention prepares the catalyst of furfuryl alcohol, it is preferable that the partial size D50 of the calcium carbonate is 150~300nm, partial size D90 are 150~700nm.
Furfural hydrogenation according to the present invention prepares the catalyst of furfuryl alcohol, it is preferable that the partial size D50 of the calcium carbonate is 200~250nm, partial size D90 are 200~550nm.
Furfural hydrogenation according to the present invention prepares the catalyst of furfuryl alcohol, it is preferable that the catalyst is graininess, grain Degree is 15~150 μm.
The present invention also provides the preparation methods that above-mentioned furfural hydrogenation prepares the catalyst of furfuryl alcohol, it is preferable that it includes as follows Step:
(1) under lasting stirring action, ammonia aqua stream is added in copper-bath to form mixed liquor;Wherein, described Calcium carbonate is dispersed in copper-bath;
(2) under lasting stirring action, by sodium hydroxide solution, gradually stream is added in the mixed liquor, and stream leads to after adding Enter compressed gas to escape ammonia, so that slurries are formed, the Cu in the slurries2+No more than 30ppm;
(3) filter cake is obtained after filtering the slurries that step (2) obtains, is dried up filter cake using compressed gas;
(4) by step (3) drying after filter cake use be washed to filtrate pH value be 7~8, then with compressed gas will washing after Filter cake drying;
(5) filter cake that step (4) obtains is heated to catalyst butt at 105~115 DEG C and is not less than 98wt%, then powder The broken catalyst that furfuryl alcohol is prepared to get the furfural hydrogenation.
Preparation method according to the present invention, it is preferable that the copper-bath quality in step (1), in terms of cupric sulfate pentahydrate It is 6~18:1 with ammonium hydroxide mass ratio, mixing speed is 110~300rpm;In step (2), the sulfuric acid in terms of cupric sulfate pentahydrate Copper solution quality and sodium hydroxide mass ratio are 5~6:1, and mixing speed is 110~300rpm;In step (3), by step (2) the slurries filtering obtained, gained filtrate cycle is filtered, until filtrate is limpid, is dried up gained filter cake using compressed gas, Compressed gas therein is compressed air;In step (4), the filter cake after step (3) drying is used and is washed to filtrate pH value as 7 ~7.5, then dried up the filter cake after washing with compressed gas, compressed gas therein is compressed air;In step (5), heating Temperature is 108~112 DEG C, and heating time is 30~60 hours.
Furfural hydrogenation according to the present invention prepares the catalyst of furfuryl alcohol, it is preferable that in step (1), the stream of ammonium hydroxide accelerates Degree is 0.2~1.0ml/min, and stream continues 15~60min of stirring after adding;In step (2), the stream of sodium hydroxide solution accelerates Degree is 3~8ml/min, and stream is passed through compressed gas time after adding is 1~3 hour.
Furfural hydrogenation according to the present invention prepares the catalyst of furfuryl alcohol, it is preferable that in step (1), in copper-bath Water and cupric sulfate pentahydrate mass ratio be 3.3~3.8:1;Water and hydroxide in step (2), in sodium hydroxide solution The mass ratio of sodium is 1.6~2.0:1.
The present invention is catalyst that active constituent obtains that furfural hydrogenation prepares furfuryl alcohol by carrier, copper oxide of calcium carbonate, Its production cost is substantially reduced, furfural high conversion rate, and hydrogenation selectivity is also high.Preferred technical solution according to the present invention, Using the calcium carbonate superfine powder of specified particle size range, furfural conversion ratio and hydrogenation selectivity can be further improved.Using the present invention Preparation method, the size distribution of adjustable copper oxide, to improve its catalytic activity.In addition, preparation method of the invention Cost it is low, product stability is good.
Specific embodiment
The present invention is further illustrated combined with specific embodiments below, but protection scope of the present invention is not limited to This.
In the present invention, partial size D50 indicates that the cumulative particle sizes percentile of a sample reaches corresponding when 50% Partial size.Partial size D90 indicates that the cumulative particle sizes percentile of a sample reaches partial size corresponding when 90%.
In the present invention, furfural is also referred to as 2 furan carboxyaldehyde, double with the carbon oxygen outside the carbon-carbon double bond and ring in ring Key (that is, carbonyl).It is to restore the C=O bond outside ring, and carbon-carbon double bond is not reduced then, is detailed in that furfural hydrogenation, which prepares furfuryl alcohol, Following formula.
<catalyst>
Furfural hydrogenation of the invention prepares the catalyst of furfuryl alcohol using calcium carbonate as carrier, using copper oxide as active constituent;Oxygen The weight for changing copper is 32wt%~75wt% of total catalyst weight.The present invention replaces silica with cheap calcium carbonate completely As carrier, the production cost of catalyst can be significantly reduced.According to the preferred embodiment of the present invention, the catalyst is not Contain silicon compound, rare earth compound and other transition metal in addition to copper.The example of silicon compound includes silica solution, water Glass etc..The example of other transition metal in addition to copper includes chromium, iron etc..
In the present invention, the partial size D50 of the calcium carbonate is 150~300nm, and partial size D90 is 150~700nm.As It is preferred that the partial size D50 of the calcium carbonate is 200~250nm, partial size D90 is 200~550nm.More preferably, described The partial size D50 of calcium carbonate is 210~230nm, and partial size D90 is 250~380nm.Above-mentioned partial size of the invention is all made of laser grain Degree instrument is measured.The size controlling of calcium carbonate in above range, can be further improved the reduction of C=O bond by the present invention Reaction, inhibits the reduction reaction of carbon-carbon double bond, and be conducive to the raising of catalytic activity.That is, being conducive to furfural so also Originally it is furfuryl alcohol, and improves its conversion ratio.
In the present invention, the weight of copper oxide be total catalyst weight 32wt%~75wt%, preferably 40wt%~ 70wt%, more preferably 48wt%~60wt%.Copper content control will be aoxidized in above range, can be lived not reducing catalyst Property in the case where, as much as possible reduction production cost.
In the present invention, the catalyst be graininess, granularity be 15~150 μm, preferably 15~100 μm, more Preferably 20~50 μm.Above-mentioned granularity is measured by the way of sieving.The granularity of catalyst is controlled can change in above range The furfural conversion ratio of kind catalyst, and improve furfuryl alcohol hydrogenation selectivity.
<preparation method>
The present invention also provides the preparation methods that above-mentioned furfural hydrogenation prepares the catalyst of furfuryl alcohol comprising following steps:
(1) under lasting stirring action, ammonia aqua stream is added in copper-bath to form mixed liquor;Wherein, described Calcium carbonate is dispersed in copper-bath;
(2) under lasting stirring action, by sodium hydroxide solution, gradually stream is added in the mixed liquor, and stream leads to after adding Enter compressed gas to escape ammonia, so that slurries are formed, the Cu in the slurries2+No more than 30ppm;
(3) filter cake is obtained after filtering the slurries that step (2) obtains, is dried up filter cake using compressed gas;
(4) by step (3) drying after filter cake use be washed to filtrate pH value be 7~8, then with compressed gas will washing after Filter cake drying;
(5) filter cake that step (4) obtains is heated to catalyst butt at 105~115 DEG C and is not less than 98wt%, then powder It is broken to get the catalyst.
Step (1) of the invention carries out under the action of lasting stirring, and mixing speed can be 110~300rpm, preferably For 120~150rpm.Calcium carbonate is dispersed in copper-bath of the invention.Calcium carbonate is added in copper-bath, ultrasound Wavelength-division dissipates or mechanical stirring, obtains the copper-bath for being dispersed with calcium carbonate.In above-mentioned mixed liquor, the partial size D50 of calcium carbonate It is 150~700nm for 150~300nm, partial size D90.Preferably, the partial size D50 of the calcium carbonate is 200~250nm, Partial size D90 is 200~550nm.More preferably, the partial size D50 of the calcium carbonate is 210~230nm, and partial size D90 is 250 ~380nm.Above-mentioned partial size of the invention is all made of laser particle analyzer and is measured.By the size controlling of calcium carbonate in above-mentioned model It encloses, can be further improved selectivity and conversion ratio that furfural is reduced to furfuryl alcohol.In copper-bath of the invention, Yi Wushui The copper-bath quality of copper sulfate and the mass ratio of calcium carbonate can be 0.05~25:1;Preferably 0.5~15:1;More Preferably 2~10:1.
In step (1) of the invention, ammonia aqua stream is added in copper-bath.Such adding manner, which can improve, urges The size distribution and dispersibility of copper oxide in agent product, and then improve its hydrogenation selectivity and conversion ratio.The stream of ammonium hydroxide adds Speed can be 0.2~1.0ml/min, preferably 0.3~0.8ml/min, more preferably 0.4~0.6ml/min.In ammonia aqua stream After adding, continue 15~60min of stirring, preferably 30~50min.The flow acceleration of ammonium hydroxide is controlled in above range, it can Copper oxide particle to be better dispersed on calcium carbonate carrier.
Ammonium hydroxide of the invention is the aqueous solution that ammonia is formed, and concentration is 13~18wt%.A tool according to the present invention Body embodiment, ammonia concn of the invention are 15.92wt%.In the present invention, the copper-bath in terms of cupric sulfate pentahydrate Quality and ammonium hydroxide mass ratio are 6~18:1;Preferably 8~17:1;More preferably 9~16:1.In step (1), copper sulphate The mass ratio of water and cupric sulfate pentahydrate in solution is 3.3~3.8:1, preferably 3.5~3.7:1.
Step (2) of the invention carries out under the action of lasting stirring, and mixing speed can be 110~300rpm, preferably For 120~150rpm.By sodium hydroxide solution, gradually stream is added in the mixed liquor, and stream is passed through compressed gas for ammonia after adding Gas evolution preferably all escapes ammonia, to form slurries.Cu in the slurries2+No more than 30ppm, preferably no greater than 15ppm.It can guarantee the copper ammonia complexation ion of reaction system lacking as far as possible in this way, and improve the dispersion of copper oxide in catalyst Property.The flow acceleration of sodium hydroxide solution can be 3~8ml/min, preferably 5~7ml/min.By the stream of sodium hydroxide solution Acceleration Control can obtain and copper oxide particle is better dispersed on calcium carbonate carrier in above range.After stream adds, The time for being passed through compressed gas is 1~3 hour, preferably 2~2.5 hours.
Copper-bath quality and sodium hydroxide mass ratio in step (2) of the invention, in terms of cupric sulfate pentahydrate For 5~6:1, preferably 5.1~5.6:1, more preferably 5.2~5.5:1.Sodium hydroxide of the invention is made in a manner of aqueous solution With above-mentioned mass ratio is cupric sulfate pentahydrate and sodium hydroxide mass ratio.Water and sodium hydroxide in sodium hydroxide solution Mass ratio is 1.6~2.0:1, preferably 1.8~1.9:1.
In step (3) of the invention, the slurries of step (2) are filtered, gained filtrate cycle is filtered, until filtrate is clear It is clear, gained filter cake is dried up using compressed gas.Compressed gas of the invention includes compressed air.Circulating filtration is until filtrate is clear Clear purpose is to save material, avoids wasting.
In step (4) of the invention, the filter cake after step (3) drying is used and is washed to filtrate pH value as 7~7.5, Preferably 7~7.2, then dried up the filter cake after washing with compressed gas.Compressed gas of the invention includes compressed air.
In step (5) of the invention, the filter cake that step (4) obtains is heated to catalyst butt not at 105~115 DEG C Less than 98wt%, then crush to get the catalyst.Heating temperature is preferably 108~112 DEG C.Heating time can be 30 ~60 hours, preferably 35~50 hours.The mode of crushing is not particularly limited, such as polishing etc..It is urged smashed Agent sieving, obtains granular catalyst prod.Catalyst of the invention can not need high-temperature roasting process, thus can be with Mass energy is saved, to further decrease production cost.
Raw material used in the following embodiment is described as follows:
Calcium carbonate: calcium carbonate superfine powder, the D50 for using laser particle analyzer to measure is 150nm, D90 350nm.
Copper-bath: the mass ratio of water and cupric sulfate pentahydrate is 3.57.
Ammonium hydroxide: concentration is the aqueous solution of 15.92wt%.
Sodium hydroxide solution: the mass ratio of water and sodium hydroxide is 1.89.
Waterglass: Na2The content of O is 8.684wt%;SiO2Content is 28.46wt%.
Test method in following embodiment is described as follows:
Using the granularity of Malvern company, Britain MS-2000 laser particle analyzer measurement nanometer calcium carbonate, nanometer calcium carbonate is come From Beijing Deco Dao Jin Science and Technology Ltd..Using the grain of Malvern company, Britain MS-2000 laser particle analyzer measurement catalyst Degree.
Embodiment 1
1.5kg calcium carbonate is dispersed in the copper-bath containing 2.8kg cupric sulfate pentahydrate of 12.8kg and forms mixing Then the mixed liquor is placed in container by liquid.356g ammonium hydroxide is added in separatory funnel, then according to the flow of 0.5ml/min, Ammonia aqua stream is added in the container for filling mixed liquor, the mixing speed during stream adds is 150rpm.After stream adds, continue to tie up Hold stirring 30min.According to the flow of 5ml/min, by 1.53kg sodium hydroxide solution, gradually stream is added in above-mentioned reaction system, stream Mixing speed during adding is 150rpm.After stream adds, continue to stir, while being passed through compressed air to container bottom, tie up 2h or so is held, to guarantee that ammonia all escapes, Cu in slurries2+≯30ppm.Filter tunnel, filtrate cycle is added in the slurries To after limpid, then with the dry filter cake of compressed air wind.Gained filter cake is repeated into washed several times with water, until filtrate pH=7, then with compressing Air dries up filter cake.Filter cake is poured out, 48 hours are heated at 110 DEG C to catalyst butt ≮ 98wt%.Resulting material is crushed To 38~48 μm, as catalyst P1.
The preparation process of embodiment 1 is repeated to catalyst P2, P3 secondary, then that obtain two batches.
Embodiment 2~3
Other than replacing with the material quality of addition shown in table 1, remaining step and condition are same as Example 1, Successively obtain catalyst Q and R.
Comparative example 1
By according to the formula in table 1, the copper-bath containing 2.8kg cupric sulfate pentahydrate of 12.8kg is placed in container.It will 4.44kg waterglass and 178g ammonium hydroxide are separately added into separatory funnel, then according to waterglass 10ml/min and ammonium hydroxide 0.44ml/ Waterglass and ammonium hydroxide are added in the container for filling mixed liquor the flow of min in a manner of bifilar cocurrent, flow stirring during adding Mixing speed is 150rpm.After stream adds, stirring 30min is continued to.According to the flow of 5ml/min, by 1.53g sodium hydroxide Gradually stream adds in above-mentioned reaction system solution, and the mixing speed during stream adds is 150rpm.After stream adds, continue to stir It mixes, while being passed through compressed air to container bottom, maintain 2h or so, to guarantee that ammonia all escapes, Cu in slurries2+≯30ppm。 The slurries are added filter tunnel, filtrate cycle is to after limpid, then with the dry filter cake of compressed air wind.Gained filter cake is repeated Washed several times with water, until filtrate pH value 7, then dried up filter cake with compressed air.Filter cake is poured out, 48 hours are heated at 110 DEG C to urging Agent butt ≮ 98wt%.Resulting material is crushed to 38~48 μm, as catalyst E.
Table 1
Experimental example
The catalyst of 15g Examples 1 to 3 and comparative example 1 is weighed respectively, and reaction kettle then is added together with 2580ml furfural In, it is reacted 1.5 hours under conditions of temperature is 220 DEG C, Hydrogen Vapor Pressure 3.5MPa, speed of agitator are 300 revs/min.Experiment As a result referring to table 2.
In embodiment 1, furfural conversion ratio, the furfuryl alcohol for the catalyst that different batches obtain are selectively close.This shows this The preparation method of invention can be stable with production performance furfuraldehyde hydrogenation catalyst.Examples 1 to 3 is compared with comparative example 1, furfuryl alcohol choosing Selecting property increases, and cost then substantially reduces.
Table 2
Present invention is not limited to the embodiments described above, without departing from the essence of the present invention, this field skill Any deformation, improvement, the replacement that art personnel are contemplated that each fall within the scope of the present invention.

Claims (7)

1. the preparation method that a kind of furfural hydrogenation prepares the catalyst of furfuryl alcohol, it is characterised in that:
The catalyst is using calcium carbonate as carrier, using copper oxide as active constituent;The weight of copper oxide is total catalyst weight 32wt%~75wt%;The catalyst without containing silicon compound, rare earth compound and in addition to copper other transition gold Belong to;The partial size D50 of the calcium carbonate is 150~300nm, and partial size D90 is 150~700nm;
It includes the following steps:
(1) under lasting stirring action, ammonia aqua stream is added in copper-bath to form mixed liquor;Wherein, the sulfuric acid Calcium carbonate is dispersed in copper solution;
(2) under lasting stirring action, by sodium hydroxide solution, gradually stream is added in the mixed liquor, and stream is passed through pressure after adding Contracting gas escapes ammonia, so that slurries are formed, the Cu in the slurries2+No more than 30ppm;
(3) filter cake is obtained after filtering the slurries that step (2) obtains, is dried up filter cake using compressed gas;
(4) filter cake after step (3) drying is used and is washed to filtrate pH value as 7~8, then with compressed gas by the filter after washing Cake drying;
(5) filter cake that step (4) obtains is heated to catalyst butt not less than 98wt% at 105~115 DEG C, then crushed, The catalyst of furfuryl alcohol is prepared up to the furfural hydrogenation.
2. preparation method according to claim 1, it is characterised in that:
In step (1), copper-bath quality and ammonium hydroxide mass ratio in terms of cupric sulfate pentahydrate are 6~18:1, mixing speed For 110~300rpm;
In step (2), copper-bath quality and sodium hydroxide mass ratio in terms of cupric sulfate pentahydrate are 5~6:1, stirring speed Degree is 110~300rpm;
In step (3), the slurries that step (2) is obtained are filtered, and gained filtrate cycle is filtered, until filtrate is limpid, using pressure Contracting gas dries up gained filter cake, and compressed gas therein is compressed air;
In step (4), the filter cake after step (3) drying use and is washed to filtrate pH value as 7~7.5, then with compressed gas general Filter cake drying after washing, compressed gas therein are compressed air;With
In step (5), heating temperature is 108~112 DEG C, and heating time is 30~60 hours.
3. preparation method according to claim 2, it is characterised in that:
In step (1), the flow acceleration of ammonium hydroxide is 0.2~1.0ml/min, and stream continues 15~60min of stirring after adding;With
In step (2), the flow acceleration of sodium hydroxide solution is 3~8ml/min, and stream is passed through the time of compressed gas after adding It is 1~3 hour.
4. preparation method according to claim 3, it is characterised in that:
In step (1), the mass ratio of water and cupric sulfate pentahydrate in copper-bath is 3.3~3.8:1;With
In step (2), the mass ratio of water and sodium hydroxide in sodium hydroxide solution is 1.6~2.0:1.
5. preparation method according to claim 1, which is characterized in that the weight of copper oxide is total catalyst weight 40wt%~70wt%.
6. preparation method according to claim 5, which is characterized in that the partial size D50 of the calcium carbonate be 200~ 250nm, partial size D90 are 200~550nm.
7. preparation method according to claim 5, which is characterized in that the catalyst is graininess, granularity 15 ~150 μm.
CN201710026173.4A 2017-01-13 2017-01-13 Furfural hydrogenation prepares catalyst of furfuryl alcohol and preparation method thereof Active CN106824239B (en)

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