CN108855093A - A kind of nickel-copper series hydrocatalyst and preparation method thereof - Google Patents

A kind of nickel-copper series hydrocatalyst and preparation method thereof Download PDF

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CN108855093A
CN108855093A CN201710338496.7A CN201710338496A CN108855093A CN 108855093 A CN108855093 A CN 108855093A CN 201710338496 A CN201710338496 A CN 201710338496A CN 108855093 A CN108855093 A CN 108855093A
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nickel
nickeliferous
preparation
catalyst
solution
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CN108855093B (en
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胡晓丽
郑云弟
潘曦竹
孙利民
马好文
王斌
展学成
钱颖
梁顺琴
常晓昕
谢培思
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China Petroleum and Natural Gas 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
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/74Iron group metals
    • B01J23/755Nickel
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/002Mixed oxides other than spinels, e.g. perovskite
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/76Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/78Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with alkali- or alkaline earth metals
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/76Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/83Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with rare earths or actinides
    • 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
    • B01J27/14Phosphorus; Compounds thereof
    • B01J27/185Phosphorus; Compounds thereof with iron group metals or platinum group metals
    • B01J27/1853Phosphorus; Compounds thereof with iron group metals or platinum group metals with iron, cobalt or nickel
    • B01J35/613
    • B01J35/615
    • B01J35/633
    • B01J35/635
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02Impregnation, coating or precipitation
    • B01J37/0201Impregnation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/08Heat treatment
    • B01J37/082Decomposition and pyrolysis
    • B01J37/088Decomposition of a metal salt
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/08Heat treatment
    • B01J37/10Heat treatment in the presence of water, e.g. steam
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2523/00Constitutive chemical elements of heterogeneous catalysts

Abstract

The present invention relates to a kind of nickel-copper series catalysts and preparation method thereof, and in particular to a kind of using nickeliferous aluminium oxide as the preparation method of the nickel-copper series hydrocatalyst of carrier.Containing active component nickel and copper, using nickeliferous aluminium oxide as carrier, the presoma of alumina carrier containing Ni is nickeliferous boehmite, there is acid-base neutralization and plastic process in the preparation process of the nickeliferous boehmite.Specific carrier is used in catalyst of the present invention, advantage is organically combine nickel and boehmite, it is effectively dispersed in active component nickel in boehmite, and form the alumina carrier containing Ni of specific crystal formation, there is preferable adjustment effect to the pore structure and acidity of carrier simultaneously, with merely using preparation catalyst compared with, have many advantages, such as that process is simple, while the easy modulation of carrier material performance.Nickel-copper hydrogenation catalyst hydrogenation activity and selectivity of the invention is high.

Description

A kind of nickel-copper series hydrocatalyst and preparation method thereof
Technical field
The present invention relates to a kind of nickel-copper series catalysts and preparation method thereof, and in particular to one kind is to carry with nickeliferous aluminium oxide The preparation method of the nickel-copper series hydrocatalyst of body.
Background technique
2016, go up within the world Ethylene cracker utilization of capacity continuous 4th year.Drippolene is as cracking of ethylene Important by-products account for about the 50%~80% of ethylene production capacity.How this part byproduct is made good use of, to the warp for improving enterprise Ji benefit will generate great influence.Meanwhile it is also various containing a large amount of diolefin, alkyl alkenyl arene, indenes etc. in drippolene The impurity such as unsaturated hydrocarbons and sulphur, nitrogen, oxygen, cause gasoline property unstable.It is industrial generally to be refined using two-stage hydrogenation, First hydrogen saturation chain conjugated alkene, cyclic conjugated alkene and styrene etc. are added through one section of Low Temperature Liquid;Again through two sections of high temperature gas phases Add hydrogen removal sulfur-bearing, nitrogen, the organic impurities of oxygen etc. and after being saturated monoolefin hydrogenation as aromatics extraction raw material produce benzene, toluene and Dimethylbenzene.Therefore, it is an important branch in field of hydrogenation by the hydrogen addition technology of core of pyrolysis gasoline hydrogenation catalyst, is steaming There is very important status in the post-processing of vapour cracking ethylene preparation.Currently used one-stage hydrogenation catalyst is roughly divided into two Class, a kind of active component are nickel non-precious metal catalysts;Another kind of active component is catalyst used in noble metal.Your non-gold Because the factors such as architectural difference and tenor height have, certain anti-impurity and water-resistant capacity, price advantage also compare metal catalyst Significantly.Therefore non-precious metal catalyst industrialization product is gradually replacing noble metal catalyst to be applied to pyrolysis product and is adding hydrogen system Column catalyst.
CN1218822A reports a kind of Ni/Al2O3Suitable for the selective hydrocatalyst of pyrolysis gasoline cut fraction, this is urged Agent is by nickel load in obtained on the alumina support containing lithium or alkaline-earth metal, this catalyst is bearing plus hydrogen load and adding It is not good enough in terms of stabilized hydrogen.
IT1312334 discloses a kind of selective hydrocatalyst for the alkadienes selective hydrogenation in distillate, packet Aluminium oxide, nickel oxide content 5~25%, lithium or alkaline earth metal content 0.1~2.0% are included, is that nickel load is being contained into lithium or alkali On the aluminium oxide of earth metal.
CN101954282A is related to a kind of Hydrobon catalyst and preparation method thereof, with molybdenum, nickel, zinc, copper composite metal Oxide at least two is active component, and addition Si, Ti, Ca, Ce, Mg, P oxide at least one is auxiliary agent, and surplus is oxidation Aluminium.On the basis of catalyst quality, wherein active component mass percentage is 5~15%, and auxiliary agent oxide mass percentage contains Amount is 0.2~25%, and aluminium oxide is surplus.Hydrodesulfurization, but hydrodesulfurization less effective are used under high temperature.
US3472763 reports a kind of diene selective hydrogenation catalyst, active component Ni content 1~20%, auxiliary agent MoO3Content 1~5%, auxiliary agent alkali metal and alkaline earth metal content 1~5%, catalyst pores, which are held, is greater than 0.4ml/g, and specific surface is big In 30m2/ g, this catalyst are to impregnate Al by the aqueous solution of active component and auxiliary agent2O3Carrier is made.
Hydrated alumina such as boehmite and boehmite etc. are widely used as the raw material for preparing alumina support, Although in carrying alumina production procedure can using as the methods of pH value swing method, the organic expanding agent of addition, hydro-thermal process come Improve the property of the aluminium oxide as carrier, but the aluminium oxide of catalyst carrier for hydrgenating material is improved by these methods Performance is limited.The property for preparing aqua oxidation aluminum feedstock used in alumina support is to produce excellent properties carrying alumina One of body most critical factor.
CN1123392C describes a kind of alumina carrier containing Ni and preparation method thereof, by alkali-treated nickeliferous chemical combination The mixture of object and carbon black and aluminum hydroxide solid elastomer powder kneading, being made a kind of through extruded moulding and drying, roasting nickeliferous is 2.0%~14.0% alumina support, it is 0.4cm which, which holds,3/ g~1.0cm3/ g, specific surface area 160m2/ g~ 420m2/ g, average pore size are 8.0nm~15.0nm, account for the 85% more of its total hole greater than the ratio in the hole 6.0nm, Kong Rong, average Aperture is larger, and macropore proportion is more, is particularly suitable for the carrier as hydrorefining catalyst for heavy oil.
CN200710179630.X discloses a kind of preparation method of nickel-coated alumina powder, it is characterised in that will be added and divide Suspension is made in the mixed liquor of the nano aluminium oxide of powder, is added with stirring nickel salt solution, after mixing evenly, drips in mixed liquor Enter ammonium hydroxide, add distilled water, obtains navy blue nickel amine complex ([Ni (NH3)6]2+)-Aluminium oxide mixed solution C, using water Heat ageing is filtered, washed, dries, and obtains coating product among green;Roasting is restored again, the oxidation of black nickel coated is obtained Aluminium powder body.
CN1102862C discloses a kind of nickel-containing hydrogenationcatalysts, contains:In terms of nickel oxide, the nickel of 65-80%, with dioxy SiClx meter, the silicon of 10-25%, in terms of zirconium oxide, the zirconium of 2-10%, in terms of aluminium oxide, the aluminium of 0-10%, precondition is two The sum of content of silica and aluminium oxide is at least 15% (weight %, based on the total weight of catalyst), this catalyst It is by the way that by nickel, zirconium, if necessary, there are also the acidic aqueous solutions of the salt of aluminium to be added to silicon, if necessary, there are also the compounds of aluminium Alkaline aqueous solution or suspension in, so that the pH of the mixture so obtained is reduced at least 6.5, then by further adding Alkaline solution adjusts pH value to 7-8, separates the solid so deposited, dries, forms and is sintered.Furthermore it also discloses Prepare catalyst method and its in preparation medicinal white oils, high-purity medical paraffin and low boiling point low arene content or be free of The method of the hydrocarbon mixture of aromatic hydrocarbons.The preparation method of the catalyst is commonly used to prepare high-activity component content catalyst, still The catalyst activity prepared using this method is poor.
Article " the changes induced by calcination temperature in of Agudo A L etc. hydrodesulfurization activity of NiCo-Mo/Al2O3Catalysis, Applied Catalysis, 1987,30:185-188 " has investigated maturing temperature to NiCoMo/A12O3The active influence of catalyst rhohene desulfiirization.As a result table Bright, the desulphurizing activated of the catalyst activated at 500 DEG C is significantly higher than the catalyst activated under the conditions of 600 DEG C, this is because In 600 DEG C of activation, strong interaction generation spinel structure occurs for metal and alumina support so as to cause catalysis in catalyst Agent activity is remarkably decreased.Activation temperature is higher, and the nickel aluminate phase content of generation is higher, and the activity decline of catalyst is brighter It is aobvious."Influence of support-interaction on the sulfidation behavior and hydrodesulfurization activity of Al2O3Support W, CoW and NiW model catalysts, J PhysChem B, 2002,106:5897-5906 " equally obtains similar conclusion.Since nickel and alumina support are in high-temperature roasting Strong interaction can occur in the process and generate spinel structure, be remarkably decreased so as to cause catalyst activity, therefore roasted in high temperature It is all as prudent using the two as possible before burning, avoid the generation of spinel structure.It is different from other metals, it is rare nickeliferous to intend thin water Aluminium stone report generally requires to carry out high-temperature roasting when because preparing catalyst carrier with it.
The catalyst with higher hydrogenation activity is prepared, corresponding active metal component content also wants high.Simple answers Hydrotreating catalyst is prepared with infusion process, the solution for needing to prepare high activity metal constituent content carries out dipping system to carrier ?.Therefore there are the following problems in dipping process:(1) since the water absorption rate of carrier is certain, using incipient impregnation method Maceration extract given volume, active metal component additional amount is excessively high to will lead to dissolution not exclusively;(2) it prepares in catalyst process and needs Repeatedly dipping active component, twice, three times even four times could be by the activity component impregnation to carrier of certain content, this just makes At preparation section the problems such as cumbersome, long preparation period, loss of active component;(3) it is repeatedly generally required during dipping Organic or inorganic dispersing agent is added in maceration extract to increase the dispersion degree of active metal component, but these meetings in last handling process There are problems that removing.
In the preparation process of catalyst carrier, the compound containing active metal component is introduced in the form of kneading, Make the compound for containing a certain amount of active metal component in shaping carrier, reduces the catalysis of high-content active metal component to reach The problem of load difficulty encountered in agent preparation process.But by active metallic compound by way of kneading method is using kneading With aluminum hydroxide solid elastomer powder or the direct mixed-forming of alumina powder, there are crystal grain to mix uneven and catalyst strength for this method The problems such as variation, while being also not easy to combine between simple kneading each component and forming specific skeleton structure.
Summary of the invention
The purpose of the present invention is to provide a kind of New Nickel-copper system hydrogenation catalysts and preparation method thereof, are suitable for higher The preparation requirement of active metal component content catalyst.
Nickel-copper hydrogenation catalyst of the invention contains active component nickel and copper, using nickeliferous aluminium oxide as carrier, with catalyst Total weight is 100% meter, contains 10~20wt% of nickel oxide (preferably 14.5~18.5wt%), 0.01~5wt% of copper oxide (preferably 0.05~3wt%), 0~5wt% of cerium oxide and/or lanthana (preferably 0.2~1.8wt%), alkali metal and/or 0~6wt% of alkaline earth oxide (preferably 0.5~3wt%);50~180m of specific surface area of catalyst2/ g, hole appearance 0.30~ 0.60ml/g, 0.5~1.1g/cm of heap density3.The presoma of alumina carrier containing Ni is nickeliferous boehmite, can be by nickel Organically combine with boehmite, while the nickeliferous boehmite and carrier prepared therefrom have suitable aperture Distribution.
Carrier in nickel-copper series hydrocatalyst of the invention is nickeliferous aluminium oxide, needs to prepare first and nickeliferous intends thin water Aluminium stone, the i.e. presoma of alumina carrier containing Ni are nickeliferous boehmites, be not boehmite and nickel compound containing or The simple physical of nickel salt solution blends or cladding, but acid-base reaction occurs, and has plastic process, and final be made has specific nickel With the carrier of aluminium mixing crystalline form.Only in this way nickel and boehmite can organically be combined, preferably this is nickeliferous quasi- Boehmite and carrier prepared therefrom also have suitable pore-size distribution.
Nickeliferous boehmite is through alumina carrier containing Ni obtained from molding, drying, roasting.Depending on finally containing in the present invention Nickel alumina support is different using purpose, the preparation method of nickeliferous boehmite, nickel source, nickel content, alumina carrier containing Ni Preparation method, calcination for activation temperature etc. can be different.
The presoma of alumina carrier containing Ni of the present invention, that is, nickeliferous boehmite preferably (intends thin water with nickeliferous Aluminium stone total weight is 100wt% meter), 0.1~10wt% of nickel content, preferably 0.5~5wt%;300~420m of specific surface area2/ g, Hole holds 0.7~1.2cm3/ g, 5~10nm of aperture;The nickeliferous boehmite has acid-base neutralization and plastic mistake during the preparation process Journey.
Alumina carrier containing Ni used in catalyst in the present invention, is preferably formed by nickeliferous boehmite, is roasted And obtain, contain δ-Al2O3、δ-NiAl26O40And NiAl2O4Crystal form, and 0.45≤B1/B2≤0.85 in XRD spectra, B1 refer to The integrated intensity at the peak that 2 θ are 34.2~39.8 ° in XRD spectra, B2 refer to the product at the peak that 2 θ are 43.3~48.5 ° in XRD spectra Divide intensity.
In the present invention in alumina carrier containing Ni used in catalyst, contain δ-Al2O3、δ-NiAl26O40And NiAl2O4It is brilliant The mixed crystal of type, best δ-Al2O3、δ-NiAl26O40And NiAl2O4Account for 30~100wt% of alumina carrier containing Ni total weight.It removes Contain δ-Al2O3、δ-NiAl26O40And NiAl2O4Outside the mixed crystal of crystal form, θ-Al can be also contained in carrier2O3、α-Al2O3And/or γ-Al2O3, best α-Al2O3Content is lower than 30wt%.
It is different using purpose that final catalyst is regarded in the present invention, the preparation method of nickeliferous boehmite, nickel source, nickel contain Amount, alumina carrier containing Ni calcination for activation temperature etc. can be different.Best nickel content is in alumina carrier containing Ni of the invention 0.1~10wt%, preferably 0.5~5wt%.25~250m of specific surface area20.15~0.85cm of/g, Kong Rongwei3/ g, aperture be 8~ 40nm。
Active component nickel and copper in the present invention, nickel source are selected from one kind or several of nickel nitrate, nickel acetate, nickel chloride or nickel sulfate Kind, preferably nickel nitrate, nickel acetate.Copper is preferably added in the form of copper nitrate or basic copper carbonate.The present invention is to catalyst Preparation method does not limit in detail, and equi-volume impregnating preparation such as can be used, and nickeliferous and copper soluble-salt aqueous solution is impregnated In on carrier, 3~8h is roasted at 300~500 DEG C after dry.By total catalyst weight for 100wt% in terms of, nickel contains in catalyst Amount is calculated as with oxide:10~20wt% of nickel oxide (preferably 14.5~18.5wt%), 0.01~5wt% of copper oxide are (best It is 0.05~3wt%).
Rare-earth element cerium and/or lanthanum (existing in the form of an oxide), content 0 can be contained in catalyst of the present invention ~5wt%, preferably 0.2~1.8wt%.After cerium and/or lanthanum is added, catalyst carrier crystal grain is long when being able to suppress high-temperature roasting Greatly, the dispersion degree for improving active component nickel improves the hydrogenation selectivity and stability of catalyst.Cerium and/or lanthanum be most in the present invention It is to be added in the form of soluble nitrate well.
Alkali metal and/or alkaline-earth metal (existing in the form of an oxide) can also be contained in catalyst of the present invention, contained Amount is 0~6wt%, preferably 0.5~3wt%.Alkali metal and/or alkaline-earth metal are one in Li, Na, K, Ca, Mg, Sr, Be In or a variety of, preferably one or both of Li, Mg.It, can be to catalyst carrier table by addition alkali metal and/or alkaline-earth metal The acid-base property in face plays adjustment effect, can improve hydrogenation activity and stabilized hydrogenation by adjusting catalyst surface acid-base property, have Conducive to carbonaceous, the deposition of colloid in hydrogenation process is reduced, to extend the service life of catalyst.In the present invention alkali metal and/ Or alkaline-earth metal is preferably to be added in the form of soluble nitrate, acetate or citrate.
Rare-earth element cerium and/or lanthanum and alkali metal and/or alkaline-earth metal can be added in carrier forming process;? It can be added in advance into carrier before dipping active constituent after carrier molding;It can also be when impregnating active constituent, with Active constituent dipping solution is added simultaneously.
The present invention also provides a kind of preparation method of more specific nickel-copper series hydrocatalyst, with nickeliferous and copper molten Liquid impregnates alumina carrier containing Ni by one or more steps, obtains catalyst by drying, roasting;Alumina carrier containing Ni is by containing Nickel boehmite through molding, drying, roasting and obtain;Wherein nickeliferous boehmite is preferably obtained by following methods, specifically Process includes the following steps:
(1) it neutralizes in kettle and bottom water is added, bottom water is deionized water, is heated to 50~90 DEG C;
(2) acid aluminum saline solution, acid nickel salt aqueous solution are prepared respectively, by acid aluminium salt aqueous solution and acid nickel salt water Solution is uniformly mixed, and obtains the acidic aqueous solution of aluminium containing salt and nickel salt, and adjusting mixed solution temperature is 50~90 DEG C, wherein acid Aluminum saline solution concentration is preferably 10~80g Al2O3/ L, acid nickel salt aqueous solution concentration is preferably 3~50gNiO/L;
(3) alkali metal aluminate solution is prepared, alkali metal aluminate solution concentration is preferably 50~300gAl2O3/L;
(4) (2) and (3) cocurrent are added in (1), constant ventilation stirring;
(5) 50~90 DEG C of gelling temperature of rate-determining steps (4), plastic pH value 7~10;
(6) it after cemented into bundles, through aging, is filtered, washed, dries nickeliferous boehmite is made.
Tank bottom can be passed through air in the preparation method step (1);Step (5) plastic pH value preferably 7~9.
Preferably 50~70 DEG C of temperature described in step (1) in preparation method of the present invention;Step (2) described temperature preferably 50~ 70 DEG C, stablize 3~5min.Solution temperature is being just in acid aluminium salt and nickel salt mixed solution, alkali metal aluminate solution and plastic cans For subzero temperature difference preferably no more than 3 DEG C, three's temperature is preferably identical.
The pH value of alkali metal aluminate solution is 9~14 in step (3) in preparation method of the present invention, preferable ph 12~ 14。
In preparation method of the present invention in step (5), preferably 50~70 DEG C of gelling temperature;Plastic pH value preferably 7.5~9.5.
The raw material of industry can be used in aluminium salt described in the preparation method of nickeliferous boehmite and nickel salt.The acidity Aluminum saline solution can be the mixed solution of one or more of aluminium chloride, aluminum sulfate and aluminum nitrate, preferably sulfuric acid aluminum solutions. The mixing that the acid nickel salt aqueous solution can be one or more of nickel chloride, nickel sulfate, nickelous bromide and nickel nitrate is molten Liquid, preferably nickel nitrate solution.Acid aluminium salt and acid nickel salt solution mixing, obtain the acidic aqueous solution of aluminium containing salt and nickel salt, PH Value is 2~5, preferable ph 2~4.The alkali metal aluminate solution refers to sodium metaaluminate or potassium metaaluminate solution.
The aging of step (6) described material refers to the solution after making plastic under continuing ventilation stirring or stationary state one Kept for certain time at fixed temperature and pH value.Wherein aging temperature is 50~80 DEG C, and ageing time is 10~60min.
The mode of washing of step (6) described material is common sense well known to those skilled in the art, can add water using when filtering Washing, mashing washing the modes such as wash using lower alcohols, control 40~80 DEG C of temperature when washing, pH value 4~8, wash time For 20~40min, washing times are 2~5 times.
Drying mode described in step (6) can using oven drying, spray drying, mesh-belt kiln drying, fluidized bed drying, Natural drying, microwave drying etc., drying temperature are 70~150 DEG C, drying time 2~for 24 hours, and it is segmented preferably with different temperatures dry It is dry.The nickeliferous boehmite of the present invention before shaping, can according to need and peptizing agent, extrusion aid and aluminum oxide dry glue powder is added One or more of, the substance and additional amount specifically used can have knowledge by this field and be determined.For example, the glue Solvent can one or more of for nitric acid, phosphoric acid, hydrochloric acid and sulfuric acid, additional amount be need molded samples total weight 3~ 10wt%;The extrusion aid can be sesbania powder etc., and dosage is generally the 2~6wt% for needing molded samples total weight;The oxygen Change aluminium dry glue powder to be made using conventional method, but additional amount is preferably lower than the 10wt% of nickeliferous boehmite gross mass.
The method of roasting and condition are that catalyst carrier roasts common method and condition, can be used vertical heater, converter and Mesh-belt kiln is roasted, and the roasting condition of the carrier is:800~1200 DEG C of 4~10h of roasting, maturing temperature preferably 850~ 1100℃.This maturing temperature refers to the carrier the final shaping maturing temperature before catalyst dipping active component.In this temperature Before roasting, carrier may be prepared by low-temperature bake, but be middle transition calcination steps.
Preparation method of the present invention is to impregnate alumina carrier containing Ni by one or more steps with nickeliferous and copper solution, by Catalyst is made in dry, roasting;Its roasting condition is:3~8h is roasted at 300~500 DEG C.
Catalyst of the invention before the use, preferably at 380~450 DEG C with 6~16h of hydrogen reducing, it is of the invention plus Hydrogen catalyst is the reaction of monoolefine especially suitable for diolefin hydrogenate.
Specific carrier is used in catalyst of the present invention, advantage is organically combine nickel and boehmite Come, is effectively dispersed in active component nickel in boehmite, and form the alumina carrier containing Ni of specific crystal formation, while to load The pore structure and acidity of body have preferable adjustment effect, and final catalyst obtained hydrogenation activity with higher.With It is compared using preparation catalyst merely, has many advantages, such as that process is simple, while the easy modulation of carrier material performance.
In the preparation process of catalyst used carrier precursor, the compound containing active component is first introduced, is made obtained The compound for containing a certain amount of active metal component in carrier, will be greatly reduced greater activity metal component content catalyst Prepare difficulty.On the basis of guaranteeing catalyst performance, achieve the purpose that simplified catalyst preparation process, optimization preparation process. Nickel-copper hydrogenation catalyst hydrogenation activity and selectivity of the invention is high.
Specific embodiment
Nickel and copper content are measured using atom absorption method in nickel-copper hydrogenation catalyst in the present invention;Using Germany The crystal form of D8Advance type x-ray powder diffraction instrument (XRD) the measurement carrier of Bruker company production, actual conditions:CuK α spoke It penetrates, 40 kilovolts, 40 milliamperes, 0.02 ° of scanning speed/step, 0.5 second/step, B1 refers to the peak that 2 θ are 34.2~39.8 ° in XRD spectra Integrated intensity, B2 refers to that 2 θ in XRD spectra are the integrated intensity at 43.3~48.5 ° of peak.
Analysis method:
Oil distillation:It is measured using oil product test method SYB-2110-60;
Bromine valency:Using SH/T0236-92 standard test;
Diene:Using SH/T0714-2002 standard test;
Specific surface:Using 19587 standard test of GB/T;
Kong Rong, aperture and pore-size distribution:GB/T 21650.2-2008 standard test;
Water content:Using GB/T 11133-89 standard test;
Sulfur content:It is measured using WK-2B microcoulomb instrument;
Nitrogen content:It is measured using KY-3000N chemiluminescence azotometer;
Arsenic content:It is measured using DV-4300 Atomic Emission Spectrometer AES.
The present invention is further illustrated below by embodiment, but is not regarded as that present invention is limited only by this.
Embodiment 1
(1) nickeliferous boehmite
It is 50g Al by 4L concentration2O3The sodium aluminate solution of/L is placed in belt stirrer and tank bottom can be passed through the stainless of gas In steel container, the nickel nitrate solution that 1L concentration is 8.95g NiO/L is packed into the container of high level, and lower even peristaltic pump carries out flow velocity Control.It is passed through the mixed gas of carbon dioxide and air, while prepared nickel nitrate solution is added dropwise, titanium dioxide in mixed gas Concentration of carbon is 65v%, flow 4Nm3/h.40 DEG C of reaction temperature, reaction end pH value 9.8, stopping is passed through carbon dioxide, aging 30 Minute, it is separated by filtration mother liquor, is washed.In 110 DEG C of dry 5h, nickeliferous boehmite is made.
(2) nickeliferous carrier
The nickeliferous boehmite for weighing preparation, with nitric acid, phosphoric acid, sesbania powder and water mixer kneader at plastic, extrusion Molding, then obtains nickeliferous carrier in 120 DEG C of dry 4h, 960 DEG C of roasting 4h.
(3) catalyst
Maceration extract is made in nickel acetate, copper nitrate, cerous nitrate co-dissolve in water, is impregnated into the 100g prepared in (2) On carrier, 120 DEG C of drying, 480 DEG C of roasting 3h obtain catalyst C1.
Comparative example 1
(1) boehmite
It is 50g Al by 4L concentration2O3The sodium aluminate solution of/L is placed in belt stirrer and tank bottom can be passed through the stainless of gas In steel container, it is passed through the mixed gas of carbon dioxide and air, carbon dioxide in gas mixture concentration is 60v%, flow 4Nm3/ h.35 DEG C of reaction temperature, reaction end pH value 10, stopping is passed through carbon dioxide, aging 35 minutes, is separated by filtration mother liquor, washs. 120 DEG C of dry 4h, obtain boehmite.
(2) carrier
The boehmite for weighing preparation, with nitric acid, phosphoric acid, sesbania powder and water mixer kneader at plastic, extruded moulding, Then in 120 DEG C of dry 4h, 970 DEG C of roasting 4h, carrier is made.
(3) catalyst
Maceration extract is made in nickel nitrate, copper nitrate, cerous nitrate co-dissolve in water, is impregnated into the 100g prepared in (2) On carrier, 120 DEG C of drying, 410 DEG C of roasting 3h obtain catalyst D1.
Embodiment 2
(1) nickeliferous boehmite
It is 50g Al by 4L concentration2O3The sodium aluminate solution of/L is placed in belt stirrer and tank bottom can be passed through the stainless of gas In steel container, the nickel nitrate solution that 1L concentration is 10g NiO/L is packed into the container of high level, and lower even peristaltic pump carries out flow velocity control System.It is passed through the mixed gas of carbon dioxide and air, while prepared nickel nitrate solution, carbon dioxide in gas mixture is added dropwise Concentration is 70v%, flow 3Nm3/h.35 DEG C of reaction temperature, reaction end pH value 9.5, stopping is passed through carbon dioxide, and aging 45 divides Clock is separated by filtration mother liquor, washing.110 DEG C of dry 3h, are made nickeliferous boehmite.
(2) nickeliferous carrier
The nickeliferous boehmite for weighing preparation, with nitric acid, phosphoric acid, citric acid, sesbania powder and water mixer kneader at plastic Then body, extruded moulding obtain nickeliferous precursor carrier in 120 DEG C of dry 4h, 620 DEG C of roasting 4h.Prepare lithium carbonate and citric acid Aqueous solution is impregnated into nickeliferous precursor carrier using equi-volume impregnating, is contained in 120 DEG C of dry 4h, 1000 DEG C of roasting 4h The carrier of nickel and lithium.
(3) catalyst
Using two step preparation catalysts.The first step, nickel nitrate, basic copper carbonate and ammonium hydroxide is soluble in water that leaching is made Stain liquid is impregnated on the 100g carrier prepared in (2) using equi-volume impregnating, and the 60% of dipping nickel nitrate total amount.120 DEG C of bakings Dry, 350 DEG C of roasting 4h, second step is using the 35% of equi-volume impregnating dipping nickel nitrate total amount, and 120 DEG C of drying, 380 DEG C roast 4h obtains catalyst C2.
Embodiment 3
(1) nickeliferous boehmite
It is 50g Al by 4L concentration2O3The sodium aluminate solution of/L is placed in belt stirrer and tank bottom can be passed through the stainless of gas In steel container, the nickel nitrate solution that 1L concentration is 3g NiO/L is packed into the container of high level, and lower even peristaltic pump carries out flow velocity control System.It is passed through the mixed gas of carbon dioxide and air, while prepared nickel nitrate solution, carbon dioxide in gas mixture is added dropwise Concentration is 60v%, flow 5Nm3/h.30 DEG C of reaction temperature, reaction end pH value 10, stopping is passed through carbon dioxide, and aging 40 divides Clock is separated by filtration mother liquor, and nickeliferous boehmite is made in 100 DEG C of dry 2h, 120 DEG C of dry 2h in washing.
(2) nickeliferous carrier
The nickeliferous boehmite for weighing preparation, mixes with magnesium nitrate, lithium carbonate, nitric acid, citric acid, sesbania powder and water and pinches Plastic is synthesized, then extruded moulding obtains the carrier of nickeliferous, magnesium and lithium in 120 DEG C of dry 4h, 910 DEG C of roasting 4h.
(3) catalyst
By nickel nitrate, nickel nitrate is soluble in water that maceration extract is made, and is impregnated into preparation in (2) using two step equi-volume impregnatings 100g carrier on, a step using equi-volume impregnating dipping nickel nitrate total amount 65%, 120 DEG C drying, 350 DEG C of roasting 4h, For second step using the 35% of equi-volume impregnating dipping nickel nitrate total amount, 120 DEG C of drying, 380 DEG C of roasting 4h obtain catalyst C3。
Embodiment 4
(1) nickeliferous boehmite
It is 30g Al by 2L concentration2O3The nickel nitrate solution mixing that the aluminum sulfate solution and 1L concentration of/L is 12gNiO/L is equal In the even container for being packed into high level, compound concentration is 50g Al2O3/ L sodium aluminate solution 3L is packed into the container of high level, and two Connect the stainless steel that peristaltic pump progress flow control inflow is equipped with the belt stirrer of 2L bottom water and tank bottom can be passed through gas under container to hold In device, 56 DEG C of reaction temperature, it is 9.3 that control flow, which adjusts reacting system PH value, is by the way that ammonium hydroxide adjusting slurry pH value is added dropwise 9.5, aging 30 minutes, are separated by filtration mother liquor after reaction, and nickeliferous boehmite is made in washing, 120 DEG C of dry 2h.
(2) nickeliferous carrier
The nickeliferous boehmite for weighing preparation is squeezed with nitric acid, citric acid, sesbania powder and water mixer kneader at plastic Item molding, then obtains alumina carrier containing Ni precursor in 120 DEG C of dry 4h, 600 DEG C of roasting 4h.Prepare lanthanum nitrate, lithium carbonate And aqueous citric acid solution, it is impregnated into nickeliferous precursor carrier using equi-volume impregnating, in 120 DEG C of dry 4h, 980 DEG C of roastings 4h obtains the carrier of nickeliferous, lanthanum and lithium.
(3) catalyst
By nickel nitrate, copper nitrate is soluble in water that maceration extract is made, and is impregnated into using equi-volume impregnating and to be prepared in (2) On 100g carrier, 120 DEG C of drying, 380 DEG C of roasting 4h obtain catalyst C4.
Embodiment 5
(1) nickeliferous boehmite
It is 30g Al by 2L concentration2O3The nickel nitrate solution mixing that the aluminum sulfate solution and 1L concentration of/L is 6g NiO/L is equal In the even container for being packed into high level, compound concentration is 50g Al2O3//L sodium aluminate solution 3L is packed into the container of high level, and two Connect the stainless steel that peristaltic pump progress flow control inflow is equipped with the belt stirrer of 2L bottom water and tank bottom can be passed through gas under container to hold In device, 60 DEG C of reaction temperature, it is 9 that control flow, which adjusts reacting system PH value, is 9.8 by the way that ammonium hydroxide is added dropwise to adjust plasm PH value, Aging 25 minutes after reaction are separated by filtration mother liquor, washing.120 DEG C of dry 4h, are made nickeliferous boehmite.
(2) nickeliferous carrier
The nickeliferous boehmite for weighing preparation, with nitric acid, phosphoric acid, citric acid, sesbania powder and water mixer kneader at plastic Then body, extruded moulding obtain nickeliferous carrier in 120 DEG C of dry 4h, 1020 DEG C of roasting 4h.
(3) catalyst
It is impregnated on the 100g carrier prepared in (2) using two step equi-volume impregnatings, a step is made into total nickel content 50% Nickel nitrate solution impregnated carrier, 120 DEG C of drying, 350 DEG C of roasting 4h, second step is molten by nickel acetate, basic copper carbonate and ammonium hydroxide Maceration extract is made in Yu Shuizhong, and the nickel content of residue 50%, 120 DEG C of drying is added, and 380 DEG C of roasting 4h obtain catalyst C5.
Embodiment 6
(1) nickeliferous boehmite
It is 25g Al by 2L concentration2O3The nickel nitrate solution mixing that the aluminum sulfate solution and 1L concentration of/L is 25gNiO/L is equal In the even container for being packed into high level, compound concentration is 50g Al2O3/ L sodium aluminate solution 3L is packed into the container of high level, and two Connect the stainless steel that peristaltic pump progress flow control inflow is equipped with the belt stirrer of 2L bottom water and tank bottom can be passed through gas under container to hold In device, 65 DEG C of reaction temperature, it is 9.0 that control flow, which adjusts reacting system PH value, is by the way that ammonium hydroxide adjusting slurry pH value is added dropwise 9.5, aging 20 minutes, are separated by filtration mother liquor after reaction, washing.In 120 DEG C of dry 4h, nickeliferous boehmite is made.
(2) nickeliferous carrier
The nickeliferous boehmite for weighing preparation, with magnesium nitrate, nitric acid, citric acid, sesbania powder and water mixer kneader at can Then plastomer, extruded moulding obtain nickeliferous precursor carrier in 120 DEG C of dry 4h, 550 DEG C of roasting 4h.Prepare lanthanum nitrate, carbonic acid Lithium and aqueous citric acid solution are impregnated into nickeliferous precursor carrier using equi-volume impregnating, in 120 DEG C of dry 4h, 950 DEG C of roastings 4h obtains the carrier of nickeliferous, magnesium, lanthanum and lithium.
(3) catalyst
Using two step preparation catalysts.The first step, nickel acetate, basic copper carbonate and ammonium hydroxide is soluble in water that leaching is made Stain liquid is impregnated on the 100g carrier prepared in (2) using equi-volume impregnating, and the 40% of dipping nickel nitrate total amount.120 DEG C of bakings Dry, 360 DEG C of roasting 4h, second step is using the 60% of equi-volume impregnating dipping nickel nitrate total amount, and 120 DEG C of drying, 400 DEG C roast 4h obtains catalyst C6.
Comparative example 2
(1) boehmite
It is 30g Al by 2L concentration2O3The aluminum sulfate solution and 3L concentration of/L is 60g Al2O3/ L sodium aluminate solution difference It is packed into the container of high level, peristaltic pump is connected under two containers and carries out belt stirrer and tank bottom that flow control inflow is equipped with 2L bottom water It can be passed through in the rustless steel container of gas, 50 DEG C of reaction temperature, it is 9 that control flow, which adjusts pH value of reaction system, by the way that ammonia is added dropwise It is 9.5 that water, which adjusts slurry pH value, and aging 30 minutes, are separated by filtration mother liquor after reaction, washing.120 DEG C of dry 5h, must intend thin Diaspore.
(2) carrier
The boehmite for weighing preparation, with magnesium nitrate, nitric acid, citric acid, sesbania powder and water mixer kneader at plastic, Precursor carrier is made then in 120 DEG C of dry 4h, 550 DEG C of roasting 4h in extruded moulding.Prepare lanthanum nitrate, lithium carbonate and citric acid Aqueous solution is impregnated into precursor carrier using equi-volume impregnating, in 120 DEG C of dry 4h, 920 DEG C of roasting 4h, is obtained containing magnesium, lanthanum With the carrier of lithium.
(3) catalyst
Using two step preparation catalysts.The first step, nickel acetate, basic copper carbonate and ammonium hydroxide is soluble in water that leaching is made Stain liquid is impregnated on the 100g carrier prepared in (2) using equi-volume impregnating, and the 40% of dipping nickel nitrate total amount.120 DEG C of bakings Dry, 350 DEG C of roasting 4h, two steps are using the 60% of equi-volume impregnating dipping nickel nitrate total amount, and 120 DEG C of drying, 420 DEG C roast 4h obtains catalyst D2.
Embodiment 7
(1) nickeliferous boehmite
It is 50g Al by 4L concentration2O3The sodium aluminate solution of/L is placed in belt stirrer and tank bottom can be passed through the stainless of gas In steel container, it is passed through the mixed gas of carbon dioxide and air, carbon dioxide in gas mixture concentration is 60v%, flow 4Nm3/ h.35 DEG C of reaction temperature, reaction end pH value 10, stopping is passed through carbon dioxide.Under blowing air stirring condition, 0.5L concentration is added It is 9.5 by the way that ammonium hydroxide is added dropwise to adjust plasm PH value, after reaction after stablizing 30 minutes for the nickel nitrate solution of 24gNiO/L Aging 30 minutes, it is separated by filtration mother liquor, is washed.Nickeliferous boehmite is made in 90 DEG C of dry 3h, 120 DEG C of dry 2h.
(2) nickeliferous carrier
The nickeliferous boehmite for weighing preparation, with nitric acid, phosphoric acid, citric acid, sesbania powder and water mixer kneader at plastic Then body, extruded moulding obtain nickeliferous precursor carrier in 120 DEG C of dry 4h, 600 DEG C of roasting 4h.Prepare lithium carbonate and citric acid Aqueous solution is impregnated into nickeliferous precursor carrier using equi-volume impregnating, is contained in 120 DEG C of dry 4h, 990 DEG C of roasting 4h The carrier of nickel and lithium.
(3) catalyst
Nickel nitrate, basic copper carbonate are dissolved in ammonium hydroxide and water, maceration extract is made, (2) are impregnated into using equi-volume impregnating On the 50g carrier of middle preparation, 120 DEG C of drying, 380 DEG C of roasting 4h obtain catalyst C7.
Comparative example 3
This comparative example prepares nickeliferous carrier according to the method that embodiment in CN1123392C describes, and specific step is as follows:
It weighs 200g aluminum hydroxide solid elastomer powder and 7.5g sesbania powder after mixing, then weighs 35g carbon black and 16g alkali formula carbon After mixing, tetrabutylammonium hydroxide (the wherein C previously measured with graduated cylinder is wherein being added in sour nickel16H37The content of NO is about 10w%) 68ml is stirred with glass bar, comes into full contact with tetrabutylammonium hydroxide solution with mixture, will after placing 30 minutes It is added in the aluminum hydroxide solid elastomer powder for being mixed with sesbania powder, mixes again;
By the mixed solution of acetic acid and citric acid, deionized water, it is added to and is mixed with basic nickel carbonate, carbon black and sesbania powder In aluminum hydroxide solid elastomer powder, after kneading is at uniform paste plastic, cloverleaf pattern item is extruded on banded extruder, at 120 DEG C It after 4 hours dry, is roasted 4 hours at 920 DEG C, alumina carrier containing Ni is made.
Maceration extract is made in nickel nitrate, copper nitrate, lithium carbonate co-dissolve in water, the 100g for being impregnated into above-mentioned preparation contains On nickel carrier, 120 DEG C of drying, 420 DEG C of roasting 4h obtain catalyst D4.
Embodiment 8
(1) nickeliferous boehmite
It is 50g Al by 4L concentration2O3The sodium aluminate solution of/L is placed in belt stirrer and tank bottom can be passed through the stainless of gas In steel container, it is passed through the mixed gas of carbon dioxide and air, carbon dioxide in gas mixture concentration is 70v%, flow 3Nm3/ h.35 DEG C of reaction temperature, reaction end pH value 10, stopping is passed through carbon dioxide.Under blowing air stirring condition, 1L concentration, which is added, is The nickel nitrate solution of 5g NiO/L is stablized after twenty minutes, is 9.5 by the way that ammonium hydroxide is added dropwise to adjust plasm PH value, after reaction always Change 40 minutes, be separated by filtration mother liquor, washs.In 120 DEG C of dry 4h, nickeliferous boehmite is made.
(2) nickeliferous carrier
The nickeliferous boehmite for weighing preparation is squeezed with nitric acid, citric acid, sesbania powder and water mixer kneader at plastic Item molding, then obtains nickeliferous carrier in 120 DEG C of dry 4h, 1050 DEG C of roasting 4h.
(3) catalyst
By nickel nitrate, copper nitrate is soluble in water that maceration extract is made, and is impregnated into using equi-volume impregnating and to be prepared in (2) On 50g carrier, 120 DEG C of drying, 400 DEG C of roasting 4h obtain catalyst C8.
Embodiment 9
(1) nickeliferous boehmite
It is 50g Al by 4L concentration2O3The nickel nitrate solution that the aluminum nitrate solution and 1L concentration of/L is 8gNiO/L is uniformly mixed It is packed into the container of high level, the ammonia spirit that compound concentration is 8wt% is packed into the container of high level, and wriggling is connected under two containers Pump carries out belt stirrer of the flow control inflow equipped with 5L bottom water and tank bottom can be passed through in the rustless steel container of gas, reaction temperature 50 DEG C, it is 7.5 that control flow, which adjusts reacting system PH value, after reaction, ammonium hydroxide is added and adjusts plasm PH value 8.5, aging 60 Minute, it is separated by filtration mother liquor, is washed.Nickeliferous boehmite is made in 90 DEG C of dry 3h, 120 DEG C of dry 2h.
(2) nickeliferous carrier
The nickeliferous boehmite for weighing preparation, with lanthanum nitrate, nitric acid, citric acid, sesbania powder and water mixer kneader at can Plastomer, extruded moulding, then in 120 DEG C of dry 4h.350 DEG C of roasting 4h, obtain the precursor carrier containing lanthanum and nickel.Prepare magnesium nitrate Aqueous solution is impregnated on nickeliferous carrier using equi-volume impregnating, in 120 DEG C of dry 4h, 850 DEG C of roasting 4h, is obtained containing lanthanum, magnesium With the carrier of nickel.
(3) catalyst
By nickel nitrate, copper nitrate is soluble in water that maceration extract is made, and is impregnated into using equi-volume impregnating and to be prepared in (2) On 50g carrier, 120 DEG C of drying, 380 DEG C of roasting 4h obtain catalyst C9.
Comparative example 4
(1) boehmite
Preparation 4L concentration is 50g Al2O3The aluminum nitrate solution and concentration of/L is that the ammonia spirit of 8wt% is respectively charged into a high position In the container at place, peristaltic pump progress belt stirrer of the flow control inflow equipped with 3L bottom water is connected under two containers and tank bottom can be passed through gas In the rustless steel container of body, 45 DEG C of reaction temperature, it is 8.0 that control flow, which adjusts reacting system PH value, after reaction, ammonia is added Water adjusts plasm PH value 8.5, aging 30 minutes, is separated by filtration mother liquor, washs.In 120 DEG C of dry 6h, boehmite is obtained.
(2) carrier
The boehmite for weighing preparation, with lanthanum nitrate, nitric acid, citric acid, sesbania powder and water mixer kneader at plastic, Extruded moulding, then in 120 DEG C of dry 4h.Obtain the precursor carrier containing lanthanum.Magnesium nitrate aqueous solution is prepared, using incipient impregnation Method is impregnated on nickeliferous carrier, obtains the carrier containing lanthanum and magnesium in 120 DEG C of dry 4h, 880 DEG C of roasting 4h.
(3) catalyst
Nickel nitrate is dissolved in the water, maceration extract is made, is impregnated on 100g carrier, 120 DEG C of drying, 450 DEG C of roasting 4h, Obtain catalyst D3.
1 embodiment catalyst of table and comparative example catalyst physical property and composition
Evaluating catalyst:
Use drippolene for raw material, feedstock property is shown in Table 2, evaluates C1~C9 and D1~D4 catalyst.Respectively 300h is evaluated, every 12h sampling analysis bromine valency and diene, average data see the table below 3.
Evaluating catalyst is carried out on 100ml adiabatic reactor hydrogenation reaction device, and catalyst is first at 380~450 DEG C It is restored 10 hours under hydrogen, then cools to 50 DEG C, be passivated the laggard raw material of 5h with the hexamethylene of the 1000ppm containing dimethyl disulfide Oil.Evaluate process conditions:Reaction pressure:2.8MPa, inlet temperature:55 DEG C, fresh feed oil air speed:3.0h-1, hydrogen and oil volume Than:200: 1 (volume ratio is in terms of green oils).
2 hydrogenating materials oil nature of table
3 evaluating catalyst average data of table
As can be seen from the above Examples and Comparative Examples, hydrogen is added to urge using the nickel-copper system of the nickeliferous aluminium oxide preparation of the present invention Agent, under identical evaluation process conditions, the diene of hydrogenated products, bromine valency are relatively low, this has been absolutely proved in embodiment The catalyst of preparation Hydrogenation with higher.
Certainly, the present invention can also have other various embodiments, without deviating from the spirit and substance of the present invention, ripe Various corresponding changes and modifications, but these corresponding changes and modifications can be made according to the present invention by knowing those skilled in the art It all should belong to the protection scope of the claims in the present invention.

Claims (16)

1. a kind of nickel-copper series hydrocatalyst, active component nickel and copper are contained in catalyst, using nickeliferous aluminium oxide as carrier, It is characterized in that:By catalyst weight for 100wt% in terms of, contain 10~20wt% of nickel oxide, preferably 14.5~18.5wt%, oxygen Change 0.01~5wt% of copper, preferably 0.05~3wt%, cerium oxide and/or lanthana 0~5wt%, preferably 0.2~ 1.8wt%, alkali metal and/or alkaline earth oxide 0~6wt%, preferably 0.5~3wt%;Specific surface area of catalyst 50~ 180m2/ g, hole hold 0.30~0.60cm3/ g, 0.5~1.1g/cm of heap density3;The presoma of alumina carrier containing Ni is nickeliferous quasi- Boehmite has acid-base neutralization and plastic process in the preparation process of the nickeliferous boehmite;It is impregnated containing active component solution Nickel-copper series hydrocatalyst is made through drying, roasting in alumina carrier containing Ni.
2. nickel-copper series hydrocatalyst according to claim 1, it is characterised in that:The specific surface of nickeliferous boehmite 300~420m of product20.7~1.2cm of/g, Kong Rongwei3/ g, aperture are 5~10nm;It is with nickeliferous boehmite total weight 100wt% meter, nickel content are 0.1~10wt%, preferably 0.5~5wt%.
3. nickel-copper series hydrocatalyst according to claim 1, it is characterised in that:With alumina carrier containing Ni total weight For 100% meter, the nickel content of alumina carrier containing Ni is 0.1~10wt%, preferably 0.5~5wt%, specific surface area 25~ 250m20.15~0.85cm of/g, Kong Rongwei3/ g, aperture are 8~40nm.
4. nickel-copper series hydrocatalyst according to claim 1, it is characterised in that:Alumina carrier containing Ni is by nickeliferous quasi- Boehmite is obtained through molding, roasting, contains δ-Al2O3、δ-NiAl26O40And NiAl2O4Crystal form, and 0.45 in XRD spectra≤ B1/B2≤0.85, B1 refer to that the integrated intensity at the peak that 2 θ are 34.2~39.8 ° in XRD spectra, B2 refer to that 2 θ are in XRD spectra The integrated intensity at 43.3~48.5 ° of peak.
5. nickel-copper series hydrocatalyst according to claim 1, it is characterised in that:δ-Al in alumina carrier containing Ni2O3、 δ-NiAl26O40And NiAl2O4Account for 30~100wt% of alumina carrier containing Ni total weight.
6. nickel-copper series hydrocatalyst according to claim 1, it is characterised in that:Also contain in alumina carrier containing Ni θ-Al2O3、α-Al2O3And/or γ-Al2O3;Best α-Al2O3Content is lower than 30wt%.
7. nickel-copper series hydrocatalyst according to claim 4, it is characterised in that:Alumina carrier containing Ni roasting condition For:800~1200 DEG C of 4~10h of roasting, preferably 850~1100 DEG C of maturing temperature.
8. a kind of preparation method of nickel-copper series hydrocatalyst described in claim 1, it is characterised in that:With nickeliferous and copper Solution impregnates alumina carrier containing Ni by one or more steps, obtains catalyst by drying, roasting;Alumina carrier containing Ni by Nickeliferous boehmite is obtained through molding, roasting;Wherein nickeliferous boehmite is obtained by following methods, and detailed process includes Following steps:
(1) it neutralizes in kettle and bottom water is added, bottom water is deionized water, is heated to 50~90 DEG C;
(2) acid aluminum saline solution, acid nickel salt aqueous solution are prepared respectively, by acid aluminium salt aqueous solution and acid nickel salt aqueous solution It is uniformly mixed, obtains the acidic aqueous solution of aluminium containing salt and nickel salt, adjusting its solution temperature is 50~90 DEG C, wherein acidic aluminum salt water Solution concentration is preferably 10~80gAl2O3/ L, acid nickel salt aqueous solution concentration is preferably 3~50gNiO/L;
(3) alkali metal aluminate solution is prepared, alkali metal aluminate solution concentration is preferably 50~300gAl2O3/L;
(4) step is added in the acidic aqueous solution that step (2) obtains and the alkali metal aluminate solution cocurrent that step (3) obtains (1) in the neutralization kettle in, constant ventilation stirring, until plastic;
(5) 50~90 DEG C of gelling temperature of rate-determining steps (4), plastic pH value 7~10;
(6) it after cemented into bundles, through aging, is filtered, washed, dries nickeliferous boehmite is made.
9. the preparation method of nickel-copper series hydrocatalyst according to claim 8, it is characterised in that:In in step (1) Air is passed through with the bottom of kettle.
10. the preparation method of nickel-copper series hydrocatalyst according to claim 8, it is characterised in that:It is adjusted in step (2) The temperature for saving the acidic aqueous solution is 50~70 DEG C.
11. the preparation method of nickel-copper series hydrocatalyst according to claim 8, it is characterised in that:In step (5), at 50~70 DEG C of glue temperature;Plastic pH value 7.5~9.5.
12. the preparation method of nickel-copper series hydrocatalyst according to claim 8, it is characterised in that:Alkali in step (3) The pH value of metal aluminate solution is 9~14, preferable ph 12~14.
13. the preparation method of nickel-copper series hydrocatalyst according to claim 8, it is characterised in that:Acid aluminium salt is water-soluble Liquid is the mixed solution of one or more of aluminium chloride, aluminum sulfate and aluminum nitrate, preferably sulfuric acid aluminum solutions;Acid nickel salt is water-soluble Liquid is the mixed solution of one or more of nickel chloride, nickel sulfate, nickelous bromide and nickel nitrate, preferably nickel nitrate solution;Alkali gold Belong to aluminate solution and refers to sodium metaaluminate or potassium metaaluminate solution.
14. the preparation method of nickel-copper series hydrocatalyst according to claim 8, it is characterised in that:In step (2), acid Property aluminium salt and acid nickel salt aqueous solution mixing, obtain the acidic aqueous solution of aluminium containing salt and nickel salt, pH value is 2~5, preferable ph 2 ~4.
15. the preparation method of nickel-copper series hydrocatalyst according to claim 8, it is characterised in that:In step (6), always Changing temperature is 50~80 DEG C, and ageing time is 10~60min.
16. the preparation method of nickel-copper series hydrocatalyst according to claim 8, it is characterised in that:With nickeliferous and copper Solution impregnates alumina carrier containing Ni by one or more steps, by drying, roasts obtained catalyst;Its roasting condition is:300 3~8h is roasted at~500 DEG C.
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