CN105964288A - Method for preparing mesoporous carbon nitride loaded nano nickel phosphide - Google Patents

Method for preparing mesoporous carbon nitride loaded nano nickel phosphide Download PDF

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Publication number
CN105964288A
CN105964288A CN201610406785.1A CN201610406785A CN105964288A CN 105964288 A CN105964288 A CN 105964288A CN 201610406785 A CN201610406785 A CN 201610406785A CN 105964288 A CN105964288 A CN 105964288A
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nickel
phosphide
nickel phosphide
carbonitride
mesoporous carbonitride
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CN105964288B (en
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刘平
陈炎亮
李永昕
薛冰
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Changzhou University
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Changzhou University
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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
    • B01J27/24Nitrogen compounds
    • 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
    • B01J35/60Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/61Surface area
    • B01J35/615100-500 m2/g

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The invention relates to a method for preparing mesoporous carbon nitride loaded nano nickel phosphide. According to the method, graphite-like mesoporous carbon nitride high in specific surface area serves as a carrier, and loaded nickel phosphide is prepared through a low-temperature normal-pressure solvothermal method, wherein the specific surface area is 435 m<2>/g; a special N-rich body structure of carbon nitride is used for complexing and dispersing nickel ions, and accordingly high-dispersity nano nickel phosphide is prepared. The carbon nitride loaded nano nickel phosphide is used for catalytic nitrobenzene hydrogenation, and catalytic activity and stability are high. The nano nickel phosphide is mild in preparation conditions, simple in process, low in cost and capable of easily achieving industrial production.

Description

A kind of preparation method of mesoporous carbonitride load nano nickel phosphide
Technical field
The present invention relates to new transition metal catalysts and preparing technical field thereof, particularly to a kind of support type The preparation method of nano nickel phosphide hydrogenation catalyst.
Background technology
Transition metal phosphide is that a big class is entered the compound that metal lattice is formed, this kind of chemical combination by phosphorus atoms Thing Heat stability is good, hardness are big, antioxidation and corrosion resistance strong, and show the highest Adsorption Density.Research finds, transition metal phosphide has the hydroprocessing activity of excellence, and hydrogen-consuming volume is few, necessarily Alternative precious metals pt in degree, arouses great concern in new catalytic material field.At present In the transition metal phosphide studied, nickel phosphide shows more superior hydrogenation activity, is expected to become new Generation oil refining hydrotreating catalyst.
Many scholars start to be devoted to the research of transition metal phosphide, find that the size of its particle diameter directly restricts The height of catalysis activity, the phosphide of high dispersive is the active center of reaction.And traditional temperature programmed reduction Method is easily reunited due to temperature required higher (600-800 DEG C), the phosphide particle of preparation, its specific surface area Typically smaller than 10m2/g.Although and solvent-thermal method mild condition conventional recently, prepared phosphide particle is relatively Little, have bigger specific surface area.But, solvent-thermal method is usually static treatment in crystallizing kettle, instead A large amount of gas can be produced during Ying kettle is damaged.It addition, people also attempt being come by variety carrier Dispersion phosphide, such as SiO2, molecular sieve, high surface area carbon etc..But due to phosphide and carrier function power relatively Weak make dispersion effect not ideal enough.Therefore, it is necessary to find more cheap, easy method and suitably Carrier prepares high dispersive, high activity phosphide catalyst.
Summary of the invention
The technical problem to be solved in the present invention is complicated, harsh for current transition metal phosphide preparation condition, Cost is high, and particle agglomeration is serious, the problems such as support dispersion effect is not ideal enough, it is provided that a kind of synthetic method letter List, mild condition, with low cost and can the support type nickel phosphide nanoparticle hydrogenation catalyst of high degree of dispersion Method.
The technical solution adopted for the present invention to solve the technical problems is:
The present invention selects the mesoporous carbonitride of class graphite mould of high-ratio surface to be carrier, by low-temperature atmosphere-pressure solvent thermal Method prepares loaded nano nickel phosphide, and the specific surface area of described mesoporous carbonitride is 435m2/g.Specifically according to Following steps are carried out:
(1) weigh a certain amount of nickel source and mesoporous carbonitride joins in solvent, wherein nickel and the matter of carbonitride Amount ratio is 1:20-1:6, is sufficiently stirred for;It is subsequently adding a certain amount of sodium dihydric hypophosphite, wherein the rubbing of phosphorus and nickel That ratio is 2:1-5:1, stirs;
(2) by said mixture reflow treatment 5h in 150-200 DEG C of oil bath, naturally cool to after room temperature from The heart separates, wash, be vacuum dried and i.e. obtain described catalyst.
As limitation of the invention, nickel source of the present invention is Nickel dichloride., nickel acetate or nickel sulfate;Described Solvent be ethylene glycol, propylene glycol or glycerol.
In the present invention, use low-temperature atmosphere-pressure solvent structure nano nickel phosphide, on the one hand avoid traditional Higher temperature needed for temperature programmed reduction method and the rigors to heating schedule;On the other hand normal pressure Method can be avoided producing a large amount of gas in enclosed system and reaction vessel is caused damage.
The present invention selects the mesoporous carbonitride of class graphite mould of high-ratio surface to be carrier, utilizes in carbonitride main unit Abundant N lone pair electrons, make presoma Ni element be dispersed in the " empty of 3 three s-triazine compositions by coordinate bond Chamber " in, thus prepare the nickel phosphide of high degree of dispersion.
This synthetic method is simple to operate, mild condition and with low cost, it is easy to industrialized production.
Catalyst of the present invention shows good catalysis activity with multiple in the hydrogenation reaction of Nitrobenzol The property used.
Detailed description of the invention
In conjunction with following example, the present invention is further illustrated below, however, it should be noted that these are real Execute example only to illustrate and be used, and be not necessarily to be construed as the restriction that the present invention implements.
Embodiment 1
Weigh 0.2377g Nickel dichloride hexahydrate and the mesoporous carbonitride of 0.3522g join in 40ml ethylene glycol, It is sufficiently stirred for 1h, is subsequently adding 0.2640g sodium dihydric hypophosphite and continues to stir 0.5h;By mixture at 170 DEG C Reflow treatment 5h in oil bath, centrifugation after naturally cooling to room temperature, sample deionized water fully wash, 60 DEG C of vacuum drying, obtain described catalyst A.
Embodiment 2
Weigh 0.2377g Nickel dichloride hexahydrate and the mesoporous carbonitride of 0.7044g join in 40ml ethylene glycol, It is sufficiently stirred for 1h, is subsequently adding 0.2640g sodium dihydric hypophosphite and continues to stir 0.5h;By mixture at 170 DEG C Reflow treatment 5h in oil bath, centrifugation after naturally cooling to room temperature, sample deionized water fully wash, 60 DEG C of vacuum drying, obtain described catalyst B.
Embodiment 3
Weigh 0.2377g Nickel dichloride hexahydrate and the mesoporous carbonitride of 1.174g joins in 40ml ethylene glycol, fill Divide stirring 1h, be subsequently adding 0.176g sodium dihydric hypophosphite and continue to stir 0.5h;By mixture at 170 DEG C Reflow treatment 5h in oil bath, centrifugation after naturally cooling to room temperature, sample deionized water fully wash, 60 DEG C of vacuum drying, obtain described catalyst C.
Embodiment 4
Weigh 0.2377g Nickel dichloride hexahydrate and the mesoporous carbonitride of 0.7044g join in 40ml propylene glycol, It is sufficiently stirred for 1h, is subsequently adding 0.264g sodium dihydric hypophosphite and continues to stir 0.5h;By mixture at 170 DEG C Reflow treatment 5h in oil bath, centrifugation after naturally cooling to room temperature, sample deionized water fully wash, 60 DEG C of vacuum drying, obtain described catalyst D.
Embodiment 5
Weigh 0.2377g Nickel dichloride hexahydrate and the mesoporous carbonitride of 0.7044g joins in 40ml glycerol, fill Divide stirring 1h, be subsequently adding 0.264g sodium dihydric hypophosphite and continue to stir 0.5h;By mixture at 170 DEG C Reflow treatment 5h in oil bath, centrifugation after naturally cooling to room temperature, sample deionized water fully wash, 60 DEG C of vacuum drying, obtain described catalyst E.
Embodiment 6
Weigh 0.2377g Nickel dichloride hexahydrate and the mesoporous carbonitride of 0.7044g join in 40ml ethylene glycol, It is sufficiently stirred for 1h, is subsequently adding 0.44g sodium dihydric hypophosphite and continues to stir 0.5h;By mixture at 200 DEG C Reflow treatment 5h in oil bath, centrifugation after naturally cooling to room temperature, sample deionized water fully wash, 60 DEG C of vacuum drying, obtain described catalyst F.
Embodiment 7
Weigh 0.2377g Nickel dichloride hexahydrate and the mesoporous carbonitride of 0.7044g join in 40ml ethylene glycol, It is sufficiently stirred for 1h, is subsequently adding 0.264g sodium dihydric hypophosphite and continues to stir 0.5h;By mixture at 150 DEG C Reflow treatment 5h in oil bath, centrifugation after naturally cooling to room temperature, sample deionized water fully wash, 60 DEG C of vacuum drying, obtain described catalyst G.
Embodiment 8
Weigh 0.1768g nickel acetate and the mesoporous carbonitride of 0.7044g joins in 40ml ethylene glycol, fully stir Mix 1h, be subsequently adding 0.264g sodium dihydric hypophosphite and continue to stir 0.5h;By mixture 170 DEG C of oil baths Middle reflow treatment 5h, centrifugation after naturally cooling to room temperature, sample deionized water fully wash, 60 DEG C Vacuum drying, obtains described catalyst H.
Embodiment 9
Weigh 0.2628g nickel sulfate and the mesoporous carbonitride of 0.7044g joins in 40ml ethylene glycol, fully stir Mix 1h, be subsequently adding 0.264g sodium dihydric hypophosphite and continue to stir 0.5h;By mixture 170 DEG C of oil baths Middle reflow treatment 5h, centrifugation after naturally cooling to room temperature, sample deionized water fully wash, 60 DEG C Vacuum drying, obtains described catalyst I.
During catalyst in above-described embodiment is applied to hydrogenation of chloronitrobenzene, reaction condition is as follows:
Solvent: ethanol;Catalyst: 10mg;Nitrobenzol: 0.5mL;Hydrogen Vapor Pressure: 1.0MPa;Instead Answer temperature: 100 DEG C;Response time: 1h, its catalytic performance is as shown in table 1:
The catalytic performance of table 1 catalyst
Catalyst Nitrobenzene conversion rate (%) Aniline selectivity (%)
A 92.3 99.7
B 98.7 100
C 90.1 99.7
D 93.6 99.8
E 86.5 98.9
F 85.1 98.6
G 92.6 99.8
H 98.5 100
I 95.9 100
As it can be seen from table 1 catalyst of the present invention to be used for the hydrogenation of Nitrobenzol, at 100 DEG C, Reacting 1h under 1.0MPa hydrogen pressure, Nitrobenzol maximum conversion is up to 98.7%, and aniline selectivity is up to 100%.
The catalyst B obtaining above-described embodiment 2 carries out multiplexing performance investigation, and this catalyst is centrifugal to be reclaimed also With three dried multiplexings of washing with alcohol, performance is as shown in table 2:
The multiplexing performance of table 2 catalyst B
Multiplexing number Nitrobenzene conversion rate (%) Aniline selectivity (%)
1 98.7 100
2 98.2 100
3 98.3 100
4 98.0 100
5 98.2 100
6 97.9 100
Table 2 shows that catalyst is active almost without decline after using 6 times, and multiplexing performance is good.
With the above-mentioned desirable embodiment according to the present invention for enlightenment, by above-mentioned description, related work Personnel can carry out various change and amendment completely in the range of without departing from this invention technological thought. The content that the technical scope of this invention is not limited in description, it is necessary to according to right Determine its technical scope.

Claims (4)

1. the preparation method of a mesoporous carbonitride load nano nickel phosphide, it is characterised in that select high-ratio surface The mesoporous carbonitride of long-pending rich N agent structure is carrier, prepares loaded nano by low-temperature atmosphere-pressure solvent-thermal method Nickel phosphide, the specific surface area of described mesoporous carbonitride is 435m2/g。
The preparation method of a kind of mesoporous carbonitride the most according to claim 1 load nano nickel phosphide, its It is characterised by that the method is carried out as steps described below:
(1) weigh a certain amount of nickel source and mesoporous carbonitride joins in solvent, wherein nickel and the matter of carbonitride Amount ratio is 1:20-1:6, is sufficiently stirred for;It is subsequently adding a certain amount of sodium dihydric hypophosphite, wherein the rubbing of phosphorus and nickel That ratio is 2:1-5:1, stirs;
(2) by said mixture reflow treatment 5h in 150-200 DEG C of oil bath, naturally cool to after room temperature from The heart separates, wash, be vacuum dried and i.e. obtain described catalyst.
The preparation method of a kind of mesoporous carbonitride the most according to claim 2 load nano nickel phosphide, its It is characterised by that the nickel source described in step (1) is Nickel dichloride., nickel acetate or nickel sulfate.
The preparation method of a kind of mesoporous carbonitride the most according to claim 2 load nano nickel phosphide, its It is characterised by that the solvent described in step (1) is ethylene glycol, propylene glycol or glycerol.
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107312199A (en) * 2017-06-09 2017-11-03 福州大学 A kind of hypo-aluminum orthophosphate Hybrid fire retardant and preparation method thereof
CN107694584A (en) * 2017-10-15 2018-02-16 华东师范大学 A kind of self-supporting catalyst of phosphatizing nickel and its preparation method and application
CN109107597A (en) * 2018-08-31 2019-01-01 华南农业大学 A kind of transition metal phosphide/g-C3N4Composite material and preparation method and application
CN109160500A (en) * 2018-09-28 2019-01-08 常州大学 A method of control synthesis different phase nano nickel phosphide
CN110813352A (en) * 2019-10-31 2020-02-21 润泰化学(泰兴)有限公司 Ni2Preparation method of P/NC catalyst, Ni2P/NC catalyst and application thereof
CN112090434A (en) * 2020-09-16 2020-12-18 常州大学 Preparation method of supported nickel phosphide for catalyzing selective hydrogenation of furfural to prepare furfuryl alcohol
CN112201782A (en) * 2020-10-16 2021-01-08 西南大学 Nickel phosphide/carbon/nickel phosphide composite material and preparation method and application thereof
CN112588310A (en) * 2020-12-02 2021-04-02 江苏大学 Preparation method of visible light response nickel-phosphorized carbon nitride photocatalyst
CN113078329A (en) * 2021-03-25 2021-07-06 华中科技大学 Ni with hollow yolk-eggshell structure2Preparation method and application of P/C nano composite material
CN114768855A (en) * 2022-05-10 2022-07-22 安徽工业技术创新研究院 Heterojunction composite photocatalyst with atomic-level channel, preparation method and application
CN115475648A (en) * 2022-10-09 2022-12-16 陕西师范大学 Internal and external surface simultaneously loaded with Ni 2 Preparation method of mesoporous P-doped carbon nitride hollow sphere catalyst of P
WO2024036756A1 (en) * 2022-08-19 2024-02-22 台州学院 Multifunctional phosphorus and nickel doped graphite-like carbon nitride nanosheet, preparation method therefor, and abs material

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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107312199B (en) * 2017-06-09 2018-09-18 福州大学 A kind of hypo-aluminum orthophosphate Hybrid fire retardant and preparation method thereof
CN107312199A (en) * 2017-06-09 2017-11-03 福州大学 A kind of hypo-aluminum orthophosphate Hybrid fire retardant and preparation method thereof
CN107694584A (en) * 2017-10-15 2018-02-16 华东师范大学 A kind of self-supporting catalyst of phosphatizing nickel and its preparation method and application
CN107694584B (en) * 2017-10-15 2021-06-22 华东师范大学 Self-supporting nickel phosphide catalyst and preparation method and application thereof
CN109107597A (en) * 2018-08-31 2019-01-01 华南农业大学 A kind of transition metal phosphide/g-C3N4Composite material and preparation method and application
CN109160500A (en) * 2018-09-28 2019-01-08 常州大学 A method of control synthesis different phase nano nickel phosphide
CN110813352A (en) * 2019-10-31 2020-02-21 润泰化学(泰兴)有限公司 Ni2Preparation method of P/NC catalyst, Ni2P/NC catalyst and application thereof
CN110813352B (en) * 2019-10-31 2022-05-03 润泰化学(泰兴)有限公司 Ni2Preparation method of P/NC catalyst, Ni2P/NC catalyst and application thereof
CN112090434A (en) * 2020-09-16 2020-12-18 常州大学 Preparation method of supported nickel phosphide for catalyzing selective hydrogenation of furfural to prepare furfuryl alcohol
CN112090434B (en) * 2020-09-16 2023-05-23 常州大学 Preparation method of supported nickel phosphide for preparing furfuryl alcohol by catalyzing selective hydrogenation of furfural
CN112201782B (en) * 2020-10-16 2022-09-30 西南大学 Nickel phosphide/carbon/nickel phosphide composite material and preparation method and application thereof
CN112201782A (en) * 2020-10-16 2021-01-08 西南大学 Nickel phosphide/carbon/nickel phosphide composite material and preparation method and application thereof
CN112588310A (en) * 2020-12-02 2021-04-02 江苏大学 Preparation method of visible light response nickel-phosphorized carbon nitride photocatalyst
CN113078329A (en) * 2021-03-25 2021-07-06 华中科技大学 Ni with hollow yolk-eggshell structure2Preparation method and application of P/C nano composite material
CN114768855A (en) * 2022-05-10 2022-07-22 安徽工业技术创新研究院 Heterojunction composite photocatalyst with atomic-level channel, preparation method and application
CN114768855B (en) * 2022-05-10 2023-11-24 安徽工业技术创新研究院 Heterojunction composite photocatalyst with atomic-scale channel and preparation method and application thereof
WO2024036756A1 (en) * 2022-08-19 2024-02-22 台州学院 Multifunctional phosphorus and nickel doped graphite-like carbon nitride nanosheet, preparation method therefor, and abs material
CN115475648A (en) * 2022-10-09 2022-12-16 陕西师范大学 Internal and external surface simultaneously loaded with Ni 2 Preparation method of mesoporous P-doped carbon nitride hollow sphere catalyst of P

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